Bar chart parameters for LookML dashboards

This page demonstrates how to add and customize a LookML dashboard element of type: looker_bar with LookML dashboard parameters in a dashboard.lkml file.

For information about building a bar chart through the Looker UI, see the Bar chart options documentation page.

Example usage

## BASIC PARAMETERS
name: element_name
title: 'Element Title'
type: looker_bar
height: N
width: N
top: N
left: N
row: N
col: N
refresh: N (seconds | minutes | hours | days)
note:
  text: 'note text'
  state: collapsed | expanded
  display: above | below | hover

## QUERY PARAMETERS
model: model_name
explore: explore_name
dimensions: [view_name.field_name, view_name.field_name, …]
measures: [view_name.field_name, view_name.field_name, …]
sorts: [view_name.field_name asc | desc, view_name.field_name, …]
pivots: [view_name.field_name, view_name.field_name, …]
limit: N
column_limit: N
filters:
  view_name.field_name: 'Looker filter expression' | 'filter value'
listen:
  dashboard_filter_name: dimension_or_measure_name
query_timezone: 'specific timezone' | user_timezone
merged_queries:
- 'primary query definition'
- 'next source query definition'
  join_fields:
  - field_name: view_name.field_name
    source_field_name: view_name.field_name

## PLOT PARAMETERS
stacking: normal | percent | ''
ordering: none | asc | desc
column_spacing_ratio: number between 0 and 1
column_group_spacing_ratio: number between 0 and 1
hide_legend: true | false
legend_position: center | left | right
hidden_fields: [view_name.field_name, view_name.field_name, …]
limit_displayed_rows: true | false
limit_displayed_rows_values:
  show_hide: show | hide
  first_last: first | last
  num_rows: 'N'

## SERIES PARAMETERS
colors: [css_color, css_color, …]
series_colors:
  series_name: css_color
  # Possibly more series color assignments

series_labels:
  'Series Name': desired series label
  # Possibly more series label assignments
series_types:
   series_name: column | line | area | scatter
   # Possibly more series visualization assignments
show_view_names: true | false

## VALUE PARAMETERS
show_value_labels: true | false
show_null_labels: true | false
label_color: [css_color, css_color, …]
font_size: Npx
label_rotation: N
label_value_format: 'value formatting string'
show_totals_labels: true | false
hidden_series: [series_name, series_name, …]
show_silhouette: true | false
totals_color: css_color

## X-AXIS PARAMETERS
x_axis_scale: auto | ordinal | time
x_axis_reversed: true | false
show_x_axis_label: true | false
x_axis_label: desired x-axis label
show_x_axis_ticks: true | false
x_axis_gridlines: true | false
x_axis_label_rotation: N
x_axis_datetime_label: 'time formatting string'
x_axis_zoom: true | false

## Y-AXIS PARAMETERS
y_axis_gridlines: true | false
y_axis_reversed: true | false
reference_lines:
  # reference line options
y_axis_zoom: true | false

Parameter definitions

Parameter Name	Description
Basic Parameters
name (for elements)	Creates an element
title (for elements)	Changes the way an element name appears to users
type (for elements)	Determines the type of visualization to be used in the element
height (for elements)	Defines the height of an element in units of tile_size for layout: tile and layout: static dashboards
width (for elements)	Defines the width of an element in units of tile_size for layout: tile and layout: static dashboards
top	Defines the top-to-bottom position of an element in units of tile_size for layout: static dashboards
left	Defines the left-to-right position of an element in units of tile_size for layout: static dashboards
row	Defines the top-to-bottom position of an element in units of rows for layout: newspaper dashboards
col	Defines the left-to-right position of an element in units of columns for layout: newspaper dashboards
refresh (for elements)	Sets the interval at which the element will automatically refresh
note	Starts a section of LookML to define a note for an element. This parameter has subparameters text, state, and display.
Query Parameters
model	Defines the model to be used for the element's query
explore (for elements)	Defines the Explore to be used for the element's query
dimensions	Defines the dimensions to be used for the element's query
measures	Defines the measures to be used for the element's query
sorts	Defines the sorts to be used for the element's query
pivots	Defines the dimensions that should be pivoted to be used for the element's query
limit	Defines the row limit to be used for the element's query
filters (for elements)	Defines the filters that cannot be changed for the element's query
listen	Defines the filters that can be changed for the element's query, if filters (for dashboard) have been created
query_timezone	Defines the time zone that should be used when the query is run
merged_queries	Defines a merged results query
Plot Parameters
stacking	Stacks series on top of each other to create a stacked chart
ordering	Sets the order of series values in a stacked or stacked percentage chart
column_spacing_ratio	Sets the spacing between columns within a group
column_group_spacing_ratio	Sets the spacing between column groups to a value between 0 and 1
hide_legend	Hides the chart legend
legend_position	Specifies whether legend appears to the left, center, or right of the chart
hidden_fields	Specifies any fields to use in the query but hide in the chart
limit_displayed_rows	Shows or hides rows in a visualization based on their position in the results
limit_displayed_rows_values	Specifies which rows to show or hide in a visualization. This parameter has the subparameters show_hide, first_last, and num_rows.
Series Parameters
colors	Sets the colors of chart series based on the order in which the series appear
series_colors	Sets the colors of chart series based on the name of the series
series_labels	Changes the way a series name appears to users
series_types	Mixes visualization types by defining the type for each series
show_view_names	Hides view names from chart labels
Value Parameters
show_value_labels	Shows labels next to data points
show_null_labels	Determines if null labels should be shown on a chart when labels are shown
label_color	Specifies a comma-separated list of color values
font_size	Sets the font size of value labels
label_rotation	With stacking set to the default (''), sets the rotation of value labels to a value between -360 and 360
label_value_format	Specifies Excel-style formatting for value labels
show_totals_labels	With stacking set to normal, specifies whether totals are displayed for each stacked group of data points on a chart
hidden_series	Shows a lightly shaded representation of a disabled chart series when the element loads
show_silhouette	With stacking set to normal, displays a lightly shaded representation of a disabled series
totals_color	With stacking set to normal, specifies the color of totals labels
X-Axis Parameters
x_axis_scale	Specifies how the x-axis scale is calculated
x_axis_reversed	Specifies the direction of the x-axis
show_x_axis_label	Hides the x-axis label
x_axis_label	Defines a custom x-axis label
show_x_axis_ticks	Shows ticks on the x-axis
x_axis_gridlines	Extends grid lines from the x-axis
x_axis_label_rotation	Rotates x-axis labels a number of degrees
x_axis_datetime_label	Specifies a format string for the x-axis labels, if they are dates
x_axis_zoom	Specifies whether to allow zooming along the x-axis
Y-Axis Parameters
y_axis_gridlines	Extends gridlines from the y-axis
y_axis_reversed	Sets the direction of the x-axis
reference_lines	Add reference lines to a chart
y_axis_zoom	Specifies whether to allow zooming along the y-axis. Disabled if x_axis_zoom: false.

Basic parameters

When defining a LookML dashboard element, you must specify values for at least the name and type basic parameters. Other basic parameters like title, height, and width affect the appearance and position of an element on a dashboard.

name

This section refers to the name parameter that is part of a dashboard element.

name can also be used as part of a dashboard filter, described on the Dashboard parameters documentation page.

Each name declaration creates a new dashboard element and assigns it a name. Element names must be unique. Names are sometimes referenced in the elements parameter when you're using layout: grid dashboards.

- name: orders_by_date

title

This section refers to the title parameter that is part of a dashboard element.

title can also be used as part of a dashboard, described on the Dashboard parameters documentation page.

title can also be used as part of a dashboard filter, described on the Dashboard parameters documentation page.

The title parameter lets you change how an element's name will appear to users. If unspecified, the title defaults to the element name.

Consider this example:

- name: sales_overview
  title: '1) Sales Overview'

If you used this format, instead of the element appearing as Sales Overview, it would appear as 1) Sales Overview.

type

This section refers to the type parameter that is part of a dashboard element.

type can also be used as part of a dashboard filter, described on the Dashboard parameters documentation page.

type can also be used as part of a join, described on the type (for joins) parameter documentation page.

type can also be used as part of a dimension, described on the Dimension, filter, and parameter types documentation page.

type can also be used as part of a measure, described on the Measure types documentation page.

The type parameter determines the type of visualization to be used in the element.

- name: element_name
  type: text | looker_grid | table | single_value | looker_single_record |
        looker_column | looker_bar | looker_scatter | looker_line | looker_area |
        looker_pie | looker_donut_multiples | looker_funnel | looker_timeline |
        looker_map | looker_google_map | looker_geo_coordinates | looker_geo_choropleth | looker_waterfall | looker_wordcloud | looker_boxplot

See the type (for LookML dashboards) documentation page for an overview of the different types of LookML dashboard elements.

height

This section refers to the height parameter that is part of a dashboard element.

height can also be used as part of a dashboard row, described on the Dashboard parameters documentation page.

For dashboards with tile or static layouts

The height parameter defines the height of an element, in units of tile_size (which is defined in pixels), for layout: tile and layout: static dashboards.

For example, the following code specifies tile_size: 100 and height: 4, making the orders_by_date element 400 pixels in height.

- dashboard: sales_overview
  tile_size: 100
  ...

  elements:
  - name: orders_by_date
    height: 4
    ...

For dashboards with newspaper layout

The height parameter defines the height of an element, in units of row, for layout: newspaper dashboards.

A dashboard with newspaper layout defaults to an element height of 6 rows, or about 300 pixels. The minimum height is 1 row for dashboards with a preferred viewer parameter set to dashboards-next. The minimum height is 2 rows for dashboards with a preferred viewer parameter set to dashboards.

For example, the following code sets an element to be 12 rows tall, or twice as tall as other elements that are set to the default:

- dashboard: sales_overview
  layout: newspaper
  ...

  elements:
  - name: orders_by_date
    height: 12
    ...

width

This section refers to the width parameter that is part of a dashboard element.

width can also be used as part of a dashboard, described on the Dashboard parameters documentation page.

The width parameter defines the width of an element, in units of tile_size, for layout: tile and layout: static dashboards.

For example, the following code specifies tile_size: 100 and width: 4, making the orders_by_date element 400 pixels in width.

- dashboard: sales_overview
  tile_size: 100
  ...

  elements:
  - name: orders_by_date
    width: 4
    ...

The width parameter defines the width of an element, in units of columns, for layout: newspaper dashboards.

A dashboard with newspaper layout defaults to a width of 24 columns.

For example, the following code sets the element to half the width of the dashboard:

- dashboard: sales_overview
  layout: newspaper
  ...

  elements:
  - name: orders_by_date
    width: 12
    ...

top

The top parameter defines the top-to-bottom position of an element, in units of tile_size, for layout: static dashboards.

For example, the following code specifies tile_size: 100 and top: 4, positioning the top edge of the orders_by_date element 400 pixels from the top of the dashboard.

- dashboard: sales_overview
  tile_size: 100
  ...

  elements:
  - name: orders_by_date
    top: 4
    ...

left

The left parameter defines the left-to-right position of an element, in units of tile_size, for layout: static dashboards.

For example, the following code specifies tile_size: 100 and left: 4, positioning the left edge of the orders_by_date element 400 pixels from the left side of the dashboard.

- dashboard: sales_overview
  tile_size: 100
  ...

  elements:
  - name: orders_by_date
    left: 4
    ...

row

For layout: newspaper dashboards, the row parameter defines the row that the top edge of an element is placed on.

A dashboard begins with row 0 at the top of the dashboard. A dashboard with newspaper layout defaults to an element height of 6 rows, meaning the dashboard elements at the top of a dashboard (row: 0) would default to taking up rows 0-5.

Each row is 50 pixels tall, which means the default element height of 6 rows is 300 pixels.

For example, the following code sets an element to be set on the second row of elements in the dashboard, assuming elements are set at the default height:

- dashboard: sales_overview
  layout: newspaper
  ...

  elements:
  - name: orders_by_date
    row: 6
    ...

col

For layout: newspaper dashboards, the col parameter defines the column that the left edge of the element is placed on.

Dashboards are divided into 24 columns. A dashboard begins with column 0 at the left of the dashboard. A dashboard with newspaper layout defaults to an element width of 8 columns, meaning the dashboard elements at the left of a dashboard (col: 0) would default to taking up columns 0-7.

For example, the following code sets an element to be set in the third column of elements in the dashboard:

- dashboard: sales_overview
  layout: newspaper
  ...

  elements:
  - name: orders_by_date
    col: 16
    ...

refresh

This section refers to the refresh parameter that is part of a dashboard element.

refresh can also be used as part of a dashboard, described on the Dashboard parameters documentation page.

The refresh parameter allows an element to reload automatically on some periodic basis, thereby retrieving fresh data. This is often helpful in settings where a dashboard is constantly displayed, such as on an office TV. Note that the dashboard must be open in a browser window for this parameter to have an effect. This setting does not run in the background to "pre-warm" the dashboard cache.

The refresh rate can be any number (without decimals) of seconds, minutes, hours, or days. For example:

- name: orders_by_date
  refresh: 2 hours

Use caution when setting short refresh intervals. If the query behind the element is resource-intensive, certain elements may strain your database more than desired.

note

You can add descriptive notes to elements like this:

- name: element_name
  note:
    text: 'note text'
    state: collapsed | expanded
    display: above | below | hover

note has the subparameters text, state, and display.

text

The text subparameter specifies the text displayed in the note. The text can be localized.

state

The state subparameter determines whether the note will be collapsed or expanded if it is too big to fit on a single row within the element's width. If you choose collapsed and the note is too long, the note will end in a clickable ellipsis (...) that can be used to read the full note.

display

The display subparameter determines where the note is displayed on an element. above places the note at the top of an element, below places it at the bottom of an element, and hover requires the user to hover their mouse over the element to see the note.

Query parameters

When defining a LookML dashboard element, you must specify values for at least the model and explore query parameters, and at least one field must be specified using either the dimensions parameter or the measures parameter. You can also use the other query parameters to control the way data is displayed in a dashboard element.

model

The model parameter defines the model to use for the element query. If unspecified, it will default to the model where the dashboard resides.

- name: orders_by_date
  model: ecommerce

The model parameter accepts LookML constants. You can define a constant in the manifest file for your project, then use the syntax "@{constant_name}" to set the constant as the value for model. Using a constant lets you define the name of a model in one place, which is particularly useful if you're updating the name of a model that is used by multiple dashboard elements.

For more information and an example of using constants with LookML dashboards, see the constant parameter documentation page.

explore

This section refers to the explore parameter that is part of a dashboard element.

explore can also be used as part of a model, described on the explore parameter documentation page.

explore can also be used as part of a dashboard filter, described on the Dashboard parameters documentation page.

The explore parameter defines the Explore to use for the element query.

- name: orders_by_date
  explore: order

The explore parameter accepts LookML constants. You can define a constant in the manifest file for your project, then use the syntax "@{constant_name}" to set the constant as the value for explore. Using a constant lets you define the name of an Explore in one place, which is particularly useful if you're updating the name of an Explore that is used by multiple dashboard elements.

For more information and an example of using constants with LookML dashboards, see the constant parameter documentation page.

dimensions

The dimensions parameter defines the dimension or dimensions to use for the element query. Use the syntax view_name.dimension_name to specify the dimension. Don't include dimensions if the query doesn't have any.

## single dimension example
- name: orders_by_date
  dimensions: order.order_date

## multiple dimension example
- name: orders_by_date
  dimensions: [order.order_date, customer.name]

measures

The measures parameter defines the measure or measures to use for the element query. Use the syntax view_name.measure_name to specify the measure. Don't include measures if the query doesn't have any.

## single measure example
- name: orders_by_date
  measures: order.count

## multiple measure example
- name: orders_by_date
  measures: [order.count, order_item.count]

sorts

The sorts parameter defines the sorts to be used for the element query. The primary sort is listed first, then the secondary sort, and so on. Use the syntax view_name.field_name to specify the dimension or measure. Don't include sorts if you want to use Looker's default sort order. Descending sorts are suffixed with desc; ascending sorts don't need a suffix.

## single sort example
- name: orders_by_date
  sorts: order.order_date desc

## multiple sort example
- name: orders_by_date
  sorts: [order.order_date desc, customer.name]

pivots

The pivots parameter defines the dimensions that should be pivoted for the element query. Use the syntax view_name.dimension_name to specify the dimension. Don't include pivots if the query doesn't have any.

## single pivot example
- name: orders_by_date
  pivots: customer.gender

## multiple pivot example
- name: orders_by_date
  pivots: [customer.gender, customer.age_tier]

limit

The limit parameter defines the row limit that should be used for the element query. The limit applies to the number of rows before any pivots are applied.

- name: orders_by_date
  limit: 100

filters

This section refers to the filters parameter that is part of a dashboard element.

filters can also be used as part of a dashboard, described on the Dashboard parameters documentation page.

filters can also be used as part of a measure, described on the filters parameter documentation page.

The filters parameter defines the non-changeable filters that should be used for the element's query. If you would like filters that a user can change in the dashboard, you should set up the filters using filters for dashboards, then apply them to the elements using listen.

The syntax for filters is:

- name: element_name
  filters:
    orders.created_date: 2020/01/10 for 3 days
    orders.status: Shipped
    # You can create multiple filter statements

Each filter can accept a Looker filter expression or a value constant. You can also use the _localization or _user_attributes Liquid variables in the filter expression for flexible filter values.

listen

Dashboard filters let viewers interactively refine the data that is shown in dashboard elements. Define dashboard filters with the filters parameter for LookML dashboards. Then, use the listen parameter to link dashboard elements to the dashboard filter.

The syntax for listen is as follows:

- name: element_name
  listen:
    filter_name_goes_here: dimension or measure on which to apply
                           the filter using view_name.field_name syntax
    # You can add more than one listen statement

Add the listen parameter to an element, and then provide the name of the filter followed by a colon and a reference to the field to which the filter should apply, using the view_name.field_name syntax. For example, you might create a filter called Date that requires a user to enter a date into the filter field in the UI. You could then apply the value that the user enters to the orders_by_date element like this:

- dashboard: sales_overview
  ...

  filters:
  - name: date
    type: date_filter

  elements:
 - name: orders_by_date
    listen:
      date: order.order_date
    ...

For additional examples of using the filters parameter and the listen parameter to apply dashboard filters to individual dashboard elements, see Building LookML dashboards.

query_timezone

The query_timezone parameter specifies the time zone in which the query will be run. The time zone options are shown on the Values for timezone documentation page. If you want the query to run using the viewer's time zone, you can assign the value as user_timezone.

- name: orders_by_date
  query_timezone: America/Los Angeles

- name: orders_by_customer
  query_timezone: user_timezone

merged_queries

The merged_queries parameter lets you combine the results of multiple queries into a single dashboard element. Define each source query within the element's merged_queries parameter and use the join_fieldssubparameter to specify how the results should be merged.

The following sample LookML code creates a merged results element of type: looker_grid. In this example, the merged_queries parameter is used to create a dashboard element that combines data from two separate queries into a single table chart:

- name: merged_results_element
  title: Merged Results Tile
  type: looker_grid
  merged_queries:
  - model: ecommerce
    explore: users
    type: table
    fields: [users.state, users.count, users.city]
    sorts: [users.count desc 0]
    limit: 5000
    column_limit: 50
    query_timezone: UTC
    listen:
    - State: users.state
  - model: ecommerce
    explore: users
    type: table
    fields: [users.state, users.city]
    sorts: [users.state]
    limit: 500
    column_limit: 50
    query_timezone: UTC
    join_fields:
    - field_name: users.state
      source_field_name: users.state
    - field_name: users.city
      source_field_name: users.city
    listen:
    - State: users.state

In this example, the dashboard element combines data from two source queries that are based on the users Explore in the ecommerce model. The primary query includes the users.state, users.count, and users.city fields, and it sorts the results by the users.count field. The second source query includes the users.state and users.city fields and sorts the results by the users.state field.

The join_field parameter merges the source queries based on matching values in the users.state and users.city fields.

The listen parameter applies a State filter to both queries, which lets dashboard viewers refine the query results that are displayed in the dashboard tile by selecting a specific state.

Example: Merging company data

Suppose you want to create a merged query that combines information about companies from two different Explores: company_info and companies. You want to join the queries on the ipo.stock_symbol, companies.name, and companies.contact_email fields from each Explore to create a query that returns results for company name, company contact email, IPO year, stock symbol, number of employees, and job count. You can define the merged query element in LookML as follows:

- name: merged_results_element
  title: Merged Results Tile
  merged_queries:
  - model: market_research
    explore: company_info
    fields: [companies.name, companies.contact_email, ipo.public_year, ipo.stock_symbol]
    filters:
      companies.contact_email: "-NULL"
      ipo.valuation_amount: NOT NULL
    sorts: [ipo.public_year desc]
  - model: company_data
    explore: companies
    fields: [companies.name, ipo.stock_symbol, companies.contact_email,
      companies.number_of_employees, jobs.job_count]
    filters:
      companies.number_of_employees: NOT NULL
      ipo.stock_symbol: "-NULL"
      companies.contact_email: "-NULL"
    sorts: [jobs.job_count desc]
    join_fields:
    - field_name: ipo.stock_symbol
      source_field_name: ipo.stock_symbol
    - field_name: companies.name
      source_field_name: companies.name
    - field_name: companies.contact_email
      source_field_name: companies.contact_email

Applying filters to merged query elements

The previous example of a merged query element demonstrates how to apply hard-coded filters directly within each source query by using the filters parameter. For example, the filters companies.contact_email: "-NULL" and ipo.valuation_amount: NOT NULL in the primary query restrict the results to companies that have valid contact emails and valuations. These query-level filters pre-filter the data before merging the queries and cannot be changed by the user.

You can also apply dashboard filters to merged query elements by using the listen parameter within the definition of each source query. For example, suppose you have a dashboard filter named Industry that you defined at the dashboard level by using the filters parameter for LookML dashboards:

filters:
- name: Industry
  title: Industry
  type: field_filter
  ui_config:
    type: dropdown_menu
    display: inline
  model: market_research
  explore: company_info
  field: companies.industry

To apply the Industry filter to the companies.industry field in both source queries, add the listen parameter to each of the merged query's source query definitions as follows:

listen:
  Industry: companies.industry

For example, the following sample code adds the Industry filter to both source queries in the merged results element from the previous example.

- name: merged_results_element
  title: Merged Results Tile
  merged_queries:
  - model: market_research
    explore: company_info
    fields: [companies.name, companies.contact_email, ipo.public_year, ipo.stock_symbol]
    filters:
      companies.contact_email: "-NULL"
      ipo.valuation_amount: NOT NULL
    sorts: [ipo.public_year desc]
    listen:
      Industry: companies.industry
  - model: company_data
    explore: companies
    fields: [companies.name, ipo.stock_symbol, companies.contact_email,
      companies.number_of_employees, jobs.job_count]
    filters:
      companies.number_of_employees: NOT NULL
      ipo.stock_symbol: "-NULL"
      companies.contact_email: "-NULL"
    sorts: [jobs.job_count desc]
    join_fields:
    - field_name: ipo.stock_symbol
      source_field_name: ipo.stock_symbol
    - field_name: companies.name
      source_field_name: companies.name
    - field_name: companies.contact_email
      source_field_name: companies.contact_email
    listen:
      Industry: companies.industry

With this addition, when a user interacts with the Industry dashboard filter, the corresponding source query in the merged query element will be filtered accordingly.

Tip: Each source query can listen to one or more dashboard filters. This lets you define filter logic for each source query independently, regardless of the number of source queries in your merged results element. If a query does not have a listen parameter, then it won't be affected by any dashboard filters.

Plot parameters

Most of the parameters described in this section correspond to the options in the Plot section of the visualization editor for bar charts.

stacking

The stacking parameter specifies how series are clustered visually on a chart.

• normal: Stacks bars, lines, and points one on top of each other, as in a normal stacked column chart.

• percent: Stack bars, lines, and points to total 100% fill of the chart and set the y-axis values to be percentages.

• '': Bars, lines, and points are not stacked and are instead grouped.

stacking: normal | percent | ''

## default value: ''

ordering

The ordering parameter lets you order each slice of a stacked or stacked percentage chart by the size of each slice.

• none (or no value is specified): Series values will be ordered according to their positions in the data table.
• asc: The smallest series values will be positioned at the bottom, with values increasing in size toward the top of the column stack.
• desc: The largest values will be positioned at the bottom, with values decreasing in size toward the top.

column_spacing_ratio

The column_spacing_ratio parameter sets the spacing between columns within a group. This is available for charts that have stacking set to the default grouped setting, specified using '' in LookML. This parameter accepts values between 0 and 1. 0 is associated with minimum spacing between columns within a group, and 1 is associated with maximum spacing between columns within a group.

column_space_ratio: number between 0 and 1

column_group_spacing_ratio

The column_group_spacing_ratio parameter sets the spacing between column groups. This parameter accepts values between 0 and 1. 0 is associated with minimum spacing between column groups, and 1 is associated with maximum spacing between column groups.

column_group_spacing_ratio: number between 0 and 1

hide_legend

This declaration will hide the legend from the visualization.

hide_legend: true | false

## default value: false

legend_position

If hide_legend is set to false (and there is more than one series), you can use the legend_position parameter to specify whether the series legend will appear to the left, center, or right of the chart.

legend_position: center | left | right

## default value: false

hidden_fields

The hidden_fields parameter indicates which fields, if any, are used in the query but hidden in the chart. Any hidden fields will appear in the data table section of an Explore.

hidden_fields: [inventory_items.count, distribution_centers.id]

limit_displayed_rows

The limit_displayed_rows parameter lets you show or hide rows in a visualization, based on their position in the results. For example, if your visualization displays a 7-day rolling average, you may want to hide the first 6 rows. Setting this to true lets you specify the values and positions in the visualization to which this applies using the limit_displays_rows_values parameter and its subparameters.

limit_displayed_rows: true
limit_displayed_rows_values:
  show_hide: hide | show
  first_last: first | last
  num_rows: '10'

limit_displayed_rows_values

Use the limit_displayed_rows_values parameter, and its subparameters show_hide, first_last, and num_rows, with limit_displayed_rows to specify which rows to show or hide in a visualization. See the limit_displayed_rows section for sample usage.

show_hide

The show_hide subparameter sets whether to hide certain rows from the visualization. Set show_hide to show to display only a limited number of rows in the visualization, and set show_hide to hide to exclude certain rows from the visualization.

first_last

The first_last subparameter sets whether the rows to be hidden or shown will be the first or last rows in the result set. Setting first_last to first shows or hides the first rows, while set first_last to last shows or hides the last rows.

num_rows

The num_rows subparameter sets the number of rows to be hidden or shown. For example, num_rows: '10' will show or hide either the first or last 10 rows of the result set from the visualization.

Series parameters

The parameters described in this section correspond to the options in the Series section of the visualization editor for bar charts.

colors

The colors parameter specifies a list of colors for the series. The first color in the list corresponds to the first data series. If there are more series than listed colors, the colors will start over at the beginning.

colors: [blue, orange, yellow, red, purple]

For all chart attributes that specify a color, the color value can take a hex string, such as #2ca6cd, or a CSS named color string, such as mediumblue.

series_colors

Set the colors of the series based on the series name, using name: value pairs.

For a pivoted chart, the series names are the pivot names.

series_colors:
  'Yes': skyblue
  'No': '#000000'

For a chart with multiple measures, the series names are the measure field names.

series_colors:
  inventory_items.count: crimson
  orders.count: green

If the series name is not listed in series_colors, the chart will default to the list of colors provided in colors. If colors is not set, the chart will fall back to the default color scheme.

series_labels

Set the labels of one or more series based on the series name, using name: label pairs.

For a pivoted chart, the series names are the pivot names.

series_labels:
  'Yes': iOS Users
  'No': Android Users

For a chart with multiple measures, the series names are the measure field names.

series_labels:
  inventory_items.count: Inventory
  orders.count: Orders

series_types

The series_type parameter lets you use different Cartesian chart types in the same visualization. Use this parameter to assign a chart type to each series that you want to change. The type options are line, column, bar, area, and scatter.

series_types:
  series_a_name: column
  series_b_name: line

All series default to the initial chart type that you choose; you can then modify individual series.

show_view_names

The show_view_names parameter determines whether view names are displayed in chart labels, such as axis names and column names.

show_view_names: true | false

## default value: true

Value parameters

The parameters described in this section correspond to the options in the Values section of the visualization editor for bar charts.

show_value_labels

Display the value of a bar, line, or point next to the data point.

show_value_labels: true | false

## default value: false

show_null_labels

Determine whether labels should be shown for null columns or bars, when show_value_labels is set to true.

show_null_labels: true | false

## default value: false

labelColor

If labelColorEnabled is set to true, use the labelColor parameter to specify a custom color for the label and percentages. Labels where labelPosition is set to inline will appear in the color chosen, and labels on either side of the chart will appear about 40% darker than the chosen color.

labelColor: "#4FBC89"

font_size

Set the font size of value labels using any valid CSS size, such as 10px or 12px.

font_size: 14px

label_rotation

Set the rotation of the value labels. This parameter accepts values between -360 and 360, denoting the number of degrees to rotate the labels. This parameter is only available when stacking is set to the default ('').

label_rotation: -45

label_value_format

The label_value_format parameter specifies the formatting to apply to a value, independent of any formatting applied to the underlying dimension or measure. The field accepts Excel-style formatting. If label_value_format is not specified, the value will be displayed in the format of the underlying dimension or measure.

You can read about how to specify these formats on the Adding custom formatting to numeric fields documentation page. However, color formatting is not supported in Looker.

The formatting used in the label_value_format LookML dashboard parameter is the same as formatting used with the value_format LookML parameter, except that the value_format LookML parameter requires the formatting string to be enclosed in double quotes.

label_value_format: '0.00'

show_totals_labels

Set whether totals are displayed for each stacked group of data points on a chart. This parameter is only available when stacking is set to normal.

show_totals_labels: true | false

hidden_series

The hidden_series parameter specifies which series will be disabled in the chart, meaning that the series will appear in the chart legend, but grayed out. Users can enable disabled series by clicking them in the chart legend. Consequently, hidden_series may not worked as desired with hide_legend: true.

For a pivoted chart, the series names are the pivot names:

hidden_series: ['Yes', 'No']

For a chart with multiple measures, the series names are the measure field names:

hidden_series: [inventory_items.count, orders.count]

Used together with the show_silhouette parameter, you can specify whether disabled series are shown as a lightly shaded representation in the chart itself.

show_silhouette

When the show_silhouette parameter is set to true and stacking is set to normal, a disabled series will be displayed as a lightly shaded silhouette.

show_silhouette: true | false

totals_color

This parameter defines the color of the totals labels in a chart. The totals_color parameter is only available when stacking is set to normal.

totals_color: "#2ca6cd"

X-axis parameters

The parameters described in this section correspond to the options in the X section of the visualization editor for bar charts.

For bar charts, the x-axis and y-axis are reversed.

x_axis_scale

This parameter determines how the x-axis scale is calculated.

• auto: The scale will be inferred from the underlying data. This is the default setting.
• ordinal: The data will be plotted as evenly spaced, discrete entries.
• time: The data will be plotted as time and the axis will be labeled appropriately. This will not work if the underlying data can't be converted to dates.

x_axis_scale: auto | ordinal | time

## default value: auto

x_axis_reversed

Set the direction of the x-axis. When x_axis_reversed is set to false, values increase from top to bottom. When it is set to true, values decrease from top to bottom.

show_x_axis_label

This parameter determines whether labels are shown on the x-axis.

show_x_axis_label: true | false

## default value: true

x_axis_label

This parameter specifies a label for the x-axis. You can use this parameter when show_x_axis_label is set to true.

x_axis_label: Order Date

show_x_axis_ticks

This parameter determines whether value labels are shown on the x-axis.

show_x_axis_ticks: true | false

## default value: true

x_axis_gridlines

This parameter determines whether gridlines are extended from the x-axis.

x_axis_gridlines: true | false

## default value: false

x_axis_label_rotation

The x_axis_label_rotation parameter defines the rotation of the x-axis labels in degrees. This parameter accepts values between -360 and 360, denoting the number of degrees to rotate the labels.

x_axis_label_rotation: -45

x_axis_datetime_label

This parameter specifies a format string for the x-axis labels, if they are dates. If x_axis_scale is not set to time, this does nothing.

x_axis_datetime_label: '%b %d'

See the Time formatting for charts documentation page for information on formatting times.

x_axis_zoom

This parameter specifies whether users can zoom into the x-axis of the visualization. When x_axis_zoom is set to true, zooming is available. When x_axis_zoom is set to false, zooming is not available.

If x_axis_zoom is set to false, y_axis_zoom is disabled.

x_axis_zoom: true | false

# default value: true

Y-axis parameters

Under construction: We are working on updating this section of the page. Meanwhile, you can check out the Bar chart options documentation page to view equivalent visualization menu options for the y-axis.

The parameters described in this section correspond to the options in the Y section of the visualization editor for bar charts.

For bar charts, the x-axis and y-axis are reversed.

y_axis_gridlines

This parameter determines whether gridlines are extended from the y-axis.

y_axis_gridlines: true | false

## default value: true

y_axis_reversed

This parameter sets the direction of the x-axis. When y_axis_reversed is set to false, values increase from left to right. When it is set to true, values increase from right to left.

## y_axis_reversed: true | false

# default value: false

reference_lines

This parameter specifies an array of values for specifying reference lines and regions.

See the Dashboard reference line parameters documentation page for information on setting up reference lines.

reference_lines:
   # reference line options

y_axis_zoom

This parameter specifies whether users can zoom into the y-axis of the visualization. When y_axis_zoom is set to true, zooming is available.

When y_axis_zoom is set to false, users cannot zoom into smaller portions of the y-axis. However, users may still be able to zoom into smaller portions of the x-axis if the x_axis_zoom parameter is set to true.

If x_axis_zoom is set to false, y_axis_zoom is disabled.

y_axis_zoom: true | false

# default value: true