Change the symbol style

Once you've selected a map theme—for example, using circles or colors to show population—you can make changes to its appearance that are immediately reflected on the map. ArcGIS for Power BI gives you control over the graphic elements, such as symbols, colors, transparency, and classification types.

The styling choices you see when you click Style options Style options are determined by the nature of the data you're mapping and the map theme you've selected.

Note:

The default styling options are different depending on which field wells contain values and the nature of those values.

If you make global styling changes and then change any of the visual's field wells, some styling changes you initially made to the layer may be lost and reverted to default values. For example, if you change the point symbol from a circle to a square, the symbol will remain a square if you replace or add a field to the Color field well because the color field doesn't affect the symbol. If you make changes to color breaks in a classification and then replace the existing Color field well, however, the style will revert to defaults because you're changing the values used to render the color ramp.

To change the style of the symbols on your layer, do the following:

  1. Open a map-enabled report or create a new one. If necessary, place the report in Author mode.
  2. In the Layers list, click Layer options Layer options on the data layer you want to modify and choose Symbology Symbology.
    Tip:

    The Symbology option appears only on layers created using Power BI data.

    The Symbology pane appears, listing available map theme options based on the nature of the layer's data.

  3. Click a map theme to select it.

    The map automatically displays the new theme.

  4. Hover over your chosen theme and click Style options Style options.
  5. Change the symbol styling options as desired.

    Different styling options are available for each map theme; refer to the sections below for more information about each one.

    Any changes you make appear immediately on the map.

Location only

To change the symbol styling for a map styled using the Location only theme, do any of the following:

  1. In the Symbology pane, hover over the Location only theme and click Style options Style options.
  2. In the Symbol style category, you can change the symbol shape by choosing one of the listed shapes. Symbol options are available only for point locations, not polygons.

    To see additional symbol options, click Advanced options.

  3. In Advanced options, you can set the following symbol style options:
    • In the Shape section, choose a symbol set from the Symbols drop-down menu, such as a set displaying only symbols related to government or infrastructure. Click the symbol you want to use. Use the Size slider or type in a value to adjust the size of the symbol.

      Note:
      Point symbols that represent no value are shown on the map and Layers list using the default symbol and color.

    • In the Fill section, change the symbol's Fill color by selecting a new fill color or entering color values. Adjust the symbol's Fill transparency by moving the slider to the left (less transparent) or to the right (more transparent), or type a percentage value in the field. Turn off the Enable fill toggle button to remove fill color.

    • In the Outline section, change the symbol's Outline color by selecting a new outline color or entering color values. Adjust the symbol's Outline width by moving the slider to the left (thinner) or to the right (thicker), or type a pixel value in the field. Adjust the symbol's Outline transparency by moving the slider to the left (less transparent) or to the right (more transparent), or type a percentage value in the field. Turn off the Enable outline toggle button to remove outline color.

  4. To return to the simplified view, click Basic options.

Heat map

To change the styling for a map using the Heat map theme, do any of the following:

  1. In the Symbology pane, hover over the Heat map theme and click Style options Style options.
  2. To set heat map style options, do the following:
    • In the Color ramps category, choose a color ramp set from the Color ramps drop-down menu, such as a set displaying only color ramps optimized for visual impairments or dark backgrounds. Click the color ramp you want to use.

    • In the Area of influence category, use the slider to adjust the appearance of the heat map. Drag the top handle down to make clusters smaller and more distinct, and drag the bottom handle up to make the clusters larger and smoother. Use the Blur radius slider to increase or decrease the blur radius, or type a value into the field.

    • Optionally, drag a numeric value into the Size field well to better define the heat map properties.

Note:

Because the heat map uses a specified color ramp to render point density, any value in the Color field well is ignored.

Size

To style a map layer proportionally by size, drag a numerical value into the Size field well.

To change the way proportional symbols appear on the map, do the following:

  1. In the Symbology pane, hover over the Size theme and click Style options Style options.

    Expand the Symbol style category.

  2. In the Symbol style category, you can change the symbol shape by choosing one of the listed shapes. Symbol options are available only for point locations, not polygons.

    To see additional symbol options, click Advanced options.

  3. In Advanced options, you can set the following Symbol Style options:
    • In the Shape section, choose a symbol set from the Symbols drop-down menu, such as a set displaying only symbols related to government or infrastructure. Click the symbol you want to use. Use the Size slider or type in a value to adjust the size of the symbol.

      Note:
      Point symbols that represent no value are shown on the map and Layers list using the default marker and color.

    • In the Fill section, change the symbol's Fill color by selecting a new fill color or entering color values. Adjust the symbol's Fill transparency by moving the slider to the left (less transparent) or to the right (more transparent), or type a percentage value in the field. Turn off the Enable fill toggle button to remove fill color.

    • In the Outline section, change the symbol's Outline color by selecting a new outline color or entering color values. Adjust the symbol's Outline width by moving the slider to the left (thinner) or to the right (thicker), or type a pixel value in the field. Adjust the symbol's Outline transparency by moving the slider to the left (less transparent) or to the right (more transparent), or type a percentage value in the field. Turn off the Enable outline toggle button to remove outline color.

  4. You can also modify the way your data is classified in groups on the map. In the Symbology pane, expand the Classify data category.
  5. Click the Method drop-down menu and choose one of the following:
    • Natural breaks
    • Equal interval
    • Quantile
    • Manual

    To manually adjust the way the groups are divided, drag the handles on the slider displaying the classification breakdown. To change the number of classes, use the Classes slider, type a numeric value in the field, or click the up and down arrows. To turn off classification, turn off the Classify data toggle button.

  6. You can also modify the range of symbol sizes for the groups of classified data on the map. In the Symbology pane, expand the Size range category.
  7. Move the handles on the sliders or enter numeric values to define the Min. value and Max. value of the proportional symbols.

Color (numerical)

To style a map layer using a graduated color ramp, drag a numerical value into the Color field well. Different symbol styling options appear in the pane depending on whether the data in the Color field well is numerical or categorical.

If you placed numerical values in the Color field well, do any of the following to change the map's styling options:

  1. In the Symbology pane, hover over the Color theme and click Style options Style options.

    Expand the Symbol style category.

  2. In the Symbol style category, you can change the symbol shape by choosing one of the listed shapes. Symbol options are available only for point locations, not polygons.
    Note:

    Point symbols that represent no value are shown on the map and Layers list using the default marker and color.

    To see additional symbol options, click Advanced options.

  3. In Advanced options, you can set the following Symbol Style options:
    • In the Shape section, change the Size parameter of the symbol by moving the Size slider to the left (smaller) or to the right (larger), or type a pixel value in the field.

    • In the Fill section, adjust the symbol's Fill transparency by moving the slider to the left (less transparent) or to the right (more transparent), or type a percentage value in the field.
    • In the Outline section, change the symbol's Outline color by selecting a new outline color or entering color values. Adjust the symbol's Outline width by moving the slider to the left (thinner) or to the right (thicker), or type a pixel value in the field. Adjust the symbol's Outline transparency by moving the slider to the left (less transparent) or to the right (more transparent), or type a percentage value in the field. Turn off the Enable outline toggle button to remove outline color.

  4. You can also modify the way your data is classified in groups on the map. In the Symbology pane, expand the Classify data category.
  5. Click the Method drop-down menu and choose one of the following:
    • Natural breaks
    • Equal interval
    • Quantile
    • Manual

    To manually adjust the way the groups are divided, drag the handles on the slider displaying the classification breakdown. To change the number of classes, use the Classes slider, type a numeric value in the field, or click the up and down arrows. To turn off classification, turn off the Classify data toggle button.

  6. If you turned off classification, you can change the scheme used to render your symbols by numerical value. In the Color ramps category, select one of the themes from the Theme drop-down menu:
    • High to low - Shows the range of values from high to low, using a color ramp ranging from dark to light.
    • Above and below - Shows values above and below a value such as zero or the average.
    • Centered on - Centers on and highlights a particular range of values.
    • Extremes - Highlights the extreme values.
  7. You can also modify the range of colors for the groups of classified data on the map. In the Symbology pane, expand the Color ramps category.
  8. In the Color ramps category, choose a color ramp set from the Color ramps drop-down menu, such as a set displaying only color ramps optimized for visual impairments or dark backgrounds.

    Click the color ramp you want to use. To reverse the colors that represent high values and those that represent low values, click the Reverse ramp colors Reverse ramp colorsbutton. Click the button again to reset the color ramp to its original orientation.

Type (categories)

To style a map layer using different colors, drag a category value into the Color field well. Different symbol styling options appear in the pane depending on the whether the data in the Color field well is numerical or categorical.

If you placed category values in the Color field well, select Type as the map theme and do any of the following to change the map's styling options:

  1. In the Symbology pane, hover over the Type theme and click Style options Style options.

    Expand the Symbol style category.

  2. In the Symbol style category, you can change the symbol shape by choosing one of the listed shapes. Symbol options are available only for point locations, not polygons.

    To see additional symbol options, click Advanced options.

  3. In Advanced options, you can set the following Symbol Style options:
    • In the Shape section, change the Size parameter of the symbol by moving the Size slider to the left (smaller) or to the right (larger), or type a value in the field.

      Note:

      Point symbols that represent no value are shown on the map and Layers list using the default symbol and color.

    • In the Fill section, change the symbol's Fill transparency by moving the slider to the left (less transparent) or to the right (more transparent), or type a percentage value in the field.

    • In the Outline section, change the symbol's Outline color by selecting a new outline color or entering color values. Adjust the symbol's Outline thickness by moving the slider to the left (thinner) or to the right (thicker), or type a pixel value in the field. Adjust the symbol's Outline transparency by moving the slider to the left (less transparent) or to the right (more transparent), or type a percentage value in the field. Turn off the Enable outline toggle button to remove outline color.

  4. You can also modify the range of colors for the symbols on the map. In the Symbology pane, expand the Color ramps category.
  5. In the Color ramps category, choose a color ramp set from the Color ramps drop-down menu, such as a set displaying only color ramps optimized for visual impairments or dark backgrounds.

    Click the color ramp you want to use.

  6. You can also adjust which categorical values display on the map and style individual categories. In the Symbology pane, expand the Unique values category.
  7. In the Unique values category, you can set the following options:
    • Click on an individual symbol to style it. In the Edit symbol window, you can adjust the Shape, Fill, and Outline parameters for just this value.
    • Click the down arrow Move value down next to a row to remove that value from the map. In the Others group, click the up arrow Move value up next to a row to display that value as a styled symbol on the map. Click Move all values out Move all values out to add all values to the map as styled symbols.
    • Uncheck the Others box to remove the values' styling completely. These values will be styled with the default symbol and color.

Color & Size (numerical)

If you fill both the Size and Color field wells in the visualization's field pane with numerical values, you can set different styling options for each value using the Color & Size map theme. Your data will display differently depending on which field well you populate first.

  1. In the Symbology pane, hover over the Color & Size map theme and click Style options Style options.
  2. To style the symbols corresponding to the variable in the Size field well, hover over the Size theme and click Style options.
  3. Follow instructions for styling symbols according to size, as appropriate.
  4. To style the symbols corresponding to the variable in the Color field well, hover over the Color theme and click Style options.
  5. Follow instructions for styling symbols according to color, as appropriate.

Type & Size (categories)

If you fill the Size field well with numerical data and the Color field well with categorical data, you can set different styling options for each value using the Type & Size map theme. Your data will display differently depending on which field well you populate first.

  1. In the Symbology pane, hover over the Type & Size map theme and click Style options Style options.
  2. To style the symbols corresponding to the variable in the Size field well, hover over the Size theme and click Style options.
  3. Follow instructions for styling symbols according to size, as appropriate.
  4. To style the symbols corresponding to the variable in the Color field well, hover over the Type theme and click Style options.
  5. Follow instructions for styling symbols according to type, as appropriate.

Filter null values

In some cases, when you style your map using color or size, the attributes of some locations have a null value, or no value. This means that the locations are missing data or are out of range and cannot be grouped into classifications that you've specified for the layer, such as grouping locations by size.

By default, point symbols that represent no value are displayed on the map using the default symbol and color. You can filter these values so that they do not appear on the map.

To filter symbols with no value, follow these steps:

  1. If necessary, click the ArcGIS for Power BI visualization to activate it.

    For example, the following map shows two locations that are out of range of the specified classifications; these locations appear as blue circles on the map.

    Map showing two null value locations that can't be classified
  2. Expand the Power BI Filters pane.
  3. In the Filters pane, locate the attribute used to style the map layer and expand its category.
  4. From the Show items when the value drop-down menu, choose is not blank.
    Filter items that have no value.

    The map updates; locations with no value do not appear on the map.

    Locations with no value do not appear on the map.