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Change the symbology of a point cloud scene layer

There are several options available to display or symbolize a point cloud scene layer. You can quickly change the display of a point cloud scene layer with the Symbology drop-down menu or the Symbology pane.

There are four symbology renderers to symbolize a point cloud scene layer: Stretch, Classify, Unique Values and RGB. Detailed information for each renderer type is provided below.

The Symbology options for a point cloud scene layer honors any applied point filters. See Change filter options for a point cloud scene layer for more information on point filter options. Only one renderer can be drawn at a time.

For more information on symbology in ArcGIS Pro see: Symbolization, Data classification methods, Symbolize feature layers.

Use the symbology drop-down menu

Use the Symbology drop-down menu to quickly change the symbology of a point cloud scene layer between common representations. The appearance of the point cloud scene layer automatically changes with each selection from the Symbology drop-down menu.

Follow these steps to access the Symbology drop-down menu.

  1. Select a point cloud scene layer in the Contents pane, click the Appearance tab.
  2. From the Appearance tab, in the Drawing group, click the Symbology drop-down arrow.
  3. Select the applicable symbology for the selected point cloud scene layer.

The choice of point-based symbology renderers will vary depending upon the source data, and can include:

Point symbology attributesDescription

Elevation

Symbolize points based on point elevation.

Class

Symbolize the points by the LAS classification code (if available).

Return

Symbolize the points by the lidar pulse return number (if available).

RGB

Symbolize the points by RGB values assigned to each point (if available).

Intensity

Symbolize the points by intensity values assigned to each point (if available).

Point RenderersDescription

Stretch

Stretch values along a color ramp.

Classify

Assigns a color for a group of values.

Unique Values

Assigns a color to each value.

Use the symbology pane

There are four options available to symbolize a point cloud scene layer using the Symbology pane: Stretch, Classify, Unique Values and RGB. Details of each renderer is provided below.

  1. Select a point cloud scene layer in the Contents pane, click the Appearance tab.
  2. From the Appearance tab, in the Drawing group, click the Symbology icon.
  3. This opens the Symbology pane. From here, modify the applicable symbology for the point cloud scene layer selected in the Contents pane.

Stretch

Stretch allows you to define how the values will be stretched between a minimum and maximum value that is associate by a color ramp for either the Elevation or Intensity values.

  • Symbol Size increases or decreases the size of the points based on a percentage.
  • Draw allows you to change between Elevation and Intensity values.
  • Modulate using intensity darkens the base color computed by the renderer based on the intensity value for each point. High intensity values leave the base color unchanged while low intensity may darken the base color. The amount of modulation is proportional to the intensity value within an intensity range representative of the dataset where extreme intensity values (low/high) have been excluded.
  • Color scheme sets the color scheme.
  • Stretch defines the range of values to display.

Classify

Classify allows you to group points together in a specified number of classes when displaying either Elevation or Intensity values.

  • Symbol Size increases or decreases the size of the points based on a percentage.
  • Draw allows you to change between Elevation and Intensity values.
  • Modulate using intensity darkens the base color computed by the renderer based on the intensity value for each point. High intensity values leave the base color unchanged while low intensity may darken the base color. The amount of modulation is proportional to the intensity value within an intensity range representative of the dataset where extreme intensity values (low/high) have been excluded.
  • Edit color scheme allows the modification to the default color scheme used. You can change the Method, Classes and Color scheme used to classify the points. For more information on the standard classification methods provided in ArcGIS Pro see: Data classification methods.
  • Class Breaks defines the range of values to display.

Unique Values

Unique Values assigns a color to each value in your dataset. LAS files of a point cloud scene layer might be attributed with additional information. The Unique Values renderer allows the points to be rendered with individual colors for point attributes such as Class Codes, Number of Returns or Return Number , or other modeled attributes.

  • Symbol Size increases or decreases the size of the points based on a percentage.
  • Draw allows you to symbolize the points using either Class Codes, Number of Returns or Return Number

    or other modeled attributes.

  • Modulate using intensity darkens the base color computed by the renderer based on the intensity value for each point. High intensity values leave the base color unchanged while low intensity may darken the base color. The amount of modulation is proportional to the intensity value within an intensity range representative of the dataset where extreme intensity values (low/high) have been excluded.
  • Edit color scheme allows the modification to the current color scheme.
  • Values defines the range of values to display.

RGB

A point cloud sourced from lidar can be attributed with RGB (red, green, and blue) bands. This attribution often comes from imagery collected at the same time as the data survey. If the data does not have RGB attribution a warning message will display indicating that the renderer could not be opened.

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