Hypsometric Setting/Color Table

Usage

Hypsometric setting is a common method of visual expression. It expresses and distinguishes different attributes of 3D data through a certain order of color changes or shades of hue. The platform supports setting color tables, transparency, display areas, maximum/minimum visible values, and other parameters for model datasets, LAS datasets, S3M tiles, and TIN terrain tiles to achieve hypsometric expression of data; it also supports setting color tables for 3D raster volume data.

The hypsometric setting effect of TIN terrain is shown in the figure below:

Function Entry

  • Layer Manager -> Model/Tile/LAS Layer context menu -> Layer Properties -> Layer Properties panel -> Hypsometric Setting
  • Layer Manager -> TIN Terrain Tile Layer context menu -> Properties -> Properties panel -> Hypsometric Setting

Parameter Description

Depending on the layer type, the layer properties panel displayed will be slightly different. As shown in the figure below, from left to right are the hypsometric setting modules of the layer properties panel for S3M tiles, TIN terrain tiles, and model datasets.
  • Feature Value Field: When the data corresponding to the currently selected layer is S3M tiles or a LAS dataset, hypsometric setting can be performed based on the specified feature value field.
    • Height: Performs hypsometric setting based on the height value of the data. The color gradient represents the elevation change of the data.
    • Category: Assigns different colors according to the category of the data (such as ground, vegetation, building), which can be used to quickly identify ground object types.
    • Intensity: Performs hypsometric setting based on the intensity value of the data. The color gradient represents the change in point cloud echo intensity.
    • When the data has feature value fields other than height, category, or intensity, the feature value fields contained in the data will be displayed here.
  • Display Area: When the data corresponding to the currently selected layer is TIN terrain tiles, hypsometric setting can be performed for a specified area.
    • Display All: The default is "Display All", meaning all data in the layer participates in hypsometric expression.
    • Draw Area: After checking this item, when the mouse moves to the scene area, it changes to an edit drawing state. You can click and draw a polygon area on the model, indicating that the model within the polygon area displays hypsometric setting, and the area outside does not display hypsometric setting.
    • Select Area: After checking this item, the "Select Area from Dataset" drop-down box is activated. Select the data source and polygon/3D polygon dataset opened in the current workspace. When the polygon dataset has multiple polygons, the polygon with the smallest "SmID" value displays hypsometric setting, and other polygons do not take effect.
  • Display Mode: Sets the display mode of data hypsometric setting.
    • Do Not Display: Not displayed by default, meaning hypsometric expression is not performed.
    • Line Fill: Performs hypsometric expression of data based on contour lines.
    • Area Fill: Performs hypsometric expression of data using area fill.
    • Line and Area Fill: Performs hypsometric expression of data by combining contour lines and area fill.
  • Line Color: When the display mode is Line Fill or Line and Area Fill, click the color drop-down box to the right of Line Color to select the color scheme of contour lines.
  • Color Table: When the display mode is Area Fill or Line and Area Fill, click the color drop-down box to the right of Color Table to select the color scheme of the fill area. For more content, see Color Table Settings Dialog Box.
  • Invalid Value Color: Only when the data corresponding to the currently selected layer is S3M tiles, you can set the color displayed for invalid values in the data through the drop-down menu. The default is white.
  • Transparency: Sets transparency. The value range is 0-100. The default transparency is 0, meaning completely opaque; as the value increases, it becomes more transparent; the maximum value is 100, meaning completely transparent.
  • Additional Height (m): Only when the data is S3M tiles and the feature value field is Height, you can set the additional height value by adjusting this parameter. Use case 1 of this parameter: When the height (z) value of the insertion point of the original S3M tile data is set to a non-zero value, the corresponding value needs to be filled in here to ensure the correctness of hypsometric setting. Use case 2 of this parameter: When the layer's bottom elevation is set and you want to remove the influence of this parameter on flood analysis, you can set the corresponding value here.
  • Color Table Minimum: Enter a number to set the elevation/point cloud feature value corresponding to the leftmost color of the texture color table. The default is the minimum value of the model elevation/point cloud feature value.
  • Color Table Maximum: Enter a number to set the elevation/point cloud feature value corresponding to the rightmost color of the texture color table. The default is the maximum value of the data elevation/point cloud feature value. When the color table maximum is set to less than the maximum visible value, the part of the data height/point cloud feature value exceeding the color table maximum will be displayed with the rightmost color of the color table.
  • Minimum Visible Value: Sets the minimum value of the model elevation/point cloud feature value participating in hypsometric expression. The default is the minimum value of the data elevation/point cloud feature value. Data less than this value will not display hypsometric setting.
  • Maximum Visible Value: Sets the maximum value of the model elevation/point cloud feature value participating in hypsometric expression. The default is the maximum value of the data elevation/point cloud feature value. Data greater than this value will not display hypsometric setting.
  • Contour Interval: When the display mode is Line Fill or Line and Area Fill, set the contour interval to control the spacing of contour lines, in meters. The default value is 100, meaning a contour line is displayed every 100 meters.
  • Sampling Mode: Provides two modes: Nearest Sampling and Linear Sampling.
  • Use Feature Value: When the data corresponding to the currently selected layer is a model dataset, checking Use Feature Value is supported. After checking, if the model dataset has feature values, their minimum and maximum values will be used as the minimum visible value and maximum visible value of hypsometric setting. A model dataset with feature values can be generated by specifying feature values when using the Build TIM function, or by using the voxel grid Extract Property function.
  • Intensity Adjustment: When the data corresponding to the currently selected layer is a LAS dataset or point cloud tile, after checking Intensity Adjustment, the data visualization effect is adjusted by associating intensity values with a color mapping table, making the data appear more realistic and three-dimensional.
  • Volume Data: The volume data parameter is the result of voxel grid overlay generating tiles. Different volume data parameters can be selected to express different attribute fields. For details, see Voxel Grid Overlay Model Tiles.