Color Table Settings dialog box

Color Map: The color map of Raster Data is used to set the display color of pixels in Raster Data. The color table specifies the colors corresponding to a series of pixel values, that is, the pixel values correspond to the display colors of the pixels, while other pixels without specified colors in the Raster Data will automatically assign their color values according to the size of their pixel values in the numerical sequence formed by the pixel values with specified colors in the color table. That is to say, all pixel values in Raster Data are segmented by the pixel value of the specified color, and the pixel value without the specified color obtains the display color according to the segmentation range of its value.

Color Table Settings dialog description

The color table setting dialog box is shown in the following figure. The user can set the Color Scheme of Raster Data in Raster Layer through this dialog box, or set the color used by a pixel value; You can also adjust the display scheme of Raster Data by adding new pixel values or deleting some pixel values.

Figure: Color Table Settings Dialog Box

List Box Description

  • Serial Number: displays the color serial number in the color table, which is automatically generated and cannot be changed.
  • Color: indicates the display color of the pixel corresponding to the pixel value. Click the cell in the field to pop up the color dialog box, where you can select and set a color to change the display color of the corresponding pixel value.
  • Value: indicates the pixel value. You can edit the Color Field: Click a cell in the field, and when you click the mouse again, the cell becomes editable. In addition, click Color Field to sort the Color Field.

Toolbar Description

  • Click Add to pop up a Default color palettes, and add the selected color to the back of the color list box.
  • Click the "Batch Add" button to pop up the "Batch Add" dialog box, and set the following parameters:
    • Start Value: The start value of the Batch Add pixel value.
    • End Value: The end value of the Batch Add pixel value.
    • Step: The specific pixel value of Batch Add starts from the "start value" and increases by "step" until the "end value".
    • Number of stages: how many stages to add. Step size is obtained by ' ( "End value"- "Start value")/number of stages'.
      • Only one of the

      step size and the number of stages can be set, and they cannot be available at the same time.

    • Auto calculate the end value: This parameter needs to be used with the step size. Auto calculate the end value according to the set step. In some cases, the set end value is not suitable, so that the result of (end value-start value)/step size calculation is not an integer, and the end value needs to be corrected. For example, if the start setting is 150, the end value is 1002, the step size is 100, and the end value is automatically calculated, the end value displayed in the color table is 950, not 100 2.
  • Click Insert to pop up a Default color palettes. The selected color will be added to the front of the selected record in the color list box.
  • Click the Select All button to select all records in the list box.
  • Click the Invert Selection button to reversely select the records in the list box, that is, the records that were not selected originally become selected, and the records that were selected originally become unselected.
  • Click the Delete button to delete the selected record in the list box.
  • Click the drop-down arrow to the right of the Color Scheme "button. Choose Color Table Color Scheme to use. Note: When 2 or more records in the list are selected, only the Color Scheme of the selected records will be modified.
  • Click the Restore button to set the current Color Scheme to Restore. Note: When 2 or more records in the list are selected, only the Color Scheme of the selected records will be reset to Restore.
  • Click the "Reverse" button to adjust the Color Scheme in the reverse order, that is, arrange the color positions in the Color Scheme in the reverse order to form a new color table. Note: When 2 or more records in the list are selected, only the Color Scheme of the selected records will be processed in reverse order.
  • Click the Import Color Table "button to import an external color table into the current list box. See the Import Export Color Table page for information on how to Import Color Table.
  • Click the Export Color Table "button to export the current color table. See the Import Export Color Table page for information on how to Import Color Table.