Divide By Area

Function Description

Divide the selected polygon objects into a specified number of blocks by area or equally using the divide orientation. Currently supports projected coordinate system and planar coordinate system data, and does not support geographic coordinate system data partitioning. This function can be used for land allocation, achieving precise segmentation with specified area and specified orientation.

The Divide by Area button is only available when there is an editable layer in the current map and one or more objects are selected in that layer.

When the data is in a geographic coordinate system, this button is not available.

Function Entry

  • Edit Data tab -> Object Editing group -> Face editing -> Dimension and segmentation -> Divide by Area

Operation Instructions

  1. Set the layer of polygon objects to be split in the map to an editable state, and select one or more polygon objects.
  2. In the Edit Data tab, in the Face editing drop-down menu, click the Dimension and segmentation group's Divide by Area button to open the Divide by Area dialog box.
  3. In the upper list box of the dialog, the SmID and area (m²) of the selected polygon objects to be split are displayed. You can select one by one to set the divide settings individually, or select multiple or all to set the divide settings uniformly.
  4. Divide Orientation: Set two parameters: azimuth and orientation.

    As shown in the figure below, for a piece of land of 100,000 square meters, split out an object of 30,000 square meters. Set the azimuth to 90°, and select the orientation as South and North respectively. When the orientation is South, the south side of the object is cut; when the orientation is North, the north side of the object is cut. The results are as follows:
    • Azimuth: Set the clockwise angle between the cut line and the north direction.
    • Orientation: Set the cutting direction. If the cutting azimuth is 0 or 180 degrees, the cutting orientation is east and west; if the cutting azimuth is 90 or 270 degrees, the cutting orientation is north and south.
  5. Specify Segmentation Type: Users can choose two segmentation types, including:

    Merge remainder region to adjacent region: When cutting a polygon by area, there may be remaining polygon objects. Check this box, and the program will merge the remaining area that is no more than the specified merge area into the adjacent polygon. Uncheck to not merge. As shown in the figure below:
    Notes:

    Only when the area of the remaining region is less than or equal to the set area can the merge be done, otherwise, it cannot be merged.

    • Divide by Area: Specify the area for each divided part. The object will be divided into multiple blocks according to this area, and the number of blocks determines the division count. The number of cut blocks cannot exceed (area of the object before cutting / cut area).
    • Divide By Part: Divide the object equally according to the specified number of blocks. In this case, the Number of Blocks indicates the final number of objects after cutting.
  6. Click the OK button to execute the divide by area operation.