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Introduction
This command will reduce the amount of points from one or more input data sets. The selection method can for instance be priority of the Minimum or Maximum the Minimum or Maximum depth values. The selection area can be by looking at points inside a Rectangle or a Rectangle or Circle. The selected points are always with the original position and not snapped into any grid structure.
The output will be a new point data set which in Geocap will have a schema of type type Pointcloud.
The command is a folder command and is implemented for folders with schema types types Charts, Multibeam, Soundings and Generic. Soundings and Generic.
Selection of shallowest point within 250 m radii.
The Statistical Points Reduction dialogs
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The upper part of the menu contains the project name and the name of the active folder.
The Selection Area part
Set parameters for the geometry of the area to select points within.
- Rectangle: Divide the area into cells and analyse the points which ara inside the cell. Normally the cell size will be a square.
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- Circle: First collect all points into cells with half the size as the circle radius. Then sort on increasing or decreasing values and then start removing points within the given radius.
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After executing the statistical point reduction a dialog will pop up showing the result from the selection. The report is saved in the project structure in the folder named Reports located in the same folder as the command. The report itself is named as YYYYMMDD Statistical Point Reduction (the name of the executed command).
All reports from all runs will be saved in the Reports folder.
The resulting points file will be a combination of the inut file name, the selection area and selection parameters.
For the Rectangle method the file name will be: 'filename'_'selectionType'_'width'_'height'_'minimumPoints'.
For the Circle method the file name will be: 'filename'_'selectionType'_Radius_'radius'.