Computes statistics on a training polygon set.
The application processes a set of geometries intended for training (they should have a field giving the
associated class). The geometries are analysed against a support image to compute statistics :
- number of samples per class
- number of samples per geometry
An optional raster mask can be used to discard samples. Different types of geometry are supported :
polygons, lines, points. The behaviour is different for each type of geometry :
- polygon: select pixels whose center is inside the polygon
- lines : select pixels intersecting the line
- points : select closest pixel to the point
This section describes in details the parameters available for this application. Table 4.126, page 723 presents a summary of these parameters and the parameters keys to be used in command-line and programming languages. Application key is PolygonClassStatistics.
Parameter key | Parameter type |
Parameter description |
in | Input image |
InputImage |
mask | Input image |
InputMask |
vec | Input File name |
Input vectors |
out | Output File name |
Output Statistics |
field | String |
Field Name |
layer | Int |
Layer Index |
ram | Int |
Available RAM (Mb) |
inxml | XML input parameters file |
Load otb application from xml file |
outxml | XML output parameters file |
Save otb application to xml file |
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To run this example in command-line, use the following:
To run this example from Python, use the following code snippet:
None
This application has been written by OTB-Team.