samples:samples:transform
Table of Contents
Transform sample
Documentation | Samples | Transform
Summary
Transform sample - Polynomial georeferencing of a raster image.
Description
What the sample shows:
- Polynomial georeferencing of raster images
- Defining ground control points for image registration
- Computing affine and polynomial transformation matrices
- Applying coordinate transformations to raster data
- Validating registration accuracy with RMS errors
- Exporting georeferenced raster images
- Interactive control point placement
- Transformation result visualization
This sample illustrates use of:
| Name | Description |
|---|---|
| TGIS_TransformPolynomial.LoadFromFile | Load transformation definitions from the file. |
| TGIS_TransformPolynomial.Prepare | Prepare transformation based on current set of GCP points. |
| TGIS_TransformGCP.AddPoint | Add Ground Control Point (GCP) will be used by Prepare method to compute transformation matrix. |
| TGIS_Transform.CuttingPolygon | WKT of cutting polygon. |
| TGIS_Transform.Active | True if transformation is active. |
| TGIS_Transform.LoadFromFile | Load transformation definitions from the file. |
| TGIS_Layer.SetCSByEPSG | Sets up Coordinate System to a coordinate system provided by a EPSG code. |
| TGIS_Layer.Transform | Custom transformation. |
Code
This sample is available on the following platforms (click to view the source code on GitHub):
2026/06/08 23:31