---
name: "topic_transformation"
section: "1grass"
platform: "linux"
package: "grass-doc"
version: "8.4.1-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/topic_transformation"
---

# topic\_transformation(1grass)

## Topic: transformation

| | | |
| --- | --- | --- |
| i.fft |  | Fast Fourier Transform (FFT) for image processing. |
| i.ifft |  | Inverse Fast Fourier Transform (IFFT) for image processing. |
| i.pca |  | Principal components analysis (PCA) for image processing. |
| i.tasscap |  | Performs Tasseled Cap (Kauth Thomas) transformation. |
| m.transform |  | Computes a coordinate transformation based on the control points. |
| v.transform |  | Performs an affine transformation (shift, scale and rotate) on vector map. |

*See also the corresponding keyword transformation for additional references.*

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