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5.7 Matrix

This menu groups operations which operate on matricies. nip2 has four ways of displaying a matrix, but they all behave in the same way under the skin. Almost all the items in the Math menu will work on matricies.

New
The first four items make matricies which display and edit in various ways useful for different applications. The final two make matricies which are pre-filled with useful numbers.

Extract
This group of items add and remove rows and columns, and rotates and flips. A 45 degree rotate will only work for square matricies with odd-length sides.

Invert
Simple matrix-only maths operations.

Matrix to Image
Convert between images and matricies. This will only work for small images: it is very inefficient to represent an image as a matrix.

Plot Scatter
This takes a two-column matrix where the columns are the X and Y positions of points and draws a scatter graph.


next up previous contents
Next: 5.8 Tasks Up: 5. Image processing menus Previous: 5.6 Math   Contents
John Cupitt 2004-12-20