Basic usage

Calculating textures

All available textures are located in the textures submodule and except for the windowed basic statistics window_statistic(), have the same parameters.

First we import necessary packages and create some dummy data:

import textory as tx
import numpy as np

n = 50
data1 = np.random.rand(n*n).reshape(n,n)
data2 = np.random.rand(n*n).reshape(n,n)

Then we can calculate, for example the variogram, with:

tx.textures.variogram(x=data1, lag=2, win_size=7)

Here the parameter win_geom is ommitted and therefore defaults to “square”. The lag and win_size parameters can also be omitted in which case they default to 1 and 5 respectively.

Textures based on two images like pseudo_cross_variogram() have an additional parameter y:

tx.textures.pseudo_cross_variogram(x=data1, y=data2)

With the window_statistic() function basic statistical measures like min, max median, etc. can be calculated for a moving window. To get accurate results the nan version of the numpy functions should be used. Currently this function only supports square windows.

tx.textures.window_statistic(x=data1, stat="nanmax")