Simple maths

Widgets -> Processing -> Simple Maths

This widget is a simplified version of the console and allows new data to be created from simple operations on existing data.

The text entered must be a valid Python expression and can include the names of existing ROIs and overlays which will be Numpy arrays. Numpy functions can be accessed using the np namespace.


Add Gaussian noise to some data

newdata = mydata + np.random.normal(0, 100)

Calculate the difference between two data sets

newdata = mydata1 - mydata2

Scale data to range 0-1

newdata = (mydata - mydata.min()) / (mydata.max() - mydata.min())