# Range Window and Down-Sampling

The Range Window and Down-Sampling widget allows to reduce the displayed image by selecting its x and y slices in python notation.

Moreover, the user can reduce the image by applying down-sampling with a specific factor and a reduction function.

- Slices: x,y numpy-like slices
- DS Factor: down-sampling factor, i.e. 5 means: a 5x5 pixel block is reduced to 1 pixel.
- DS Reduction: down-sampling reduction function, i.e. `max`,`min`, `mean` or `sum` .