`sample_size` works very similar to `numpy.linspace`. In `numpy.linspace`, you define start and end positions with the number or samples to generate between them. This property automatically sets the `delta` property, so after setting `sample_size`, there is no need to play with `delta`.
3.6.6
* Bug fixes and compatibility updates * Added new tests
3.6.5
* Added Object File Format (OFF) export support to `exchange` module
3.6.4
* Code reorganization * Bug fixes
3.6.3
* Updated NURBS module to have an extensible variable cache * Minor bug fixes
3.6.2
* Fixed a bug in Multi module `render` method which fails to work after `VisMPL` update. * Fixed a bug in `frange` function which sometimes fails to generate correct output with bigger delta values