Tutorial for parameter sweep with napari

[ruhmamehek]

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Added tutorial with examples for using dask and magicgui to perform parameter sweep with napari, as suggested in issue #43

I have added three examples for the same:

• Lazy parameter sweep for a 2D periodic function using dask
• Parameter sweep using napari to visualize thresholding of an image using adaptive, Sauvola, and Niblack techniques from the scikit-image library for a range of values of block_size and window_size
• Adding apply_threshold method as a magicgui widget to napari for visualizing the thresholded image for the technique selected from the drop-down menu, and the value of block_size or window_size passed via the slider.

Also added relevant assets to demonstrate all examples to the assets/tutorials folder.

[ruhmamehek]

Hi!

Thank you very much for your suggestions. @BhavyaC16 and I have made the following changes:

• Made the thresholding example lazy, and also modified the code to remove duplication
• Updated the magicgui example
• Provided links to external docs wherever appropriate
• Tried to limit our text in markdown to 80-100 characters per line
• Made the suggested changes in wording
• Updated GIFs demonstrating the examples

Looking forward to your review and suggestions on this. :D

[melissawm]

Hi folks! Can we do another pass here? If this content is ready, I can move it over to napari/napari (unless @ruhmamehek wants to do it 😄 )

[psobolewskiPhD]

Ack, boy did this one fall through the cracks which is a massive shame because this is a pretty awesome tutorial both for napari and dask.delayed! I think if the code examples all still work it's definitely worth porting over to https://github.com/napari/docs

[psobolewskiPhD]

I've made a task issue in napari/docs to revisit this. https://github.com/napari/docs/issues/329 Closing, since this won't be merged here.