HoloViews Cheat Sheet

The idea of a HoloViews cheat sheet has cropped up on a number of occasions but we haven’t raised it as an official issues. I think it’s a great idea, which could be leveraged in two forms 1) the actual condensed cheat sheet 2) a more plotting centric user guide. To start with I’d like brainstorm sections and specific items such a cheat sheet might include, that might look something like this:

Operating on the data

• sorting
• selecting
• aggregate

Plotting

• Labeling axes (Dimension labels)
• Setting axis ranges (.redim.range, and soon range padding)
• Mapping visual attributes (Cycle, cmap, *_index, and soon ops)
• …

[jbednar]

Not that I’ve seen, but I’d sure be happy to see one! I’d rather see one first for hvPlot, then for HoloViews…

[ea42gh]

Re Plotting, for now in no particular order (mostly copied from headers in github.com/ea42gh/HoloviewsPlayground/CurvesAndPaths.ipynb)

• datasources (e.g., dataframe, numpy array, xarray, sqlite, dask…)
  • Data arguments for Element constructors
• Figure Size And Layout
  • ways to organize figures: cols(), grid…, HoloMaps/DynamicMaps, Tabs
• Combining elements into figures
• Colors and Color Cycles, muted_alpha
• Labels, Legends and Titles (including adding an HTML div)
• Axes
  • Ticks (number of ticks, lists, Tick label formating)
  • controling axes * hv.Dimensions to control axis labels, to control axis independence * for multiple plots axiswise * for multiple displays framewise
  • Twin Axes
• ColorMapping Elements * images with contours and colorbar
• operations (e.g., datashader)
• Hover, custom hover, hover+datashader
• Dynamic Plots
  • holomaps, dynamicmaps
  • scrubber
  • widgets
  • streams
  • buffers, pipes, …
• Extending plot types
  • functions that return plots that work for both bokeh and matplotlib (use group labels to allow caller to modify options)
  • operations
  • adding a new Element class

I’ll come back and add as I get time… Any ideas on how to organize this so it’s useful? Is there an easy way to share some notebooks?