Enhanced scripts to generate numpy dependency graph for various pkg

[shaloo]

Brief description of what is fixed or changed

Earlier, we had a script that worked for ehtim pkg dependency graph for NumPy. The same script is now enhanced into generic one that works for any package which is dependent on NumPy. Here is how the new script works:

Use case 1: You already have the package deployed locally - in that case simply run gen-numpy-dep-graph.sh. Note: Pre-requisite - you should have pipdeptree and graphviz installed on your system.

Use case 2: You do not have the package for which you need to generate NumPy dep graph. You can use fetch-numpydeppkg.sh to download pkg sources and deploy locally along with graphviz and pipdeptree. Next, you can run gen-numpy-dep-graph.sh followed by cleanup script which will uninstall and remove all downloaded sources from your local machine and free up space used by these packages.

Use case 3: NumPy use - just one one script which generates updated dep graphs of all pkg that are referred to in NumPy.org case studies. This is done by redraw-numpy-dep-charts.sh and it also serves as an example for Use case 2.

Fixes #217

Deployed URL

http://numpy-<pr_number>.surge.sh/

[rgommers]

Note to self: the current outputs of these are in gh-182.

[rgommers]

Thanks @shaloo! These new graphs will be useful. The script does work for me, with some minor hiccups. It would be useful to add a scripts/README.md to make it easier to figure out what to do.

[shaloo]

Thanks @shaloo! These new graphs will be useful. The script does work for me, with some minor hiccups. It would be useful to add a scripts/README.md to make it easier to figure out what to do.

Hopefully you will have a better experience with the fixes. Pls do let me know if you have any more suggestions and inputs to make it better.

[shaloo]

clicked closed by mistake, reopened.

[shaloo]

I tried to squash last two updates to readme as part of this update. Had to force push after rebase with upstream/master - hope that is ok.

[rgommers]

Had to force push after rebase with upstream/master - hope that is ok.

No worries, force-pushing is always okay. The only rule is never to do that to a branch used by other people (e.g. master in this repo). On your own branches and PRs it's always fine.

[rgommers]

This succeeds out of the box now doing simply ./redraw-numpy-dep-charts.sh. Result:

The PyCBC figure would look cleaner with six removed, but let's not hold up this PR on that - it looks good too as is, we can always work on this more in the future if we want to further improve this.

[rgommers]

Image file sizes here are ~100 kb, which is good.

[rgommers]

Merged, thanks @shaloo!