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Re: [matplotlib-devel] Incorporating TikZ into Matplotlib
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From: Neil G. <mis...@gm...> - 2015-05-13 20:52:04
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Yes, I just noticed that as well. That's how the tikz pgf code looks (a sequence of line_to and curve_to commands and so on) so it should be easy to port over the various shapes. On Wed, May 13, 2015 at 4:49 PM, Eric Firing <ef...@ha...> wrote: > On 2015/05/13 10:12 AM, Neil Girdhar wrote: > >> If you want to make arrowheads look at all decent, they really need to >> be enclosed in Bezier curves. See the diagram here: >> > > Mpl paths support Bezier curves. > http://matplotlib.org/api/path_api.html?highlight=bezier > > >> >> http://tex.stackexchange.com/questions/150289/how-do-you-accomplish-stealth-with-the-new-arrows-meta/230965#230965 >> >> The first two look like garbage. The last one is the only one that >> looks good imho. >> > > That depends on the application, and the observer. Sure, but I may as well port them all of the tikz arrowheads over since most of the work would be figuring out how to do it. > > > Eric > > >> Best, >> >> Neil >> >> On Wed, May 13, 2015 at 4:09 PM, Eric Firing <ef...@ha... >> <mailto:ef...@ha...>> wrote: >> >> On 2015/05/13 9:36 AM, Neil Girdhar wrote: >> >> I don't know matplotlib well enough (yet) to know what the >> change would >> consist of. >> >> I suggest you take a look at the beautiful tikz manual: >> http://pgf.sourceforge.net/pgf_CVS.pdf >> >> >> Very helpful, thank you. >> >> >> The arrows.meta on page 201–212 are really well-designed and >> beautiful. >> >> Compare this with matplotlib's custom arrows: >> >> http://stackoverflow.com/questions/16968007/custom-arrow-style-for-matplotlib-pyplot-annotate >> >> How do I make tikz's arrowheads available for all backends? >> >> >> My guess offhand is that this is a matter of using the mpl API. I >> don't think we would want to add all of these types and options to >> the mpl core; but a toolkit might be ideal for this. The mpl API, >> which generates the same results for all backends, is quite complete >> and flexible. Things like arrowheads are Patch objects, and you can >> specify any path you want. The main trick is figuring out how to >> handle transforms--what kind of coordinates should the path be >> specifying? How should things scale as a figure is reshaped and >> resized? >> >> For many of these types you could also use mpl Line2D objects, for >> which several properties including cap style can be specified. Not >> all of the TikZ options would be available, but perhaps enough. >> >> Eric >> >> >> > |
