[QGIS-Developer] What are best graph possibilities in QGIS

[Werner Macho]

Hi Richard,

You forgot about PyQtGraph used in MuTAnT tool ;)

But anyway - I myself am searching for a nice python graph library with
nice options and a nice style..
matplotlib is the most feature rich but unfortunately very slow (unless I
might probably use the code wrong)

I am following a lot of lib development closely and some time ago (about 3
years) some graphlib programmers decided to work together on one good lib

vispy (https://github.com/vispy/vispy)

But to me it seems that stopped again and everyone is again doing his own
lib (might only look to me as this - I dont know).
vispy would be the way to go for me - but it seems it is not prime time
ready yet. (and I might be wrong but I am still missing datetime
functionality)

So for MuTAnT it's still undecided (shame that PyQwt deceased for Qt5 - it
was by far the fastest).

For now I'd recommend PyQtGraph to use. (fast, good looking and feature
rich - though still also no timedate)
If you need everything there is still no way around matplotlib - maybe they
changed something in terms of speed with the now available version 2.. not
tested yet..

regards
Werner



On Tue, May 9, 2017 at 10:29 AM, Luigi Pirelli <luipir at gmail.com> wrote:

> from your land (but UE financed) you can also explore this python lib
> to prepare graphs (depepnding on dataset size)
>
> http://vaex.astro.rug.nl/
> Luigi Pirelli
>
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>
> On 8 May 2017 at 16:47, Richard Duivenvoorde <rdmailings at duif.net> wrote:
> >
> > Hi,
> >
> > wanting to create a nice looking graph (widget) in QGIS, I wonder what
> > the options are, and if there is some common consensus on what is the
> > best option for the near future:
> >
> > I know of (seen used in Mutant plugin):
> > - qwt
> > - mathplot lib
> > But these look a little crude...
> >
> > Another option would be to create the graph(s) via javascript using some
> > kind of javascript lib and show the image or html in a web widget.
> > Or maybe even a create custom dedicated d3js widget?
> >
> > Do 'we' (as the community) have a stand in this?
> > Is one option more future proof (for QGIS) then others?
> >
> > Regards and thanks for any input,
> >
> > Richard Duivenvoorde
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