[QGIS-Developer] RES: Best Qgis python plot library

[jorgealmerio at yahoo.com.br]

Hi Benjamin,

 

You are totally right, I want to update my plot fast and maybe react on mouse clicks.

 

I will follow you recomendation to use PyQtGraph.

 

Thank you very much to your answer and the links. It will help me a lot!

 

Best regards,

 

Jorge Almerio

 

De: Benjamin Jakimow [mailto:benjamin.jakimow at geo.hu-berlin.de] 
Enviada em: sexta-feira, 11 de junho de 2021 18:39
Para: jorgealmerio at yahoo.com.br
Cc: qgis-developer at lists.osgeo.org
Assunto: Re: [QGIS-Developer] Best Qgis python plot library

 

Hi Jorge,

to my experience PyQtGraph might fit your needs best.
It is fast, it's easy to realize interactions between GUI and Backend (in both directions!) and it uses many
concepts that are commin in the Qt/PyQt world. You can easily deliver it as subpackage of your own project (~2.5 MB, MIT/X11 license) [1] 

I recently started to use plotly too, but not for GUI programming. Nice to use as well, better default styles and much better documented than PyQtGraph. 
Otherwise it's probably harder to be used in a GUI and to realize GUI <-> Backend interactions, e.g. if you want to update your plot fast or react on mouse clicks (please correct me if I'm wrong).

I'd love to see QtCharts [3] as part of QGIS distributions, as it is probably closest to common Qt paradigms like Model/View programming.

Greetings,

Benjamin

[1] https://pyqtgraph.readthedocs.io/en/latest/how_to_use.html#embedding-pyqtgraph-as-a-sub-package-of-a-larger-project

[2] https://doc.qt.io/qt-5/qtcharts-overview.html

[3] https://doc.qt.io/qt-5/qtcharts-overview.html

On 2021-06-10 22:49, jorgealmerio at yahoo.com.br <mailto:jorgealmerio at yahoo.com.br>  wrote:

Hi all,

 

I want to create o plot chart as a widget in my plugin. I already used MatPlotLib in the past, but I don't know it is the best choice.

 

I know some plugins use PyQtGraph and others PyQwt (I think it was deceased for Qt5)

 

Some features I consider relevant:

 

1) Works native in Qgis enviroment, no need to install anything.

2) Fast

3) Easy to code

4) Will not be discontinued in the near future

 

What is the library best option? 

 

Thanks in advance

 

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Benjamin Jakimow, Doctoral Researcher
Earth Observation Lab | Geography Department | Humboldt-Universität zu Berlin

e-mail: benjamin.jakimow at geo.hu-berlin.de <mailto:benjamin.jakimow at geo.hu-berlin.de> 

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