[Gambas-user] Charts in Gambas: alternatives to "Chart"

[Fabien Bodard]

Well, so after reading and reading again about gnuplot, and MathGL (that is
a good lib too), i've made my own opinion. What we need is nor the beauty
of a spreadsheet tool, nor the power of a scientist renderer. I think there
is a place for a simple tool in gambas that allow to draw basic 1D, 2D
graph. This tool will never have the power of a gnuPlot Tool on rendering
3D Matrix Array. But it can have more style options for a better render on
apps and reports.

Then I imagin a dynamic tool that allow user interraction too... why not
allow a user to modify the data directly from the chart widget ?... Why not
allow the chart to query the data on real time ? (via an event )

the chart renderer will have two level a drawing class and a viewer... Like
gb.map.

So it can be used then in report, or every where it can be drawed every
where.

The first gb.chart was my first component ... and yes i have to rewritte
all, but with my new skills i hope to provide you a better tool.


2013/10/15 richard terry <rterry at ...1823...>

> As I've previously mentioned we use gnuPlot with great success, shell
> out the data and get back the path to the png image generated to display
> where you want.
>
> regards
>
> richard
>
> On 14/10/13 17:30, Randall Morgan wrote:
> > NO, I allow python to open the chart window so it floats above the Gambas
> > application. Same with Octave.
> >
> >
> > On Sun, Oct 13, 2013 at 11:21 PM, Alberto Caballero <
> alberto.kavan at ...626...
> >> wrote:
> >> Hi Randall,
> >>
> >> Thanks for your advice. Do you then integrate the Python chart into the
> >> Gambas application? How do you draw it inside a DrawingArea?
> >>
> >> Regards,
> >>
> >> Alberto
> >>
> >>
> >> 2013/10/13 Randall Morgan <rmorgan62 at ...626...>
> >>
> >>> I have been successful in using both Python and Octave for charting.
> >>> Basically, you write out your data into a file and then write a python
> or
> >>> octave script and call it passing your data file. One note, use full
> >> paths
> >>> as Gambas will prefix and relative path with the Gambas application's
> >>> directory.
> >>>
> >>> There was some recent discussion on rebuilding the charting module or
> >>> replacing it with something that would work more like NumPy or MatLab
> >>> charts. I am hoping this will happen soon as I too have a great need
> for
> >>> good charting tools in Gambas.
> >>>
> >>>
> >>> On Sun, Oct 13, 2013 at 2:00 AM, Alberto Caballero
> >>> <alberto.kavan at ...626...>wrote:
> >>>
> >>>> Hi all,
> >>>>
> >>>> I am having many problems for showing several charts within my
> >>> application
> >>>> using Gambas "Chart" object. It seems that there is some shared memory
> >>>> between all Chart objects defined.
> >>>>
> >>>> I was wondering if there is any other alternative for showing lines
> and
> >>> bar
> >>>> charts in Gambas. Any other library or component?
> >>>>
> >>>> Thanks and regards.
> >>>>
> >>>> Alberto
> >>>>
> >>>>
> >>
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-- 
Fabien Bodard