I just found a way to obtain the background color that I want.
I just have to use these commands before any drawing: "plscolbg 255 255
255;" and then "plclear ();".
I don't know if it is the canonical way to do it but anyway, it is
working...
Thanks in advance for your time.
Regards.
Johan Mazel
2010/9/16 Johan Mazel <[email protected]>
> Hi
> I am trying to change the color of the background through the use of
> plscolbg.
> I am using PLplot with Cairo and GTK, the whole program being coded in
> Ocaml and thus using Ocaml bindings.
>
> I use the code from this example:
> http://plplot.svn.sourceforge.net/viewvc/plplot/trunk/examples/ocaml/xgtk_interface.ml?view=markup.<http://plplot.svn.sourceforge.net/viewvc/plplot/trunk/examples/ocaml/xgtk_interface.ml?view=markup>
> I juste want to change the background color from black, as in default, to
> white.
>
> In order to do this, I use the following line: "plscolbg 255 255 255;".
> As it is indicated on this page (
> http://techlogbook.wordpress.com/2009/12/11/changing-background-and-front-color-in-plplot-library/),
> I added this command just before the line: "let plcairo = plinit_cairo
> ~clear: true (plot_width, plot_height) plimagecairo in"
> My guess being that plinit_cairo was actually calling plinit and thus I
> needed to change the background before.
> However, the background color does not change.
> Does anyone have a idea of the cause of this problem ?
>
> Thanks in advance for your time.
>
> Regards.
> Johan Mazel
>
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