[scilab-Users] figures + handles

[Antoine Monmayrant]

Le 23/08/2010 12:28, Carrico, Paul a écrit :
> Dear All
>
> In the following example, how can i :
> - have 2 polylines with 2 differnte color ?
> - add the legends ?
>
> All my attempts failed
>
> Thanks for any help
>
>
> Paul
>
> PS : the following (if it's added) failed
> e.children(1) = 1 // color of the 1rst line
> e.children(2) = 3 // color of the 2nd line
> legends(['TRACTION' 'DROITE'],opt=2)
>
>
>
> ########################################################################
>    drawlater();
>    xgrid(3);
>    f = gcf();
>    f.figure_size = [1000, 1000];
>    f.background = color(245,245,245);
>    a = gca();
>    a.font_size = 2;
>    a.x_label.text = "Epsilon " + string(type_deformation) + " [-]";
>    a.x_label.font_size = 4;
>    a.y_label.text = "Sigma [MPa]";
>    a.Y_label.font_size = 4;
>    if (choix_titre == 1) then
>     a.title.text = ("Resultat TRACTION sur " + string(nom_mat) + " +
> module d''Young");
>     a.title.font_size = 5;
>    end
>    a.line_style = 1;
>
>    plot(TRACTION_FIG(:,3),TRACTION_FIG(:,4),line_style=1)
>    plot(TRACTION_YOUNG(:,1),TRACTION_YOUNG(:,2),line_style=2)
>    e = gce()
>    e
>    p = e.children
>    p.thickness = 2 ;
>    p.line_style = 1;
>    drawnow();
>
>
>
>
>
>
>
>
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>    
You can try the following code to see how to get what you want:

/////////////////////////////////////////////////////////////////////////////////////////////////////
x=[-10:0.1:10];
y1=sin(x);
y2=cos(x);

// this is your code
f = gcf();
   f.figure_size = [1000, 1000];
   f.background = color(245,245,245);
   a = gca();
   a.font_size = 2;
   a.x_label.text = "Epsilon " +"" + " [-]";
   a.x_label.font_size = 4;
   a.y_label.text = "Sigma [MPa]";
   a.Y_label.font_size = 4;

//

plot(x,y1)
e1=gce();    //handle to first polyline
plot(x,y2);
e2=gce();    //handle to second polyline
e1.children.foreground=color("orange");
e2.children.foreground=color("forest green");
legend("This is orange Cos", "This is green Sin");
/////////////////////////////////////////////////////////////////////////////////////////////////////

The key idea is that gce() returns the handle to the current element 
(the last one you plotted in this case).
So unless you want to browse all the children of the "f" handle to finde 
the handle your are looking for, the best is to call gce() after each 
plot to keep an handle for each element you plotted on the graph.

Cheers,

Antoine