[Scilab-users] ?==?utf-8?q? Put an image as the background of an axis

[Antoine Monmayrant]

Le Mardi 9 Février 2016 22:54 CET, Jan Åge Langeland <j-lan at online.no> a écrit: 
 
> 
> 
> On 09.02.2016 20:27, Samuel Gougeon wrote:
> >
> > You may use the z coordinate of your flat curves to manage overlays, 
> > as in:
> > clf
> > x  =  linspace(0,20,200);
> > plot(x,sin(x))
> > e  =  gce();
> > c  =  e.children;
> > // Example with a local image. The image is from 
> > https://atoms.scilab.org/atoms.png
> > //xstring(0,-1,"$\scalebox{1}{\includegraphics{atoms.png}}$")
> > // Example with a remote image under http:// (http*s*: not accepted)
> > xstring(0,-1,"$\scalebox{1}{\includegraphics{http://www.cnrs.fr/fr/z-tools/newune/themes/CNRSTheme/images/logocnrs.png}}$")
> > c.data(:,3)  =  0.1;  // <<<==== HERE
> > c.thickness  =  2;You may then tune the scalebox factor. Actually, like with an 
> > uicontrol(style="image"), the imported image is inlaid and is not 
> > resized accordingly with the embedding graphical figure. HTH Samuel 
> > Gougeon
> Samuel
> 
> Thank you  for sharing these very good methods. It opens a lot of new 
> possibilities.
> 
> The way I want to use images in figure I  find it better to modify your 
> script with newaxis() before plotting. This makes the picture stay  
> while zooming for instance:
> 
> clf
> xstring(0,0,"$\scalebox{.3}{\includegraphics{http://photos.marinetraffic.com/ais/showphoto.aspx?photoid=445734}}$"); 
> g=get("current_figure"); g.figure_size=[345,575]; b=newaxes(); b.filled 
> = "off"; x  =  linspace(0,20,200);
> plot(x,sin(x))
> 
> By the way it would have been interesting to see an example with 
> uicontrol(style="image")  that you mention. I could never get that right.

Here we go:


//Image inside a figure with exactly the right size
f = gcf();
imageWidth = 181;
imageHeight = 144;
f.axes_size=[imageWidth,imageHeight];

//here image parent can be set to something else than the figure f (like a frame, ...)
h = uicontrol("Parent", f, ..
"Style", "image", ..
"Position", [0 0 imageWidth imageHeight], ..
"String", SCI + "/modules/demo_tools/images/logo_scilab.png");




> 
> Brgds
> Jan Å
> 
>