fec_properties - description of the fec entities properties

Description

The Fec entity is a leaf of the graphics entities hierarchy. It represents 2D finite elements plots (see fec , Sgrayplot ).

parent: This property contains the handle of the parent. The parent of the fec entity should be of the type "Axes" or "Compound" .

children: This property contains a vector with the children of the handle. However, Fec handles currently do not have any children .

visible: This field contains the visible property value for the entity . It should be "on" or "off" . By default, the plot is visible, the value's property is "on" . If "off" the plot is not drawn on the screen.

data: This is a three column matrix [x,y,f] , where x(i) and y(i) are the coordinates of the i 'th node. f(i) is the value associated to the node i .

triangles: This is a five column matrix [tn,n1,n2,n3,flag] . tn(j) is the triangle number. n1(j) , n2(j) and n3(j) are the index of the nodes which constitute the triangle. ( flag(j) is not used).

z_bounds: This [zmin,zmax] vector gives the z values associated with the first and the last color (of the current colormap). More exactly if the colormap have nc colors and if we note dz = (zmax-zmin)/nc, then the part of the triangulation where zmin + (i-1)dz <= z < zmin + i dz is filled with the color i). By default zmin = min(func) and zmax = max(func). If you want to do an animation with func values that varie in time, take for zmin and zmax the global minimum and maximum or something close.

user_data: This field can be use to store any scilab variable in the fec data structure, and to retreive it.

Examples

   set("figure_style","new"); //create a figure

   x=-10:10; y=-10:10;m =rand(21,21);
   Sgrayplot(x,y,m);
   a=get("current_axes");
   f=a.children.children(1)
   f.data(:,3)=(1:size(f.data,1))';
   a.parent.color_map=hotcolormap(64);

 
  

See Also

set ,   get ,   delete ,   fec ,   Sgrayplot ,   graphics_entities ,  

Author

Djalel ABDEMOUCHE