5.3.0.2 Some Manipulations

Coordinates transforms:

• isoview : isometric scale without window change

  allows an isometric scale in the window of previous plots without changing the window size:

  t=(0:0.1:2*%pi)';
  plot2d(sin(t),cos(t));
  xbasc()
  isoview(-1,1,-1,1);
  plot2d(sin(t),cos(t));
  

• square : isometric scale with resizing the window

  the window is resized according to the parameters of the command.

• scaling : scaling on data
• rotate : rotation

  scaling and rotate executes respectively an affine transform and a geometric rotation of a 2-lines-matrix corresponding to the (x,y) values of a set of points.

• xgetech, xsetech : change of scale inside the graphic window

  The current graphic scale can be fixed by a high level plot command. You may want to get this parameter or to fix it directly : this is the role of xgetech, xsetech . xsetech is a simple way to cut the window in differents parts for different plots :

  t=(0:0.1:2*%pi)';
  xsetech(wrect=[0.,0.,0.6,0.3],frect=[-1,1,-1,1]);
  plot2d(sin(t),cos(t));
  xsetech(wrect=[0.5,0.3,0.4,0.6],frect=[-1,1,-1,1]);
  plot2d(sin(t),cos(t));