Scilab Function

xsetech - set the sub-window of a graphics window for plotting

### Calling Sequence

  `xsetech(wrect,[frect,logflag])`
  `xsetech(wrect=[...],frect=[..],logflag="..", arect=[...])`
  `xsetech()`

### Parameters

- `wrect` : vector of size 4, defining the sub-window to use.
- `frect` : vector of size 4.
- `logflag` : string of size 2 "xy", where x and y can be "n" or "l". "n" stands for normal and "l" stands for logscale. x stands for the x-axis and y stands for the y-axis.
- `arect` : vector of size 4.

### Description

`xsetech` is mainly used to set the sub-window of the graphics window which will be used for plotting. The sub-window is specified with the parameter `wrect=[x,y,w,h]` (upper-left point, width, height). The values in `wrect` are specified using proportion of the width or height of the current graphic window. For instance `wrect=[0,0,1,1]` means that the whole graphics window will be used, and `wrect=[0.5,0,0.5,1]` means that the graphics region will be the right half of the graphics window.

`xsetech` also set the current graphics scales for 2D plotting and can be used in conjunction with graphics routines which request the current graphics scale (for instance `strf="x0z"` or`frameflag=0` in `plot2d`).

`frect=[xmin,ymin,xmax,ymax]` is used to set the graphics scale and is just like the `rect` argument of `plot2d`. If `frect` is not given the current value of the graphic scale remains unchanged. the default value of `rect` is `[0,0,1,1]` (at window creation, when switching back to default value with `xset('default')` or when clearing graphic recorded events `xbasc()`).

`arect=[x_left, x_right,y_up,y_down]` is used to set the graphic frame inside the subwindow. The graphic frame is specified (like `wrect`) using proportion of the width or height of the current graphic subwindow. Default value is `1/8*[1,1,1,1]`. If `arect` is not given, current value remains unchanged.

### Examples

    // To get a graphical explanation of xsetech parameters enter:
    exec('SCI/demos/graphics/xsetechfig.sce');

    // Here xsetech is used to split the graphics window in two parts
    // first xsetech is used to set the first sub-window
    // and the graphics scale
    xsetech([0,0,1.0,0.5],[-5,-3,5,3])
    // we call plot2d with the "001" option to use the graphics scale
    // set by xsetech
    plot2d([1:10]',[1:10]',1,"001"," ")
    // then xsetech is used to set the second sub-window
    xsetech([0,0.5,1.0,0.5])
    // the graphics scale is set by xsetech to [0,0,1,1] by default
    // and we change it with the use of the rect argument in plot2d
    plot2d([1:10]',[1:10]',1,"011"," ",[-6,-6,6,6])
    // Four plots on a single graphics window
    xbasc()
    xset("font",2,0)
    xsetech([0,0,0.5,0.5]); plot3d()
    xsetech([0.5,0,0.5,0.5]); plot2d()
    xsetech([0.5,0.5,0.5,0.5]); grayplot()
    xsetech([0,0.5,0.5,0.5]); histplot()
    // back to default values for the sub-window
    xsetech([0,0,1,1])
    // One plot with changed arect
    xbasc()
    xset("default")
    xsetech(arect=[0,0,0,0])
    x=1:0.1:10;plot2d(x',sin(x)')
    xbasc()
    xsetech(arect=[1/8,1/8,1/16,1/4])
    x=1:0.1:10;plot2d(x',sin(x)')
    xbasc()
    xset("default")

### See Also

`xgetech` `subplot` `isoview` `square`

### Author

J.Ph.C.