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See the recommended documentation of this function

Scilab help >> Graphics > geometric_shapes > xrects

# xrects

draw or fill a set of rectangles

### Calling Sequence

`xrects(rects,[fill])`

### Arguments

rects

matrix of size (4,n).

fill

vector of size n.

### Description

`xrects` draws or fills a set of rectangles. Each column of `rects` describes a rectangle (upper-left point, width, height) in user coordinates: `rects=[x1 y1 w1 h1;x2 y2 w2 h2;...]'`.

`fill(i)` gives the pattern to use for filling or drawing rectangle i:

if `fill(i)<0`, rectangle `i` is drawn using the line style (or color) `-fill(i)`

if `fill(i)>0`, rectangle `i` is filled using the pattern (or color) `fill(i)`

if `fill(i)=0`, rectangle `i` is drawn using the current line style (or color).

WARNING: please note that height is positive downwards.

### Examples

```plot2d([-100,500],[-50,50],[-1,-1],"022")
cols=[-34,-33,-32,-20:5:20,32,33,34];
x=400*(0:14)/14; step=20;
rects=[x;10*ones(x);step*ones(x);30*ones(x)];
xrects(rects,cols)
xnumb(x,15*ones(x),cols)```