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See the recommended documentation of this function
xarrows
draw a set of arrows in 2D or in 3D.
Syntax
xarrows(nx, ny [,nz] [,arsize, color])
Arguments
- nx, ny, nz
real vectors or matrices of same size.
- arsize
a real scalar, size of the arrow head. The default value can be obtained by setting
arsize
to-1
.- color
a matrix or scalar. If
color
is a positive scalar it gives the color to use for all arrows. If it is a negative scalar then the current color is used. If it is a vectorcolor(i)
gives the color to use for arrowi
.
Description
xarrows
draws a set of arrows
given by nx
, ny
and nz
.
If nz
is not given, then the arrows are drawn in 2D.
If nx
, ny
and nz
are vectors,
the i
-th arrow is defined by
(nx(i),ny(i),nz(i))-->(nx(i+1),ny(i+1),nz(i+1))
.
If nx
, ny
and nz
are matrices:
nx=[xi_1 x1_2 ...; xf_1 xf_2 ...] ny=[yi_1 y1_2 ...; yf_1 yf_2 ...] nz=[zi_1 z1_2 ...; zf_1 zf_2 ...]
the k
-th arrow is defined by (xi_k,yi_k,zi_k)-->(xf_k,yf_k,zf_k)
.
xarrows
uses the current graphics
scale which can be set by calling a high level
drawing function such as plot2d
.
Examples
x = 2*%pi*(0:7)/8 x1 = [sin(x); 9*sin(x)]; y1 = [cos(x); 9*cos(x)]; plot2d([-10,10], [-10,10], [-1,-1], "022") gca().clip_state = "clipgrf"; xarrows(x1, y1, -1, [1:7,9]) //8-th color is white gca().clip_state = "off";
![](/docs/6.0.1/en_US/xarrows_1.png)
N = 100; zi = linspace(-1,2,N); zf = zi; theta = (zi - min(zi))/(max(zi)-min(zi))*720; xi = zeros(1,N); xf = cosd(theta); yi = zeros(1,N); yf = sind(theta); clf, plot3d([-1 1 1 1],[-1 -1 -1 1],[-1 -1 2 2]) xarrows([xi;xf],[yi;yf],[zi;zf],0.7, 32*rand(1,N))
![](/docs/6.0.1/en_US/xarrows_2.png)
History
Version | Description |
5.5.0 | Arrows can be drawn in 3D. |
Report an issue | ||
<< xarcs | geometric_shapes | xfarc >> |