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xarrows(2) Scilab Function xarrows(2)
NAME
xarrows - draw a set of arrows
CALLING SEQUENCE
[]=xarrows(nx,ny,[arsize,style])
PARAMETERS
nx : real matrix of size (n1,n2)
ny : real matrix of size (n1,n2)
arsize
: real scalar (size of the arrow head). The default value can be
obtained by setting arsize to value -1.0.
style
: a matrix of size n or a scalar. If style is a positive scalar it
gives the dash style to use for all arrows, if it is a negative scalar
then current dash style is used, if it is a vector style[i] gives the
style to use for arrow i.
DESCRIPTION
This function draws a set of arrows which are given by the vector or
matrices nx and ny. The ith arrow is defined by (nx(i),ny(i))--
>(nx(i+1),ny(i+1)). nx, ny can also be matrices :
nx=[ xi_1,x1_2,...; xf_1,xf_2,...]
ny=[ yi_1,y1_2,...; yf_1,yf_2,...]
in which case the arrows are (xi_k,yi_k)->(xf_k,yf_k)
This function uses the current graphic scale which can be set by calling a
high level drawing function such as plot2d.
EXAMPLE
x=2*%pi*(0:9)/8;
x1=[sin(x);9*sin(x)];
y1=[cos(x);9*cos(x)];
plot2d([-10,10],[-10,10],[-1,-1],"022");
xset('clipgrf')
xarrows(x1,y1,1,1:10);
xset('clipoff')
SEE ALSO
plot2d, xchange
AUTHOR
J.Ph.C..
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