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.TH Matplot1 2 "April 1993" "Scilab Group" "Scilab Function"
.so ../sci.an
.SH NAME
Matplot1 - 2D plot of a matrix using colors
.SH CALLING SEQUENCE
.nf
Matplot1(a,rect)
.fi
.SH PARAMETERS
.TP 3
a
: real matrix of size (n1,n2).
.TP
rect
: \fV[xmin;ymin,xmax,ymax]\fR
.SH DESCRIPTION
The entries of matrix \fVint(a)\fR are used as colormap entries in
the current colormap. \fVrect\fR specify a rectangle in the
current scale and the matrix is drawn inside this rectangle.
Each matrix entry will be rendered as a small rectangle filled with its
associated color.
.SH EXAMPLE
.nf
//--- first example
// fix current scale
xsetech(frect=[0,0,10,10])
xrect(0,10,10,10)
a=5*ones(11,11); a(2:10,2:10)=4; a(5:7,5:7)=2;
// first matrix in rectangle [1,1,3,3]
Matplot1(a,[1,1,3,3])
a=ones(10,10); a= 3*tril(a)+ 2*a;
// second matrix in rectangle [5,6,7,8]
Matplot1(a,[5,6,7,8])
xset('default')
xbasc()
//--- second example
xsetech(frect=[0,0,10,10])
xrect(0,10,10,10)
n=100;
xset('pixmap',1)
driver('X11');
for k=-n:n,
a=ones(n,n);
a= 3*tril(a,k)+ 2*a;
a= a + a';
k1= 3*(k+100)/200;
Matplot1(a,[k1,2,k1+7,9])
xset('wshow')
xset('wwpc')
end
xset('pixmap',0)
xset('default')
xbasc()
.fi
.SH SEE ALSO
colormap, plot2d, Matplot
.SH AUTHOR
J.Ph.C.
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