File: errbar.man

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.TH errbar 2 "April 1993" "Scilab Group" "Scilab Function" 
.so ../sci.an
.SH NAME 
errbar - add error tic on a graphic
.SH CALLING SEQUENCE
.nf
errbar(x,y,em,ep)
.fi
.SH PARAMETERS
.TP 15
x,y,em,ep 
: four matrices of the same size.
.SH DESCRIPTION
Used to add vertical error bars on a 2D plot. 
\fVx\fR and \fVy\fR have the same meaning as in \fVplot2d\fR;
\fVem(i,j)\fR and \fVep(i,j)\fR stands for the error interval on the value y(i,j)
.LP
\fV[y(i,j)-em(i,j),y(i,j)+ep(i,j)]\fR 

Enter the command \fVerrbar()\fR to see a demo.
.SH EXAMPLE
.nf
x=0:0.1:2*%pi;
y=[sin(x);cos(x)]';x=[x;x]';plot2d(x,y);
errbar(x,y,0.05*ones(x),0.03*ones(x));
.fi
.SH AUTHOR
J.Ph.C..