how to resolve error in plotting polar plot in scilab

Question

operation -: Warning adding a matrix with the empty matrix will give an empty matrix result. at line 1 of executed string at line 176 of function polarplot ( C:\PROGRA~1\SCILAB~1.2\modules\graphics\macros\polarplot.sci line 189 ) at line 6 of executed file C:\Users\LAPTOP\polar2.sce

plot2d: Wrong values (Nan or Inf) for input argument: 4 finite values expected

clc
close
clf
s=0:.1:2*%pi*4;
h=1./(s+3*s^2+2*s^3)
polarplot(s,h);

Answer 1

The first value h(1) is infinite, you can avoid it like this (insert a %nan):

clc
close
clf
s=0:.1:2*%pi*4;
h=1./(s+3*s^2+2*s^3)
h(1)=%nan;
polarplot(s,h);