How to smooth the contour plot?

clc
clear all
close all

filename='testdata.xlsx'

a=xlsread(filename,'Sheet1');

pf = a(3:12,:);
ewd = a(14:23,:);
qwd = a(25:34,:);
pwd = a(36:45,:);
gv  = a(47:56,:);

ewd1=ewd';
qwd1=qwd';
pf1=pf';
pwd1=pwd';
gv1=gv';
[c,h]=contour(ewd1,qwd1,pf1,[0:4:30])

clabel(c,h, 'labelspacing', 200)

Answer 1

[Walter Roberson]

https://www.mathworks.com/matlabcentral/fileexchange/38862-contour-line-smoothing

[Nitin Kumar Jhankal]

Thank you so much👍