The grid vectors are not strictly monotonic increasing.

if true
  % code
endX        Y        T
1.00E-01  0.00E+00  8.74E+02
1.00E-01  2.89E-04  8.74E+02
1.00E-01  5.99E-04  8.72E+02
1.00E-01  9.33E-04  8.73E+02
1.00E-01  1.29E-03  8.73E+02
1.00E-01  1.68E-03  8.74E+02
1.00E-01  2.09E-03  8.76E+02
1.00E-01  2.54E-03  8.76E+02
1.00E-01  3.02E-03  8.78E+02
1.00E-01  3.53E-03  8.80E+02
1.00E-01  4.09E-03  8.82E+02
1.00E-01  4.69E-03  8.84E+02
1.00E-01  5.33E-03  8.87E+02
1.00E-01  6.02E-03  8.91E+02
1.00E-01  6.76E-03  8.94E+02
1.00E-01  7.56E-03  8.97E+02
1.00E-01  8.41E-03  8.99E+02
1.00E-01  9.34E-03  9.00E+02
1.00E-01  1.03E-02  9.00E+02
1.00E-01  1.14E-02  9.00E+02
1.00E-01  1.25E-02  9.00E+02
1.00E-01  1.38E-02  9.00E+02
1.00E-01  1.51E-02  9.00E+02
1.00E-01  1.65E-02  9.00E+02

This is small part of my data file which contains x,y and T. I want to interpolate my current data on these xq and yq.

xq=(0:0.2:100); yq=(0:0.04:20);

When I tried the command: a=interp2(x,y,temp,xq,yq,'cubic');

I got an error of non-monotonic function. Can you guys please help me, how to resolve it? Thanks in advance. Regard