MATLAB Filter command for contour plot MATLAB

Hi all,

I have made a BSFC plot in MATLAB with engine data tested on an eddie current dyno, The code I used for it is:

>> NP=40;
>> [RP TP]=meshgrid(linspace(min(RPM),max(RPM),NP),linspace(min(Torque),max(Torqu e),NP));
>> BSFC_IT=griddata(RPM,Torque,BSFC,RP,TP);
>> NC=12;
>> Fig1=figure;
>> [CT HT]=contourf(RP,TP,BSFC_IT,round(logspace(log10(210),log10(400),NC)));
>> colorbar;
>> %clabel(CT,HT);
>> xlabel('Engine Speed (rpm)')
>> ylabel('Torque (Nm)')
>> title('Contours of BSFC (g/kWh)')

With all my data this gave me a contour plot that looks like the image I have attached and this is after fiddling with all of the data to make it look 'pretty'.

I know you can use the filter function to smooth out plots, so my question is, how can I use the filter function to smooth out the curves with the complex code I have?

Any help is much appreciated.




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