Use SURFER software with different interpolation method for the Z values.

Thank you Raoof Mostafazadeh for your answer.

Dear Ajith Krishnan

For creating a surface, you need only three variables. Here you have four variables including x, y, z, and q. You must consider the value for one of x, y, and z constant. I suggest Origin software to draw surfaces containing three parameters x, y, and q in different values of z.

Best Regards.

@Mojtaba bezaatpour

You are right. Thanks for the correction!

I supposed the Q instead of Z.

Raoof Mostafazadeh

Thank you, Sir.

Dear Ajith Krishnan

Since you are try to plot the heat around the tube surface, you still need the Z dimension. Otherwise you will plot a plain surface for your results.

So that, I think its prefer to use matlap with plot point command for each point, but control the point color based on your Q data range.

In this case you will get the actual tube geometry colored with Q colors.

Regards.

Alaa Temimy Thank you for your suggetion.