Plotting Unequally Distributed Data

Hi all,

I'm pretty sure this is easy, but I'm still absolute bollocks at Matlab. I have an 8x3 matrix M, containing the data that I want to make a surface plot of. I know that the 8 rows correspond to the values of 0,10,15,25,35,50,70,and 100. How do I get the xaxis to increase monotonically from 0-100 while still putting my data points at the correct point on it?

Thanks a lot, -Dave

Answer 1

[Walter Roberson]

xcoord = [0,10,15,25,35,50,70,100];
ycoord = 1:3;
surf(xcoord, ycoord, M)

[David]

Thanks a lot!

Answer 2

[Image Analyst]

And what direction is the x-axis? The vertical (rows) direction? Or the horizontal (columns) direction?

And what is the other axis (the column direction) doing? Does it just go from 1 to 3?

What do you want to happen in between the points, for example for a row value of 80? Do you want to interpolate with TriScatteredInterp() and plot with surf() or surface()? Or do you want "flat" panels in between the known data point locations?