How to make a 3D plot where z data corresponds to different y axes?

Hello, I am running into trouble when trying to make a 3D plot because I don't have one consistent y axis. I have some x values, and for each x I have some y values (but those ys are not always the same for different x values) and then each (x,y) has a z value.

So x is a vector with, say, 10 elements. y is a matrix with, say, 8x10 elements. And z is a matrix also with 8x10 elements.

But all 3D plots I've tried only accept y as a vector, not a matrix.

I've tried making y a single vector containing all the different y values, and then in z substituting NaN where there is no data for that x,y. But this runs into the problem that the plots don't simply ignore the NaNs and move onto the next point, they break the surface up. Attached are the x,y and z I used to try this if you want to recreate my problem. Just do surf(x,y,z).

Doing something like surf(x,y,z(~isnan(z))) doesn't work because then the length of z doesn't match with y.

So is there some way to accomplish this? Maybe some value instead of NaN that plots actually will just ignore?

Regards, Christy

[James Tursa]

I don't understand how you are forming the (x,y,z) triplets with your example txt data.

[Christy Simpson]

I'm not quite sure what you mean. y holds every y value that was used. z's column index corresponds to the x values, the row index corresponds to the y values, and at every (x,y) there is a datum or NaN. Does that help?

[James Tursa]

When I open the files, there are 11 x values, 20 y values, and 11 z values. So x matches z in size. But I still have no understanding how you are forming your (x,y,z) triplets from these values. When you write "... at every (x,y) ..." I don't understand how you are forming the (x,y) pairs from the 11 element x vector and the 20 element y vector.

[Christy Simpson]

Oh I'm sorry, I didn't save z properly. I've attached the correct one.