How to change the scaling back to negative values after applying accumarray function?

I had to impose the accumarray function on two variables, C12 and S12. S12 had negative numbers up to -89 so I had to modify the accumarray function, and input it instead as:

A = accumarray([C12+1, S12+90], 1);
mesh(A)

My question is: now that I plotted the values, how to I change the values of S12 back to their original values within the plot?

[Star Strider]

Context: http://www.mathworks.com/matlabcentral/answers/224847-how-to-create-bins-that-are-then-used-to-create-surf-function

[Guillaume]

Well, if this question is redundant and the discussion happens in the other thread, maybe it ought to be deleted?

[Star Strider]

I agree, but I’ll leave that decision to jgillis16. This thread began during the night for me (GMT-6), so I didn’t know then it had posted.

Answer 1

[Guillaume]

Wouldn't

mesh(S12, C12, A)

work?

[jgillis16]

No. Error received:

Error using mesh (line 79)
Data dimensions must agree.

Error in skymaskfinal (line 105)
mesh(S12, C12, A)

[jgillis16]

C12 - 179 x 361 double
S12 - 179 x 361 double
A - 361 x 179 double

[Guillaume]

How does accumarray work if C and S are 2D and with that many columns?

Wasn't your code

A = accumarray([C12(:)+1, S12(:)+1], 1)

rather?

Anyway, I didn't think this through properly, this should work (assuming the above A):

mesh(min(S):max(S), min(C):max(C), A)

Basically, you just want to pass to mesh the original range of your S and C.