selecting and averaging rows of a matrix

Hi!

I have a 1040 x 70 matrix of latitudes, longitudes and heights. I want to make a new matrix of latitudes and longitudes increasing in 0.5 steps, with height an average of all the previous heights within that range of latitudes/longitudes. I have tried loops and selecting rows, but am getting nowhere :(

Any advice?

[Azzi Abdelmalek]

How latitudes, longitudes and heights are represented in your matrix?

Answer 1

[Matt J]

Sounds like you might be looking for griddedInterpolant() or interp2().

Answer 2

[Image Analyst]

If your rows are in steps of 1.0 presently, and if you have the Image Processing Toolbox, you can use.

newMatrix = imresize(oldMatrix, 2.0);