How do I find the location of the closest point in a mesh?

I have a mesh with x,y and z data. I have a point of known reference that is within the coordinate range of the mesh, however it does not sit perfectly within it. I want to find the location of the closest point in the mesh to the reference point. I have found the minimum difference value in the x and y direction by using

GCP1xdiff=GCP1x-xi
GCP1xmin=min(abs(GCP1xdiff(ind,:)))

I now want to find the location of the nearest point within the mesh, I have tried something like

find(abs(min(GCP1x-xi))

But this does not work, any suggestions?

Many thanks!

[Stephen23]

Can you please clarify what _"the location of the nearest point within the mesh" is: do you want the nearest mesh intersection/node, or any point that lies along one of the x/y lines of the mesh?

Answer 1

[Jan]

Do you mean:

[GCP1xmin, Index] = min(abs(GCP1xdiff(ind,:)))

?

But what is "ind"?

[John Hart]

Ind is the number of columns in the dataset. So this allows all of the rows and columns in GCP1Xdiff to be looked at.

Sorry for the slow response