Unrecognized function or variable 'longitudeToIntrinsicX'.

Hello,

I wrote the code below in Matlab 2020b, using the documented Matlab function 'longitudeToIntrinsicX' and receive this error message

" Unrecognized function or variable 'longitudeToIntrinsicX' "

I have installed Mapping and image processing toolboxes. x&y are numeric. How is it possible that Matlab does not recognise this funktion? Can anybody help?

Thank you so much!

Robert

Answer 1

[Walter Roberson]

I predict that your R returned from readgeoraster is empty or else that the file refers to projected coordinates.

readgeoraster can return empty R, or a Geographic reference object, or a Map reference object. The function you are trying to use is a class method only for Geographic reference objects, and would not be found for empty R or Map reference objects.

[Robert Kenner]

Dear Walter,

Thank you for your fast reply.

R is not empty, see below. However, now I am wondering if I work in the wrong Coordinate system. Perhaps I can only work in WGS84?

all the best

Robert