Vertical Lookup of values stored in a matrix

What functions are available to lookup values in a matrix using one of the columns as an index? The corollary function in Excel would be "VLOOKUP(index,array,col_num,approx?)". I have tried implementing Simulink's n-D Table Lookup, but it won't let me edit it. Also, I need this to run within a Matlab program within a for-loop.

[James Tursa]

Please provide a short example.

[dpb]

While we're waiting for that example, lookup "logical addressing" and interp1

Answer 1

[Stephen Fry]

While continuing my search, I found this Access Data in a Table by accident. It needs to publicized more. This will perform both vertical and horizontal lookup for tables, but maybe not matrices. Anyways, it suits my purpose just fine.