numeric values need to be equalize to symbolic values.

Question

sermet 2014-5-7

回答： Star Strider 2014-5-7

distances=[100 120;200 220]
  points_id=[{'p1'} {'p2'};{'p3'} {'p4'}]

% I need to equalize each matrixes to each other.

%for example, 100='p1' , 120='p2' , 200='p3' , 220='p4'

%then, when I need to learn the numeric values symbol, for example, 220, I could be retrive 'p4' as a symbolic assigned value of 220.

Answer 1

Star Strider 2014-5-7

Here are two functions, the first will find point_id given an element of the distances matrix:

pointfind = @(d) points_id(find(distances == d));

so

p = pointfind(220)

returns

p = 
      'p4'

and the second one will find the corresponding element in distances given an element in the point_id array:

distfind = @(p) distances(find(cellfun(@isempty, strfind(points_id, p)) == 0));

so

d = distfind('p4')

returns

d =
     220