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Looping over table variable to access structure

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roblocks
roblocks 2016-5-19
评论： roblocks 2016-5-19
Dear All,
Suppose you have a table and structure of the following format
A code size
obs1 an 10
obs2 bg 8
obs3 cf 5
and a structure:
structurename.an
sturcturename.ag
sturcturename.cf
containing some stuff. Assume code is unique and any codes in the table are also part of the structure. I would now like to access the first n structure variables by size defined in table. So for example the first largest to I want matlab to take "an" and "ag" and then compute something with it. What is the best way to loop through tables?
Thanks in advance!
Best

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Guillaume
Guillaume 2016-5-19
1. Sort your table by decreasing size:
tsorted = sortrows(t, 'size', 'descend');
2. Simply iterate over the rows and use dynamic field names to access your structure:
for row = 1:n
val = structurename.(sortedt{row, 'size'});
%do something with val
end

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