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Fltering to subsets of matrices

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David on 4 May 2012
Closed: MATLAB Answer Bot on 20 Aug 2021
both Excel and Sql can 'query' and run functions on subsets of data based on common lable fields (e.g. return all sales in GA)
sum if 'GA' or count if 'GA'
Does Matlab have similare functionality?
  1 Comment
Sean de Wolski
Sean de Wolski on 4 May 2012
Please provide a small example (inputs/ops/expected outputs).

Answers (1)

per isakson
per isakson on 4 May 2012
sum( MyData( strcmp( MyData( :, ixColumn ), 'GA' ), : ), 1 )
This question is very close to Summing values with database "group by" functionality. It is a better tactic to provide a toy example than repeating the question! Didn't the answers to you other question help you?
per isakson
per isakson on 22 May 2012
Does your code work now?

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