Matrix does not compile
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Jon Camilleri
le 21 Nov 2015
Commenté : Image Analyst
le 21 Nov 2015
I am trying to create a bit string, however, this does not compile:
if ((iris_data{1,1} < mean(iris_data{1,1}) r={1,0,0,0};
Error: Unexpected MATLab expression
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James Tursa
le 21 Nov 2015
Modifié(e) : James Tursa
le 21 Nov 2015
Looks like you have unbalanced parentheses. E.g., this would fix that problem:
if iris_data{1,1} < mean(iris_data{1,1})
r={1,0,0,0};
end
BUT I have to question the logic in this. It looks like you may have a vector expression here:
iris_data{1,1} < mean(iris_data{1,1})
Which would mean the if-test is likely not doing what you really wanted. Can you explain in more detail what you want this if-test to do? What exactly is iris_data{1,1}, and what is r supposed to be?
2 commentaires
Image Analyst
le 21 Nov 2015
Well when they're cells, we call it a "cell array" rather than a matrix, though actually it is a matrix composed of cells. Please, please, please read the FAQ on cells.
So, the upper left cell, iris_data{1,1} -- what is that? Is it a single scalar number? Or is it a vector or a whole matrix? And why are you using cells instead of a much, much simpler numerical array, which, by the way has far less overhead and takes up far less memory?
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