It is not clear what "testset" is, but if it is a cell array then the notation you are using in your TestNetwork call will produce a comma-separated-list for testset{:,i}. So if there is more than one row in testset, you will get more than one input argument for the notation testset{:,i}. That, combined with the network argument input, will produce three or more inputs to the TestNetwork function ... hence the error since TestNetwork only takes two inputs. E.g.,
>> testset = {1,2:3;4:6,7:10} % <-- A 2x2 cell array
testset =
[ 1] [1x2 double]
[1x3 double] [1x4 double]
>> testset{:,1} % <-- The first column of testset, "dereferenced" with the curly { } notation
ans =
1
ans =
4 5 6
When you "dereference" the cell array column with the curly brackets { }, the result is a comma-separated-list ... which in this case is equivalent to two values separated by commas. I.e., the notation testset{:,1} is equivalent to the following explicitly types values:
>> testset{1,1},testset{2,1}
ans =
1
ans =
4 5 6
I.e., the curly brackets { } used above is as if you typed in two separate values separated by a comma ... it is equivalent to the above.
