adding data to dynamic field

Hi all,

I have written a for loop that creates new dynamic fields in
my existing data structure. It creates the first new field
fine but i can't seem to get data into it.

I want to initialize each of new array/field with zeros. DF
is a 647x1 structure.

length(DF)=647

dists=(20:20:200);
for iDists=1:length(dists)
binNum=strcat('bin',num2str(dists(iDists)));
DF.(binNum)=(zeros(length(DF));
end

and the error:

Insufficient outputs from right hand side to satisfy comma
separated list expansion on left hand side. Missing [] are
the most likely cause.

Where to put the []? I've tried them just about everywhere!
Thanks.

Jeff
.

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