save all for loop data into workspace

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tarek abousaleh
tarek abousaleh 2018-3-12
回答： Bob Thompson 2018-3-12
I have a for loop, but every iteration overwrites the variable and I have only the final data left.. how can I save data from every loop the new images i am having have different matrices when i dicomread them because they are from type uint and not double saves only the last value when R=172. how do I get the other values?
for c=1:172
name1 = strcat(folder_name1,'/',filesStruct1(c).name);
alpha = dicomread(name1)
R = (((double(alpha).*pi)./(4096)) - (pi./2))
dicomwrite(R, (strcat('Results/',filesStruct1(c).name)));
end
please if somebody can help me by editing that on my code, I am kind of using matlab since a few months thanks in advance

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采纳的回答

Bob Thompson
Bob Thompson 2018-3-12
Easiest way to do this is with indices within your code. Instead of having R be the value you are writing, you want to write R(c), or R{c} depending on the type of data R contains. The first is for a regular double array, while the second is for a cell.
for c=1:172
name1 = strcat(folder_name1,'/',filesStruct1(c).name);
alpha = dicomread(name1)
R(c) = (((double(alpha).*pi)./(4096)) - (pi./2))
dicomwrite(R(c), (strcat('Results/',filesStruct1(c).name)));
end

更多回答（1 个）

Geoff Hayes
Geoff Hayes 2018-3-12
tarek - use a cell array to store the data (R) on each iteration of the for loop. For example,
myImageData = cell(172,1);
for c=1:172
name1 = strcat(folder_name1,'/',filesStruct1(c).name);
alpha = dicomread(name1)
R = (((double(alpha).*pi)./(4096)) - (pi./2))
dicomwrite(R, (strcat('Results/',filesStruct1(c).name)));
myImageData(c) = R;
end
Once you have iterated over all 172 images, then the myImageData cell array will have the R from each iteration.

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