MATLAB: How to remove all fields which start with a certain string

fieldsstring

Hello all,

I have a struct which contains fields (for example):

shufling_significance_pos_slices_50
shufling_significance_pos_slices_25
shufling_significance_pos_slices_15
shufling_significance_pos_slices_10
shufling_significance_pos_slices_5

How can I remove all fields which start with 'shufling_significance_pos_slices'?

Thanks in advance

Best Answer

prefix = 'shufling_significance_pos_slices';
fn = fieldnames(YourStructure);
tf = strncmp(fn, prefix, length(prefix));
newStructure = rmfield(YourStructure, fn(tf));

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fn = fieldnames(info.ROIcontour1);
fn = fn(strncmp(fn,'Slice',5));
nf = length(fn);
contourslices = cell(nf,1);
for K = 1 : nf
  countourslices{K} = info.ROIcontour1.(fn{K}).contourdata;
end

MATLAB: How to change struct name in a loop

Although there is a MATLAB function to do this, but it is a very bad practice to name your variables like this. It will make your code error prone and hard to debug. Therefore I am going to suggest the correct way to solve the problem. You should create a struct array and store the input number as a field of the struct. For example

for ii=1:10
  X = input('which individual? ');
  s(i).individualNumber = X;
  s(i).length = ...;
end

It will take 10 inputs from user and store them in struct array.

Best Answer

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