How to remove rows from structure based on value condition of field?

Hi all,

In my structure class titled 'rawMeasurements' created by the function 'regionprops', I want to remove all rows with a value <10 from the first field called Area.

I tried this to start filtering out all the row's with a value of 1, but it doesn't seem to work and I'm guessing this isn't the best way to do this:

idx = ismember({rawMeasurements.Area}, {'1'});
rawMeasurements = rawMeasurements(~idx);

Does anyone know a way to fix this approach or come up with a new approach entirely?

If you need any additional info, please let me know.

Thank you!

Answer 1

[Image Analyst]

If you want a binary image with no blobs less than 10, call bwareaopen() before calling regionprops():

mask = bwareaopen(mask, 10); % Throw away blobs of 9 pixels or smaller.
rawMeasurements = regionprops(mask, 'Area');
allAreas = [rawMeasurements.Area]

Answer 2

[KSSV]

rawMeasurements.Area(rawMeasurements.Area<10) = [] 

[Stan Wissink]

Thank you for your answer!

Unfortunately, I get an error saying "Error using '<', too many input arguments."

Answer 3

[Awais Saeed]

S.A = [1 2 3 4 5 6; 11 12 13 14 15 16; 21 22 23 24 25 26; 31 32 1 34 35 36];
S.B = ceil(50*rand(2,2));
S.C = "Some string";
S.D = 3;

[rows,~] = find(S.A < 10);
rows = unique(rows);
S.A(rows,:) = [];