MATLAB: Make the FIND more compact

compact line

Hi Coder, Just out of curiosity, if we can make the last two lines into a single line?

M = zeros (9,1);
Alert_LessThree = 1:3; 
B = [2 4 4 4 1 5 6 7 8];
[tf,Ioc_Alert_LessThree] = find (ismember(B, Alert_LessThree)); 
M(Ioc_Alert_LessThree,:) = 2;

Thank you

Best Answer

M( ismember(B, Alert_LessThree) ) = 2

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MATLAB: How to efficiently Assign Value to column vector

balandong - your first for loop is

 for i = 1: length (tf)
    M (i,1) = Height (tf(i));
 end

Try replacing this with

M = zeros(length(tf),1);
M(1:length(tf)) = Height(tf(1:length(tf)))

Something similar can be done for the second for loop too.

MATLAB: Combine 2 image results of segmentation, into one of axes

I may not understand the question, but why not just use segmented portions 5 and 6 as a mask on the original BW image? I guess the workflow would be something like

- extract the segments

- make an image of "falses" the same size as the original called BWsegs

- set the indices of segment 5 as "true" in BWsegs

- set the indices of segment 6 as "true" in BWsegs

The BWsegs is what you're looking for. You can use regionprops to get the bounding box for cropping if you'd like.

Best Answer

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MATLAB: How to efficiently Assign Value to column vector

MATLAB: Combine 2 image results of segmentation, into one of axes

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