how to read column wise pixels using FOR LOOP

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DB 2017-3-6

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https://ww2.mathworks.cn/matlabcentral/answers/328320-how-to-read-column-wise-pixels-using-for-loop

编辑： Adam 2017-3-7

采纳的回答： Adam

when I'm using this code I got below results....... figure,plot(sum(bw,2),1:size(bw,1));

so I need how to read column wise pixels using FOR LOOP? can any one tell me how to read pixels column wise ....?

Thanks in Advance

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Adam 2017-3-6

It still doesn't make sense what you want. Focus on the result you want. The fact you think you should use a for loop is irrelevant to what you are actually trying to get as an end result.

DB 2017-3-6

This is my input image

I want output like this

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Adam 2017-3-7

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https://ww2.mathworks.cn/matlabcentral/answers/328320-how-to-read-column-wise-pixels-using-for-loop#answer_257634

编辑：Adam 2017-3-7

在 MATLAB Online 中打开

Judging from your last comment what you want is a plot of the number of black pixels in each column of the image:

figure; area( sum( ~bw ) )

should give you this.

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