MATLAB: How to find maxima and minima points of intensity plot of one row of an image

Image Processing Toolboxmaximumminimum finding

I want to plot intensity of single row of an MRI image, for that firstly I wrote –
i=dicomread('mri_7.dcm');
imshow(i)
improfile
from this I got intensity plot of any row or column. Now I want to find maximum and minimum values of that plot.So,please help me to get solution of this obstacle.
Thank you

Best Answer

Don't use i (the imaginary variable) as an image name or loop counter.
Try this:
oneRow = grayImage(myRow, :);
% Find the min and max
[minGL, indexOfMin] = min(oneRow)
[maxGL, indexOfMax] = max(oneRow)
See my demo, test.m, attached below in blue, which will generate the following figure.
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