Make values on y-axis in histogram to shrink.

I have a Histogram of Binary Image. On y-axis I have values up to 2000. How can make it small so that the graph appears big. For example how can show only 1000 values on y-axis instead of 2000..

Thanks

Answer 1

[Walter Roberson]

Change the number of bins in the histogram.

Answer 2

[Image Analyst]

A binary image will have only two bins, one at 0 and one at 1, since there are only two values (false and true, or 0 and 1) in the image. One bin will have some number of counts, like 1500, and the other bin will contain a value equal to the number of pixels in the image minus the count in the other bin.

If you want to clip the y axis to some value, you can use ylim:

ylim([0 1000]);

If you want to compress the y scale, then you can plot the log of the y values (the count values) instead of using it linearly:

pixelCounts = imhist(binaryImage, 2);
bar(log(pixelCounts));

but be sure to adjust the y axis labels to be the original y values instead of the logged y values.