I have a raster that includes more than 120 million pixel values and it has values of 0,1,10,11. I would like to create a barplot to show their frequencies;


gives me this;


But, I would like Y-axis to show the percentage of those pixels' values, not the amount. How can I make this? or Can you give me any other suggestions to do that?


The barplot() function dose not generate a histogram, but a barplot.

For generate a histogram with the stard functions of R you must use the hist() function :


You can also use the density() function for generate a density curve :


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