title: Python or R! - draw histograms for specified raster files
body: <p>I have two raster files (one with big cell size and second with much smaller.)
  I have written a Python script which splits these files into pieces limited by bigger cells.</p>
  
  <p>Now I want to draw a histogram for cell values and add value (for example as a line) from the bigger cell. Unfortunately I don't know how to do it in R (it may be useful, because I want to do this operation for many folders)</p>
  
  <p>Could you help me?</p>