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Histogram Styles

/ Published in: MatLab
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Plots a histogram from an external file with the frequency of each bin shown above each bar. The XTick is also the intervals of the histogram.

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  1. %==========================================================
  2. % Plots a histogram
  3. %  + Frequency labels
  4. %  + Bin edges
  5. %==========================================================
  6.  
  7. % Number of bins
  8. binNumbers = 10;
  9. % Load in data (single column data file)
  10. data = load('data.out');
  11.  
  12. % Close any graphs currently open
  13. close all;
  14.  
  15. % Plot histogram
  16. hist(data,binNumbers);
  17.  
  18. % Run hist function again to grab bins
  19. [n,xout] = hist(data,binNumbers);
  20.  
  21. % Set length of bins
  22. binLength = length(xout);
  23.  
  24. % Make graph fullscreen
  25. set(gcf, 'Position', get(0,'Screensize'));
  26.  
  27. % Graph labels
  28. xlabel('Bins');
  29. ylabel('Count');
  30. title('Histogram');
  31.  
  32. % Y-Offset value. Change accordingly
  33. offsetY = 33;
  34. % Put counts over the bars.
  35. for bin = 1 : binLength
  36.     caption = sprintf('%d', n(bin));
  37.     text(xout(bin), n(bin)+offsetY, caption, 'VerticalAlignment','bottom', 'HorizontalAlignment', 'center');
  38. end
  39.  
  40. % Bin edge variables
  41. max   = max(data);
  42. min   = min(data);
  43. width = ( max - min ) / binNumbers;
  44. ticks = min:width:max;
  45.  
  46. % Set new intervals
  47. set(gca,'XTick', ticks);

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