Graphics

Histograms in Polar Coordinates

A rose plot is a histogram created in a polar coordinate system. For example, consider samples of the wind direction taken over a 12-hour period.

• wdir = [45 90 90 45 360 335 360 270 335 270 335 335];
  

To display this data using the rose function, convert the data to radians; then use the data as an argument to the rose function. Increase the LineWidth property of the line to improve the visibility of the plot (findobj).

• wdir = wdir * pi/180;
  rose(wdir)
  hline = findobj(gca,'Type','line');
  set(hline,'LineWidth',1.5)
  

The plot shows that the wind direction was primarily 335° during the 12-hour period.

Histograms in Cartesian Coordinate Systems

Specifying Number of Bins