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Changing bin edges on polar histogram

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JVM
JVM le 17 Avr 2018
Hi, I am making a polar histogram showing wind directions. I would like each bin to represent each tick rather than representing the directions between to ticks as shown below. How do I change that, so e.g. the bin representing North takes value from [337.5 : 22.5]?
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Stephanie Reeves
Stephanie Reeves le 21 Avr 2021
I realize this was posted two years ago, but did you find the answer? I have the same problem. Currenting Googling and have come up with nothing. :/ Thank you!

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Réponses (1)

Scott MacKenzie
Scott MacKenzie le 6 Mai 2021
Modifié(e) : Scott MacKenzie le 6 Mai 2021
I suggest you work with bin edges in addition to the number of bins. Below are two examples. On the right, the bins are wind directions, as in your example, with the bins centered in each compass point.
% test data
y = 2*pi * rand(1,100);
tiledlayout('flow');
nexttile;
n = 8; % number of bins
binTheta = 360 / n;
edges = (0:binTheta:360) + binTheta/2;
edges = deg2rad(edges);
polarhistogram(y, edges);
nexttile;
n = 16; % number of bins
labels = { 'E', 'ENE', 'NE', 'NNE', 'N', 'NNW' 'NW', 'WNW', 'W', ...
'WSW', 'SW', 'SSW', 'S', 'SSE', 'SE', 'SES'};
binTheta = 360 / n;
edges = (0:binTheta:360) + binTheta/2;
edges = deg2rad(edges);
polarhistogram(y, edges);
ax = gca;
ax.ThetaTick = 0:binTheta:360;
ax.ThetaTickLabels = labels;

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