# Anybody can help me to plot a sand rose diagram?

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Florentina il 6 Apr 2024
Risposto: Hassaan il 6 Apr 2024
Hello anyone. I never used Matlab and I need to plot a sand rose diagram, using Drift Potencial (DP) values within 16 bins direction and add the Resultant Drift Direction (RDD), which represent the direction of sand blowing (e.g 245).
Thank you!
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Dyuman Joshi il 6 Apr 2024
Do you mean wind rose diagram? If so, see - It will take some practice. polarhistogram.

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### Risposte (1)

Hassaan il 6 Apr 2024
% Your DP values for each of the 16 directional bins
dp_values = [/* your DP values here */];
rdd_value = 245; % example value
% Calculate the number of bins (directions)
num_bins = numel(dp_values);
% Create the bin edges for the polar histogram
% Assuming each bin has an equal width
bin_edges = linspace(0, 360, num_bins+1);
% Calculate the bin centers
bin_centers = (bin_edges(1:end-1) + bin_edges(2:end))/2;
% Create a polar plot
figure;
polarhistogram('BinEdges',bin_edges,'BinCounts',dp_values,'DisplayStyle','stairs');
% Add the RDD as a line on the plot
hold on;
rdd_max = max(dp_values); % Set the length of the RDD vector to the max DP value
% Plot the RDD as a line
% Optional: add a title and modify axes
title('Sand Rose Diagram with Resultant Drift Direction');
rlim([0 rdd_max]); % Set the limits of the radial axis
% Release the hold on the current figure
hold off;
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It's important to note that the advice and code are based on limited information and meant for educational purposes. Users should verify and adapt the code to their specific needs, ensuring compatibility and adherence to ethical standards.
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