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plotting a feather plot for u and v component

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Giulia
Giulia 2023-6-9
评论： Giulia 2023-6-19
Hi everyone.
How can I plot a figure similar to the example below, using the nctdf data attached?
The lon (longitude) and latitude represents a small area, it would be ideal to plot exactly the point within this area which is of the following coordinates:
exactlat = 53.75129
exactlon =-5.181839
Thank you in advance for the help!
  2 个评论
Giulia
Giulia 2023-6-12
Hi Adam,
Yes I have tried it but somehow it comes out like that rather than with the arrows:

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Adam Danz
Adam Danz 2023-6-12
Ran in:
If you zoom into your data, you'll see that you've got arrows.
load('u10.mat')
load('v10.mat')
figure();
tcl = tiledlayout(2,1);
nexttile()
feather(squeeze(u10(1,1,:)),squeeze(v10(1,1,:)))
title('full view')
nexttile()
feather(squeeze(u10(1,1,:)),squeeze(v10(1,1,:)))
xlim([ 176.83 316.27])
title('zoomed')
Perhaps you could dow-sample your data. This example plot every 5th data point. Just consider the risks (clipping out important outliers or missing trends).
figure
idx = 1 : 5 : size(u10,3);
feather(squeeze(u10(1,1,idx)),squeeze(v10(1,1,idx)))
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Adam Danz
Adam Danz 2023-6-13
This line below plots every 10th data point starting with #5.
idx = 5 : 10 : size(u10,3)
Perhaps you'd rather use one of the following lines,
idx = 1 : 5 : size(u10,3) % [1 6 11 16,...]
idx = 5 : 5 : size(u10,3) % [5 10 15 20, ....]
We don't have a function that easily adds arrows like the one in the image you shared. You could certainly create a scatter plot using scatter to specify the color of each point. See the movmax documentation for demos to get you started on your other question. good luck!

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