plotting a feather plot for u and v component

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!

[Adam Danz]

What have you tried so far?

See feather

[Giulia]

Hi Adam,

Yes I have tried it but somehow it comes out like that rather than with the arrows:

Answer 1

[Adam Danz]

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)))

[Giulia]

I see. Thank you Adam.

How do I keep going with the code if I want to plot every 5th data point?

Will it be simply like below?

figure
idx = 5 : 10 : size(u10,3);
feather(squeeze(u10(1,1,idx)),squeeze(v10(1,1,idx)))

[Giulia]

Also, do you know how would it be possible to plot the the max in every 5 data points, but equally distributed, using the ‘movmax’ function?. And how to plot it with like the figure below?

Sorry for all the questions but I am new to Matlab (as you can imagine) and trying to figure out the best way to plot this data. Thanks again for your help so far!

[Adam Danz]

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!

[Giulia]

thank you!!! :)