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How to plot wind vectors with quivers on a latitude/logitude plot

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giacomo labbri
giacomo labbri on 16 Jan 2021
Edited: Adam Danz on 20 Jan 2021
Hi,
I am plotting some wind data and I would like to have the that shows the direction and speed of the wind at the location were they were taken (given by latitude and longitude).
Minimal working example:
lat=[10,11,13];
lon=[-59,-58,-55];
h1=[100,100,100];
h2=[200,200,200];
u_h1=[-2,-3,-5];
u_h2=[-3,-5,-7];
v_h1=[2,1,-1];
v_h2=[2,3,-2];
w_h1=[0,0,0];
w_h2=[0,0,0];
figure
quiver3(lon,lat,h1,u_h1,v_h1,w_h1)
hold on
quiver3(lon,lat,h2,u_h1,v_h1,w_h2)
Does quiver already produce reliable length and arrow direction even if the underling grid in lat and lon. It seems so from the example but i am perplexed how does it work.
If it does not work with lat and lon as x and y how can I substitute them ratining the information about the location?
Thanks in advance

Answers (1)

Adam Danz
Adam Danz on 17 Jan 2021
Edited: Adam Danz on 18 Jan 2021
There are various types of map functions and it's not clear which one you're using. Here's a demo showing a quiver plot on a map.
About the arrow lengths, see the scale input:
  2 Comments
Adam Danz
Adam Danz on 18 Jan 2021
> does this apprach produce reliable wind direction and length?
Yes. By default the length of the vectors are scaled to reduce overlap. If you want the vector length to equal the magnitude of the wind velocity, set the scale to 0 as suggested in my answer.

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