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

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giacomo labbri
giacomo labbri el 16 de En. de 2021
Editada: Adam Danz el 20 de En. de 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

Respuestas (1)

Adam Danz
Adam Danz el 17 de En. de 2021
Editada: Adam Danz el 18 de En. de 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 comentarios
giacomo labbri
giacomo labbri el 18 de En. de 2021
Thanks for your asnwer!
I am not using any map function (unless quiver uses one by default). I am just feeding to quiver vectors that contains values of longitude and latitude as X and Y. The essence of what I am doing is in the MWE. My question is does this apprach produce reliable wind direction and lenght?
Adam Danz
Adam Danz el 18 de En. de 2021
Editada: Adam Danz el 20 de En. de 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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