How to plot spatial data

Hi, I would like to plot some spatial data.

In particular, I have three variables,

lat 81x1 single

lon 241x1 single

u 241x81 double

I have another code from a uni course, but the variable dimension where different. So I tried to change it and obtained the code reported.

fig2=figure('units','normalized','outerposition',[0.5 0.5 0.4 0.55]);
hold on
worldmap([double(min(lat)) double(max(lat))], [double(min(lon)) double(max(lon))]);
plot(lat,lon, u)

But I get the error:

Error using plot Vectors must be the same length.

Error in ERA5 (line 22) plot(lat,lon, u)

Could you help me please? Thank you!

Answer 1

[Benjamin Kraus]

As the error says, lat and lon need to be the same size.

Based on the shape of your variables, I suspect you need to use meshgrid to convert your variables from vectors to matrices. Something like this:

[LAT, LON] = meshgrid(lat, lon);
plot(LAT(:), LON(:), u(:))