how to put an scale for arrow size in quiver plot for wind vector over map?

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Mansi Gupta 2023-7-18

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https://ww2.mathworks.cn/matlabcentral/answers/1997433-how-to-put-an-scale-for-arrow-size-in-quiver-plot-for-wind-vector-over-map

回答： KSSV 2023-7-18

I have plotted wind vector over chlorophyll-a map using quiver, I do not want to put z scale or colorbar to the arrows as it would interfere with the chlorophyll colors. But I want to put a small box with size to wind speed reference for the black arrows as all arrow size is not same. Can anyone please help with how it can be done in matlab.

Thanks in advance!

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KSSV 2023-7-18

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在 MATLAB Online 中打开

[X,Y,Z] = peaks(50) ;

[u,v] = gradient(Z) ;

w = sqrt(u.^2+v.^2) ;

figure

hold on

h1 = pcolor(X,Y,w) ;

h2 = quiver(X,Y,u,v,'k') ;

axis tight

legend(h2,'Arrows')

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