quiver

quiver(*args, **kwargs)

Plot a 2-D field of arrows.

Parameters:

• x – (array_like) Optional. X coordinate array.
• y – (array_like) Optional. Y coordinate array.
• u – (array_like) U component of the arrow vectors (wind field) or wind direction.
• v – (array_like) V component of the arrow vectors (wind field) or wind speed.
• z – (array_like) Optional, 2-D z value array.
• cmap – (string) Color map string.
• fill_value – (float) Fill_value. Default is -9999.0.
• isuv – (boolean) Is U/V or direction/speed data array pairs. Default is True.
• size – (float) Base size of the arrows.
• order – (int) Z-order of created layer for display.

Returns:

(VectoryLayer) Created quiver VectoryLayer.

Example:

f = addfile('D:/Temp/GrADS/model.ctl')
u = f['U'][0,'500','10:60','60:140']
v = f['V'][0,'500','10:60','60:140']
speed = sqrt(u*u+v*v)
layer = quiver(u, v, speed, 10, size=8)
title('Wind field')
colorbar(layer)