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Greetings! > First, I keep missing your python classes, our you have any online classes > soon? We haven't offered an online one in a bit, we've been working behind the scenes on reworking how we offer that training. I'll keep a note of your interest as we look towards our next workshop schedule. > Second, I would like to show 100mb winds across the Pacific (see attachment). > I can do this with contouring packages using the following code segments: I was able to make a quiver work with some synthetic data as: import cartopy.crs as ccrs import cartopy.feature as cfeature import matplotlib.pyplot as plt import numpy as np center_lon = 180 fig = plt.figure(figsize=[9, 9], facecolor='lightgrey') ax = fig.add_subplot(1, 1, 1, projection=ccrs.PlateCarree(central_longitude=center_lon)) ax.set_extent([100, 265, -25, 50], crs=ccrs.PlateCarree()) ax.add_feature(cfeature.STATES, edgecolor='white', linewidth=1.5) ax.add_feature(cfeature.COASTLINE, edgecolor='white', linewidth=2.0) ax.add_feature(cfeature.LAND) lon = np.linspace(-120, 120, 10) lat = np.linspace(-10, 40, 5) lon2D_sub, lat2D_sub = np.meshgrid(lon, lat) u_sub = np.full_like(lon2D_sub, 5) v_sub = np.full_like(lon2D_sub, 5) Q = plt.quiver(lon2D_sub, lat2D_sub, u_sub, v_sub, angles="xy", color='black', units='width',transform=ccrs.PlateCarree(central_longitude=center_lon)) This worked fine for me here with Cartopy 0.21.1. I suspect that this is heavily dependent on: 1. Having the data in the right "kind" of longitude; I used the -180 -> 180 system 2. Having the data for the eastern hemisphere before the data for the western Maybe the synthetic data I created above can shed some light on where yours differs? Hope this helps, Ryan Ticket Details =================== Ticket ID: XNB-470459 Department: Support Python Priority: Low Status: Closed =================== NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.