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Mollweide projection centered in eastern hemisphere reverses X axis #443
Description
When creating a Mollweide projection map with a positive lon_0 the x axis of the plot reverses.
I am using basemap version 1.1.0, matplotlib version 3.0.2, python 3.6, and Ubuntu 18.04.
import matplotlib.pyplot as plt
import numpy as np
from mpl_toolkits.basemap import Basemap
lons = [ 20, 20]
lats = [ 40, 20]
map = Basemap(projection='moll', resolution='l',
lon_0=np.mean(lons))
map.drawcoastlines(color='0.4')
map.drawcountries(color="0.75")
map.fillcontinents(color='coral',lake_color='aqua')
map.drawcoastlines()
x, y = map(lons, lats)
map.scatter(x, y, marker='D',color='m')
plt.show()The code above produces this image:
Activity
[-]Moll projection centered in eastern hemisphere reverses X axis[/-][+]Mollweide projection centered in eastern hemisphere reverses X axis[/+]WeatherGod commentedon Nov 26, 2018
wow... that's uhm... special. Not exactly sure how that is happening. What is your version of pyproj and the proj4 library (hopefully installed via conda?)
ocefpaf commentedon Nov 26, 2018
I can confirm that this happens with latest
proj4 5.2.0but not withproj4 4.9.3.d-chambers commentedon Nov 27, 2018
Yes installed with Anaconda.
pyproj: '1.9.5.1'
proj4: '5.2.0'
megies commentedon May 22, 2019
@d-chambers I wanted to see if proj4 v6 fixes the problem but now I can't reproduce it anymore. Would you mind checking if we can use proj4 v6 safely?
molinav commentedon Nov 21, 2023
A fix was provided by @YilongWang for issue #463, which is essentially a duplicate this issue. Since the fix is included in the upcoming hotfix release 1.3.9, I will close this issue.