Repository navigation
Error for bbox_inches='tight' in savefig with make_axes_locatable #12355
Description
Bug report
Bug summary
When setting bbox_inches='tight' in savefig function, the colorbar is plotted in the wrong way.
Code for reproduction
import matplotlib.pyplot as plt
import numpy as np
from mpl_toolkits.basemap import Basemap
outfile = r'E:\wrong.tif'
# read in data on lat/lon grid.
hgt = np.loadtxt(r'E:\tmp\basemap\500hgtdata.gz')
lons = np.loadtxt(r'E:\tmp\basemap\500hgtlons.gz')
lats = np.loadtxt(r'E:\tmp\basemap\500hgtlats.gz')
lons, lats = np.meshgrid(lons, lats)
mnh = Basemap(lon_0=-105, boundinglat=20.,
resolution='c', area_thresh=10000., projection='nplaea')
xnh, ynh = mnh(lons, lats)
CS = mnh.contour(xnh, ynh, hgt, 15, linewidths=0.5, colors='k')
CS = mnh.contourf(xnh, ynh, hgt, 15, cmap=plt.cm.Spectral)
mnh.drawcoastlines(linewidth=0.5)
delat = 30.
circles = np.arange(0., 90., delat).tolist() + \
np.arange(-delat, -90, -delat).tolist()
mnh.drawparallels(circles, labels=[1, 0, 0, 0])
delon = 45.
meridians = np.arange(0, 360, delon)
mnh.drawmeridians(meridians, labels=[1, 0, 0, 1])
plt.title('NH 500 hPa Height (cm.Spectral)')
# colorbar on bottom.
mnh.colorbar(pad='5%')
plt.savefig(outfile, dpi=300, bbox_inches='tight') # wrong
# plt.savefig(outfile, dpi=300) # right
plt.show()Actual outcome
The wrong one:
# If applicable, paste the console output here
# None
#
Expected outcome
The correct figure:
Matplotlib version
- Operating system: Windows 10 x64
- Matplotlib version: 3.0.0
- Matplotlib backend (
print(matplotlib.get_backend())): module://backend_interagg - Python version: 3.6.6
- Jupyter version (if applicable): None
- basemap version: 1.2.0
- PyCharm version: 2018.2.4
I install matplotlib and basemap from https://www.lfd.uci.edu/~gohlke/pythonlibs.
Activity
jklymak commentedon Oct 1, 2018
This should probably be reported in the base map subgroup. Can you make this self contained?
Things changed for drawing colorbars in MPL 3.0 and it’s possible we broke something for basemap, but it’s hard to know what.
jiaozhh commentedon Oct 1, 2018
OK, I will report it in the basemap subgroup.
jklymak commentedon Oct 1, 2018
OK I can reproduce in Matplotlib:
Edit: has nothing to do with colorbar:
bbox_inches='tight'interaction -plt.show()andplt.tight_layout()work as expected.jklymak commentedon Oct 1, 2018
Crossref matplotlib/basemap#426
jklymak commentedon Oct 1, 2018
Bisect says it was my PR: #9855
jklymak commentedon Oct 1, 2018
This is quite a wild goose chase: #10682 also made this not work even if I roll back #9855 changes.
[-]Error for bbox_inches='tight' in savefig[/-][+]Error for bbox_inches='tight' in savefig with make_axes_locatable[/+]