Package: python3-mpltoolkits.basemap
Version: 1.0.7+dfsg-4
Severity: normal
Tags: patch
Dear Maintainer,
When using the "contourf" function, some map-projections (e.g. 'mill')
fail with the following error condition:
IndexError: only integers, slices (`:`), ellipsis (`...`), numpy.newaxis
(`None`) and integer or boolean arrays are valid indices
This is triggered near line 3644
of /usr/lib/python3/dist-packages/mpl_toolkits/basemap/__init__.py,
where there is a floating-point divide '/' in computing x.shape[0]/2,
rather than a rounding divide '//'.
Since upgrading from 'jessie' to 'stretch', there appear to have been changes
somewhere in the python3/numpy/matplotlib/basemap stack which mean
that this division is now returning a floating-point number,
which is not valid for indexing numpy arrays.
The attached (minuscule) patch (replacing '/' with '//')
seems to fix the problem.
Kind regards,
RW Penney
-- System Information:
Debian Release: 9.0
APT prefers stable
APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 4.9.0-3-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8), LANGUAGE=en_GB:en
(charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages python3-mpltoolkits.basemap depends on:
ii libc6 2.24-11+deb9u1
ii libgeos-c1v5 3.5.1-3
ii python-mpltoolkits.basemap-data 1.0.7+dfsg-4
ii python3 3.5.3-1
ii python3-matplotlib 2.0.0+dfsg1-2
python3-mpltoolkits.basemap recommends no packages.
Versions of packages python3-mpltoolkits.basemap suggests:
ii python3-scipy 0.18.1-2
-- no debconf information
--- python3/dist-packages/mpl_toolkits/basemap/__init__-orig.py 2017-07-21
05:45:55.215475663 +0100
+++ python3/dist-packages/mpl_toolkits/basemap/__init__.py 2017-07-21
05:46:07.355478959 +0100
@@ -3641,7 +3641,7 @@
# with the shiftgrid function.
# only do this check for global projections.
if self.projection in _cylproj + _pseudocyl:
- xx = x[x.shape[0]/2,:]
+ xx = x[x.shape[0]//2,:]
condition = (xx >= self.xmin) & (xx <= self.xmax)
xl = xx.compress(condition).tolist()
xs = xl[:]
