AzimuthalEquidistant Landarea Projection issue in the southern hemisphere #2030
Description
Description
Hi Team,
I have been encountering an issue that may be related to other issues here concerning the accurate plotting of land areas when providing the keywords central_longitude=?? and central_latitude=??. I attached a working and a failing example. There is no error, but the plotting is weird. I'm running on macOS with a fresh conda environment with only cartopy and matplotlib installed like so:
conda create -n cartopy python matplotlib cartopyWhen creating a AzimuthalEquidistant projection instance using
central_longitude=-66
central_latitude=-25The land areas fill the entire map:
However, if I use a latitude just slightly closer to the equator the projection is completely fine:
central_longitude=-66
central_latitude=-22Code to reproduce
Failing example
central_longitude=-66, central_latitude=-25
from cartopy.crs import AzimuthalEquidistant, PlateCarree
import matplotlib.pyplot as plt
import cartopy
fig = plt.figure()
projection = AzimuthalEquidistant(central_longitude=-66, central_latitude=-25)
ax = plt.axes(projection=projection)
ax.set_global()
# only fails for very certain central_longitude=????, central_latitude=????
ax.add_feature(cartopy.feature.LAND, zorder=0, edgecolor='k',
linewidth=0.5, facecolor=(0.8, 0.8, 0.8))
plt.show()
Working as expected example
central_longitude=-66, central_latitude=-22
from cartopy.crs import AzimuthalEquidistant, PlateCarree
import matplotlib.pyplot as plt
import cartopy
fig = plt.figure()
projection = AzimuthalEquidistant(central_longitude=-66, central_latitude=-22)
ax = plt.axes(projection=projection)
ax.set_global()
# only fails for very certain central_longitude=????, central_latitude=????
ax.add_feature(cartopy.feature.LAND, zorder=0, edgecolor='k',
linewidth=0.5, facecolor=(0.8, 0.8, 0.8))
plt.show()
System Summary
Note that anaconda is using python=3.7.x but the cartopy environment is using python=3.10.x.
conda info
active environment : cartopy
active env location : /Users/lucassawade/anaconda3/envs/cartopy
shell level : 1
user config file : /Users/lucassawade/.condarc
populated config files : /Users/lucassawade/.condarc
conda version : 4.12.0
conda-build version : 3.17.8
python version : 3.7.3.final.0
virtual packages : __osx=10.16=0
__unix=0=0
__archspec=1=x86_64
base environment : /Users/lucassawade/anaconda3 (writable)
conda av data dir : /Users/lucassawade/anaconda3/etc/conda
conda av metadata url : None
channel URLs : https://conda.anaconda.org/conda-forge/osx-64
https://conda.anaconda.org/conda-forge/noarch
https://repo.anaconda.com/pkgs/main/osx-64
https://repo.anaconda.com/pkgs/main/noarch
https://repo.anaconda.com/pkgs/r/osx-64
https://repo.anaconda.com/pkgs/r/noarch
package cache : /Users/lucassawade/anaconda3/pkgs
/Users/lucassawade/.conda/pkgs
envs directories : /Users/lucassawade/anaconda3/envs
/Users/lucassawade/.conda/envs
platform : osx-64
user-agent : conda/4.12.0 requests/2.23.0 CPython/3.7.3 Darwin/21.2.0 OSX/10.16
UID:GID : 503:20
netrc file : None
offline mode : False
Operating system
macOS=12.1
Cartopy version
cartopy=0.20.2
conda list
# packages in environment at /Users/lucassawade/anaconda3/envs/cartopy:
#
# Name Version Build Channel
brotli 1.0.9 h0d85af4_6 conda-forge
brotli-bin 1.0.9 h0d85af4_6 conda-forge
bzip2 1.0.8 h0d85af4_4 conda-forge
c-ares 1.18.1 h0d85af4_0 conda-forge
ca-certificates 2021.10.8 h033912b_0 conda-forge
cartopy 0.20.2 py310he18ef84_4 conda-forge
certifi 2021.10.8 py310h2ec42d9_1 conda-forge
cycler 0.11.0 pyhd8ed1ab_0 conda-forge
fonttools 4.31.2 py310h1961e1f_0 conda-forge
freetype 2.10.4 h4cff582_1 conda-forge
geos 3.10.2 he49afe7_0 conda-forge
giflib 5.2.1 hbcb3906_2 conda-forge
jbig 2.1 h0d85af4_2003 conda-forge
jpeg 9e h0d85af4_0 conda-forge
kiwisolver 1.4.0 py310h6be76da_0 conda-forge
krb5 1.19.3 hb98e516_0 conda-forge
lcms2 2.12 h577c468_0 conda-forge
lerc 3.0 he49afe7_0 conda-forge
libblas 3.9.0 13_osx64_openblas conda-forge
libbrotlicommon 1.0.9 h0d85af4_6 conda-forge
libbrotlidec 1.0.9 h0d85af4_6 conda-forge
libbrotlienc 1.0.9 h0d85af4_6 conda-forge
libcblas 3.9.0 13_osx64_openblas conda-forge
libcurl 7.82.0 h9dce1e3_0 conda-forge
libcxx 13.0.1 hc203e6f_0 conda-forge
libdeflate 1.10 h0d85af4_0 conda-forge
libedit 3.1.20191231 h0678c8f_2 conda-forge
libev 4.33 haf1e3a3_1 conda-forge
libffi 3.4.2 h0d85af4_5 conda-forge
libgfortran 5.0.0 9_3_0_h6c81a4c_23 conda-forge
libgfortran5 9.3.0 h6c81a4c_23 conda-forge
liblapack 3.9.0 13_osx64_openblas conda-forge
libnghttp2 1.47.0 hca56917_0 conda-forge
libopenblas 0.3.18 openmp_h3351f45_0 conda-forge
libpng 1.6.37 h7cec526_2 conda-forge
libssh2 1.10.0 hd3787cc_2 conda-forge
libtiff 4.3.0 h17f2ce3_3 conda-forge
libwebp 1.2.2 h28dabe5_0 conda-forge
libwebp-base 1.2.2 h0d85af4_1 conda-forge
libxcb 1.13 h0d85af4_1004 conda-forge
libzlib 1.2.11 h6c3fc93_1014 conda-forge
llvm-openmp 13.0.1 hcb1a161_1 conda-forge
lz4-c 1.9.3 he49afe7_1 conda-forge
matplotlib 3.5.1 py310h2ec42d9_0 conda-forge
matplotlib-base 3.5.1 py310hfc59cd6_0 conda-forge
munkres 1.1.4 pyh9f0ad1d_0 conda-forge
ncurses 6.3 he49afe7_0 conda-forge
numpy 1.22.3 py310hb608527_0 conda-forge
openjpeg 2.4.0 h6e7aa92_1 conda-forge
openssl 3.0.2 h6c3fc93_1 conda-forge
packaging 21.3 pyhd8ed1ab_0 conda-forge
pillow 9.0.1 py310h382dc3b_2 conda-forge
pip 22.0.4 pyhd8ed1ab_0 conda-forge
proj 9.0.0 h2364a93_1 conda-forge
pthread-stubs 0.4 hc929b4f_1001 conda-forge
pyparsing 3.0.7 pyhd8ed1ab_0 conda-forge
pyproj 3.3.0 py310h8089d31_2 conda-forge
pyshp 2.2.0 pyhd8ed1ab_0 conda-forge
python 3.10.4 h1cc4136_0_cpython conda-forge
python-dateutil 2.8.2 pyhd8ed1ab_0 conda-forge
python_abi 3.10 2_cp310 conda-forge
readline 8.1 h05e3726_0 conda-forge
scipy 1.8.0 py310h47774c9_1 conda-forge
setuptools 61.2.0 py310h2ec42d9_1 conda-forge
shapely 1.8.0 py310hbb63119_5 conda-forge
six 1.16.0 pyh6c4a22f_0 conda-forge
sqlite 3.37.1 hb516253_0 conda-forge
tk 8.6.12 h5dbffcc_0 conda-forge
tornado 6.1 py310he24745e_2 conda-forge
tzdata 2022a h191b570_0 conda-forge
unicodedata2 14.0.0 py310he24745e_0 conda-forge
wheel 0.37.1 pyhd8ed1ab_0 conda-forge
xorg-libxau 1.0.9 h35c211d_0 conda-forge
xorg-libxdmcp 1.1.3 h35c211d_0 conda-forge
xz 5.2.5 haf1e3a3_1 conda-forge
zlib 1.2.11 h6c3fc93_1014 conda-forge
zstd 1.5.2 h582d3a0_0 conda-forge
pip list
Package Version
--------------- ---------
Cartopy 0.20.2
certifi 2021.10.8
cycler 0.11.0
fonttools 4.31.2
kiwisolver 1.4.0
matplotlib 3.5.1
munkres 1.1.4
numpy 1.22.3
packaging 21.3
Pillow 9.0.1
pip 22.0.4
pyparsing 3.0.7
pyproj 3.3.0
pyshp 2.2.0
python-dateutil 2.8.2
scipy 1.8.0
setuptools 61.2.0
Shapely 1.8.0
six 1.16.0
tornado 6.1
unicodedata2 14.0.0
wheel 0.37.1