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  • 00:58
    AlxndrLhr closed #2086
  • Sep 29 18:47
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  • Sep 27 16:16
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  • Sep 27 14:09
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  • Sep 27 07:35
    QuLogic closed #2088
  • Sep 27 07:30
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  • Sep 27 05:46
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    dopplershift commented #2087
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    dopplershift commented #2088
  • Sep 26 18:00
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  • Sep 26 17:57
    PBrockmann opened #2088
Ryan May
@dopplershift
Are uipvPlot and vipvPlot the same size as lons[::3] and lats[::3]? Have you tried making PlateCarree() the projection for plotting just to see if that works or if there's a data issue?
Stephane Raynaud
@stefraynaud
The gridliner is revised in #PR1537 to fix a few issues. Figure samples are available here: https://drive.google.com/drive/folders/15Sz5buIrjPcEz1FwniLgBDYn6GCXvNV7
If ok, I will update baseline images and add a few ones.
Hakkeh4x0r
@Hakkeh4x0r
Hello. What is the plan and timeline for next release (days or weeks)?
dsitaram
@dsitaram
hello, when I try to turn off the axis labels in grid liner (eg. gl.xlabels_top = False), the axis labels remain. I am using the EquidistantConic Projection. Does anyone know how to fix this?
Greg Lucas
@greglucas
Which version are you using? It changed to gl.top_labels = False in 0.18 I believe. https://scitools.org.uk/cartopy/docs/latest/matplotlib/gridliner.html
@Hakkeh4x0r , there is not currently any definitive plan for the next release.
emsterr
@emsterr
(@Hakkeh4x0r here), @greglucas okey, I have a couple of PRs that is needed in my production line and hoped they would be accepted in the near future. But I will just set up a in-house solution for now and wait. I created issue #1671, could you give me some feedback when you have the time.
Stephane Raynaud
@stefraynaud
You should probably never wait for official releases for your production line.
emsterr
@emsterr
I do agree @stefraynaud and that is why i asked :) if you have had a release in days or a week, I wouldn't bother wasting time on local integration.
winash12
@winash12

Are uipvPlot and vipvPlot the same size as lons[::3] and lats[::3]? Have you tried making PlateCarree() the projection for plotting just to see if that works or if there's a data issue?

@dopplershift Sorry about that. I will try to keep it here. The original shapes are (73) lats and (144) lons. When I take lons[:3] and lats[:3] I get 48 and 25. So the shapes of uipvPlot and vipvPlot are (25,48) and (25,48) . The thing is that this error does not happen for all data sets. It is sporadic and happens periodically. What more information I need to print out so that I can move forward ?

1 reply
Ray Bell
@raybellwaves
Hopefully this is a quick one. Trying to plot a quiver key to the right of a map. tried the various tight_layout() etc. but didn't work. https://stackoverflow.com/questions/64708303/matplotlib-cartopy-quiver-key-cut-off/64709087#64709087
Stephane Raynaud
@stefraynaud
I'm not sure to understand the problem. What happens if you set x > 1?
1 reply
Stephane Raynaud
@stefraynaud
I see it when I save the figure, but not in spyder for example. so as you suggested, it comes from tight_layout and the way quiverkey objects are registered.
Ray Bell
@raybellwaves
Thanks @stefraynaud. I created a separate matplotlib Q : https://stackoverflow.com/questions/64717968/matplotlib-quiver-key-label-getting-cut
but one person is unable to reproduce it
Karl Schneider
@karlwx
Hi all, I've been a user for a while but decided I'll try contributing for the first time. I have successfully forked cartopy and made my own local repo and a new branch where I'll make some changes. I created a new conda environment, installed all the dependencies, and ran setup.py. However, when I make changes to the code in my local repo it seems to have no effect when I import cartopy and use it. What do I need to be doing to import my changed version?
Greg Lucas
@greglucas
It depends on where you're running the code from (in the same directory as the build, or in an external location). I usually install in editable mode pip install -e . and then you shouldn't need to recompile any of the extensions if you're just working in the Python code.
Karl Schneider
@karlwx
Thanks, that's what I needed!
Greg Lucas
@greglucas
No problem, looking forward to your contributions! :tada:
Philipe Riskalla Leal
@PhilipeRLeal
Dear all, I have recently made a pull request adding some functionalities for cartopy. Nevertheless, SciTools CLA returns an error in my pull request. When I click on SciTools link, I am redirected towards another page with some general information about SciTools, but no info regarding the error message.
Does anyone has any thoughts on the subject?
Greg Lucas
@greglucas
Here is a link to the CLA form: https://scitools.org.uk/cla/v4/form
That wasn't the easiest to find... We should put that somewhere more obvious in the documentation/contributing area.
Greg Lucas
@greglucas
The PyPI release uploads are taken care of with an encrypted Travis key. Does anyone have that password that we can port over to a secret in GitHub to let the GitHub Actions take care of the release uploads?
Ryan May
@dopplershift
Actualy, only Travis has the password for that key. But I have access to CartoPy and can create a new key.
Done. So authentication for PyPI on GH Actions should be done using the username __token__. The password is stored in ${{ secrets.pypi_token }} now.
Really, just use this to upload:
    - name: Publish Package
      uses: pypa/gh-action-pypi-publish@v1
      with:
        user: __token__
        password: ${{ secrets.pypi_token }}
Greg Lucas
@greglucas
:+1: Thanks. I just pushed that up. It looks like it is grabbing that "uses" container right away and it takes ~30 seconds to install. I wonder if we should put that in another job instead so it only gets called on tagged pushes...
Ryan May
@dopplershift
@greglucas I can say that's what I do on MetPy. I don't worry about tests passing, I just have it build releases artifacts and upload.
jadelilymay
@jadelilymay
Hi guys, I'm just new to Cartopy and I'm trying to plot out my data based on some given latitude and longitude, I tried to look into matplotlib but can't seem to find anything
Greg Lucas
@greglucas
Hi @jadelilymay, have you looked at the Cartopy docs? https://scitools.org.uk/cartopy/docs/latest/gallery/index.html
Specifically, https://scitools.org.uk/cartopy/docs/latest/matplotlib/intro.html, might help. If you have data and want to plot on a map projection, generally speaking you need to initialize the MPL axes with the projection you want to display the data in. Then you need to supply the transform= argument to your plotting functions with the projection that the data is coming from.
Philipe Riskalla Leal
@PhilipeRLeal

Dear @jadelilymay, I have managed to implement a small code snippet that reads your TIFF file, and plots it using cartopy. See if it helps you. The code is in the file test.py I just sent

Sincerely,

Philipe Riskalla Leal
@PhilipeRLeal
Dear @jadelilymay, in my last test.py file, I had forgotten to insert the extent attribute from the plt.imshow function. Therefore, the plotting wasn't making much sense.
This new file below solves the Issue. Check it out.
Kyle Penner
@kdpenner
have y'all thought of organizing a sprint at the scipy conference?
robertique
@robertique
Hi there! Is it possible to represent data on a map from a csv file which contain: time, longitude, latitude, 200 measured GSM channel levels. The representation should take into consideration the signal level in choosing colors..Thanks!
Leonardo
@leonardojimenez1990

hi, I use Ubuntu, python3.8 pip, pycharm. I have a problem with Cartopy. ModuleNotFoundError: No module named 'cartopy.crs'; 'cartopy' is not a package

r: ~ $ which python
/ usr / bin / python
r: ~ $ python -c 'import sys; print (sys.prefix) '
/ usr
r: ~ $ python -c 'import cartopy.crs as ccrs'
Traceback (most recent call last):
File "<string>", line 1, in <module>
ImportError: No module named cartopy.crs

Ryan May
@dopplershift
@leonardojimenez1990 How did you install cartopy?
@robertique You should be able to do that with ax.scatter(lon, lat, c=level, transform=ccrs.PlateCarree())
Leonardo
@leonardojimenez1990
@dopplershift Thanks, I could solve the error by configuring cartopy with python3.
Leonardo
@leonardojimenez1990

Hello. I would like to know how I can plot on a map the data from the variable "r" (relative humidity) of a NetCDF file with cartopy?

#

from netCDF4 import Dataset
import numpy as np
import xarray as xr
import cartopy.crs as ccrs
import matplotlib.pyplot as plt

leer el archive

ds=Dataset('relative_humidityEne_Dic2003_2020CMAS.nc', 'r')

print(ds)

mostar las variables del archive

print(ds.variables.keys())

accede a las variables

lon = ds.variables["longitude"]

print("longitude:===== ",lon)

lat = ds.variables["latitude"]

print("latitude:======= ",lat)

level = ds.variables["level"]

print("level:=========",level)

time = ds.variables["time"]

print("time:========= ",time)

r = ds.variables["r"]

print("humendad:===== ",r)

leer las dimenciones de las variables

print("las dimenciones variable r es: ", ds.variables['r'].dimensions)
print(r.shape)

dict_keys(['longitude', 'latitude', 'level', 'time', 'r'])
las dimenciones variable r es: ('time', 'level', 'latitude', 'longitude')
(53, 8, 241, 480)

crear la proyeccion con cartopy y matplotlib

ax = plt.axes(projection=ccrs.PlateCarree())

ax.coastlines()

plotear variables en el mapa

r_ds = ds.variables['r'][0, :, :, :]

print(r_ds)

plt.contourf(lon, lat, r_ds, transform=ccrs.PlateCarree())
ax.coastlines()
plt.show()

#

Error message

Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/IPython/core/interactiveshell.py", line 3331, in run_code
exec(code_obj, self.user_global_ns, self.user_ns)
File "<ipython-input-2-403ea023eab8>", line 1, in <module>
runfile('/home/leo/Documentos/Universidad/Trabajo_de_investigación/PerfilesVerticalesContaminantesAtmosfera/Datos/readNetdcf42003_2020CMAS.py', wdir='/home/leo/Documentos/Universidad/Trabajo_de_investigación/PerfilesVerticalesContaminantesAtmosfera/Datos')
File "/snap/pycharm-professional/230/plugins/python/helpers/pydev/_pydev_bundle/pydev_umd.py", line 197, in runfile
pydev_imports.execfile(filename, global_vars, local_vars) # execute the script
File "/snap/pycharm-professional/230/plugins/python/helpers/pydev/_pydev_imps/_pydev_execfile.py", line 18, in execfile
exec(compile(contents+"\n", file, 'exec'), glob, loc)
File"/home/leo/Documentos/Universidad/Trabajo_de_investigación/PerfilesVerticalesContaminantesAtmosfera/Datos/readNetdcf42003_2020CMAS.py", line 65, in <module>
plt.contourf(lon, lat, r_ds, transform=ccrs.PlateCarree())
File "/home/leo/.local/lib/python3.8/site-packages/matplotlib/pyplot.py", line 2577, in contourf
ret = gca().contourf(
File "/home/leo/.local/lib/python3.8/site-packages/cartopy/mpl/geoaxes.py", line 321, in wrapper
return func(self, args, **kwargs)
File "/home/leo/.local/lib/python3.8/site-packages/cartopy/mpl/geoaxes.py", line 1586, in contourf
result = matplotlib.axes.Axes.contourf(self,
args, **kwargs)
File "/home/leo/.local/lib/python3.8/site-packages/matplotlib/
init.py", line 1447, in inner
return func(ax, map(sanitize_sequence, args), **kwargs)
File "/home/leo/.local/lib/python3.8/site-packages/matplotlib/axes/_axes.py", line 6335, in contourf
contours = mcontour.QuadContourSet(self,
args, **kwargs)
File "/home/leo/.local/lib/python3.8/site-packages/matplotlib/contour.py", line 816, in
init
kwargs = self._process_args(args, *kwargs)
File "/home/leo/.local/lib/python3.8/site-packages/matplotlib/contour.py", line 1430, in _process_args
x, y, z = self._contour_args(args, kwargs)
File "/home/leo/.local/lib/python3.8/site-packages/matplotlib/contour.py", line 1488, in _contour_args
x, y, z = self._check_xyz(args[:3], kwargs)
File "/home/leo/.local/lib/python3.8/site-packages/matplotlib/contour.py", line 1514, in _check_xyz
x = np.asarray(x, dtype=np.float64)
File "/usr/local/lib/python3.8/dist-packages/numpy/core/_asarray.py", line 102, in asarray
return array(a, dtype, copy=False, order=order)
TypeError:
array__() takes no arguments (1 given)

Rei 머호
@rei_wu:matrix.org
[m]

techprog:matrix.org

Elliott Sales de Andrade
@QuLogic
@leonardojimenez1990 it seems like that's a netcdf+matplotlib problem, and not specific to cartopy
Are you able to plot it in pure Matplotlib?
Greg Lucas
@greglucas
Anyone against me tagging a release candidate for 0.19? There hasn't been a whole lot of activity lately other than not being able to build with PROJ8 :( but I feel like that will be a bit of an overhaul to rework and probably better to do for another release rather than pushing this off longer. Thoughts/ping: @QuLogic or @dopplershift and any other maintainers
Elliott Sales de Andrade
@QuLogic
I'm trying to review my backlog of PRs
One thing that needs fixing is the tests with the latest mpl rc
but that doesn't hold up another rc