fig.coast() with just dcw kwarg fails #903
Description
Description of the problem
Using fig.coast(dcw=...) fails, asking for additional kwargs. I have to add another kwarg, like water='white', to get things to plot. I believe that dcw alone should be enough.
Full code that generated the error
import pygmt
fig = pygmt.Figure()
fig.coast(region='US', projection='S232.7435/90/8i', frame=['af', 'EWSn'], dcw='US+gred')
fig.show()Expected output
Full error message
---------------------------------------------------------------------------
GMTInvalidInput Traceback (most recent call last)
<ipython-input-10-bd3570a700d7> in <module>
2
3 fig = pygmt.Figure()
----> 4 fig.coast(region='US', projection='S232.7435/90/8i', frame=['af', 'EWSn'], dcw='US+gred')
5 fig.show()
/opt/miniconda3/envs/roses/lib/python3.7/site-packages/pygmt/helpers/decorators.py in new_module(*args, **kwargs)
279 if alias in kwargs:
280 kwargs[arg] = kwargs.pop(alias)
--> 281 return module_func(*args, **kwargs)
282
283 new_module.aliases = aliases
/opt/miniconda3/envs/roses/lib/python3.7/site-packages/pygmt/helpers/decorators.py in new_module(*args, **kwargs)
423 kwargs[arg] = separators[fmt].join(f"{item}" for item in value)
424 # Execute the original function and return its output
--> 425 return module_func(*args, **kwargs)
426
427 return new_module
/opt/miniconda3/envs/roses/lib/python3.7/site-packages/pygmt/src/coast.py in coast(self, **kwargs)
191 raise GMTInvalidInput(
192 """At least one of the following arguments must be specified:
--> 193 lakes, land, water, rivers, borders, Q, or shorelines"""
194 )
195 with Session() as lib:
GMTInvalidInput: At least one of the following arguments must be specified:
lakes, land, water, rivers, borders, Q, or shorelines
System information
Please paste the output of python -c "import pygmt; pygmt.show_versions()":
PyGMT information:
version: v0.0.0
System information:
python: 3.7.9 | packaged by conda-forge | (default, Feb 13 2021, 19:53:10) [Clang 11.0.1 ]
executable: /opt/miniconda3/envs/roses/bin/python
machine: Darwin-20.3.0-x86_64-i386-64bit
Dependency information:
numpy: 1.16.2
pandas: 1.1.5
xarray: 0.15.0
netCDF4: 1.5.3
packaging: 20.9
ghostscript: 9.53.3
gmt: 6.1.1
GMT library information:
binary dir: /opt/miniconda3/envs/roses/bin
cores: 8
grid layout: rows
library path: /opt/miniconda3/envs/roses/lib/libgmt.dylib
padding: 2
plugin dir: /opt/miniconda3/envs/roses/lib/gmt/plugins
share dir: /opt/miniconda3/envs/roses/share/gmt
version: 6.1.1