def test_open_geotiff(self):
"""Test to open a GeoTiff file"""
ds_ref = psyd.open_dataset(bt.get_file('test-t2m-u-v.nc'))
ds_tiff = psyd.open_dataset(
bt.get_file('test-t2m-1979-01-31T18-00-00.tif'), engine='gdal')
self.assertListEqual(ds_tiff.Band1.values.tolist(),
ds_ref.isel(time=0, lev=0).t2m.values.tolist())
def test_idims(self):
ds = psyd.open_dataset(os.path.join(bt.test_dir, 'test-t2m-u-v.nc'))
arr = psyd.InteractiveArray(ds.t2m[1:, 3], base=ds)
dims = arr.idims
for dim in ['time', 'lev', 'lat', 'lon']:
self.assertEqual(
psyd.safe_list(ds[dim][dims[dim]]),
psyd.safe_list(arr.coords[dim]),
msg="Slice %s for dimension %s is wrong!" % (dims[dim], dim))
def test_open_mf_geotiff(self):
"""Test to open multiple GeoTiff files and extract the time from the
file name"""
ds_ref = psyd.open_dataset(bt.get_file('test-t2m-u-v.nc'))
ds_tiff = psyd.open_mfdataset(bt.get_file('test-t2m-*.tif'),
engine='gdal',
t_format='test-t2m-%Y-%m-%dT%H-%M-%S')
self.assertListEqual(
ds_ref.isel(time=[0, 1], lev=0).t2m.values.tolist(),
ds_tiff.Band1.values.tolist())
self.assertListEqual(
pd.to_datetime(ds_tiff.time.values).tolist(),
pd.to_datetime(ds_ref.time[:2].values).tolist())
def _test_coord(self, func_name, name, uname=None, name2d=False,
circ_name=None):
def check_ds(name):
self.assertEqual(getattr(d, func_name)(ds.t2m).name, name)
if name2d:
self.assertEqual(getattr(d, func_name)(ds.t2m_2d).name, name)
else:
self.assertIsNone(getattr(d, func_name)(ds.t2m_2d))
uname = uname or name
circ_name = circ_name or name
ds = psyd.open_dataset(os.path.join(bt.test_dir, 'test-t2m-u-v.nc'))
d = psyd.CFDecoder(ds)
check_ds(name)
ds.close()
ds = psyd.open_dataset(os.path.join(bt.test_dir, 'icon_test.nc'))
d = psyd.CFDecoder(ds)
check_ds(uname)
ds.close()
ds = psyd.open_dataset(
os.path.join(bt.test_dir, 'circumpolar_test.nc'))
d = psyd.CFDecoder(ds)
check_ds(circ_name)
ds.close()
def create_screenshot(
code: str,
output: str,
make_plot: bool = False,
enable: bool = None,
plotmethod: str = "mapplot",
minwidth=None,
generate=rebuild_screenshots,
) -> str:
"""Generate a screenshot of the GUI."""
from PyQt5.QtWidgets import QApplication, QSizePolicy # pylint: disable=no-name-in-module
from psy_view.ds_widget import DatasetWidget
from psyplot.data import open_dataset
output = osp.join("_static", output)
if on_rtd:
return output
app = QApplication.instance()
if app is None:
app = QApplication([])
if not generate and osp.exists(output):
return output
ds_widget = DatasetWidget(open_dataset(osp.join(confdir, "demo.nc")))
ds_widget.plotmethod = plotmethod
if make_plot:
ds_widget.variable_buttons["t2m"].click()
if minwidth:
ds_widget.setMinimumWidth(minwidth)
options = {"ds_widget": ds_widget}
exec("w = " + code, options)
w = options['w']
if enable is not None:
w.setEnabled(enable)
w.setSizePolicy(QSizePolicy.Maximum, QSizePolicy.Maximum)
ds_widget.show() # to make sure we can see everything
w.grab().save(osp.join(confdir, output))
ds_widget.close_sp()
ds_widget.close()
return output
def load_mask(self, data, value):
if isinstance(value, str) and value in data.psy.base:
mask = data.psy.base[value]
if not set(mask.dims).intersection(data.dims):
raise ValueError("No intersection between dimensions of mask "
f"{value}: {mask.dims}, and the data: "
f"{data.dims}")
elif isinstance(value, str):
try:
mask = open_dataset(value)
except Exception:
raise ValueError(
f"{value} is not in the base dataset of "
f"{data.psy.arr_name} and could not be loaded with "
f"psy.open_dataset({repr(value)})")
else:
available_vars = [
v for v in mask
if set(mask[v].dims).intersection(data.dims)
]
if not available_vars:
raise ValueError(f"No variable in {value} has an overlap "
f"with the data dimensions {data.dims}")
else:
mask = mask[available_vars[0]]
else:
mask = value
base_var = next(data.psy.iter_base_variables)
# aggregate mask over dimensions that are not in the base variable
dims2agg = set(mask.dims).difference(set(base_var.dims))
if dims2agg:
mask = mask.any(list(dims2agg))
# select idims of mask
idims = {
d: sl
for d, sl in data.psy.idims.items()
if d in mask.dims and d not in data.dims
}
if idims:
mask = mask.isel(**idims)
return mask
def test_get_enhanced_attrs_01_arr(self):
"""Test the :meth:`psyplot.plotter.Plotter.get_enhanced_attrs` method
"""
ds = psyd.open_dataset(bt.get_file('test-t2m-u-v.nc'))
plotter = TestPlotter(ds.t2m)
attrs = ds.t2m.attrs.copy()
for key, val in ds.lon.attrs.items():
attrs['x' + key] = val
for key, val in ds.lat.attrs.items():
attrs['y' + key] = val
for key, val in ds.lev.attrs.items():
attrs['z' + key] = val
for key, val in ds.time.attrs.items():
attrs['t' + key] = val
attrs['xname'] = 'lon'
attrs['yname'] = 'lat'
attrs['zname'] = 'lev'
attrs['tname'] = 'time'
attrs['name'] = 't2m'
self.assertEqual(dict(plotter.get_enhanced_attrs(plotter.plot_data)),
dict(attrs))
def test_get_enhanced_attrs_02_list(self):
"""Test the :meth:`psyplot.plotter.Plotter.get_enhanced_attrs` method
"""
ds = psyd.open_dataset(bt.get_file('test-t2m-u-v.nc'))
plotter = TestPlotter(
psyd.InteractiveList(
ds.psy.create_list(name=['t2m', 'u'], x=0, t=0)))
attrs = {}
for key, val in ds.t2m.attrs.items():
attrs['t2m' + key] = val
for key, val in ds.u.attrs.items():
attrs['u' + key] = val
for key, val in ds.lon.attrs.items():
attrs['x' + key] = val
for key, val in ds.lat.attrs.items():
attrs['y' + key] = val
attrs['x' + key] = val # overwrite the longitude information
# the plot_data has priority over the base variable, therefore we
# the plotter should replace the y information with the z information
for key, val in ds.lev.attrs.items():
attrs['z' + key] = val
attrs['y' + key] = val # overwrite the latitude information
for key, val in ds.time.attrs.items():
attrs['t' + key] = val
for key in set(ds.t2m.attrs) & set(ds.u.attrs):
if ds.t2m.attrs[key] == ds.u.attrs[key]:
attrs[key] = ds.t2m.attrs[key]
attrs['zname'] = attrs['yname'] = 'lev'
attrs['xname'] = 'lat'
attrs['tname'] = 'time'
attrs['lon'] = attrs['x'] = ds.lon.values[0]
attrs['time'] = attrs['t'] = pd.to_datetime(
ds.time.values[0]).isoformat()
self.maxDiff = None
self.assertEqual(dict(plotter.get_enhanced_attrs(plotter.plot_data)),
dict(attrs))
def test_ds(test_file):
import psyplot.data as psyd
with psyd.open_dataset(test_file) as ds:
yield ds
def _grid_ds(grid):
ds = psyd.open_dataset(osp.join(bt.test_dir, 'grids', grid + '.nc'))
open_datasets.append(ds)
return ds
def test_ds():
import psyplot.data as psyd
test_file = osp.join(osp.dirname(__file__), '..', 'test-t2m-u-v.nc')
with psyd.open_dataset(test_file) as ds:
yield ds
