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Integration test for iris.plot.contour with 2d coords. #3189

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DPeterK merged 2 commits into from
Oct 10, 2018
Merged

Integration test for iris.plot.contour with 2d coords. #3189

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Integration test for iris.plot.contour with 2d coords.
pp-mo Oct 5, 2018
d3b07e8
Review changes.
pp-mo Oct 10, 2018
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28 changes: 28 additions & 0 deletions lib/iris/tests/integration/plot/test_plot_2d_coords.py
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Original file line number Diff line number Diff line change
Expand Up @@ -28,8 +28,13 @@

import cartopy.crs as ccrs
import matplotlib.pyplot as plt
import numpy as np

import iris
from iris.analysis.cartography import unrotate_pole
from iris.cube import Cube
from iris.coords import AuxCoord


# Run tests in no graphics mode if matplotlib is not available.
if tests.MPL_AVAILABLE:
Expand Down Expand Up @@ -63,5 +68,28 @@ def test_2d_coord_bounds_northpolarstereo(self):
self.check_graphic()


@tests.skip_plot
class Test2dContour(tests.GraphicsTest):
def test_2d_coords_contour(self):
ny, nx = 4, 6
x1 = np.linspace(-20, 70, nx)
y1 = np.linspace(10, 60, ny)
data = np.zeros((ny, nx))
data.flat[:] = np.arange(nx * ny) % 7
cube = Cube(data, long_name='Odd data')
x2, y2 = np.meshgrid(x1, y1)
true_lons, true_lats = unrotate_pole(x2, y2, -130., 77.)
co_x = AuxCoord(true_lons, standard_name='longitude', units='degrees')
co_y = AuxCoord(true_lats, standard_name='latitude', units='degrees')
cube.add_aux_coord(co_y, (0, 1))
cube.add_aux_coord(co_x, (0, 1))
ax = plt.axes(projection=ccrs.PlateCarree())
qplt.contourf(cube)
ax.coastlines(color='red')
ax.gridlines(draw_labels=True)
ax.set_extent((0, 180, 0, 90))
self.check_graphic()


if __name__ == "__main__":
tests.main()
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