def test_cube_coords_uncorr_slicing(self, tmpdir):
# Regression test for a bug that occurred with coordinate formatting if
# some dimensions were uncorrelated and sliced out.
wcs = WCS(self.cube_header)
fig = plt.figure(figsize=(4, 4))
canvas = fig.canvas
ax = WCSAxes(fig, [0.1, 0.1, 0.8, 0.8], wcs=wcs, slices=('x', 'y', 2))
fig.add_axes(ax)
# On some systems, fig.canvas.draw is not enough to force a draw, so we
# save to a temporary file.
fig.savefig(tmpdir.join('test.png').strpath)
# Testing default displayed world coordinates
string_world = ax._display_world_coords(0.523412, 0.518311)
assert string_world == '3h26m56.6s 30\xb018\'19\" (world)'
# Test pixel coordinates
event1 = KeyEvent('test_pixel_coords', canvas, 'w')
fig.canvas.key_press_event(event1.key, guiEvent=event1)
string_pixel = ax._display_world_coords(0.523412, 0.523412)
assert string_pixel == "0.523412 0.523412 (pixel)"
def test_cube_coords(self, tmpdir):
wcs = WCS(self.cube_header)
fig = plt.figure(figsize=(4, 4))
canvas = fig.canvas
ax = WCSAxes(fig, [0.1, 0.1, 0.8, 0.8], wcs=wcs, slices=('y', 50, 'x'))
fig.add_axes(ax)
# On some systems, fig.canvas.draw is not enough to force a draw, so we
# save to a temporary file.
fig.savefig(tmpdir.join('test.png').strpath)
# Testing default displayed world coordinates
string_world = ax._display_world_coords(0.523412, 0.518311)
assert string_world == '3h26m52.0s 30\xb037\'17\" 2563 (world)'
# Test pixel coordinates
event1 = KeyEvent('test_pixel_coords', canvas, 'w')
fig.canvas.key_press_event(event1.key, guiEvent=event1)
string_pixel = ax._display_world_coords(0.523412, 0.523412)
assert string_pixel == "0.523412 0.523412 (pixel)"
def test_overlay_coords(self, tmpdir):
wcs = WCS(self.msx_header)
fig = plt.figure(figsize=(4, 4))
canvas = fig.canvas
ax = WCSAxes(fig, [0.1, 0.1, 0.8, 0.8], wcs=wcs)
fig.add_axes(ax)
# On some systems, fig.canvas.draw is not enough to force a draw, so we
# save to a temporary file.
fig.savefig(tmpdir.join('test1.png').strpath)
# Testing default displayed world coordinates
string_world = ax._display_world_coords(0.523412, 0.518311)
assert string_world == '0\xb029\'45" -0\xb029\'20" (world)'
# Test pixel coordinates
event1 = KeyEvent('test_pixel_coords', canvas, 'w')
fig.canvas.key_press_event(event1.key, guiEvent=event1)
string_pixel = ax._display_world_coords(0.523412, 0.523412)
assert string_pixel == "0.523412 0.523412 (pixel)"
event3 = KeyEvent('test_pixel_coords', canvas, 'w')
fig.canvas.key_press_event(event3.key, guiEvent=event3)
# Test that it still displays world coords when there are no overlay coords
string_world2 = ax._display_world_coords(0.523412, 0.518311)
assert string_world2 == '0\xb029\'45" -0\xb029\'20" (world)'
overlay = ax.get_coords_overlay('fk5')
# Regression test for bug that caused format to always be taken from
# main world coordinates.
overlay[0].set_major_formatter('d.ddd')
# On some systems, fig.canvas.draw is not enough to force a draw, so we
# save to a temporary file.
fig.savefig(tmpdir.join('test2.png').strpath)
event4 = KeyEvent('test_pixel_coords', canvas, 'w')
fig.canvas.key_press_event(event4.key, guiEvent=event4)
# Test that it displays the overlay world coordinates
string_world3 = ax._display_world_coords(0.523412, 0.518311)
assert string_world3 == '267.176\xb0 -28\xb045\'56" (world, overlay 1)'
overlay = ax.get_coords_overlay(FK5())
# Regression test for bug that caused format to always be taken from
# main world coordinates.
overlay[0].set_major_formatter('d.ddd')
# On some systems, fig.canvas.draw is not enough to force a draw, so we
# save to a temporary file.
fig.savefig(tmpdir.join('test3.png').strpath)
event5 = KeyEvent('test_pixel_coords', canvas, 'w')
fig.canvas.key_press_event(event4.key, guiEvent=event4)
# Test that it displays the overlay world coordinates
string_world4 = ax._display_world_coords(0.523412, 0.518311)
assert string_world4 == '267.176\xb0 -28\xb045\'56" (world, overlay 2)'
overlay = ax.get_coords_overlay(FK5(equinox=Time("J2030")))
# Regression test for bug that caused format to always be taken from
# main world coordinates.
overlay[0].set_major_formatter('d.ddd')
# On some systems, fig.canvas.draw is not enough to force a draw, so we
# save to a temporary file.
fig.savefig(tmpdir.join('test4.png').strpath)
event6 = KeyEvent('test_pixel_coords', canvas, 'w')
fig.canvas.key_press_event(event5.key, guiEvent=event6)
# Test that it displays the overlay world coordinates
string_world5 = ax._display_world_coords(0.523412, 0.518311)
assert string_world5 == '267.652\xb0 -28\xb046\'23" (world, overlay 3)'
