def test_latex_format(self):
fl = AngleFormatterLocator(number=5, format="dd:mm:ss")
assert fl.formatter([15.392231] * u.degree,
None)[0] == six.u('15\xb023\'32"')
from ..rc_utils import rc_context
with rc_context(rc={'text.usetex': True}):
assert fl.formatter([15.392231] * u.degree,
None)[0] == "15$^\circ$23'32\""
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 == six.u('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 == six.u('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.dddd')
# 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 == six.u('267.1757 -28\xb045\'56" (world, overlay 1)')
def formatter(self, values, spacing):
if not isinstance(values, u.Quantity) and values is not None:
raise TypeError("values should be a Quantities array")
if len(values) > 0:
if self.format is None:
spacing = spacing.to(u.arcsec).value
if spacing > 3600:
fields = 1
precision = 0
elif spacing > 60:
fields = 2
precision = 0
elif spacing > 1:
fields = 3
precision = 0
else:
fields = 3
precision = -int(np.floor(np.log10(spacing)))
decimal = False
unit = u.degree
else:
fields = self._fields
precision = self._precision
decimal = self._decimal
unit = self._unit
if decimal:
sep = None
elif self._sep is not None:
sep = self._sep
else:
if unit == u.degree:
if rcParams['text.usetex']:
deg = r'$^\circ$'
else:
deg = six.u('\xb0')
sep = (deg, "'", '"')
else:
sep = ('h', 'm', 's')
angles = Angle(values)
string = angles.to_string(unit=unit,
precision=precision,
decimal=decimal,
fields=fields,
sep=sep).tolist()
return string
else:
return []
def formatter(self, values, spacing):
if not isinstance(values, u.Quantity) and values is not None:
raise TypeError("values should be a Quantities array")
if len(values) > 0:
if self.format is None:
spacing = spacing.to(u.arcsec).value
if spacing > 3600:
fields = 1
precision = 0
elif spacing > 60:
fields = 2
precision = 0
elif spacing > 1:
fields = 3
precision = 0
else:
fields = 3
precision = -int(np.floor(np.log10(spacing)))
decimal = False
unit = u.degree
else:
fields = self._fields
precision = self._precision
decimal = self._decimal
unit = self._unit
if decimal:
sep = None
elif self._sep is not None:
sep = self._sep
else:
if unit == u.degree:
if rcParams['text.usetex']:
deg = r'$^\circ$'
else:
deg = six.u('\xb0')
sep = (deg, "'", '"')
else:
sep = ('h', 'm', 's')
angles = Angle(values)
string = angles.to_string(unit=unit,
precision=precision,
decimal=decimal,
fields=fields,
sep=sep).tolist()
return string
else:
return []
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 == six.u('2563 51\xb043\'01" (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 == six.u('2563 51\xb043\'01" (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)"
1)]
## -- Options for the edit_on_github extension ----------------------------------------
if eval(setup_cfg.get('edit_on_github')):
extensions += ['astropy.sphinx.ext.edit_on_github']
versionmod = __import__(setup_cfg['package_name'] + '.version')
edit_on_github_project = setup_cfg['github_project']
if versionmod.release:
edit_on_github_branch = "v" + versionmod.version
else:
edit_on_github_branch = "master"
edit_on_github_source_root = ""
edit_on_github_doc_root = "docs"
github_issues_url = 'https://github.com/astropy/photutils/issues/'
autodoc_docstring_signature = True
nitpicky = True
nitpick_ignore = []
for line in open('nitpick-exceptions'):
if line.strip() == "" or line.startswith("#"):
continue
dtype, target = line.split(None, 1)
target = target.strip()
nitpick_ignore.append((dtype, six.u(target)))
edit_on_github_skip_regex = '_.*|api/.*'
github_issues_url = 'https://github.com/astropy/astropy/issues/'
# Enable nitpicky mode - which ensures that all references in the docs
# resolve.
nitpicky = True
nitpick_ignore = []
for line in open('nitpick-exceptions'):
if line.strip() == "" or line.startswith("#"):
continue
dtype, target = line.split(None, 1)
target = target.strip()
nitpick_ignore.append((dtype, six.u(target)))
if six.PY2:
nitpick_ignore.extend([('py:obj', six.u('bases'))])
# -- Options for the Sphinx gallery -------------------------------------------
try:
import sphinx_gallery
extensions += ["sphinx_gallery.gen_gallery"]
sphinx_gallery_conf = {
'backreferences_dir': 'generated/modules', # path to store the module using example template
'filename_pattern': '^((?!skip_).)*$', # execute all examples except those that start with "skip_"
'examples_dirs': '..{}examples'.format(os.sep), # path to the examples scripts
'gallery_dirs': 'generated/examples', # path to save gallery generated examples
edit_on_github_skip_regex = '_.*|api/.*'
github_issues_url = 'https://github.com/astropy/astropy/issues/'
# Enable nitpicky mode - which ensures that all references in the docs
# resolve.
nitpicky = True
nitpick_ignore = []
for line in open('nitpick-exceptions'):
if line.strip() == "" or line.startswith("#"):
continue
dtype, target = line.split(None, 1)
target = target.strip()
nitpick_ignore.append((dtype, six.u(target)))
if six.PY2:
nitpick_ignore.extend([('py:obj', six.u('bases'))])
# -- Options for the Sphinx gallery -------------------------------------------
try:
import sphinx_gallery
extensions += ["sphinx_gallery.gen_gallery"]
sphinx_gallery_conf = {
'mod_example_dir': 'generated/modules', # path to store the module using example template
'filename_pattern': '^((?!skip_).)*$', # execute all examples except those that start with "skip_"
'examples_dirs': '..{}examples'.format(os.sep), # path to the examples scripts
'gallery_dirs': 'generated/examples', # path to save gallery generated examples
edit_on_github_source_root = ""
edit_on_github_doc_root = "docs"
github_issues_url = "https://github.com/astropy/photutils/issues/"
autodoc_docstring_signature = True
nitpicky = True
nitpick_ignore = []
for line in open("nitpick-exceptions"):
if line.strip() == "" or line.startswith("#"):
continue
dtype, target = line.split(None, 1)
target = target.strip()
nitpick_ignore.append((dtype, six.u(target)))
# a simple non-configurable extension that generates Rst files from jupyter
# notebooks
def notebooks_to_rst(app):
from glob import glob
try:
# post "big-split", nbconvert is a separate namespace
from nbconvert.nbconvertapp import NbConvertApp
from nbconvert.writers import FilesWriter
from nbconvert.preprocessors import Preprocessor, ExecutePreprocessor, execute
from nbconvert.exporters import RSTExporter
from nbformat import NotebookNode
except ImportError:
def test_latex_format(self):
fl = AngleFormatterLocator(number=5, format="dd:mm:ss")
assert fl.formatter([15.392231] * u.degree, None)[0] == six.u('15\xb023\'32"')
from ..rc_utils import rc_context
with rc_context(rc={'text.usetex': True}):
assert fl.formatter([15.392231] * u.degree, None)[0] == "15$^\circ$23'32\""
# Don't import the module as "version" or it will override the
# "version" configuration parameter
from astropy import version as versionmod
edit_on_github_project = "astropy/astropy"
if versionmod.release:
edit_on_github_branch = "v{0}.{1}.x".format(versionmod.major, versionmod.minor)
else:
edit_on_github_branch = "master"
edit_on_github_source_root = ""
edit_on_github_doc_root = "docs"
github_issues_url = "https://github.com/astropy/astropy/issues/"
# Enable nitpicky mode - which ensures that all references in the docs
# resolve.
nitpicky = True
nitpick_ignore = []
for line in open("nitpick-exceptions"):
if line.strip() == "" or line.startswith("#"):
continue
dtype, target = line.split(None, 1)
target = target.strip()
nitpick_ignore.append((dtype, six.u(target)))
if six.PY2:
nitpick_ignore.extend([("py:obj", six.u("bases"))])
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 == six.u('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 == six.u('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 == six.u(
'267.176 -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 == six.u(
'267.176 -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=event4)
# Test that it displays the overlay world coordinates
string_world5 = ax._display_world_coords(0.523412, 0.518311)
assert string_world5 == six.u(
'267.652 -28\xb046\'23" (world, overlay 3)')
class TestAngleFormatterLocator(object):
def test_no_options(self):
fl = AngleFormatterLocator()
assert fl.values is None
assert fl.number == 5
assert fl.spacing is None
def test_too_many_options(self):
with pytest.raises(ValueError) as exc:
AngleFormatterLocator(values=[1., 2.], number=5)
assert exc.value.args[
0] == "At most one of values/number/spacing can be specifed"
with pytest.raises(ValueError) as exc:
AngleFormatterLocator(values=[1., 2.], spacing=5. * u.deg)
assert exc.value.args[
0] == "At most one of values/number/spacing can be specifed"
with pytest.raises(ValueError) as exc:
AngleFormatterLocator(number=5, spacing=5. * u.deg)
assert exc.value.args[
0] == "At most one of values/number/spacing can be specifed"
with pytest.raises(ValueError) as exc:
AngleFormatterLocator(values=[1., 2.],
number=5,
spacing=5. * u.deg)
assert exc.value.args[
0] == "At most one of values/number/spacing can be specifed"
def test_values(self):
fl = AngleFormatterLocator(values=[0.1, 1., 14.] * u.degree)
assert fl.values.to(u.degree).value.tolist() == [0.1, 1., 14.]
assert fl.number is None
assert fl.spacing is None
values, spacing = fl.locator(34.3, 55.4)
assert_almost_equal(values.to(u.degree).value, [0.1, 1., 14.])
def test_number(self):
fl = AngleFormatterLocator(number=7)
assert fl.values is None
assert fl.number == 7
assert fl.spacing is None
values, spacing = fl.locator(34.3, 55.4)
assert_almost_equal(
values.to(u.degree).value, [35., 40., 45., 50., 55.])
values, spacing = fl.locator(34.3, 36.1)
assert_almost_equal(
values.to(u.degree).value,
[34.5, 34.75, 35., 35.25, 35.5, 35.75, 36.])
fl.format = 'dd'
values, spacing = fl.locator(34.3, 36.1)
assert_almost_equal(values.to(u.degree).value, [35., 36.])
def test_spacing(self):
with pytest.raises(TypeError) as exc:
AngleFormatterLocator(spacing=3.)
assert exc.value.args[
0] == "spacing should be an astropy.units.Quantity instance with units of angle"
fl = AngleFormatterLocator(spacing=3. * u.degree)
assert fl.values is None
assert fl.number is None
assert fl.spacing == 3. * u.degree
values, spacing = fl.locator(34.3, 55.4)
assert_almost_equal(
values.to(u.degree).value, [36., 39., 42., 45., 48., 51., 54.])
fl.spacing = 30. * u.arcmin
values, spacing = fl.locator(34.3, 36.1)
assert_almost_equal(values.to(u.degree).value, [34.5, 35., 35.5, 36.])
fl.format = 'dd'
values, spacing = fl.locator(34.3, 36.1)
assert_almost_equal(values.to(u.degree).value, [35., 36.])
def test_minor_locator(self):
fl = AngleFormatterLocator()
values, spacing = fl.locator(34.3, 55.4)
minor_values = fl.minor_locator(spacing, 5, 34.3, 55.4)
assert_almost_equal(
minor_values.to(u.degree).value, [
36., 37., 38., 39., 41., 42., 43., 44., 46., 47., 48., 49.,
51., 52., 53., 54.
])
minor_values = fl.minor_locator(spacing, 2, 34.3, 55.4)
assert_almost_equal(
minor_values.to(u.degree).value, [37.5, 42.5, 47.5, 52.5])
fl.values = [0.1, 1., 14.] * u.degree
values, spacing = fl.locator(34.3, 36.1)
minor_values = fl.minor_locator(spacing, 2, 34.3, 55.4)
assert_almost_equal(minor_values.to(u.degree).value, [])
@pytest.mark.parametrize(('format', 'string'), [
('dd', six.u('15\xb0')),
('dd:mm', six.u('15\xb024\'')),
('dd:mm:ss', six.u('15\xb023\'32"')),
('dd:mm:ss.s', six.u('15\xb023\'32.0"')),
('dd:mm:ss.ssss', six.u('15\xb023\'32.0316"')),
('hh', '1h'),
('hh:mm', '1h02m'),
('hh:mm:ss', '1h01m34s'),
('hh:mm:ss.s', '1h01m34.1s'),
('hh:mm:ss.ssss', '1h01m34.1354s'),
('d', '15'),
('d.d', '15.4'),
('d.dd', '15.39'),
('d.ddd', '15.392'),
('m', '924'),
('m.m', '923.5'),
('m.mm', '923.53'),
('s', '55412'),
('s.s', '55412.0'),
('s.ss', '55412.03'),
])
def test_format(self, format, string):
fl = AngleFormatterLocator(number=5, format=format)
assert fl.formatter([15.392231] * u.degree, None)[0] == string
@pytest.mark.parametrize(('separator', 'format', 'string'), [
(('deg', "'", '"'), 'dd', '15deg'),
(('deg', "'", '"'), 'dd:mm', '15deg24\''),
(('deg', "'", '"'), 'dd:mm:ss', '15deg23\'32"'),
((':', "-", 's'), 'dd:mm:ss.s', '15:23-32.0s'),
(':', 'dd:mm:ss.s', '15:23:32.0'),
((':', ":", 's'), 'hh', '1:'),
(('-', "-", 's'), 'hh:mm:ss.ssss', '1-01-34.1354s'),
(('d', ":", '"'), 'd', '15'),
(('d', ":", '"'), 'd.d', '15.4'),
])
def test_separator(self, separator, format, string):
fl = AngleFormatterLocator(number=5, format=format)
fl.sep = separator
assert fl.formatter([15.392231] * u.degree, None)[0] == string
def test_latex_format(self):
fl = AngleFormatterLocator(number=5, format="dd:mm:ss")
assert fl.formatter([15.392231] * u.degree,
None)[0] == six.u('15\xb023\'32"')
from ..rc_utils import rc_context
with rc_context(rc={'text.usetex': True}):
assert fl.formatter([15.392231] * u.degree,
None)[0] == "15$^\circ$23'32\""
@pytest.mark.parametrize(('format'),
['x.xxx', 'dd.ss', 'dd:ss', 'mdd:mm:ss'])
def test_invalid_formats(self, format):
fl = AngleFormatterLocator(number=5)
with pytest.raises(ValueError) as exc:
fl.format = format
assert exc.value.args[0] == "Invalid format: " + format
@pytest.mark.parametrize(('format', 'base_spacing'), [
('dd', 1. * u.deg),
('dd:mm', 1. * u.arcmin),
('dd:mm:ss', 1. * u.arcsec),
('dd:mm:ss.ss', 0.01 * u.arcsec),
('hh', 15. * u.deg),
('hh:mm', 15. * u.arcmin),
('hh:mm:ss', 15. * u.arcsec),
('hh:mm:ss.ss', 0.15 * u.arcsec),
('d', 1. * u.deg),
('d.d', 0.1 * u.deg),
('d.dd', 0.01 * u.deg),
('d.ddd', 0.001 * u.deg),
('m', 1. * u.arcmin),
('m.m', 0.1 * u.arcmin),
('m.mm', 0.01 * u.arcmin),
('s', 1. * u.arcsec),
('s.s', 0.1 * u.arcsec),
('s.ss', 0.01 * u.arcsec),
])
def test_base_spacing(self, format, base_spacing):
fl = AngleFormatterLocator(number=5, format=format)
assert fl.base_spacing == base_spacing
def test_incorrect_spacing(self):
fl = AngleFormatterLocator()
fl.spacing = 0.032 * u.deg
fl.format = 'dd:mm:ss'
assert_almost_equal(fl.spacing.to(u.arcsec).value, 115.)
@pytest.mark.parametrize(('spacing', 'string'),
[(2 * u.deg, six.u('15\xb0')),
(2 * u.arcmin, six.u('15\xb024\'')),
(2 * u.arcsec, six.u('15\xb023\'32"')),
(0.1 * u.arcsec, six.u('15\xb023\'32.0"'))])
def test_formatter_no_format(self, spacing, string):
fl = AngleFormatterLocator()
assert fl.formatter([15.392231] * u.degree, spacing)[0] == string
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 == six.u("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 == six.u("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 == six.u("267.176 -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 == six.u("267.176 -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=event4)
# Test that it displays the overlay world coordinates
string_world5 = ax._display_world_coords(0.523412, 0.518311)
assert string_world5 == six.u("267.652 -28\xb046'23\" (world, overlay 3)")