/usr/lib/python2.7/dist-packages/chaco/tests/datarange_2d_test_case.py is in python-chaco 4.5.0-1.
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from numpy import alltrue, arange, array, ravel, transpose, zeros, inf, isinf
from numpy.testing import assert_equal, assert_
from chaco.api import DataRange2D, GridDataSource, PointDataSource
class DataRange2DTestCase(unittest.TestCase):
def test_empty_range(self):
r = DataRange2D()
assert_ary_(r.low,array([-inf,-inf]))
assert_ary_(r.high,array([inf,inf]))
self.assert_(r.low_setting == ('auto','auto'))
self.assert_(r.high_setting == ('auto', 'auto'))
r.low = array([5.0,5.0])
r.high = array([10.0,10.0])
assert_ary_(r.low_setting, array([5.0,5.0]))
assert_ary_(r.high_setting, array([10.0,10.0]))
assert_ary_(r.low,array([5.0,5.0]))
assert_ary_(r.high, array([10.0,10.0]))
return
def test_single_source(self):
r = DataRange2D()
x = arange(10.)
y = arange(0.,100.,10.)
ds = PointDataSource(transpose(array([x,y])), sort_order="none")
r.add(ds)
assert_ary_(r.low, array([0.,0.]))
assert_ary_(r.high, array([9.0,90.0]))
r.low = [3.0,30.0]
r.high = [6.0,60.0]
assert_ary_(r.low_setting, array([3.0,30.0]))
assert_ary_(r.high_setting, array([6.0,60.0]))
assert_ary_(r.low, array([3.0,30.0]))
assert_ary_(r.high, array([6.0,60.0]))
r.refresh()
assert_ary_(r.low_setting, array([3.0,30.0]))
assert_ary_(r.high_setting, array([6.0,60.0]))
assert_ary_(r.low, array([3.0,30.0]))
assert_ary_(r.high, array([6.0,60.0]))
r.low = ('auto', 'auto')
self.assert_(r.low_setting == ('auto', 'auto'))
assert_ary_(r.low, array([0.0,0.0]))
return
def test_constant_values(self):
r = DataRange2D()
ds = PointDataSource(array([[5.0,5.0]]), sort_order="none")
r.add(ds)
# A constant value > 1.0, by default, gets a range that brackets
# it to the nearest power of ten above and below
assert_ary_(r.low, array([1.0,1.0]))
assert_ary_(r.high, array([10.0,10.0]))
r.remove(ds)
ds = PointDataSource(array([[31.4,9.7]]))
r.add(ds)
assert_ary_(r.low, array([10.0,1.0]))
assert_ary_(r.high, array([100.0,10.0]))
r.remove(ds)
ds = PointDataSource(array([[0.125,0.125]]))
r.add(ds)
assert_ary_(r.low, array([0.0, 0.0]))
assert_ary_(r.high, array([0.25, 0.25]))
r.remove(ds)
ds = PointDataSource(array([[-0.125, -0.125]]))
r.add(ds)
assert_ary_(r.low, array([-0.25, -0.25]))
assert_ary_(r.high, array([0.0, 0.0]))
return
def test_multi_source(self):
x = arange(10.)
y = arange(0.,100.,10.)
foo = transpose(array([x,y]))
bar = transpose(array([y,x]))
ds1 = PointDataSource(foo)
ds2 = PointDataSource(bar)
r = DataRange2D(ds1, ds2)
assert_ary_(r.low, [0.0,0.0])
assert_ary_(r.high, [90.,90.])
return
def test_grid_source(self):
test_xd1 = array([1,2,3])
test_yd1 = array([1.5, 0.5, -0.5, -1.5])
test_sort_order1 = ('ascending', 'descending')
test_xd2 = array([0,50,100])
test_yd2 = array([0.5, 0.75, 1])
ds1 = GridDataSource(xdata=test_xd1, ydata=test_yd1,
sort_order=test_sort_order1)
ds2 = GridDataSource(xdata=test_xd2, ydata=test_yd2)
r = DataRange2D()
r.add(ds1)
assert_ary_(r.low, array([1,-1.5]))
assert_ary_(r.high, array([3,1.5]))
r.add(ds2)
assert_ary_(r.low, array([0.0,-1.5]))
assert_ary_(r.high, array([100,1.5]))
r.remove(ds1)
assert_ary_(r.low, array([0,0.5]))
assert_ary_(r.high, array([100,1]))
r.remove(ds2)
assert_ary_(r.low, array([-inf,-inf]))
assert_ary_(r.high, array([inf,inf]))
def test_set_bounds(self):
test_xd = array([-10,10])
test_yd = array([-10,10])
ds = GridDataSource(xdata=test_xd, ydata=test_yd)
r = DataRange2D()
r.set_bounds((-1,-2), (3,4))
assert_ary_(r.low, array([-1,-2]))
assert_ary_(r.high, array([3,4]))
r.add(ds)
assert_ary_(r.low, array([-1,-2]))
r.low_setting = ('auto','auto')
assert_ary_(r.low, array([-10,-10]))
assert_ary_(r.high, array([3,4]))
r.high_setting = ('auto','auto')
assert_ary_(r.low, array([-10,-10]))
assert_ary_(r.high, array([10,10]))
r.set_bounds((-100,-100), (100,100))
assert_ary_(r.low, array([-100,-100]))
assert_ary_(r.high, array([100,100]))
def test_reset_bounds(self):
r = DataRange2D()
low = (13, 42)
high = (1337, 9001)
r.set_bounds(low, high)
self.assertEqual(r.low_setting, low)
self.assertEqual(r.high_setting, high)
r.reset()
self.assertEqual(r.low_setting, ('auto', 'auto'))
self.assertEqual(r.high_setting, ('auto', 'auto'))
self.assertEqual(r.x_range.low_setting, 'auto')
self.assertEqual(r.y_range.low_setting, 'auto')
self.assertEqual(r.x_range.high_setting, 'auto')
self.assertEqual(r.y_range.high_setting, 'auto')
def test_clip_data(self):
r = DataRange2D(low=[2.0,5.0], high=[10.0,8.0])
x= arange(10.0)
y= arange(0.,20.,2.)
ary= transpose(array([x,y]))
assert_equal(r.clip_data(ary) , array([[3.,6.],[4.,8.]]))
r = DataRange2D(low=[10.,10.], high=[20.,20.])
x= arange(10.0,30.,2.)
y= arange(0.,40.,4.)
ary = transpose(array([x,y]))
assert_equal(r.clip_data(ary) , array([[16.,12.],[18.,16.],[20.,20.]]))
assert_equal(r.clip_data(ary[::-1]) , array([[20,20], [18,16], [16,12]]))
return
def test_mask_data(self):
r = DataRange2D(low=[2.0,5.0], high=[10.0,18.0])
x = array([1, 3, 4, 9.8, 10.2, 12])
y = array([5, 3, 7, 12, 18, 6])
ary = transpose(array([x,y]))
assert_equal(r.mask_data(ary) , array([0,0,1,1,0,0], 'b'))
r = DataRange2D(low=[10.,15.], high=[20.,25.])
x = array([5, 10, 15, 20, 25, 30])
y = array([5, 10, 15, 20, 25, 30])
ary = transpose(array([x,y]))
target_mask = array([0,0,1,1,0,0], 'b')
assert_equal(r.mask_data(ary) , target_mask)
assert_equal(r.mask_data(ary[::-1]) , target_mask[::-1])
r = DataRange2D(low=[2.0,5.0], high=[2.5,9.0])
assert_equal(r.mask_data(ary) , zeros(len(ary)))
return
def assert_close_(desired,actual):
diff_allowed = 1e-5
diff = abs(ravel(actual) - ravel(desired))
for d in diff:
if not isinf(d):
assert_(alltrue(d <= diff_allowed))
return
def assert_ary_(desired, actual):
if (desired == 'auto'):
assert_equal(actual, 'auto')
for d in range(len(desired)):
assert_equal(desired[d], actual[d])
return
if __name__ == '__main__':
import nose
nose.run()
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