Python ArrayDataSource.set_data方法代码示例

# 需要导入模块: from chaco.api import ArrayDataSource [as 别名]
# 或者: from chaco.api.ArrayDataSource import set_data [as 别名]
 def recalculate(self):
     if self.data_range is not None:
         low, high = self.data_range.low, self.data_range.high
         x = _xfunc(low, high)
         new_array = p_yes(self.a, self.m, self.k, x)
         ArrayDataSource.set_data(self, new_array)
     else:
         self._data = np.array([], dtype='f')

# 需要导入模块: from chaco.api import ArrayDataSource [as 别名]
# 或者: from chaco.api.ArrayDataSource import set_data [as 别名]
    def test_reverse_construction(self):
        mapper = LinearMapper()
        r = DataRange1D()
        ds = ArrayDataSource()
        ary = array([1,2,3,4,5,6,7])

        mapper.range = r
        mapper.low_pos = 1.0
        mapper.high_pos = 7.0
        r.add(ds)
        ds.set_data(ary)

        self.assertTrue(r.low == 1)
        self.assertTrue(r.high == 7)
        screen_pts = mapper.map_screen(array([1,3,7]))
        self.assertTrue(tuple(screen_pts) == (1.0, 3.0, 7.0))
        return

# 需要导入模块: from chaco.api import ArrayDataSource [as 别名]
# 或者: from chaco.api.ArrayDataSource import set_data [as 别名]
    def test_piecewise_construction(self):
        ary = array([1,2,3,4,5,6,7])
        ds = ArrayDataSource()
        ds.set_data(ary)
        r = DataRange1D()
        r.add(ds)
        self.assert_(r.low_setting == "auto")
        self.assert_(r.high_setting == "auto")
        self.assert_(r.low == 1)
        self.assert_(r.high == 7)

        mapper = LinearMapper()
        mapper.range = r
        mapper.low_pos = 1.0
        mapper.high_pos = 7.0
        screen_pts = mapper.map_screen(array([1,3,7]))
        self.assert_(tuple(screen_pts) == (1.0, 3.0, 7.0))
        return

# 需要导入模块: from chaco.api import ArrayDataSource [as 别名]
# 或者: from chaco.api.ArrayDataSource import set_data [as 别名]
	class PlotterWindow(HasTraits):
		plot = Instance(OverlayPlotContainer)
		timer = Instance(Timer)

		traits_view = View(
			Item('plot',editor=ComponentEditor(),show_label=False),
			width=500,height=500,resizable=True,title="Plotter")

		def __init__(self,data_q,num):
			super(PlotterWindow,self).__init__()

			self.data_q = data_q

			self.x = ArrayDataSource(zeros(num))
			self.y = ArrayDataSource(zeros(num))
			self.v = MultiArrayDataSource(zeros((num,2)))

			xrange = DataRange1D()
			xrange.add(self.x)
			yrange = DataRange1D()
			yrange.add(self.y)

			quiverplot = QuiverPlot(index=self.x,value=self.y,vectors=self.v,
				index_mapper=LinearMapper(range=xrange),
				value_mapper=LinearMapper(range=yrange),
				bgcolor='white')
			add_default_axes(quiverplot)
			add_default_grids(quiverplot)

			quiverplot.tools.append(PanTool(quiverplot,constrain_key='shift'))
			quiverplot.overlays.append(ZoomTool(quiverplot))

			self.plot = OverlayPlotContainer(quiverplot, padding=50)
			self.timer = Timer(50.0, self.onTimer)

			self.configure_traits()

		def onTimer(self,*args):
			d = self.data_q.get()

			self.x.set_data(d[0])
			self.y.set_data(d[1])
			self.v.set_data(d[2])

# 需要导入模块: from chaco.api import ArrayDataSource [as 别名]
# 或者: from chaco.api.ArrayDataSource import set_data [as 别名]
class ArrayDataSourceTestCase(UnittestTools, unittest.TestCase):

    def setUp(self):
        self.myarray = arange(10)
        self.mymask = array([i % 2 for i in self.myarray], dtype=bool)
        self.data_source = ArrayDataSource(self.myarray)

    def test_init_defaults(self):
        data_source = ArrayDataSource()
        assert_array_equal(data_source._data, [])
        self.assertEqual(data_source.value_dimension, "scalar")
        self.assertEqual(data_source.index_dimension, "scalar")
        self.assertEqual(data_source.sort_order, "none")
        self.assertFalse(data_source.is_masked())
        self.assertEqual(data_source.persist_data, True)

    def test_basic_setup(self):
        assert_array_equal(self.myarray, self.data_source._data)
        self.assertEqual(self.data_source.value_dimension, "scalar")
        self.assertEqual(self.data_source.sort_order, "none")
        self.assertFalse(self.data_source.is_masked())

    def test_set_data(self):
        new_array = arange(0, 20, 2)

        with self.assertTraitChanges(self.data_source, 'data_changed',
                                     count=1):
            self.data_source.set_data(new_array)

        assert_array_equal(new_array, self.data_source._data)
        self.assertEqual(self.data_source.get_bounds(), (0, 18))
        self.assertEqual(self.data_source.sort_order, "none")

    def test_set_data_ordered(self):
        new_array = arange(20, 0, -2)

        with self.assertTraitChanges(self.data_source, 'data_changed',
                                     count=1):
            self.data_source.set_data(new_array, sort_order='descending')

        assert_array_equal(new_array, self.data_source._data)
        self.assertEqual(self.data_source.get_bounds(), (2, 20))
        self.assertEqual(self.data_source.sort_order, "descending")

    def test_set_mask(self):
        with self.assertTraitChanges(self.data_source, 'data_changed',
                                     count=1):
            self.data_source.set_mask(self.mymask)

        assert_array_equal(self.myarray, self.data_source._data)
        assert_array_equal(self.mymask, self.data_source._cached_mask)
        self.assertTrue(self.data_source.is_masked())
        self.assertEqual(self.data_source.get_bounds(), (0, 9))

    def test_remove_mask(self):
        self.data_source.set_mask(self.mymask)
        self.assertTrue(self.data_source.is_masked())

        with self.assertTraitChanges(self.data_source, 'data_changed',
                                     count=1):
            self.data_source.remove_mask()

        assert_array_equal(self.myarray, self.data_source._data)
        self.assertIsNone(self.data_source._cached_mask, None)
        self.assertFalse(self.data_source.is_masked())
        self.assertEqual(self.data_source.get_bounds(), (0, 9))

    def test_get_data(self):
        assert_array_equal(self.myarray, self.data_source.get_data())

    def test_get_data_no_data(self):
        data_source = ArrayDataSource(None)

        assert_array_equal(data_source.get_data(), 0.0)

    def test_get_data_mask(self):
        self.data_source.set_mask(self.mymask)

        data, mask = self.data_source.get_data_mask()
        assert_array_equal(data, self.myarray)
        assert_array_equal(mask, self.mymask)

    @unittest.skip('get_data_mask() fails in this case')
    def test_get_data_mask_no_data(self):
        data_source = ArrayDataSource(None)

        data, mask = data_source.get_data_mask()
        assert_array_equal(data, 0.0)
        assert_array_equal(mask, True)

    def test_get_data_mask_no_mask(self):
        data, mask = self.data_source.get_data_mask()
        assert_array_equal(data, self.myarray)
        assert_array_equal(mask, ones(shape=10, dtype=bool))

    def test_bounds(self):
        # ascending
        bounds = self.data_source.get_bounds()
        self.assertEqual(bounds, (0, 9))

#.........这里部分代码省略.........