def update_hover(self):
if not self.hover_layer:
self.hover_layer = HoverLayer(field_name=self.field_title,
extent=self.map_extent,
is_categorical=self.field
in self.categorical_fields,
agg=self.agg)
self.fig.renderers.append(self.hover_layer.renderer)
self.fig.add_tools(self.hover_layer.tool)
else:
self.hover_layer.is_categorical = self.field in self.categorical_fields
self.hover_layer.extent = self.map_extent
self.hover_layer.agg = self.agg
def create_layout(self):
# create figure
self.x_range = Range1d(start=self.model.map_extent[0],
end=self.model.map_extent[2], bounds=None)
self.y_range = Range1d(start=self.model.map_extent[1],
end=self.model.map_extent[3], bounds=None)
self.fig = Figure(tools='wheel_zoom,pan',
x_range=self.x_range,
lod_threshold=None,
plot_width=self.model.plot_width,
plot_height=self.model.plot_height,
y_range=self.y_range)
self.fig.min_border_top = 0
self.fig.min_border_bottom = 10
self.fig.min_border_left = 0
self.fig.min_border_right = 0
self.fig.axis.visible = False
self.fig.xgrid.grid_line_color = None
self.fig.ygrid.grid_line_color = None
# add tiled basemap
self.tile_source = WMTSTileSource(url=self.model.basemap)
self.tile_renderer = TileRenderer(tile_source=self.tile_source)
self.fig.renderers.append(self.tile_renderer)
# add datashader layer
self.image_source = ImageSource(url=self.model.service_url,
extra_url_vars=self.model.shader_url_vars)
self.image_renderer = DynamicImageRenderer(image_source=self.image_source)
self.fig.renderers.append(self.image_renderer)
# add label layer
self.label_source = WMTSTileSource(url=self.model.labels_url)
self.label_renderer = TileRenderer(tile_source=self.label_source)
self.fig.renderers.append(self.label_renderer)
# Add a hover tool
hover_layer = HoverLayer()
hover_layer.field_name = self.model.field_title
hover_layer.is_categorical = self.model.field in self.model.categorical_fields
self.fig.renderers.append(hover_layer.renderer)
self.fig.add_tools(hover_layer.tool)
self.model.hover_layer = hover_layer
self.model.legend_side_vbox = VBox()
self.model.legend_bottom_vbox = VBox()
# add ui components
controls = []
axes_select = Select.create(name='Axes',
options=self.model.axes)
axes_select.on_change('value', self.on_axes_change)
controls.append(axes_select)
self.field_select = Select.create(name='Field', options=self.model.fields)
self.field_select.on_change('value', self.on_field_change)
controls.append(self.field_select)
self.aggregate_select = Select.create(name='Aggregate',
options=self.model.aggregate_functions)
self.aggregate_select.on_change('value', self.on_aggregate_change)
controls.append(self.aggregate_select)
transfer_select = Select.create(name='Transfer Function',
options=self.model.transfer_functions)
transfer_select.on_change('value', self.on_transfer_function_change)
controls.append(transfer_select)
color_ramp_select = Select.create(name='Color Ramp', options=self.model.color_ramps)
color_ramp_select.on_change('value', self.on_color_ramp_change)
controls.append(color_ramp_select)
spread_size_slider = Slider(title="Spread Size (px)", value=0, start=0,
end=10, step=1)
spread_size_slider.on_change('value', self.on_spread_size_change)
controls.append(spread_size_slider)
hover_size_slider = Slider(title="Hover Size (px)", value=8, start=4,
end=30, step=1)
hover_size_slider.on_change('value', self.on_hover_size_change)
controls.append(hover_size_slider)
controls.append(self.model.legend_side_vbox)
# add map components
basemap_select = Select.create(name='Basemap', value='Imagery',
options=self.model.basemaps)
basemap_select.on_change('value', self.on_basemap_change)
image_opacity_slider = Slider(title="Opacity", value=100, start=0,
end=100, step=1)
image_opacity_slider.on_change('value', self.on_image_opacity_slider_change)
basemap_opacity_slider = Slider(title="Basemap Opacity", value=100, start=0,
end=100, step=1)
basemap_opacity_slider.on_change('value', self.on_basemap_opacity_slider_change)
show_labels_chk = CheckboxGroup(labels=["Show Labels"], active=[0])
show_labels_chk.on_click(self.on_labels_change)
map_controls = [basemap_select, basemap_opacity_slider,
image_opacity_slider, show_labels_chk]
self.controls = VBox(width=200, height=600, children=controls)
self.map_controls = HBox(width=self.fig.plot_width, children=map_controls)
self.map_area = VBox(width=self.fig.plot_width, children=[self.map_controls,
self.fig,
self.model.legend_bottom_vbox])
self.layout = HBox(width=1366, children=[self.controls, self.map_area])
def create_layout(self):
# create figure
self.x_range = Range1d(start=self.model.map_extent[0],
end=self.model.map_extent[2],
bounds=None)
self.y_range = Range1d(start=self.model.map_extent[1],
end=self.model.map_extent[3],
bounds=None)
self.fig = Figure(tools='wheel_zoom,pan',
x_range=self.x_range,
lod_threshold=None,
plot_width=self.model.plot_width,
plot_height=self.model.plot_height,
y_range=self.y_range)
self.fig.min_border_top = 0
self.fig.min_border_bottom = 10
self.fig.min_border_left = 0
self.fig.min_border_right = 0
self.fig.axis.visible = False
self.fig.xgrid.grid_line_color = None
self.fig.ygrid.grid_line_color = None
# add tiled basemap
self.tile_source = WMTSTileSource(url=self.model.basemap)
self.tile_renderer = TileRenderer(tile_source=self.tile_source)
self.fig.renderers.append(self.tile_renderer)
# add datashader layer
self.image_source = ImageSource(
url=self.model.service_url,
extra_url_vars=self.model.shader_url_vars)
self.image_renderer = DynamicImageRenderer(
image_source=self.image_source)
self.fig.renderers.append(self.image_renderer)
# add label layer
self.label_source = WMTSTileSource(url=self.model.labels_url)
self.label_renderer = TileRenderer(tile_source=self.label_source)
self.fig.renderers.append(self.label_renderer)
# Add a hover tool
hover_layer = HoverLayer()
hover_layer.field_name = self.model.field_title
hover_layer.is_categorical = self.model.field in self.model.categorical_fields
self.fig.renderers.append(hover_layer.renderer)
self.fig.add_tools(hover_layer.tool)
self.model.hover_layer = hover_layer
self.model.legend_side_vbox = VBox()
self.model.legend_bottom_vbox = VBox()
# add ui components
controls = []
axes_select = Select.create(name='Axes', options=self.model.axes)
axes_select.on_change('value', self.on_axes_change)
controls.append(axes_select)
self.field_select = Select.create(name='Field',
options=self.model.fields)
self.field_select.on_change('value', self.on_field_change)
controls.append(self.field_select)
self.aggregate_select = Select.create(
name='Aggregate', options=self.model.aggregate_functions)
self.aggregate_select.on_change('value', self.on_aggregate_change)
controls.append(self.aggregate_select)
transfer_select = Select.create(name='Transfer Function',
options=self.model.transfer_functions)
transfer_select.on_change('value', self.on_transfer_function_change)
controls.append(transfer_select)
color_ramp_select = Select.create(name='Color Ramp',
options=self.model.color_ramps)
color_ramp_select.on_change('value', self.on_color_ramp_change)
controls.append(color_ramp_select)
spread_size_slider = Slider(title="Spread Size (px)",
value=0,
start=0,
end=10,
step=1)
spread_size_slider.on_change('value', self.on_spread_size_change)
controls.append(spread_size_slider)
hover_size_slider = Slider(title="Hover Size (px)",
value=8,
start=4,
end=30,
step=1)
hover_size_slider.on_change('value', self.on_hover_size_change)
controls.append(hover_size_slider)
controls.append(self.model.legend_side_vbox)
# add map components
basemap_select = Select.create(name='Basemap',
value='Imagery',
options=self.model.basemaps)
basemap_select.on_change('value', self.on_basemap_change)
image_opacity_slider = Slider(title="Opacity",
value=100,
start=0,
end=100,
step=1)
image_opacity_slider.on_change('value',
self.on_image_opacity_slider_change)
basemap_opacity_slider = Slider(title="Basemap Opacity",
value=100,
start=0,
end=100,
step=1)
basemap_opacity_slider.on_change('value',
self.on_basemap_opacity_slider_change)
show_labels_chk = CheckboxGroup(labels=["Show Labels"], active=[0])
show_labels_chk.on_click(self.on_labels_change)
map_controls = [
basemap_select, basemap_opacity_slider, image_opacity_slider,
show_labels_chk
]
self.controls = VBox(width=200, height=600, children=controls)
self.map_controls = HBox(width=self.fig.plot_width,
children=map_controls)
self.map_area = VBox(width=self.fig.plot_width,
children=[
self.map_controls, self.fig,
self.model.legend_bottom_vbox
])
self.layout = HBox(width=1366, children=[self.controls, self.map_area])