shyft.dashboard.maps.map_viewer

Classes

MapViewer(*, base_map[, width, height, ...])

Backend for plots of Maps with custom layers

class shyft.dashboard.maps.map_viewer.MapViewer(*, base_map: BaseMap, width: int = 300, height: int = 300, extent_padding: float = 0)

Bases: object

Backend for plots of Maps with custom layers

Examples

from statkraft.bokeh.maps.map_viewer import MapViewer

from statkraft.bokeh.maps.layer_data import LayerDataHandle

from statkraft.bokeh.maps.map_layer import MapLayer

from statkraft.bokeh.test.maps.test_map_fixtures import basemap_factory

# initialisation

base_map = basemap_factory()

# create map viewer

map_viewer = MapViewer(width=300, height=300, base_map=base_map, extent_padding=10)

# add layer

layer1 = MapLayer(map_viewer=map_viewer, name=’first layer’, layer_type=LayerType.POINT,

glyph_fixed_kwargs={‘radius’: 5},

glyph_variable_kwargs={‘x’: ‘x’, ‘y’: ‘y’},

)

# update the data with layer_data_handle

min_x = 26621 + 22373*0.5 + 50

min_y = 6599653 + 18731*0.5 + 50

max_x = 26621 + 22373*0.5 + 100

max_y = 6599653 + 18731*0.5 + 100

updated_data = {‘x’: [min_x, max_x],

‘y’: [min_y, max_y]}

layer_data_handle = LayerDataHandle(map_layer=layer1, data=updated_data)

map_viewer.receive_layer_data_handles([layer_data_handle])

__init__(*, base_map: BaseMap, width: int = 300, height: int = 300, extent_padding: float = 0) → None

MapViewer Backend for plots of Maps with custom layers

Parameters:

• base_map – BaseMap instance to use in the back ground

• width – with of the figure

• height – height of the figure

• extent_padding – extra padding for the axis, when snapping to all objects in layers

add_layer(map_layer: MapLayer) → Tuple[Renderer, HoverTool]

Function to add a new layer to the Map This is called from the Layer constructor

update_axes() → None

This function updates the figure axis based on layer bbox