Displaying labels on points in Jupyter notebook widget map?
260
3
03-17-2025 04:20 PM
by
Hi! I'm trying to get labels working in my Jupyter notebook map, and I've tried everything I can think of.
Here's my code:
from arcgis.geometry import Point
from arcgis.features import Feature, FeatureSet, FeatureCollection, FeatureLayer, FeatureLayerCollection
import arcgis.mapping
from ipywidgets import *
name_coords_matches_list = [('American Canyon', 38.1743, -122.2583)]
map_widget = gis.map("Napa County, California, USA")
point_features = []
for point_datum in name_coords_matches_list:
point_geometry = Point({"x": float(point_datum[2]), "y": float(point_datum[1]), "spatialReference": {"wkid": 4326}}) # Create a dict for the long/lat point
point_attributes = {"name": point_datum[0]} # Create a dict for the 'name' attribute
point_feature = Feature(geometry=point_geometry, attributes=point_attributes) # Create the feature
point_features.append(point_feature) # Add the feature to the point_features list
feature_set = FeatureSet(point_features) # Create the feature set of all point features
feature_collection = FeatureCollection.from_featureset(feature_set) # Create a feature collection from the feature set
feature_collection.properties["layers"][0]['layerDefinition']['drawingInfo']['renderer']['symbol']['color'] = [255, 255, 0, 127] # Make the point symbols translucent yellow
labeling_info = [{
"labelExpression": "[name]", "labelExpressionInfo": {"expression": "$feature.name"},
"maxScale": 0, "minScale": 0, "symbol": {
"color": [104, 104, 104, 255], "type": "esriTS",
"font": {"decoration": "none", "family": "Arial", "size": 8, "style": "normal", "weight": "bold"}
}
}]
feature_collection.properties["layers"][0]['layerDefinition']['drawingInfo']['labelingInfo'] = labeling_info # Add the labeling info
feature_collection.properties["layers"][0]['layerDefinition']['showLabels'] = True # Turn on labels
map_widget.add_layer(feature_collection) # Add the feature collection as a map layer
map_widget.layout=Layout(flex='1 1', padding='0px', height='1024px') # Change the dimensions of the map widget in Jupyter
map_widget # Display the map widget
The point is displayed, and its color is right, but it is missing the label 🤔
Here's the JSON from printing feature_collection.properties:
{
"layers": [
{
"featureSet": {
"geometryType": "esriGeometryPoint",
"features": [
{
"geometry": {
"x": -122.2583,
"y": 38.1743,
"spatialReference": {
"wkid": 4326
}
},
"attributes": {
"name": "American Canyon",
"OBJECTID": 1
}
},
]
},
"layerDefinition": {
"geometryType": "esriGeometryPoint",
"fields": [
{
"name": "name",
"alias": "name",
"type": "esriFieldTypeString",
"sqlType": "sqlTypeOther"
},
{
"name": "OBJECTID",
"type": "esriFieldTypeOID",
"alias": "OBJECTID",
"sqlType": "sqlTypeOther"
}
],
"spatialReference": {
"wkid": 4326
},
"objectIdField": "OBJECTID",
"type": "Feature Layer",
"name": "a450db",
"id": 0,
"drawingInfo": {
"renderer": {
"type": "simple",
"symbol": {
"type": "esriSMS",
"color": [
255,
255,
0,
127
],
"angle": 0,
"xoffset": 0,
"yoffset": 0,
"size": 12,
"style": "esriSMSCircle",
"outline": {
"type": "esriSLS",
"color": [
0,
0,
0,
255
],
"width": 0.75,
"style": "esriSLSSolid"
}
}
},
"labelingInfo": [
{
"labelExpression": "[name]",
"labelExpressionInfo": {
"expression": "$feature.name"
},
"maxScale": 0,
"minScale": 0,
"symbol": {
"color": [
104,
104,
104,
255
],
"type": "esriTS",
"font": {
"decoration": "none",
"family": "Arial",
"size": 8,
"style": "normal",
"weight": "bold"
}
}
}
]
},
"showLabels": true
}
}
]
}
Any help would be appreciated. Thanks in advance!
Brian
by
Clubdebambos
I was able to get this to work using the ArcGIS API for Python version 2.4.0 as per below.
from arcgis.gis import GIS
from arcgis.geometry import Point
from arcgis.features import Feature, FeatureSet, FeatureCollection, FeatureLayer, FeatureLayerCollection
import arcgis.map
from ipywidgets import *
gis = GIS("home")
name_coords_matches_list = [('American Canyon', 38.1743, -122.2583)]
map_widget = gis.map("Napa County, California, USA")
point_features = []
for point_datum in name_coords_matches_list:
point_geometry = Point({"x": float(point_datum[2]), "y": float(point_datum[1]), "spatialReference": {"wkid": 4326}}) # Create a dict for the long/lat point
point_attributes = {"name": point_datum[0]} # Create a dict for the 'name' attribute
point_feature = Feature(geometry=point_geometry, attributes=point_attributes) # Create the feature
point_features.append(point_feature) # Add the feature to the point_features list
feature_set = FeatureSet(point_features) # Create the feature set of all point features
feature_collection = FeatureCollection.from_featureset(feature_set) # Create a feature collection from the feature set
feature_collection.properties["layers"][0]['layerDefinition']['drawingInfo']['renderer']['symbol']['color'] = [255, 255, 0, 127] # Make the point symbols translucent yellow
labeling_info = [{
"labelExpression": "[name]", "labelExpressionInfo": {"expression": "$feature.name"},
"maxScale": 0, "minScale": 0, "symbol": {
"color": [104, 104, 104, 255], "type": "esriTS",
"font": {"decoration": "none", "family": "Arial", "size": 8, "style": "normal", "weight": "bold"}
}
}]
map_widget.content.add(feature_collection) # Add the feature collection as a map layer
options_dict = {
"showLabels" : True,
"layerDefinition" : {
"drawingInfo" : {
"labelingInfo" : labeling_info
}
}
}
map_widget.content.update_layer(
index=0,
options=options_dict
)
map_widget
If bound to using 2.3.0 or previous, you can try the following (I have no way of testing)
Follow the same as above with exception of the below...
map_widget.add_layer(feature_collection) # Add the feature collection as a map layer
layer = map_widget.layers[0]
map_widget.update_drawing_info(
layer = layer,
label_info = labeling_info,
show_labels = True
)
map_widget
Please let us know if either of those work for you.
All the best,
Glen
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