Step 1. 

click emergency data

https://egis-lacounty.hub.arcgis.com/

 

 

 

 

 

Step 2.  

click point of interest

https://data.lacounty.gov/pages/emergency

Why we need point of interest data ?

User call 911, usually don't know their address, not all police department can track user location by user's cell phone signal. 

User may call or text 911, for example, " I am at motel 6 parking lot, I don't know what street is...."

911 should use "motel 6" to quickly locate user's location. 

 

 

 

Step 3.   

Arcgis REST api endpoint is here

https://data.lacounty.gov/maps/c5a91c789041455485de39a45d0aae0c/about

 

 

 

Step 3.1   

Arcgis REST api endpoint is here

https://services.arcgis.com/RmCCgQtiZLDCtblq/arcgis/rest/services/Points_of_Interest/FeatureServer

 

 

 

 

 

 

Step 4.   

view all layers on map click here

https://data.lacounty.gov/maps/c5a91c789041455485de39a45d0aae0c/about

 

 

 

 

 

Step 5.   

view all layers on map click here

https://www.arcgis.com/home/item.html?id=c5a91c789041455485de39a45d0aae0c

 

 

 

 

 

 

 

 

Step 6.   

all layers is on ESRI map now

https://www.arcgis.com/apps/mapviewer/index.html?layers=c5a91c789041455485de39a45d0aae0c

 

 

 

 

 

 

 

Step 7.   

all layers is on Google map with Street view is always on, click here

https://transparentgov.net/json2tree/esri/server/folder2.html?org=https%3A%2F%2Fservices.arcgis.com%2FRmCCgQtiZLDCtblq%2Farcgis%2Frest%2Fservices%2FPoints_of_Interest%2FFeatureServer&url=https%3A%2F%2Fservices.arcgis.com%2FRmCCgQtiZLDCtblq%2Farcgis%2Frest%2Fservices%2FPoints_of_Interest%2FFeatureServer&arcgis_online_token=&select_folder=1&select_folder_text=Points_of_Interest+%3Csup%3EMapServer%3C%2Fsup%3E&select_layer=5&select_layer_text=5+%26%23x21E2%3B+Public+Safety+%3Csup%3EFeature+Layer%3Csub%3E+esriGeometryPoint%3C%2Fsub%3E%3C%2Fsup%3E

 

 

 

 

Step 8

public safty layer 

https://transparentgov.net/json2tree/datahub.io/embed/google_streetview_fullscreen.html?layer_id=5&layer=Public+Safety&center_lat=33.33946599399052&center_long=-118.3289781221033&center_zoom=20&url=https%3A%2F%2Fservices.arcgis.com%2FRmCCgQtiZLDCtblq%2Farcgis%2Frest%2Fservices%2FPoints_of_Interest%2FFeatureServer&panto=0

 

 

 

 

Step 9

I only want to see police station in public safty layer, use model classified

 

https://transparentgov.net/json2tree/datahub.io/usgs/classify_data.html?backgroundlayerurl=https%3A%2F%2Fservices.arcgis.com%2FRmCCgQtiZLDCtblq%2Farcgis%2Frest%2Fservices%2FPoints_of_Interest%2FFeatureServer%2F5&layer=Public+Safety&_center_zoom=11&_center_lat=33.900231718684985&_center_long=-118.20077310082303&select_field=2&select_fieldvalue=1&distinctorgroupby=groupby

 

 

Step 9.1

use model classified

 

 

 

 

 

 

 

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