topic Re: How to get attributes using GPS coordinate from webmap in ArcGIS API for Python Questions

How to get attributes using GPS coordinate from webmap

AENA — Tue, 07 Nov 2023 03:43:27 GMT

Hi, currently i'm working with webmap and i want to find an attributes in the webmap by using GPS coordinate

output expected :

Location: Jalan Jabatan Perhutanan, Keningau, Bahagian Keningau, 89000, Sabah, MYS
KODDUN: N.04, NAMADUN: TANJONG KAPOR

output that i obtaint :

it print out all the attributes instead of the one that match with coordinate.

Location: Jalan Jabatan Perhutanan, Keningau, Bahagian Keningau, 89000, Sabah, MYS
KODDUN: N.04, NAMADUN: TANJONG KAPOR
KODDUN: N.03, NAMADUN: PITAS
KODDUN: N.05, NAMADUN: MATUNGGONG
KODDUN: N.06, NAMADUN: BANDAU
KODDUN: N.09, NAMADUN: TEMPASUK

my code :

from arcgis.gis import GIS
import arcgis
from arcgis.geometry import Geometry
from arcgis.geocoding import reverse_geocode

gis = GIS()

webmap_item_id = "0c7d9a944a5a476694a2f998d53e3e1e"
webmap_item = gis.content.get(webmap_item_id)
webmap_data = webmap_item.get_data()

longitude = 116.157966
latitude = 5.341622
given_coord = {'x': longitude, 'y': latitude, "spatialReference": {"wkid": 4326}}
point_geom = Geometry(given_coord)

location_details = reverse_geocode([longitude, latitude])
place_name = location_details.get('address', {}).get('LongLabel', 'Unknown Location')
print(f"Location: {place_name}")

if 'operationalLayers' in webmap_data:
for layer in webmap_data['operationalLayers']:
if 'featureCollection' in layer:
for layer_collection in layer['featureCollection']['layers']:
for feature in layer_collection['featureSet']['features']:
attributes = feature['attributes']
geometry = feature['geometry']
koddun = attributes.get("KODDUN")
namadun = attributes.get("NAMADUN")
parlimen = attributes.get("PARLIMEN")

# Fetch GPS coordinates
if 'x' in geometry and 'y' in geometry:
longitude = geometry['x']
latitude = geometry['y']
print(f"KODDUN: {koddun}, NAMADUN: {namadun}, PARLIMEN: {parlimen}")
else:
print(f"KODDUN: {koddun}, NAMADUN: {namadun}")

hope someone can help me because this is my first time using API

Re: How to get attributes using GPS coordinate from webmap

EarlMedina — Mon, 06 Nov 2023 18:22:03 GMT

Hello,

If I understand what you are trying to do correctly, you are quite close and just need to add a geometry function to figure out if the input point is within the geometry. You may use Geometry (which will parse the type for you), but I will use Polygon and Point so it is more explicit what is going on. I'm not sure what the intention was with the else statement, so you may need to adjust further:

from arcgis.gis import GIS import arcgis from arcgis.geometry import Point, Polygon from arcgis.geocoding import reverse_geocode gis = GIS() webmap_item_id = "0c7d9a944a5a476694a2f998d53e3e1e" webmap_item = gis.content.get(webmap_item_id) webmap_data = webmap_item.get_data() longitude = 116.157966 latitude = 5.341622 given_coord = {"x": longitude, "y": latitude, "spatialReference": {"wkid": 4326}} point_geom = Point(given_coord) location_details = reverse_geocode([longitude, latitude]) place_name = location_details.get("address", {}).get("LongLabel", "Unknown Location") print(f"Location: {place_name}") if 'operationalLayers' in webmap_data: for layer in webmap_data['operationalLayers']: if 'featureCollection' in layer: for layer_collection in layer['featureCollection']['layers']: for feature in layer_collection['featureSet']['features']: attributes = feature['attributes'] geometry = feature['geometry'] koddun = attributes.get("KODDUN") namadun = attributes.get("NAMADUN") parlimen = attributes.get("PARLIMEN") # Fetch GPS coordinates if "rings" in geometry: poly_geom = Polygon(geometry) if point_geom.within(poly_geom): print(f"KODDUN: {koddun}, NAMADUN: {namadun}, PARLIMEN: {parlimen}") else: print(f"KODDUN: {koddun}, NAMADUN: {namadun}")

Re: How to get attributes using GPS coordinate from webmap

AENA — Wed, 01 Nov 2023 06:49:22 GMT

Hello, thankyou for the replied.

may I know if you get the expected output?

I've tried to run the code, but seems like it's not working correctly because I only get the location name but not the attributes(KODDUN, NAMADUN).

Re: How to get attributes using GPS coordinate from webmap

EarlMedina — Wed, 01 Nov 2023 13:47:38 GMT

Hey, I get this:

Location: Jalan Jabatan Perhutanan, Keningau, Bahagian Keningau, 89000, Sabah, MYS
KODDUN: N.40, NAMADUN: BINGKOR, PARLIMEN: KENINGAU
KODDUN: N.40, NAMADUN: BINGKOR, PARLIMEN: KENING

Re: How to get attributes using GPS coordinate from webmap

AENA — Mon, 06 Nov 2023 05:29:31 GMT

Hai, I'm sorry if I ask you a lot of question because this is my first time using python API.

I've tried to run the code that you share, but I only get the location name. may I know why?

Re: How to get attributes using GPS coordinate from webmap

AENA — Mon, 06 Nov 2023 04:00:49 GMT

@EarlMedina

@VinceAngelo

can you help me with this one.

Re: How to get attributes using GPS coordinate from webmap

EarlMedina — Mon, 06 Nov 2023 18:23:53 GMT

The only thing that comes to mind is you may be on a differen version of the API? I re-ran the code and came out with the exact same output.

Re: How to get attributes using GPS coordinate from webmap

AENA — Tue, 07 Nov 2023 02:33:00 GMT

may i know what version and platform to run the code that you use ?

Re: How to get attributes using GPS coordinate from webmap

AENA — Wed, 08 Nov 2023 00:37:17 GMT

btw, I'm using google colaboratory to run the code. @EarlMedina

Re: How to get attributes using GPS coordinate from webmap

EarlMedina — Wed, 08 Nov 2023 19:03:50 GMT

2.1.0 is the version, I believe.