Latest Contributions by JasonWood

‎03-05-2024

I am using view.goTo to go to an array of geometries (which happen to be the same as all the polygons drawn on a graphics layer `graphicsLayerParcelHighlight`) The problem is that if I don't specify a zoom level, it's zoomed in too much. I want to back out around 2 or 3 zoom levels from whatever it would be otherwise. I think I could work out how to expand each of the geometries in the array, but I'm not sure if that's the most sensible way. I'm a beginner. view.whenLayerView(graphicsLayerParcelHighlight).then(() => { view.goTo({ target: parcelGeometryArray, zoom: 16 }); });

‎02-18-2024

I have an ArcGIS Developer account, so I can access a private feature layer in my account by adding it to the scopes on my API Key page. But my client has an ArcGIS Online Account, and the documentation states "API keys cannot be used with ArcGIS Online accounts to access private hosted layer (items) and data services.", so if I understand correctly, that method will not work for them. (And I wouldn't want to use this method in production anyway, since the API Key would provide indefinite access to read the private layer) I first attempted to solve this by getting an authentication token using my Client ID and Client Secret (server side), then passing this to my web application and assigning it to esriConfig.token (right below esriConfig.apiKey), but after removing the scope from the API Key settings, I am no longer able to load the private layer. Console message: "You do not have permissions to access this resource or perform this operation." I know that the token has sufficient privileges because I can put the feature layer URL in a web browser and add "?token=[the token]" and it grants me access. My questions: 1) How do I load a private feature layer using a token? Or is there a better way to load a private feature layer in an ArcGIS Online account (when the user of the web application is not an ArcGIS user)? 2) How can I limit the privileges of the token so it is read only and only for that one feature layer?

‎08-25-2022

I solved this by first using the Buffer geometry service with a negative distance to slightly reduce the size of the polygon. Then I use that result in my query. I would rather get it all done with one API call but if that's impossible, this is a good solution.

‎08-24-2022

Please refer to this query result: https://services2.arcgis.com/EFg39h3DBNzpxORa/ArcGIS/rest/services/Riverview_Zoning/FeatureServer/1/query?where=&objectIds=&time=&geometry=%7B%22rings%22%3A%5B%5B%5B2632869.44998882%2C7451399.60001902%5D%2C%5B2632863.4499898%2C7451422.60001523%5D%2C%5B2632896.49998436%2C7451431.25001381%5D%2C%5B2632902.54998337%2C7451408.30001758%5D%2C%5B2632869.44998882%2C7451399.60001902%5D%5D%5D%7D&geometryType=esriGeometryPolygon&inSR=&spatialRel=esriSpatialRelIntersects&resultType=none&distance=0.0&units=esriSRUnit_Meter&relationParam=&returnGeodetic=false&outFields=*&returnGeometry=false&returnCentroid=false&featureEncoding=esriDefault&multipatchOption=xyFootprint&maxAllowableOffset=&geometryPrecision=&outSR=&defaultSR=&datumTransformation=&applyVCSProjection=false&returnIdsOnly=false&returnUniqueIdsOnly=false&returnCountOnly=false&returnExtentOnly=false&returnQueryGeometry=false&returnDistinctValues=false&cacheHint=false&returnZ=false&returnM=false&returnExceededLimitFeatures=true&sqlFormat=none&f=html As you can see, this returns 2 polygons. The input geometry is represented by the teal rectangle in this picture. The results are the yellow polygon and the blue polygon. I do not want the blue polygon returned as it does not extend inside my input geometry. I tried setting the distance to -1 meters. I thought this would shrink the input geometry by 1m and therefore effectively require any query matches to extend at least 1m inside the provided boundary, but negative numbers in distance do not seem to have any effect. Is there any way to adjust my query so that it excludes such matches?

‎01-11-2021

I have the same problem and I don't understand how the suggested solution relates to the question... Edit: never mind - URL encoding (%26) works for me.

‎09-13-2020

JS & ArcGIS newb here. I have a working example (thanks to this forum) that translates from an alternate spatial reference and plots a point on a map. As you can see from the commented out lines below - I am trying to adapt this to plot a path, but I'm not having luck. <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no"> <title>Basic Map</title> <style> html, body, #viewDiv { padding: 0; margin: 0; height: 100%; width: 100%; } </style> <link rel="stylesheet" href="https://js.arcgis.com/4.15/esri/themes/light/main.css"> <script src="https://js.arcgis.com/4.15/"></script> <script> //Style point var simpleMarkerSymbol = { type: "simple-marker", color: [226, 119, 40], // orange outline: { color: [255, 255, 255], // white width: 1 } }; //style line var simpleLineSymbol = { type: "simple-line", color: [226, 119, 40], // orange width: 2 }; require([ "esri/Map", "esri/views/MapView", "esri/Graphic", "esri/layers/GraphicsLayer", "esri/geometry/Point", "esri/tasks/GeometryService", "esri/tasks/support/ProjectParameters", "esri/geometry/SpatialReference" ], function(Map, MapView, Graphic, GraphicsLayer, Point, GeometryService, ProjectParameters, SpatialReference) { var sr = new SpatialReference({ wkid: 2953 }); var map = new Map({ basemap: "topo-vector" }); var graphicsLayer = new GraphicsLayer(); map.add(graphicsLayer); var point = Point({ type: "point", x: 2637779.94, y: 7418399.63, spatialReference: sr }); var parcelOutline = { type: "polyline", paths: [[2637816.5,7418383.95],[2637788.4,7418370.9],[2637760.75,7418357.95],[2637743.65,7418416.45],[2637799.35,7418440.55],[2637816.5,7418383.95]], spatialReference: sr }; var geomSer = new GeometryService({url: 'https://sampleserver6.arcgisonline.com/arcgis/rest/services/Utilities/Geometry/GeometryServer'}); var params = new ProjectParameters({ //geometries: [point], geometries: [parcelOutline], outSpatialReference: new SpatialReference({wkid:102100}) }); geomSer.project(params).then(function(results){ //var pointGraphic = new Graphic({ // geometry: results[0], // symbol: simpleMarkerSymbol //}); var parcelOutlineGraphic = new Graphic({ geometry: results[0], symbol: simpleLineSymbol }); var view = new MapView({ container: "viewDiv", map: map, center: results[0], zoom: 13 }); //graphicsLayer.add(pointGraphic); graphicsLayer.add(parcelOutlineGraphic); }); }); </script> </head> <body> <div id="viewDiv"></div> </body> </html>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

‎07-02-2020

Perfect. What I ended up doing is specifying the WKID of my coordinates in the request so I don't need to worry about what the layer is using or do any conversions myself: [{ "attributes": { "Operator": "Bob", "Location": 123456789 }, "geometry": { "spatialReference": { "wkid": 4326 }, "x": -79.419591, "y": 43.647131 } }]‍‍‍‍‍‍‍‍‍‍‍‍‍ Thanks again!

‎07-01-2020

I'm close! I added a feature layer to my developer account and setup some fields. I am able to create features with attributes, BUT the point always goes to 0,0 off the coast of Africa... Here is my cURL, which I was expecting to place a point in Toronto: curl -X POST \ -d "f=json" \ -d "token=[theToken]" \ -d "features=[{\"attributes\":{\"Operator\":\"Bob\",\"Location\":123456789},\"geometry\":{\"x\":-79.419591,\"y\":43.647131}}]"‍‍‍‍‍‍‍‍‍‍

‎06-30-2020

Thank you both. It may take me a day or two to get back into this, but even just knowing that what I was calling a "point" is a "feature" in the API gets me miles ahead. I was looking at the docs for "Items" and getting lost! I will come back soon to report my results. Thanks again!

‎06-29-2020

I am a software developer but am new to mapping & ArcGIS. My client created a layer in their ArcGIS Online account using a file import. Each point on the map also includes a number of other fields from the database. Can the REST API be used to individually add a new point or update the information stored in an existing point? Or do I have to reference a URL where the complete table is available to be re-ingested? Thank you!

‎06-23-2020

This is a big help, thank you! I'm now trying to specify my point as the map center. This is what I tried but I ended up in the ocean. <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no"> <title>ArcGIS JavaScript Tutorials: Create a Starter App</title> <style> html, body, #viewDiv { padding: 0; margin: 0; height: 100%; width: 100%; } </style> <link rel="stylesheet" href="https://js.arcgis.com/4.15/esri/themes/light/main.css"> <script src="https://js.arcgis.com/4.15/"></script> <script> //Style point var simpleMarkerSymbol = { type: "simple-marker", color: [226, 119, 40], // orange outline: { color: [255, 255, 255], // white width: 1 } }; // Create attributes var attributes = { Name: "Area 51", // The name of the Inspector: "Bob", }; // Create popup template var popupTemplate = { title: "{Name}", content: "Inspector Name <b>{Inspector}</b>." }; require([ "esri/Map", "esri/views/MapView", "esri/Graphic", "esri/layers/GraphicsLayer", "esri/geometry/Point", "esri/tasks/GeometryService", "esri/tasks/support/ProjectParameters", "esri/geometry/SpatialReference" ], function(Map, MapView, Graphic, GraphicsLayer, Point, GeometryService, ProjectParameters, SpatialReference) { var sr = new SpatialReference({ wkid: 2953 }); var map = new Map({ basemap: "topo-vector" }); var graphicsLayer = new GraphicsLayer(); map.add(graphicsLayer); var point = Point({ type: "point", x: 2665374.26, y: 7435378.29, spatialReference: sr }); var geomSer = new GeometryService({url: 'https://sampleserver6.arcgisonline.com/arcgis/rest/services/Utilities/Geometry/GeometryServer'}); var params = new ProjectParameters({ geometries: [point], outSpatialReference: new SpatialReference({wkid:102100}) }); geomSer.project(params).then(function(geom){ var pointGraphic = new Graphic({ geometry: point, symbol: simpleMarkerSymbol, attributes: attributes, popupTemplate: popupTemplate }); var view = new MapView({ container: "viewDiv", map: map, center: point, zoom: 13 }); graphicsLayer.add(pointGraphic); }); }); </script> </head> <body> <div id="viewDiv"></div> </body> </html>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

‎06-22-2020

I'm working from the tutorial here: Display point, line, and polygon graphics | ArcGIS for Developers And wondering how to adapt this if my coordinates are in a different spatial reference. I have the wkid. Thank you!

Online Status	Offline
Date Last Visited	‎03-06-2024 06:55 PM

My Ideas

Latest Contributions by JasonWood

goTo, zoom out a bit

Loading private feature layer into JavaScript map

Re: Query Polygon Intersection, exclude adjacent polygons or slight overlap?

Query Polygon Intersection, exclude adjacent polygons or slight overlap?

Re: How to escape strings in feature update requests?

Plot path with spatial reference conversion

Re: Beginner - can I use the REST API to add points on map?

Re: Beginner - can I use the REST API to add points on map?

Re: Beginner - can I use the REST API to add points on map?

Beginner - can I use the REST API to add points on map?

Re: Adapt tutorial for alternative spatial reference

Adapt tutorial for alternative spatial reference

Re: Beginner - can I use the REST API to add point...

Beginner - can I use the REST API to add points on...

Re: Beginner - can I use the REST API to add point...

Re: Beginner - can I use the REST API to add point...