[GIS] plot points on a map using JSON data from a Node.js API

arcgis-javascript-apijavascriptnode-js

I am new to the arcGIS JavaScript API. I have a Node API that is providing geographical information in JSON. I have google'd for examples and searched for solutions on this web site. Can anyone point me towards an example where JSON data is used to plot points on a map?

Best Answer

this is the sample you should start by taking a look at.

in general, you need to use esriRequest to fetch your data, and then parse as appropriate before passing to a FeatureLayer or creating your own graphics and adding them to the map.

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Convert Spatial Geographic Data from SQL Server 2008 to JSON

In theory just replace all SQL commands having geometry:: cast to geography casts (assuming that you 2008 R2 MSSQL server) Edit: looked that example code . Change Microsoft.SqlServer.Types.SqlGeometry to Microsoft.SqlServer.Types.SqlGeography OR Find SQL command which select code and force it to cast your geography objects to geometry

[GIS] ArcGIS API for JavaScript: Draw a Tracker Line from GPS points

firstly, create a polyline

 var polyline = new Polyline(new SpatialReference({wkid:4326}));

after define path array,

var path = []
path.push(new Point(34.673876,68.790897));
path.push(new Point(34.673876,68.790897));
path.push(new Point(34.673876,68.790897));
path.push(new Point(34.673876,68.790897));
path.push(new Point(34.673876,68.790897));

and finally add path to polyline

polyline.addPath(path);
//add to map
map.graphics.add(new Graphic(polyline,new SimpleLineSymbol());

Best Answer

Related Solutions

Convert Spatial Geographic Data from SQL Server 2008 to JSON

[GIS] ArcGIS API for JavaScript: Draw a Tracker Line from GPS points

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