topic Re: How to display a million points on the map, defined by latitude and longitude. in Java Maps SDK Questions

How to display a million points on the map, defined by latitude and longitude.

TMPTMP1 — Sun, 16 Oct 2016 10:16:54 GMT

In swing java

Re: How to display a million points on the map, defined by latitude and longitude.

DanPatterson_Retired — Sun, 16 Oct 2016 11:56:50 GMT

If you need a visual representation, can you explain how you expect them to be distinguishable from one another?

Re: How to display a million points on the map, defined by latitude and longitude.

TMPTMP1 — Sun, 16 Oct 2016 12:11:40 GMT

Something like this.

Re: How to display a million points on the map, defined by latitude and longitude.

DanPatterson_Retired — Sun, 16 Oct 2016 12:28:51 GMT

I would probably summarize the points based upon the underlying polygons, then return the centroid of that polygon with the count of the points attributed to each polygon used to symbolize the point. I presume that the image on the right wasn't done that way in an Arc* environment?

Re: How to display a million points on the map, defined by latitude and longitude.

TMPTMP1 — Sun, 16 Oct 2016 12:54:45 GMT

No.

I try it

Re: How to display a million points on the map, defined by latitude and longitude.

DanPatterson_Retired — Sun, 16 Oct 2016 15:03:27 GMT

don't know about your need to do this in your environment, but ArcMap has tools to help in the aggregation of points based on distance... Aggregate Points—Help | ArcGIS for Desktop

Re: How to display a million points on the map, defined by latitude and longitude.

AlexanderNohe1 — Mon, 17 Oct 2016 12:24:37 GMT

I moved this from the Android location to the Java location as Swing is a Java technology.

Re: How to display a million points on the map, defined by latitude and longitude.

BatbayarBazarragchaa — Fri, 21 Oct 2016 02:52:25 GMT

You had memory or performance issues displaying millions of points?

You can use GraphicLayer to display data with latitude and longitude.

// construct spatial reference

SpatialReference spatialReference = SpatialReference.create(102100)

// construct symbol

MarkerSymbol markerSymbol = new PictureMarkerSymbol(ImageLoader.loadImage("icons/triange_red.png"));

for (int i = 0; i < points; i++) {

Point point = GeometryEngine.project(longitude, latitude, spatialReference);
graphicsLayer.addGraphic(new Graphic(point, markerSymbol));

}

Re: How to display a million points on the map, defined by latitude and longitude.

TMPTMP1 — Mon, 24 Oct 2016 16:56:23 GMT

Performance issue,

Thanks for your answer.