Tag » OpenLayers

Networks, Geography, and Gephi: Lots of Promise, but Lots of Work to be Done

This post will outline some of my efforts to bring social networks into dialog with geography. Although I have found some interesting plugins and hacks, the results still leave something to be desired. 1.250 kata lagi


Quick webmaps with qgis2web

In Publishing interactive web maps using QGIS, I presented two plugins for exporting web maps from QGIS. Today, I want to add an new member to this family: the… 143 kata lagi


Code for BAM: Part 1 of N. Gephi and Maps

This is the first in a series of posts where I will be detailing some of the code and development of BAM. Some of these techniques may be old hat for some users or simple hacks, but they might be useful for anyone else who is trying to do similar work. 1.948 kata lagi


Animate feature position in vector layer on it's reload

Tested on GeoServer and OpenLayers 3.7.

  1. First of all we need to create layer and its source:
    var source = new ol.source.Vector({
     strategy: ol.loadingstrategy.bbox
    var layer = new ol.layer.Vector({
     source: source
  2. 298 kata lagi

Using beforeGetFeatureInfo event for filtering layers to get info

*For OpenLayers 2.13

Put an empty array as layers property in WMSGetFeatureInfo (We will generate the layer array in the event): line 4

Suscribe event: line 47… 275 kata lagi


Request GeoServer vector layer from another domain via WFS from OpenLayers

Tested on GeoServer and OpenLayers 3.7. Remember, that OL 3.5 have some changes not backwards compatible.

  1. GeoServer part:
    All you need is to turn on JSONP output format at %GEO_SRV_HOME%/WEB-INF/
  2. 292 kata lagi

GeoExt 3 is around the corner

Web GIS components on client side depends on JavaScript. If you are following my Web GIS Development Step by Step series, you might have noticed a question about GUI and I explained that it is JavaScript Library called GeoExt. 65 kata lagi