Tag Info

New answers tagged

1

I don't think it makes any sense to try use the raw values from a heatmap in the legend, as they will have practically no meaning to anyone who reads your map. You're much better using descriptive terms in your legend like "higher density" and "lower density". If you REALLY need to use raw values, then it would be something like "0.039 sum of point values ...


1

I asked a similar question (Key for a Heat Map) and found the answers very useful. If it does not fully address your question it might point you in the right direction. I also suggest you read the QGIS User Guide section on the heat map plugin (http://docs.qgis.org/2.0/en/docs/user_manual/plugins/plugins_heatmap.html). Good luck with you mapping.


1

here is my simple approach: create a new map in umap: http://umap.openstreetmap.fr/en click Import Data a select all the gpx files you have and upload them into map (you can import all of them at once) enter Edit map settings > Default properties, choose opacity 0.25, weight 10. The three steps above will take 5 minutes and here is the result:


1

You have missed out only one aspect in creating the feature object. Working fiddle: http://jsfiddle.net/GFarkas/61dafv93/. var pointFeature = new ol.Feature({ labelPoint: lonLat, weight: 20 // e.g. temperature }); You defined the labelPoint property of your feature, which isn't a default observable property and is used to label a multidimensional ...


1

You can summarize the table by zip code. Choose zip code as Statistics Field and the Statistic Type COUNT. Then for Case Field choose zip code. The output table will give you the count of Doctors by zip code. You can also do this in ArcMap by right clicking on the field you want to summarize and select 'summarize.'


0

I realize this post is a year old, but I came across it when looking up information on kernel density estimations with QGIS. I've not tried this yet, but it appears from the QGIS documentation that the Heatmap Plugin can make use of the attributes of the original points via the "Use weight from field" option. (would love to hear back from anyone with ...


3

Step-by-step for GeoServer. Note: As @michal-mackiewicz writes, the WPS extension for GeoServer must be installed. Acquire some point data, for example Natural Earth populated places http://www.naturalearthdata.com/http//www.naturalearthdata.com/download/10m/cultural/ne_10m_populated_places.zip Import data into Postgis for example with ogr2ogr ogr2ogr ...


2

There was a bunch of bugs in the heatmap code which I've now fixed. You can either download an updated development snapshot to get these fixes, or for QGIS < 2.6 there's some workarounds: make sure your layer isn't a "multipoint" layer there's a bug which causes the layer choice from the dialog not to apply the first time in a session. Rerunning the ...



Top 50 recent answers are included