Ariasprado - - Arias Prado GIS Ramblings

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Some useful and aesthetic free map markers collections 22 Jan 2013 | 07:07 pm

When creating a web map with OpenLayers, Leaflet, Google Maps or similar, a problem that sometimes arises is finding useful and aesthetic map markers, especially when it is required that the markers t...

OpenLayers cluster strategy active state depending of current map scale 7 Jan 2013 | 06:01 pm

When the number features to display is large, the OpenLayers cluster strategy allows an uncluttered presentation by clustering features. However, at high zoom levels we would like to see the actual fe...

Apple pinch-to-zoom patent, rejected in the USA 20 Dec 2012 | 11:42 pm

Apple pinch-to-zoom patent claims have been rejected by the US Patent Office. However this determination is far from being definitive; it is expected that Apple will appeal this ruling.

Beware of decimal pixel values in OpenLayers 20 Dec 2012 | 02:31 am

Although it can sound non-sense, you can end inadvertively attempting to use decimal pixel values in the OpenLayers map viewer you are programming. This will cause errors that make you waste time.

Apple Maps (and user irresponsability) can be deadly! 13 Dec 2012 | 06:37 pm

We, the GPS systems users – no matter the brand – should not blindly rely on these devices. Near to the city of Mildura, Australia, some people got lost in the middle of a national park, where tempera...

Marker layers in OpenLayers 12 Dec 2012 | 02:31 am

In this post we will see how to create an OpenLayers map showing a markers layer using the class OpenLayers.Layer.Vector instead of OpenLayers.Layer.Markers. The former is the preferred way of accompl...

The death of Microsoft’s Silverlight and the Spanish SIGPAC 8 Dec 2012 | 01:37 am

It seems that Microsoft has decided to terminate its own Silverlight technology, whose first release dates from year 2007. The client side of SIGPAC, the Spanish GIS devoted to deliver information abo...

Disabling GeoServer disk quotas. 24 Oct 2012 | 01:16 am

On some installations, GeoServer will not start because an issue with GeoWebCache's diskquotas. GeoWebCache is a component bundled with GeoServer that offers Tile Map Service and Web Map Tile Service....

GeoServer WAR file too big for Tomcat servlet container. 9 Oct 2012 | 01:37 am

One of the possible ways of installing GeoServer is uploading its WAR file to an existing Tomcat - or any servlet container - instance. Using Apache Tomcat, I got a HTTP 500 error message because the ...

Styling missing tiles in OpenLayers 19 Sep 2012 | 02:26 am

In an OpenLayers based web map when a tile fails to load, an ugly and pink colored one will be shown instead. In this post we will see how this behaviour can be modified.

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