WebMapping

How to digitize vector data in Google Earth and export them to Shapefiles

How to digitize vector data in Google Earth and export them to Shapefiles

We know the importance of google earth and its high resolution imagery of any area. Sometimes we like to use this imagery to create updated vector data. In this tutorial, you will see an efficient way for the creation of vector layers like to digitize vector data directly in google earth, import them in QGIS, and save them finally as Shapefiles. ...

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Check Google Earth’s Accuracy over an area of Interest

Check Google Earth’s Accuracy over an area of Interest

It can be more convenient to use Google Earth to get coordinates of a ground feature, than going out in the field with a GPS. However, Google Earth’s accuracy can vary depending where you are This video shows how users can check the accuracy of Google Earth over an area of interest.

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WebMapping application using PostGIS, Geoserver and GeoExt – Part 2

Publish data for a WebMapping  application using PostGIS and Geoserver | Create layers style

In the previous tutorial, we published geographic data stored in PostGIS using Geoserver. Geospatial data has no intrinsic visual component. To see data, it must be styled. Styling specifies color, thickness, and other visible attributes used to render data on the map. In GeoServer, styling is possible using a markup language called Styled Layer Descriptor (SLD). SLD is an XML-based markup ...

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