There exists the possibility to select those raster cells that comply with a certain criteria based in the values adopted by each of them. To do so, we will use this simple ArcToolBox tool “Extract by Attributes” that belongs to the tool group “Extraction” in the “Spatial Analyst” toolbox. […]
By generating Viewsheds we can determine which areas are visible form a certain point in a Digital Terrain Model (DTM). It defines the visibility that we obtain of a terrain from a specific observation point. […]
We have always heard about Open source inside the GIS sector, but when did they appear? what are they useful for? what is their future? […]
When we study a segment of a specific river to see where the water would flow if reached a certain value, different questions arise such as what will be the height reached by the water profile? Will surrounding areas be flooded? To what extent? It is not an easy task to answer these questions as we [...]
Map packages are useful to save map documents and share this information with others or in other computers. […]
In relation to our last post, Building tools in ArcGIS with “ModelBuilder”, today we are going to demonstrate how to save ModelBuilder. Once ModelBuilder is generated (as seen on previous steps), it can be saved to be used as one more tool. […]
ModelBuilder is a simple visual model used to generate the sequencing of different tools. If you follow a series of equal steps with different layers, with this model you can create one tool for doing so in one step. […]
Thanks to the technological development and evolution, today there are many online tools applied to Geographic Information Systems. We can use these tools easily and fast for a lot of applications, and, in their majority, for free. * Image by Anthony in Book Cover Cafe […]
It is possible to select a specific area of a raster using another layer (raster or entity) as a template whose extension delimits the extent of the output raster. The output raster will maintain its attribute table, bounded to the extension that we have imposed. […]
As you already know, last Wednesday April 22 was the international Earth Day. This is a special day dedicated to remember all the things that our mother Earth is giving us every day, and how important it is to preserve this patrimony. […]
