A common tool, mostly used in multicriteria analysis, is the construction of Euclidean distances. It consists in generating a raster from a vector layer or another raster that indicates the existing distances from that figure to the rest of the field in a visual and colourful way. Or said in a different way, it indicates the [...]
A common problem during environmental studies is calculating study areas or perimeters. If you are working with areas that are small enough so that its measure doesn’t appear anywhere, its size has to be measured manually. ArcGIS suggests a method to calculate them that depends on your precision skills. […]
ArcGIS has numerous tools to calculate topographic elements of all kinds, including volumetric calculations. In this post, we will learn how to calculate the volume of a polygon. […]
When we download a DTM raster from a web server, we obtain an image that looks like this: At first sight it is hard to appreciate the details of the image not knowing which part falls inside the map. In order to make its esthetical look seem better, we will apply a hillshade effect to [...]
Today we are going to study the erosion risk of a terrain. With multicriterial analysis we are going to analyse the slope as well as its proximity to rivers. […]
Many environmental projects need the design of presence or abundance maps in a fishnet (grid net). Following some simple steps we can represent in a grid the number of sightings of a species inside an area with colors that will vary depending on its abundance. […]
To carry out this activity we will take Spain as an example. According to the Soil Taxonomy Classification established by the US Soil survey staff, we can find 4 types of soil orders in Spain. We will use a map where we appreciate these different types of soil orders but the only information that we have in the [...]
By georeferencing we refer to the process of spatially adjusting a CAD drawing without modifying its original data. In ArcGIS, such process is done registering arbitrary points in the CAD drawing, therefore drawing known geographic coordinates. […]
ESRI launched the new ArcGIS 10.3 version with advanced features, available from any type of device. Let´s review some of its latest applications! […]
Following steps form our previous post, we will now visualize the viewsheds using ArcScene. […]
