6.4. GIS Book: Working with lines
To digitize lines, select the required layer in the Create Features panel (e. g. road_network). In the Construction Tools section, click Line as shown in Figure 17. To draw the … Read more
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6.3. GIS Book: Working with points
To start digitizing the points, select a point layer (e. g. buildings) in the Create Features panel. It is advisable to make sure that the Point tool is marked in … Read more
5. GIS Book: Georeferencing
Georeferencing is a technique of spatial positioning by means of which a digital image is assigned a reference system based on known coordinates. Some raster information is not associated with … Read more
List of spectral indices for Sentinel and Landsat
There is a large number of spectral indices that can analyze various aspects such as vegetation, water resources, snow, soil, fire, among others. The satellites better known as Landsat and … Read more
Manipulating raster data in QGIS
I was encouraged to make this publication as a result of a consultation I had. Sometimes when we work with raster data, we need to modify some of its values, … Read more
Top 5 of Plugins for QGIS
The plugins are available for download and use directly in QGIS, these add useful features to the software. It should be noted that the add-ons are developed by QGIS and … Read more
Generating Graphics with Data Plotly in QGIS 3
In order to give a bit of continuity to the theme of the previous post, now I’m going to show the experience of trying the plugin “DataPlotly”, which I found … Read more
Visualization and Analysis of Criminality Data with QGIS
We will continue to explore tools that allow us to generate graphs that help us analyze our data. In this opportunity we will use a QGIS plugin, which takes advantage … Read more
Complement for fields monitoring with Landsat-8 and Sentinel-2 images
In this opportunity we are going to show an option to carry out the activity of monitoring fields of crops through images of the satellites Landsat-8 and Sentinel-2. As indicated … Read more
Application of masks for clouds in Landsat 8 images with QGIS
In this opportunity we are going to present Cloud Masking, a QGIS plugin with which we can mask clouds, cloud shadows, cirrus (grey clouds), aerosols, ice/snow and water for Landsat … Read more
Integrating a dike into a DEM in QGIS 3
In this case we developed a case study using tools available in QGIS 3. It will show how to alter a Digital Elevation Model (DEM) using the Raster calculator, specifically … Read more