This QGIS add-on is used to work with statistical data, generating reports by groups or categories for an attribute table field. Here below we’ll see how to use it. In this case, we’ll work with roads, towns and municipalities data from the Chiapas state, Mexico. First thing, we upload our data into QGIS. In order to start working with the plugin, we must install it from the QGIS add-on section. Once installed, we can start working with our data. We can access the add-on as follows: Next step will be to broaden the attribute table with more information. For exmple, in the “Town” layer we w ..read more

In this post, we’ll look at how to make the label sizes dependent on a field in the attribute table of the layer. Assume we have a large file, such as a world limits polygon type layer, that we want to label with the names of the countries. We do not want the labels to look like that. Instead we want this. Lets see how we can achieve this. Go to the Layer Proprieties (right-click it in the Layers Panel > Proprieties) and navigate to the Labels TAB. Select the labeling method > Single Labels. Next, select the attribute table field to use for labeling. In this case, we’ll go with the on ..read more

In ArcGIS Pro you cannot open or add LAZ (.laz) files directly and display the point cloud data on the map. The LAZ (.laz) files need to be decompressed and converted to LAS (.las) files. One easy way to do that is to use the LASzip, a free open source product of rapidlasso GmbH. The LASzip library is built into the LAStools, and while the LAStools is commercial software, the LASzip is available as an LGPL-licensed stand-alone software library. *Keep in mind that the LAStools need to be installed on your computer. An easy way to do that is to go and download it by using the Direct link to  ..read more

The David Rumsey Map Collection is incredibly complex, with a wide range of historical maps. “The historical map collection has over 116,000 maps and related images online. The online map collection is a searchable database that allows you to make your own journeys into spatial representations of the past. Here you can see the history of cartography through primary sources from 1500 into the 21st century.” (David Rumsey Map Collection) In the next steps, we will exemplify how to add two maps from this valuable site to ArcGIS Pro and ArcMap. Scroll down and from all the available options ..read more

TYC GIS’s new ArcGIS Pro Beginner Level Course will introduce you to ArcGIS Pro, ESRI’s most recent Desktop GIS application. It is a new software technology that was developed to meet the needs of an ever-expanding GIS community, and it includes scientific tools for answering difficult questions through spatial analysis. The training materials of this course will concentrate on: the main ArcGIS Pro user interface components (the ribbon view, panes, views, etc.); data models (vector and raster data models); data interaction tools, data symbolization; Coordinate Systems (projections an ..read more

ESA released in October 2021 a freely accessible global land cover product at 10 m resolution for the year 2020. This land cover map is based on Sentinel-1 and Sentinel-2 satellite imagery. To access this map you need to https://esa-worldcover.org/en. Click on the EXPLORE button. The WorldCover Viewer will open. On the left, under the layers panel you can see the viewer available datasets. Click on them to activate and deactivate them. Zoom in to an area of interest.  In order to be able to download the products available, go to the DOWNLOAD button. This requires to log in. If you do n ..read more

What is a cartogram or anamorphic map? Well, it is a thematic map (a map that illustrate the pattern of a particular variable/subject in a geographic area), in which the geographic areas are altered/twisted out of real shape, in a direct proportional way to the values associated with the variable. A cartogram or anamorphic map focus therefore on size to efficiently differentiate the spatial distribution of the variable being mapped. The main advantage of these types of maps is that they offer a more intuitive cartographic design and data visualization. In this tutorial we will find out how to ..read more

The analysis of planetary and stellar cartography is the next geospatial frontier, and Roberto Jimenez’s QGIS plugin “OpenPlanetary Tile Loader” is a significant step in this direction. This plugin provided by OpenPlanetary allow us to access various basemaps of Mars and The Moon. To explore its functionalities install the plugin in QGIS via the Plugins Manager. Once installed, the OpenPlanetary Tile Loader icon is displayed in the Plugins Toolbar, as illustrated in the picture below: Once opened, you can add Mars and Moon basemaps into your QGIS Project. Let’s add the Mars Colour MOLA elev ..read more

One of the most interesting QGIS Plugin is the QuickMapServices. This allows you to add different datasets and basemaps to your QGIS Project. Let’s see how we can do that. First of all, open the QGIS software and install the QuickMapServices plugin by going to the Plugins menu toolbar > Manage and Install plugins. The QGIS Plugins manager opens. Type “QuickMapServices” in the search box and proceed by installing the plugin. Once installed, an icon should appear in the Web Toolbar, as demonstrated in the image below: When we click on this icon, we will see that we are limited to only NASA ..read more

Cartography is a critical component of any GIS. QGIS is a free GIS, and its developer community is constantly developing new plugins to extend its functionality. One of these is the “Globe Builder,” plugin, which can add a globe to your map or layout. The plugin can be installed easily by going yo to the Manage and Install Plugins (under the Plugins menu toolbar). Once installed, you can open the plugin by going to the the Plugins menu toolbar. By clicking on the Build Globe view, a new window will open. It is preferable to maximize it. In this Globe Builder new window select: data sources ac ..read more