This page provides helpful information about how to use this SDI.

The Spatial Data Infrastructure (SDI) of project Projeto Brumadinho UFMG allows access to a catalog of spatial data obtained by other subprojects and the creation of maps using this data.

Browsing Datasets

Datasets are resources representing a raster or a vector spatial data source. By clicking on the Datasets link you will get a list of all published datasets.

All data can be downloaded in a variety of formats, for use in other applications.

Browsing Maps

Maps are comprised of various datasets and their styles. They also contain other information such as map zoom and extent, dataset ordering and style. You can create a map based on the available datasets. You can choose other base maps such as OpenStreetMap, OpenTopoMap, Sentinel-2 cloudless and empty background.

The Maps tab is a gateway to map exploration on GeoNode. From here you can create a map, which will open the Map Composer.

How to find data

• You can use the Search box in the navigation bar to find datasets (see the picture below).

  

• In the search page you can customize a search for numerous pieces of information. It is possible to search for data by Text, Categories, Type, Keywords, Owners, Date, Regions or Extent.

  

• Using the EXTENT filter you can apply a spatial filter by moving or zooming a map within a box as shown in the video below.

  

• All the categories available are listed in the Home page section shown in the image below. You can search for data by category by clicking on it.

  

What can i do with Datasets

• Metadata Detail to explore in detail the document metadata.

• View Layer to open the dataset on the map.

• Download Metadata to download the whole set of metadata in various formats.

• The Download Dataset button is at the top of the Dataset Page. It provides access to the ability to extract geospatial data from within GeoNode. You will see a list of options of the supported export formats. You can choose the image formats PNG, PDF, JPEG if you want to save a “screenshot-like” image of the dataset.

  

  You can also download the dataset. The supported export formats will be listed in the Data tab. Click on your desired format to trigger the download. As shown in the video above, GeoNode allows you to download a subset of data. Click on 'Do you want to filter it?' to filter the dataset before the download.

  

Creating maps

• You can create maps using the Create Map button in the navigation bar.

  

• You can create maps using a specific dataset in the layer page using the Create Map button.

  

• You can also select datasets in the Explore Layers Page, click the Select button for the desired layers. Then click on the Create Map button. You can see a short demonstration video below.

  

Using maps

• You can manage datasets and add new ones from Catalog to map as shown in the video bellow.

  

• You can also manage datasets overlap, manage dataset opacity and visibility. You can see in the video below the use of features.

  

• Sidebar tools: zooming buttons and expand/collapse toolbar.

  Expanded toolbar:

  • :allows retrieving information about datasets, by clicking on the location.
  • : extent zoom to max.
  • : go back from zoom.
  • : go forward in zoom.
  • : full screen button allows you to have a full screen map.

• Footer tools: you can see and change the scale of the map and change it. The button allows you to see the pointer Coordinates and to change the Coordinate Reference System (CRS), WGS 84 by default. The footer tools and expanded sidebar can be seen in the image below.

  

  The Query Objects on map allows you to get feature information . It allows you to retrieve information about the features of some layers by clicking them directly on the map.

  

Using Datasets with other applications

This SDI is interoperable to integrate with external applications and services.

Connect to QGIS

You can connect to Qgis by going to Layer Menu > Data Source Manager. At the bottom of the Data Source Manager, you can see a tab with the name and an icon related to Geonode. Geonode is recognized as data source inside QGIS.

To add a new Geonode instance, in the selected Geonode tab, click on 'New' and fill the name as you like and in the URL enter the following link: http://ide.projetobrumadinho.ufmg.br/. It’s possible to test the connection, and if everything is ok you will receive a successful connection message. It’s now possible to load all layers of the Geonode instance by clicking on the 'Connect button'. This process is shown in the video below.

You can see both WMS and WFS Geonode connections and you can load them to QGIS Desktop. Using Qgis you can edit the style and combine datasets, use the QGIS tools and analyze the SDI's datasets.