Baixar dados do OpenStreetMap com o QuickOSM no QGIS

Introduction

This tutorial will guide you through the process of downloading data from OpenStreetMap (OSM) using the QuickOSM plugin in QGIS. OpenStreetMap is a collaborative mapping project that provides free and editable maps for users worldwide. The QuickOSM plugin allows you to easily fetch and filter OSM data based on specific attributes, making it a valuable tool for geospatial analysis.

Step 1: Install QGIS and QuickOSM Plugin

1. Download and install QGIS

   • Visit the QGIS official website and download the latest version compatible with your operating system.
   • Follow the installation instructions to set up QGIS on your computer.

2. Install the QuickOSM plugin

   • Open QGIS and navigate to the menu bar.
   • Go to Plugins > Manage and Install Plugins.
   • In the Plugins dialog, search for "QuickOSM".
   • Click on the checkbox next to QuickOSM to install it, and then close the dialog.

Step 2: Set Up Your Project

1. Create a new project

   • In QGIS, select Project > New from the menu to create a new project.

2. Add a base map (optional)

   • To visualize your data better, you may want to add a base map.
   • Navigate to Plugins > QuickMapServices > Settings.
   • In the settings, enable services like OpenStreetMap or Google Maps.

Step 3: Download Data Using QuickOSM

1. Open QuickOSM

   • Go to Vector > QuickOSM > Download OSM data.

2. Define your query

   • In the QuickOSM dialog, fill out the following fields:
     • Key: Enter the desired OSM key (e.g., "building", "road").
     • Value: Enter the corresponding value (e.g., "commercial", "primary").
     • Area: You can define the area to download data for by using the map canvas or entering coordinates.

3. Run the query

   • Click the Run Query button to download the data.
   • The data will be added as a new layer in your QGIS project.

Step 4: Filter and Style Your Data

1. Filter data layers

   • You can manage and filter your downloaded layers in the Layers panel.
   • Right-click on the layer and select Properties to adjust visibility and style.

2. Style the layer

   • In the Layer Properties, navigate to the Symbology tab to change how your data is visually represented.
   • Choose styles based on your analysis needs (e.g., color coding by type).

Step 5: Export Your Data (Optional)

1. Export the data
   • If you need to save your data for use in other applications, right-click on the layer in the Layers panel.
   • Select Export > Save Features As.
   • Choose your desired format (e.g., Shapefile, GeoJSON), specify the file path, and click OK.

Conclusion

You have successfully learned how to download and manipulate OpenStreetMap data using the QuickOSM plugin in QGIS. This process not only enhances your mapping capabilities but also allows you to engage in more detailed geospatial analysis. As next steps, consider exploring more complex queries with QuickOSM or integrating your data with other GIS tools for further analysis. For additional resources, check the provided links in the video description.