Sử dụng QGIS Browser¶

Xác định vị trí QGIS Browser¶

QGIS Browser Standalone Application¶

QGIS Browser là một module trong bộ cài cơ bản của QGIS.

• Windows: Nếu bạn cài đặt QGIS bằng bộ cài OSGEO4W, bạn sẽ thấy QGIS Browser trong menu khởi động.

• Mac: Ứng dụng này có trong QGIS.app/Contents/MacOS/bin/QGIS Browser.app. Bạn có thể tạo đường dẫn symlink tới ứng dụng này. Chỉ dẫn đến thư mục Application, bấm chuột phải vào QGIS icon và lựa chọn Show Package Contents. Tim tới MacOS ‣ bin ‣ QGIS Browser. Bấm chuột phải vào icon QGIS Browser và lựa chọn Make Alias. Kéo QGIS Browser alias vào thư mục Applications. Thế là bạn có thể truy cập vào QGIS Browser như các ứng dụng khác.

• Linux: Bạn có thể mở QGIS browser bằng câu lệnh qbrowser. Nó nằm trong cùng thư mục với qgis.

Bảng Browser trong QGIS¶

A convenient way to access the QGIS Browser is from within the main QGIS Desktop application itself. The browser panel is located at the bottom of the left-hand panel in QGIS. Click on the Browser tab to open the QGIS Browser. If you do not see the Browser tab, enable it by doing to View ‣ Panels ‣ Browser (Windows and Mac) or Settings ‣ Panels ‣ Browser (Linux).

Các bước thực hiện¶

1. Now let us explore some features of the QGIS Browser. Switch to the standalone QGIS Browser application. Browse to a directory on your system where you have some GIS data. You will immediately notice the advantage of using the Browser. Instead of seeing all support files and non-spatial data, you see only the spatial layers that are supported by QGIS. Click on a layer to select it.

2. As you select a layer, you will see the Metadata in the first tab on the right-hand panel. You can quickly gather basic information about the dataset from this panel, such as number of features, projection etc.

3. If you switch to the Preview tab, you will a preview of the dataset. This is a quick way to determine how the dataset looks before opening it in QGIS.

4. The last tab is the Attributes tab. Here you can see the attribute table of the dataset to get an idea of the fields available and their values.

5. The QGIS Browser not only gives you access to vector and imagery layers on your system, but also databases and network resources. If you use any online data via WMS, you can quickly preview it within the browser. Just expand the WMS location and you will see the resources you have setup. Similarly, if you have PostGIS, SpatialLite or MSSQL databases available, you can access those as well.

6. QGIS Browser has the ability to browse and open zip files directly. Navigate to any folder containing zip files. You will see that the zip files also appear as a supported dataset and you can preview it just like any other dataset.

7. Another useful feature is to add certain folders in your system as Favorites. Right-click any folder and select Add as a favorite.

8. After adding the location as a favorite, it can be quickly accessed from the Favorites folder in the browser.

9. Once you have selected the layer, you can double-click it to add it to the QGIS canvas. You can also drag-and-drop the layer to the QGIS Canvas.

10. You can switch back to the Layers panel from the bottom of the left-hand panel in QGIS to view the added layer.