TRD 05: Data Presentation techniques (Mapping) Quantum GIS ...

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10.2 Using the GPS Plugin Use the browse button [...] to select the GPX file, then use the checkboxes to select the feature types you want to load from that GPX file. Each feature type will be loaded in a separate layer when you click OK. 10.2.3. GPSBabel Since QGIS uses GPX files you need a way to convert other GPS file formats to GPX. This can be done for many formats using the free program GPSBabel, which is available at http://www.gpsbabel.org. This program can also transfer GPS data between your computer and a GPS device. QGIS uses GPSBabel to do these things, so it is recommended that you install it. However, if you just want to load GPS data from GPX files you will not need it. Version 1.2.3 of GPSBabel is known to work with QGIS, but you should be able to use later versions without any problems. 10.2.4. Importing GPS data To import GPS data from a file that is not a GPX file, you use the tool Import other file in the GPS Tools dialog. Here you select the file that you want to import, which feature type you want to import from it, where you want to store the converted GPX file, and what the name of the new layer should be. When you select the file to import you must also select the format of that file by using the menu in the file selection dialog (see figure 21). All formats do not support all three feature types, so for many formats you will only be able to choose between one or two types. 10.2.5. Downloading GPS data from a device QGIS can use GPSBabel to download data from a GPS device directly into vector layers. For this you use the tool Download from GPS (see Figure 22), where you select your type of GPS device, the port that it is connected to, the feature type that you want to download, the GPX file where the data should be stored, and the name of the new layer. The device type you select in the GPS device menu determines how GPSBabel tries to communicate with the device. If none of the device types works with your GPS device you can create a new type (see section 10.2.7). The port is a file name or some other name that your operating system uses as a reference to the physical port in your computer that the GPS device is connected to. On Linux this is something like /dev/ttyS0 or /dev/ttyS1 and on Windows it’s COM1 or COM2. When you click OK the data will be downloaded from the device and appear as a layer in QGIS. QGIS 0.8 User Guide 71
10.2 Using the GPS Plugin Figure 21: File selection dialog for the import tool 10.2.6. Uploading GPS data to a device You can also upload data directly from a vector layer in QGIS to a GPS device, using the tool Upload to GPS. The layer must be a GPX layer. To do this you simply select the layer that you want to upload, the type of your GPS device, and the port that it’s connected to. Just as with the download tool you can specify new device types if your device isn’t in the list. This tool is very useful together with the vector editing capabilities of QGIS. You can load a map, create some waypoints and routes, and then upload them and use them in your GPS device. 10.2.7. Defining new device types There are lots of different types of GPS devices. The QGIS developers can’t test all of them, so if you have one that does not work with any of the device types listed in the download and upload tools you can define your own device type for it. You do this by using the GPS device editor, which you start by clicking the Edit devices button in the download or the upload window. QGIS 0.8 User Guide 72
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THE REGIONAL TRAINING WORKSHOP ON L
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3.4 QGIS GUI - Add a PostGIS Layer
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3.5 Rendering overview have been se
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3.9 Spatial Bookmarks $HOME/.config
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4. Working with Vector Data QGIS su
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