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# GPS Dialog
---------------------------
---------------------------
## How to open
The GPS dialog can be opened by using the Commands > GPS Plotter option in the menu bar.
<img alt="Open GPS dialog using the Commands menu"
src="images/gps_dialog/open_gps_dialog.jpeg" height="100"/>
<br />
---------------------------
## User interface
<img alt="Open GPS dialog using the Commands menu"
src="images/gps_dialog/gps_dialog_ui.jpeg" height="400"/>
### Export directory selector
Composed of a button to select the directory to export the GPS data to and a
textbox displaying that directory.
### GPS plot window
The window where the GPS points extracted from a data set will be plotted. The
style of the plot depends on the background color chosen in the main window.
<br />
### Button bar
Contains three buttons:
+ **Read/Plot**: Read the GPS data and then plot it.
+ **Export**: Export the GPS points into a tab-separated file.
+ **Close**: Close the GPS dialog.
<br />
### Notification/info box
The box to display notifications or the information of a GPS data poin,
<br />
---------------------------
## How to use
<br />
### Plotting GPS data of a data set
Once a data set has been loaded, its GPS data can be plotted by clicking the Read/Plot button.
Each GPS data point is plotted as a small rectangle.
Once the plotting finishes, a message is displayed in the notification with the number of data points plotted.
Furthermore, the range of latitude and longitude of the GPS data is displayed on the plot.
### Displaying a GPS data point's information
When the GPS data finished plotting, clicking on a point on the plot will display its data in the notification box.
<br />
### Exporting the GPS data
By clicking the Export button, the GPS data will be exported to a file. The
name of the exported file is the name of the data set suffixed with
```.gps.dat```. By default, the file will be in the same directory as the data
set. A sample directory structure is given below.
```
Data/
├─ data.data/
└─ data.data.gps.dat
```
The directory the export file is stored in can be changed by clicking on the
**Export Directory** button.
<br />
<br />
<img alt="Change export directory" src="images/gps_dialog/click_on_export_directory_button.jpeg" height="400"/>
<br />
<br />
<img alt="Change export directory" src="images/gps_dialog/after_click_on_export_directory_button.jpeg" height="400"/>
<br />