Open source gpx editor manual#
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You can use the same mechanism as well to correct a simple mis-adjustment of your camera time for whatever reasons or an offset of a gpx-file due to quirks of a software used to convert other track file formats into gpx.

Open source gpx editor manual#

If you took the photographs somewhere else you got to check Manual and choose the appropriate difference from the drop-down field to the right. Select Same As System if you took the photographs in your home time zone and digiKam will figure out the difference to UTC from your system time. GPS track data is invariably recorded in UTC (Universal Time Coordinated), so you need to match the camera time with UTC, which can be done with Camera Time Zone.

You can load more than one file and digiKam will assign different colors to them and display the tracks on the map accordingly. When the file is loaded and Show Tracks On Map is checked the track is displayed on the map. To indicate possible time/location correlation you have to load a track file with Load GPX File that contains GPS data taken at the same time and location as the pictures. The above dialog will show up with the selected images in the list below the map. Select the images you want to correlate in the application main view, then call the geolocation editor with Ctrl+ Shift+ G and switch to the GPS Correlator tab on the Right Sidebar.

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Once you are done, download the pictures and the GPS tracks, and run the correlator. The idea is: while taking your pictures just keep a GPS device running and carry it around with the camera. In order to correlate your images with geographic data you need to have a GPS tracking information available as a XML file in gpx format ( gpsbabel can download and convert tracking data from a GPS device for you). Regarding the last item Bookmarks see here. Other than that the context menu on the list of images offer items to remove some of the data from the image. To delete geolocation data you got to un-check the relevant checkbox and click the Apply button right under the DOP field. Only for Altitude the context menu on the list of images offers Look Up Missing Altitude Values which causes the editor to look up these data in the map data provided the position (latitude and longitude) is already assigned to the photograph. Note that you have to check the relevant checkbox before you can edit a field (under Windows® you may have to double-click it). Otherwise you can fill them in manually if you have these data from somewhere else, e.g. You may see these fields already filled in if you select a photograph where your camera wrote these information into the Exif data. To the right of the map there are, beside latitude and longitude, fields for altitude, speed, number of satellites, fix type and uncertainty (DOP).

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This comes in handy if there is a series of photos taken at the same location.

If you have one or more images that already have GPS data you can copy the coordinates from one of those and paste them to one or more other images by using the respective items from the context menu on the list of images. The digiKam Geolocation Details View With a Map Using Off-Line Data ¶ To save your changes you click the Apply button right under the DOP field. The coordinates will then be displayed in the Latitude and Longitude fields to the right of the map. Now you can go to the list of images below the map, select one or more images, click with the right mouse button on them and choose Paste Coordinates. Eventually you click with the right mouse button at the desired position and choose Copy Coordinates. Note that the zoom center will always be at the cursor position. Move the mouse cursor to the region of interest, zoom in, adjust location, zoom in again, and so on until sufficient accuracy is achieved. The location can be found and fixed iteratively with the displayed map. The coordinates can be set manually in the Details tab.