Nikon

Importing Track Logs

Compatible cameras, smartphones, and GNSS receivers acquire location data from GNSS satellites at regular intervals. Track logs created from these location data can be loaded into NX Studio and displayed on the map.

Track Logs

For information on saving and uploading track logs, see the documentation for your camera, smartphone, or GNSS receiver.

Supported Formats

The following track log file types are supported:

  • NMEA (extensions “.nmea”, “.nma”, “.log”)
  • GPX (extension “.gpx”)

Opening and Viewing Track Logs

Copy the track logs to the computer using a card reader or the like.

  1. Enabling “view track logs” () in the map toolbar displays [Log Matching] controls.

  2. To add a track log, click [Add] under [Track Log File] and choose the desired file to display the track on the map.

  3. The start and end of the track are shown by start () and end () pins.

Importing Track Logs

  • The log matching list shows up to ten track logs at a time. Tracks can be displayed by selecting the logs in the list.
  • To view or hide tracks, click the adjacent check boxes () on or off.
  • Logs currently selected in the list can be removed by clicking the [Remove] button under [Track Log File].

Adding Pictures to Track Logs

Pictures can be matched to positions on track logs by date and time of recording. Location data can be added simultaneously to multiple pictures for which none previously existed.

  1. Select a folder containing pictures recorded at dates and times matching those of the track log, display the filmstrip, and click the [Run] button under [Log Matching].

    Location Data

    Location data will be added to pictures taken while tracking was active or within one hour of the log’s start or end.

  2. The thumbnails for pictures shot in the time spanned by the log are indicated by check marks () and map pins ().

    Pictures That Cannot Be Assigned Location Data

    Pictures that cannot be assigned location data are indicated by icons.

    Track Points

    The points on the track log where location data were acquired from GNSS satellites are referred to as “track points”. Track points are added at set intervals not directly linked to picture recording times. At default settings, pictures are matched to the track points with the times most closely matching the times the pictures were taken. The matching between pictures and track points can be adjusted via [Log Matching] in the [Options] dialog (0 Matching Options).

  3. Click thumbnails to view picture locations; the pins for selected pictures are displayed in red (). Conversely, clicking map pins selects the thumbnails for the associated pictures.

    Removing Matches

    Pictures can be removed from the map by removing the checks from the thumbnails, in which case no location data will be added to the pictures.

  4. To add location data to the selected pictures, click the [Save] button under [Log Matching] and then click [Yes] when prompted.

  5. Location data icons () will appear on the thumbnails.

    Manipulating Location Data

    The location data added to pictures can be edited manually (0 Editing Location Data).

Matching Options

To choose how NX Studio matches pictures to track points after you click the Log Matching [Run] button, use the [Assign Location] options in the [Log Matching] section of the [Options] dialog.

The example that follows shows how the different options determine how NX Studio assigns location data to a picture taken at 10:32 based on track points recorded at 10:30 (a) and 10:35 (b).

[Nearest track point (single point)]

Pictures are matched to track points with the times most closely matching the times the pictures were taken. In this case, the location data for track point (a) will be added to the picture.

[Last and next track points (two points)]

NX Studio calculates a shooting location for each picture based on the difference between the time of recording and the times for the two closest track points. In this example, the picture will be assigned a position two fifths of the way between points (a) and (b).

Adding Altitude/Depth Readings to Track Logs

Track logs can be combined with altitude/depth logs recorded with Nikon digital cameras. Altitude or depth data will be added to track points in the track log.

Altitude/Depth Logs

  • Altitude/depth logs are produced by Nikon digital cameras equipped with altimeters or depth sensors that record the altitude or depth at set intervals.
  • The location and altitude or depth recorded at each interval is referred to as a “track point”.
  1. In the [View] menu, select [Map Display Options] > [Merge Altitude and Track Logs].
  2. Click [Select] and choose a track log. The track log file name, file type, and start and end times appear in the track log file list.

  3. Click [Add] and choose an altitude/depth log.

    Altitude/Depth Logs

    • The log matching list shows up to ten altitude/depth logs at a time. Tracks can be displayed by selecting the logs in the list.
    • To view or hide tracks, click the adjacent check boxes () on or off.
    • Logs currently selected in the list can be removed by clicking the [Remove] button next to [Altitude/Depth Log File].
  4. Click [Save] to merge the logs and exit the [Merge Altitude Log with Track Log] dialog.

    Altitude/Depth Data

    At default settings, altitude/depth readings are matched to track points with the times most closely matching the times the readings were recorded. The matching between altitude/depth readings and track points can be adjusted via [Log Matching] in the [Options] dialog (0 Matching Options).