The time interval should correspond to the device setting used whilst the track was created.ĬSV files are text files that hold a set of within each row. If time information is required - for example, to apply an accurate tide offset - then the option Regular Trackpoint Interval must be set in the Equipment Profile used during import. GPX track files do not contain time information for individual track points. Tracks contained in GPX files from Lowrance™ units cannot be used to create maps, although they can be imported as zero-depth tracks. Tracks contained in GPX files generated by Humminbird™ or Garmin™ devices can be used to generate maps, so long as the depth information is present. Humminbird™ and Garmin™ provide their own extensions to the GPX track format which do include the depth of each track point. The standard GPX format supports waypoints and track logs, but does not contain depth information for individual track points. The GPX file format is a common file format for the exchange of GPS data between different device manufacturers. Humminbird units can export saved tracks and waypoints in HT and HWR format files, whilst Lowrance units produce USR files than contain both waypoints and tracks. GPS track and waypoint files can be exported from some GPS units e.g. These files are the preferred choice when logging Lowrance or Simrad data for use in ReefMaster. SL2 and S元 files can contain sonar pings for more than one channel, and may also include side-scan data. For example, if using a dual frequency sonar with 83khz and 200hkz channels, choose 200khz. The preference for ReefMaster import is the highest frequency channel. When logging sonar on the Lowrance device, you must specify which channel to record. SLG files contain sonar pings for a single channel of sonar. The SL2 file format is the preferred option for use with ReefMaster. Lowrance units log sonar in one of two file formats SLG and SL2. Lowrance™ units do not save depth information with track logs, so sonar logs must be used to provide the depth information required for mapping. Note that older (pre v4.x) versions of the Humminbird sonar log file format do not contain depth information and are not supported by ReefMaster. ReefMaster will locate and load the appropriate. To import a Humminbird sonar log, select the.ReefMaster only imports data from the 200khz channel. Typically, the zero numbered file contains 83khz data, number one contains 200khz data and two and three hold the left and right channels of the side imaging data. SON files named B0000.SON through B003.SON. On a side imaging unit, for example, you might find four. SON sonar log files, one for each recorded sonar channel. DAT file for each sonar recording that has been made, along with a sub-directory of the same name, which contains the actual sonar recording files.įor example, a recording named R00160 will have a file named R00160.DAT and a sub-directory named R00160. Humminbird units log sonar to data files within a directory named RECORD. Consult your GPS/sounder unit documentation for information on how to record sonar log files.As track points imported from sonar log files contain explicit time information, the Equipment Profile option Regular Trackpoint Interval is ignored during the import process for these file types.As sonar log files contain so much more information than GPS track files, they are the preferred source of data when creating maps. Sonar log files contain latitude, longitude, depth and time information for each track point, as well as the raw sonar data from each sonar ping and, often, further information such as water temperature, boat speed and course.For example, native Garmin data must be converted to the GPX format using the Garmin HomePort software package. If the file type of the data from the GPS unit is not directly supported by ReefMaster, it must be converted into a format that is.Although the data can be imported directly into ReefMaster from a connected memory card, it is recommended that data is first transferred to the hard-disk on the PC, where it can be stored, and is available for re-import to ReefMaster if required. Once data is has been transferred onto a memory card, the card should be connected to the PC that is running ReefMaster.For later model Humminbird units, for example, there is an option Export All Nav Data which transfers all saved tracks and waypoints. Consult the documentation that came with your GPS device for information on how to transfer data onto a memory card.The most common method of transferring data from a physical GPS/Sounder device is via a Memory Card. Before data can be imported into ReefMaster it must first be transferred from the source device.
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