Hello

I have created a new workspace, a new project, added tracks to it, and am trying to produce a map with isobath contour lines.

I highlighted my map area using "define map area".

One reason for this is possibly that I have added tracks from two different days: Sept 22 2018 and Sept 29 2018. The river level on Sept 22 about 30 miles upstream of my starting point was 2.2 feet. The river level on Sept 29 at the same location about 30 miles upstream from the starting point was 2.42 feet. Tracks from these two days were taken over almost the exact same portion of the river. Is it possible that I need to adjust the depth of the Sept 29 tracks down by .22 feet? If so how would I do this?

I have checked all of my layers, isobath, major contour, minor contour and tried to make sure that they were all set to be displayed with the correct options in each one.

After setting these and searching for solutions I would "generate map". I have never been able to get the contour or isobath depth lines to show on the map on this recent attempt. How can I show these lines?

my tracks combined are about 17.3 gigabytes.

My equipment is a Lowrance HDS 3. I save the tracks using SL2 format. All I want to do at this point is to run over the river at 20 to 25 mph and obtain depth information.

Edit: Two of my tracks were terminated abnormally when I had a low battery problem. Could these be the cause of my problem?

Thanks

Lee

Your map view looks strange to me and I'm wondering if something is going on with the map boundaries. Could you please post an image of the tracks and boundaries view, but zoomed out enough to show the defined map area and with the Map Boundaries panel (in the edit tab) displayed?

Hello Matt

The map boundaries extend very far south because I intend to survey this portion of the river in the future.

Lee

The first thing I would say is that your map is probably too big to work with as a single project. I would strongly recommend limiting the mapped area to an area no bigger than 20x20km, perhaps smaller. You can always combine multiple maps after they have been generated.
I would be interested to see the output of a small area, say no bigger than 1 mile square, mapped around an area with plenty of data points. Could you try this please, and post a snapshot of both the tracks and the map view? Alternatively, if you can share your workspace file (.rm2db) we can take a look. To share this, first zip the file and then use a file sharing service and post the link to This email address is being protected from spambots. You need JavaScript enabled to view it. .

Hello Matt

I have emailed the Reefmaster database file.

By using smaller map dimensions than at present, will my tracks that I have already recorded have any problems importing if portions of the tracks fall outside of the individual map projects?

Lee