I am a new user of DD and wanted to use it for determining where to put drain channels in a paddock. I am not using GCP's and a few inches here or there are not important.
I ran a small mission of some of the paddock and that seemed to work out well
I then tried the whole area of the paddock that I want to work with and it didn't come out so well
Not only are the arrows obviously pointing uphill when you stand in the paddock, but every winter lakes of water are at the blunt end of the arrows and don't spill out in the direction of the arrows as the elevation map shows they should
The missing section from the main map was probably caused by photos failing to upload (using satellite connection with high latency seems to slow uploads tremendously - but that's another story). I uploaded the missing photos seperately and put them into a new image which did seem to work well and contradicts the "main" map
Thoughts on what went wrong?
Edit: On the last map point A is lower than point B, but I suspect that this might be caused by being on the edge of the photos