Details for DJI Mavic Drone Flight Path Automation for Routine Pasture Checks

Absolutely. You can plan a mission file. There is a free trial version available with the DJI agriculture app. If you purchased your Mav3 this year you can use that. Otherwise there are free and subscription software options. But you can just create the mission yourself in your controller and save it. Reusing the same mission over and over.

Copterus, Litchi, Pix4d Mapper, and DroneDeploy Flight are all candidates for supporting DJI autonomous flight. Sounds like you are looking for waypoint to waypoint vs grid. Litchi and Drone Deploy have waypoint routes for sure. The fact that your drone would be taking pix along the way is irrelevant. You can still see what is coming through the camera lens while autopilot does the flying.