Are the line numbers (1 and 2) part of the data?
Yes.
What characters come between each line? Perhaps Cr (13) and/or Lf (10)?
Cr (13) and Lf(10) in sequence CrLf
Robin2:
Looking at this data, I have a couple of questions.If you want to find a particular record what criterion do you want to use - for example do you want to find the next line or do you want to find the line with Line Number 23 or what?
I want to have aces to any record by it index. Cause my robot can start randomly on place. I check first record (?1) and see - i m to far from it. So i check record with index 10 and i see - i close to it - ok - start movement. After i reach some distance to this point - i go to next by incrementing index by 1.
Is there a guaranteed minimum line length?
Minimum line length - i don't sure. Cause can be latitude and latitude = integer degrees. With nothing in decimal part. But i don't see this in real...
You still haven't told us what software is creating the file? Is it a secret? (I'd tell you but then I'd have to shoot myself? )
This is software developed on QT framework (not my creation) working with topographic maps with linking to coordinate system. This software use maps with 1 cm equal to 10 m.
I don't have any idea where developer of software take this maps, but it exist for my city.
Main task of project - compare the performance of different algorithms for searching for a way to obtain the map position of the robot from GPS / Glonass