4 ms·
If it's a fixed offset for a particular person, then isn't that just another variable in a simultaneous equation? You'd just need one more sample to solve for i
by rlpb 6y ago
If it's a fixed offset for a particular person, then isn't that just another variable in a simultaneous equation? You'd just need one more sample to solve for it.
- gruez 6y agoNo, because your solution will be off by that offset. eg. if the offset is 1KM to the north, and you tried the method mentioned in the blog post then your final solution will also be 1KM to the north. You can still use the information for limited stalking purposes (eg. has the person moved or not), but it's not nearly as useful as knowing their exact location.
- dragonwriter 6y agoIf you can ever determine their exact location at any time that you have the data for, you can determine the offset and then determine their exact location at all other times you have data for.
- gruez 6y agobut that was in my original comment? >[...] but if you have a known point of reference (so you can deduce what the offset is) [...]
- est31 6y agoDo this a couple of times, plot the locations, and you'll see a subset of the town's map. You might be able to identify prominent shapes like interestingly shaped roads or bridges. Then drag the points layer so that the roads/bridges etc align.
- rlpb 6y agoOh, I see, thanks. It's a location offset, not a distance offset.
- dheera 6y agoWith a fixed offset, a person who walks around outside and makes at least a few turns could easily have their fixed-offset location trace template-matched to OSM or other street data to determine the offset. (If you live in NYC it might take slightly longer.)