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karthi
Helper I
Helper I

GPS Geo Co Ordinates is picking wrong value

HI Team,

 

I have a Used function Location.Latitude and Location.Longitude to capture the geo co ordinates but the collected geo co ordinates are not accurate. (Please refer the attachment).

 

Blue radar is the correct live location where im standing but the collected geo co ordinates is on the opposite side of the road and far away from the live location

 

How to get the accurate Location geo co ordinates? 

 

@Mr-Dang-MSFT , ur magic inputs please. 

2 ACCEPTED SOLUTIONS

Accepted Solutions
iAm_ManCat
Most Valuable Professional
Most Valuable Professional

Standard civilian-grade GPS is accurate within a range - there is a minimum horizontal variance of 4m (NB, minimum), so it may be currently picking up your location there due to variance in where it is locating you.


@iAm_ManCat
My blog


Please 'Mark as Solution' if someone's post answered your question and always 'Thumbs Up' the posts you like or that helped you!


Thanks!
You and everyone else in the community make it the awesome and welcoming place it is, keep your questions coming and make sure to 'like' anything that makes you 'Appy
Sancho Harker, MVP


View solution in original post

Thanks @mogulman 🙂

Yes, I agree with @iAm_ManCat. The location service on a device isn't accurate enough to determine with certainty which side of a street someone is standing on. I have a friend with a private pilots license and he tells me that the expensive navigation system on his plane exhibits this same inaccuracy. So unfortunately, I don't think this particular problem is solvable.

If anyone is interested, here's what I said on P228 of my book.

-----

When we retrieve a location from a mobile device, the accuracy of the reading can vary. If the user has only just switched on the GPS, there may be insufficient time for the device to lock onto sufficient satellites to give an accurate reading. In this situation, devices have a tendency to return the last known location.

In the case of PowerApps, an important point is that when a user starts an app with the GPS turned on and turns off the GPS at a later point, any subsequent attempt to retrieve the location will return the last known location.

 

 

View solution in original post

4 REPLIES 4
iAm_ManCat
Most Valuable Professional
Most Valuable Professional

Standard civilian-grade GPS is accurate within a range - there is a minimum horizontal variance of 4m (NB, minimum), so it may be currently picking up your location there due to variance in where it is locating you.


@iAm_ManCat
My blog


Please 'Mark as Solution' if someone's post answered your question and always 'Thumbs Up' the posts you like or that helped you!


Thanks!
You and everyone else in the community make it the awesome and welcoming place it is, keep your questions coming and make sure to 'like' anything that makes you 'Appy
Sancho Harker, MVP


mogulman
Impactful Individual
Impactful Individual

In @timl 's book Beginning PowerApps he dicusses using map data (chp 11).  I've only read the chapter.  He appears to cover this in detail.

iAm_ManCat
Most Valuable Professional
Most Valuable Professional

@mogulman I read Tim's book last year - on page 228 is what you are looking for: he states "When we retrieve a location from a mobile device, the accuracy of the reading can vary"

- so my answer still stands: civilian-grade GPS has a potential inacurracy & minimum variance of 4m.

 

Cheers,

@iAm_ManCat 


@iAm_ManCat
My blog


Please 'Mark as Solution' if someone's post answered your question and always 'Thumbs Up' the posts you like or that helped you!


Thanks!
You and everyone else in the community make it the awesome and welcoming place it is, keep your questions coming and make sure to 'like' anything that makes you 'Appy
Sancho Harker, MVP


Thanks @mogulman 🙂

Yes, I agree with @iAm_ManCat. The location service on a device isn't accurate enough to determine with certainty which side of a street someone is standing on. I have a friend with a private pilots license and he tells me that the expensive navigation system on his plane exhibits this same inaccuracy. So unfortunately, I don't think this particular problem is solvable.

If anyone is interested, here's what I said on P228 of my book.

-----

When we retrieve a location from a mobile device, the accuracy of the reading can vary. If the user has only just switched on the GPS, there may be insufficient time for the device to lock onto sufficient satellites to give an accurate reading. In this situation, devices have a tendency to return the last known location.

In the case of PowerApps, an important point is that when a user starts an app with the GPS turned on and turns off the GPS at a later point, any subsequent attempt to retrieve the location will return the last known location.

 

 

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