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How to identify unknown coordinate type and convert to lat/lon?
Planned maintenance scheduled April 23, 2019 at 23:30 UTC (7:30pm US/Eastern)
Announcing the arrival of Valued Associate #679: Cesar Manara
Unicorn Meta Zoo #1: Why another podcast?Manually transforming rotated lat/lon to regular lat/lon?Not able to convert GPS coordinates received from a software into Latitude and LongitudeConverting unknown type of coordinates to lat/lonWhat kind of coordinate uses this WMS? Also how to convert to lat/lonTransforming zonal and meridional velocity from regular lat lon to rotated lat lon?Transform Lat/Lon to LCC and vice versaPossible to get Lat/Lon coordinates of triangle vertex point?Convert Lat/Lon sexagesimal degrees to UTM coordinatesConverting Coordinates formatted as Lat 4531.38153 Long 12347.2328 to Decimal Degrees?Is SRID 4326 Lon/Lat or Lat/Lon?
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I have some coordinates from an old Oracle database (AMANDA) and I don't recognize the format.
For example, converting these coordinates: 3109020, 10114224
Should result in a point near latitude, longitude: 30.195855, -97.756467
Does anyone recognize this format and how to convert to lat/lon?
coordinate-system coordinates
edited 2 days ago
Kirk Kuykendall
21.7k657145
asked Apr 19 at 18:25
Anthony StokesAnthony Stokes
1047
|
show 4 more comments
I have some coordinates from an old Oracle database (AMANDA) and I don't recognize the format.
For example, converting these coordinates: 3109020, 10114224
Should result in a point near latitude, longitude: 30.195855, -97.756467
Does anyone recognize this format and how to convert to lat/lon?
coordinate-system coordinates
edited 2 days ago
Kirk Kuykendall
21.7k657145
asked Apr 19 at 18:25
Anthony StokesAnthony Stokes
1047
Please post the lat/long (and datum) of "a location" so that people can test their guess.
– Kirk Kuykendall
Apr 19 at 18:43
The only information I have is that these coordinates (3109020, 10114224) should point to 2103 LEMON DRIVE, AUSTIN, Texas, 78744, USA.
– Anthony Stokes
Apr 19 at 19:05
The lat/long of that address is 30.195775, -97.756602. Google Maps.
– csk
Apr 19 at 19:43
Sure seems like there should be a web site/service where you can enter x,y long/lat, push a button, then be presented with a list of possible coordinate systems.
– Kirk Kuykendall
Apr 19 at 19:55
2
@KirkKuykendall There is an online tool called Projfinder that works well with registered coordinate systems and takes your x, y as input, and a map display to reference the location. I gave it a try in this specific case, but it did not find a match unfortunately.
– FSimardGIS
2 days ago
|
show 4 more comments
I have some coordinates from an old Oracle database (AMANDA) and I don't recognize the format.
For example, converting these coordinates: 3109020, 10114224
Should result in a point near latitude, longitude: 30.195855, -97.756467
Does anyone recognize this format and how to convert to lat/lon?
coordinate-system coordinates
edited 2 days ago
Kirk Kuykendall
21.7k657145
asked Apr 19 at 18:25
Anthony StokesAnthony Stokes
1047
I have some coordinates from an old Oracle database (AMANDA) and I don't recognize the format.
For example, converting these coordinates: 3109020, 10114224
Should result in a point near latitude, longitude: 30.195855, -97.756467
Does anyone recognize this format and how to convert to lat/lon?
coordinate-system coordinates
coordinate-system coordinates
edited 2 days ago
Kirk Kuykendall
21.7k657145
asked Apr 19 at 18:25
Anthony StokesAnthony Stokes
1047
edited 2 days ago
Kirk Kuykendall
21.7k657145
asked Apr 19 at 18:25
Anthony StokesAnthony Stokes
1047
edited 2 days ago
Kirk Kuykendall
21.7k657145
edited 2 days ago
Kirk Kuykendall
21.7k657145
edited 2 days ago
Kirk Kuykendall
21.7k657145
21.7k657145
asked Apr 19 at 18:25
Anthony StokesAnthony Stokes
1047
asked Apr 19 at 18:25
Anthony StokesAnthony Stokes
1047
asked Apr 19 at 18:25
Anthony StokesAnthony Stokes
1047
1047
Please post the lat/long (and datum) of "a location" so that people can test their guess.
– Kirk Kuykendall
Apr 19 at 18:43
The only information I have is that these coordinates (3109020, 10114224) should point to 2103 LEMON DRIVE, AUSTIN, Texas, 78744, USA.
– Anthony Stokes
Apr 19 at 19:05
The lat/long of that address is 30.195775, -97.756602. Google Maps.
– csk
Apr 19 at 19:43
Sure seems like there should be a web site/service where you can enter x,y long/lat, push a button, then be presented with a list of possible coordinate systems.
– Kirk Kuykendall
Apr 19 at 19:55
2
@KirkKuykendall There is an online tool called Projfinder that works well with registered coordinate systems and takes your x, y as input, and a map display to reference the location. I gave it a try in this specific case, but it did not find a match unfortunately.
– FSimardGIS
2 days ago
|
show 4 more comments
Please post the lat/long (and datum) of "a location" so that people can test their guess.
– Kirk Kuykendall
Apr 19 at 18:43
The only information I have is that these coordinates (3109020, 10114224) should point to 2103 LEMON DRIVE, AUSTIN, Texas, 78744, USA.
– Anthony Stokes
Apr 19 at 19:05
The lat/long of that address is 30.195775, -97.756602. Google Maps.
– csk
Apr 19 at 19:43
Sure seems like there should be a web site/service where you can enter x,y long/lat, push a button, then be presented with a list of possible coordinate systems.
– Kirk Kuykendall
Apr 19 at 19:55
2
@KirkKuykendall There is an online tool called Projfinder that works well with registered coordinate systems and takes your x, y as input, and a map display to reference the location. I gave it a try in this specific case, but it did not find a match unfortunately.
– FSimardGIS
2 days ago
Please post the lat/long (and datum) of "a location" so that people can test their guess.
– Kirk Kuykendall
Apr 19 at 18:43
Please post the lat/long (and datum) of "a location" so that people can test their guess.
– Kirk Kuykendall
Apr 19 at 18:43
The only information I have is that these coordinates (3109020, 10114224) should point to 2103 LEMON DRIVE, AUSTIN, Texas, 78744, USA.
– Anthony Stokes
Apr 19 at 19:05
The only information I have is that these coordinates (3109020, 10114224) should point to 2103 LEMON DRIVE, AUSTIN, Texas, 78744, USA.
– Anthony Stokes
Apr 19 at 19:05
The lat/long of that address is 30.195775, -97.756602. Google Maps.
– csk
Apr 19 at 19:43
The lat/long of that address is 30.195775, -97.756602. Google Maps.
– csk
Apr 19 at 19:43
Sure seems like there should be a web site/service where you can enter x,y long/lat, push a button, then be presented with a list of possible coordinate systems.
– Kirk Kuykendall
Apr 19 at 19:55
Sure seems like there should be a web site/service where you can enter x,y long/lat, push a button, then be presented with a list of possible coordinate systems.
– Kirk Kuykendall
Apr 19 at 19:55
2
2
@KirkKuykendall There is an online tool called Projfinder that works well with registered coordinate systems and takes your x, y as input, and a map display to reference the location. I gave it a try in this specific case, but it did not find a match unfortunately.
– FSimardGIS
2 days ago
@KirkKuykendall There is an online tool called Projfinder that works well with registered coordinate systems and takes your x, y as input, and a map display to reference the location. I gave it a try in this specific case, but it did not find a match unfortunately.
– FSimardGIS
2 days ago
|
show 4 more comments
1 Answer
1
active
oldest
votes
That looks like a projected Coordinate System, with units in either feet or meters.
You can figure out what coordinate system your points are in by trying out different coordinate conversions on this website.
Enter the lat/long of a coordinate, choose the target CRS, and click convert. Try out different target CRS's until the conversion gives you the known coordinates.
Given the location, start by testing CRS's with Texas in their name, eg:
- EPSG 3082, NAD83 / Texas Centric Lambert Conformal
- EPSG 3081, NAD83 / Texas State Mapping System
- etc
It shouldn't take long to test all 10 Texas-specific CRS's. If none of them work, expand the search to US-specific CRS's, and North American-specific CRS's.
Remember that the US often uses US survey feet or (international) feet for the unit of measure. When you see large numbers like that, check the foot-based coordinate reference systems first. Austin falls into the Texas Central zone in the State Plane Coordinate System, maybe try that one first. You will find it difficult to determine which geographic CRS is being used. It's probably one of the NAD 83 ones, but there have been several re-adjustments and coordinate differ at the centimeter to decimeter-level.
An alternate approach is to figure out where the origin of the CRS is. Then you can limit your search to CRS's with that origin. Find the origin by measuring from the known point, 3109020 units to the west and 10114224 to the south. Since the data is in the US, you'll have to test it with both meters and feet. If the origin is on the equator you're probably looking at a UTM projection.
edited Apr 19 at 23:12
mkennedy
15.8k13156
answered Apr 19 at 20:04
cskcsk
10.2k1135
I tried all of the Texas conversions and US conversions that seemed relevant. No luck as of yet. I'll try second method and report back.
– Anthony Stokes
2 days ago
I had another hypothesis - what if these coordinates are supposed to have decimal places in them? The lat/long point at (31.09020N, 101.14224W) is in Texas. It's a couple of hundred miles WNW of where the corresponding point is supposed to be, though.
– csk
yesterday
add a comment |
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That looks like a projected Coordinate System, with units in either feet or meters.
You can figure out what coordinate system your points are in by trying out different coordinate conversions on this website.
Enter the lat/long of a coordinate, choose the target CRS, and click convert. Try out different target CRS's until the conversion gives you the known coordinates.
Given the location, start by testing CRS's with Texas in their name, eg:
- EPSG 3082, NAD83 / Texas Centric Lambert Conformal
- EPSG 3081, NAD83 / Texas State Mapping System
- etc
It shouldn't take long to test all 10 Texas-specific CRS's. If none of them work, expand the search to US-specific CRS's, and North American-specific CRS's.
Remember that the US often uses US survey feet or (international) feet for the unit of measure. When you see large numbers like that, check the foot-based coordinate reference systems first. Austin falls into the Texas Central zone in the State Plane Coordinate System, maybe try that one first. You will find it difficult to determine which geographic CRS is being used. It's probably one of the NAD 83 ones, but there have been several re-adjustments and coordinate differ at the centimeter to decimeter-level.
An alternate approach is to figure out where the origin of the CRS is. Then you can limit your search to CRS's with that origin. Find the origin by measuring from the known point, 3109020 units to the west and 10114224 to the south. Since the data is in the US, you'll have to test it with both meters and feet. If the origin is on the equator you're probably looking at a UTM projection.
edited Apr 19 at 23:12
mkennedy
15.8k13156
answered Apr 19 at 20:04
cskcsk
10.2k1135
I tried all of the Texas conversions and US conversions that seemed relevant. No luck as of yet. I'll try second method and report back.
– Anthony Stokes
2 days ago
I had another hypothesis - what if these coordinates are supposed to have decimal places in them? The lat/long point at (31.09020N, 101.14224W) is in Texas. It's a couple of hundred miles WNW of where the corresponding point is supposed to be, though.
– csk
yesterday
add a comment |
That looks like a projected Coordinate System, with units in either feet or meters.
You can figure out what coordinate system your points are in by trying out different coordinate conversions on this website.
Enter the lat/long of a coordinate, choose the target CRS, and click convert. Try out different target CRS's until the conversion gives you the known coordinates.
Given the location, start by testing CRS's with Texas in their name, eg:
- EPSG 3082, NAD83 / Texas Centric Lambert Conformal
- EPSG 3081, NAD83 / Texas State Mapping System
- etc
It shouldn't take long to test all 10 Texas-specific CRS's. If none of them work, expand the search to US-specific CRS's, and North American-specific CRS's.
Remember that the US often uses US survey feet or (international) feet for the unit of measure. When you see large numbers like that, check the foot-based coordinate reference systems first. Austin falls into the Texas Central zone in the State Plane Coordinate System, maybe try that one first. You will find it difficult to determine which geographic CRS is being used. It's probably one of the NAD 83 ones, but there have been several re-adjustments and coordinate differ at the centimeter to decimeter-level.
An alternate approach is to figure out where the origin of the CRS is. Then you can limit your search to CRS's with that origin. Find the origin by measuring from the known point, 3109020 units to the west and 10114224 to the south. Since the data is in the US, you'll have to test it with both meters and feet. If the origin is on the equator you're probably looking at a UTM projection.
edited Apr 19 at 23:12
mkennedy
15.8k13156
answered Apr 19 at 20:04
cskcsk
10.2k1135
I tried all of the Texas conversions and US conversions that seemed relevant. No luck as of yet. I'll try second method and report back.
– Anthony Stokes
2 days ago
I had another hypothesis - what if these coordinates are supposed to have decimal places in them? The lat/long point at (31.09020N, 101.14224W) is in Texas. It's a couple of hundred miles WNW of where the corresponding point is supposed to be, though.
– csk
yesterday
add a comment |
That looks like a projected Coordinate System, with units in either feet or meters.
You can figure out what coordinate system your points are in by trying out different coordinate conversions on this website.
Enter the lat/long of a coordinate, choose the target CRS, and click convert. Try out different target CRS's until the conversion gives you the known coordinates.
Given the location, start by testing CRS's with Texas in their name, eg:
- EPSG 3082, NAD83 / Texas Centric Lambert Conformal
- EPSG 3081, NAD83 / Texas State Mapping System
- etc
It shouldn't take long to test all 10 Texas-specific CRS's. If none of them work, expand the search to US-specific CRS's, and North American-specific CRS's.
Remember that the US often uses US survey feet or (international) feet for the unit of measure. When you see large numbers like that, check the foot-based coordinate reference systems first. Austin falls into the Texas Central zone in the State Plane Coordinate System, maybe try that one first. You will find it difficult to determine which geographic CRS is being used. It's probably one of the NAD 83 ones, but there have been several re-adjustments and coordinate differ at the centimeter to decimeter-level.
An alternate approach is to figure out where the origin of the CRS is. Then you can limit your search to CRS's with that origin. Find the origin by measuring from the known point, 3109020 units to the west and 10114224 to the south. Since the data is in the US, you'll have to test it with both meters and feet. If the origin is on the equator you're probably looking at a UTM projection.
edited Apr 19 at 23:12
mkennedy
15.8k13156
answered Apr 19 at 20:04
cskcsk
10.2k1135
That looks like a projected Coordinate System, with units in either feet or meters.
You can figure out what coordinate system your points are in by trying out different coordinate conversions on this website.
Enter the lat/long of a coordinate, choose the target CRS, and click convert. Try out different target CRS's until the conversion gives you the known coordinates.
Given the location, start by testing CRS's with Texas in their name, eg:
- EPSG 3082, NAD83 / Texas Centric Lambert Conformal
- EPSG 3081, NAD83 / Texas State Mapping System
- etc
It shouldn't take long to test all 10 Texas-specific CRS's. If none of them work, expand the search to US-specific CRS's, and North American-specific CRS's.
Remember that the US often uses US survey feet or (international) feet for the unit of measure. When you see large numbers like that, check the foot-based coordinate reference systems first. Austin falls into the Texas Central zone in the State Plane Coordinate System, maybe try that one first. You will find it difficult to determine which geographic CRS is being used. It's probably one of the NAD 83 ones, but there have been several re-adjustments and coordinate differ at the centimeter to decimeter-level.
An alternate approach is to figure out where the origin of the CRS is. Then you can limit your search to CRS's with that origin. Find the origin by measuring from the known point, 3109020 units to the west and 10114224 to the south. Since the data is in the US, you'll have to test it with both meters and feet. If the origin is on the equator you're probably looking at a UTM projection.
edited Apr 19 at 23:12
mkennedy
15.8k13156
answered Apr 19 at 20:04
cskcsk
10.2k1135
edited Apr 19 at 23:12
mkennedy
15.8k13156
edited Apr 19 at 23:12
mkennedy
15.8k13156
edited Apr 19 at 23:12
mkennedy
15.8k13156
15.8k13156
answered Apr 19 at 20:04
cskcsk
10.2k1135
answered Apr 19 at 20:04
cskcsk
10.2k1135
answered Apr 19 at 20:04
cskcsk
10.2k1135
10.2k1135
I tried all of the Texas conversions and US conversions that seemed relevant. No luck as of yet. I'll try second method and report back.
– Anthony Stokes
2 days ago
I had another hypothesis - what if these coordinates are supposed to have decimal places in them? The lat/long point at (31.09020N, 101.14224W) is in Texas. It's a couple of hundred miles WNW of where the corresponding point is supposed to be, though.
– csk
yesterday
add a comment |
I tried all of the Texas conversions and US conversions that seemed relevant. No luck as of yet. I'll try second method and report back.
– Anthony Stokes
2 days ago
I had another hypothesis - what if these coordinates are supposed to have decimal places in them? The lat/long point at (31.09020N, 101.14224W) is in Texas. It's a couple of hundred miles WNW of where the corresponding point is supposed to be, though.
– csk
yesterday
I tried all of the Texas conversions and US conversions that seemed relevant. No luck as of yet. I'll try second method and report back.
– Anthony Stokes
2 days ago
I tried all of the Texas conversions and US conversions that seemed relevant. No luck as of yet. I'll try second method and report back.
– Anthony Stokes
2 days ago
I had another hypothesis - what if these coordinates are supposed to have decimal places in them? The lat/long point at (31.09020N, 101.14224W) is in Texas. It's a couple of hundred miles WNW of where the corresponding point is supposed to be, though.
– csk
yesterday
I had another hypothesis - what if these coordinates are supposed to have decimal places in them? The lat/long point at (31.09020N, 101.14224W) is in Texas. It's a couple of hundred miles WNW of where the corresponding point is supposed to be, though.
– csk
yesterday
add a comment |
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Please post the lat/long (and datum) of "a location" so that people can test their guess.
– Kirk Kuykendall
Apr 19 at 18:43
The only information I have is that these coordinates (3109020, 10114224) should point to 2103 LEMON DRIVE, AUSTIN, Texas, 78744, USA.
– Anthony Stokes
Apr 19 at 19:05
The lat/long of that address is 30.195775, -97.756602. Google Maps.
– csk
Apr 19 at 19:43
Sure seems like there should be a web site/service where you can enter x,y long/lat, push a button, then be presented with a list of possible coordinate systems.
– Kirk Kuykendall
Apr 19 at 19:55
2
@KirkKuykendall There is an online tool called Projfinder that works well with registered coordinate systems and takes your x, y as input, and a map display to reference the location. I gave it a try in this specific case, but it did not find a match unfortunately.
– FSimardGIS
2 days ago