19
votes
Accepted
Why does the same UTM northing give different values when converted to latitude?
This is perfectly normal behaviour in a transverse Mercator projection. The fact that a specific northing does not match a specific latitude (except for the Equator itself) can be easily visualized.
...
- 3,746
17
votes
Accepted
Auto-select suitable UTM Zone based on Grid Intersection
There's the utm package, a bidirectional UTM-WGS84 converter for python.
It's able to convert a (latitude, longitude) tuple into an UTM coordinate:
import utm
utm.from_latlon(51.2, 7.5)
>>> (...
- 14.1k
16
votes
Accepted
EPSG code for UTM zone
The UTM zones and their respective EPSG codes cover the whole area of their respecive zone from the equator to 84N / 80S. These areas are subdivided by the letters from South to North, and these again ...
- 1,462
15
votes
Accepted
Which projection is this data in?
Obviously the data is in UTM32 including the number of the zone. You can strip the 32 in front of your x-coord away as it is explicitely given by the provided CRS. However QGIS should be able to deal ...
- 1,481
14
votes
Accepted
Layer disappears when changing from CRS in degrees to CRS in meters in QGIS
Do not use "Set CRS" within layer properties. This does not reproject your data. You only define the CRS there. Means: you tell QGIS that the layer is in a different CRS than it actually is.
...
- 31.1k
14
votes
Accepted
What is this UK coordinate system?
Any data you receive from the UK with out a specified CRS will almost certainly be in OSGB (EPSG:27700) which is the preferred CRS of our national mapping agency (OS).
Your data appears to be no ...
- 79k
13
votes
Reprojecting vector layer in QGIS
To reproject a vector layer (or a batch of layers) (i.e. recalculate the coordinates values for a new reference system) you must go to Menu > Processing > Toolbox (this will open a side window). ...
- 131
13
votes
Auto-select suitable UTM Zone based on Grid Intersection
Alright, the answer from Antonio above is definitely right and pointed me in the correct direction. Here is the complete code:
# convert_wgs_to_utm function, see https://stackoverflow.com/a/40140326/...
- 644
12
votes
Accepted
What does the U mean in UTM=(32, 'U')?
UTM 32U is one tile of the UTM 32N zone. This image from Wikipedia (here the link to the following image) should explain it clearly:
- 16k
12
votes
Accepted
Determining CRS from given point coordinate set
Also you can try using projfinder. For instance, when one paste provided coordinates (4581211.88, 5811848.94)
You will see several options. Then you may assume the CRS, which is mostlikely the "...
- 28.8k
11
votes
Accepted
Different origins of UTM projection
Both coordinates are the same. As you are in the Southern Hemisphere a False Northing (of +10000000m) is usually applied to eliminate the negatives.
The utm package applies the false Northing by ...
- 11.4k
11
votes
Accepted
Convert UTM zone into EPSG code
Use pyproj (version 2.2+):
from pyproj import CRS
# use PROJ string, assuming a default WGS84
crs = CRS.from_string('+proj=utm +zone=36 +south')
# or dictionary
crs = CRS.from_dict({'proj': 'utm', '...
- 41.3k
9
votes
Accepted
R: Return the UTM zone that a WGS84 point belongs to
Each UTM zone is 6 degrees wide, so you can get the zone number by looking at the longitude:
floor((longitude + 180) / 6) + 1
This assumes that you have longitude within [-180.0, 180.0).
- 41.3k
9
votes
Accepted
QGIS field calculator giving area in acres in layer / project that is in UTM
Since QGIS version 2.14, the '$area', '$length' and '$perimeter' options are calculated based on the unit settings defined under 'Project > Project Properties' (see the changelog as well as the ...
- 1,976
8
votes
Accepted
Displaying data from two UTM zones on one map?
I worked on updating some USGS quads, back in the 90s. It seemed like most of the style guidelines were published internally, long before the Internet, and never made it online.
It's fairly common ...
- 301
8
votes
Accepted
QGIS 3.6.1 problems with CRS
Following on Ian Turton's comment... Prior to performing ANY geometry calculations or analysis on a layer(s), the layer(s) MUST be 1) projected to the desired CRS, and 2) that CRS must be the same for ...
- 7,649
8
votes
Determining CRS from given point coordinate set
You can't determine the projection of a set of points just from the coordinates. Without some other information they are just random numbers. Go back to the data supplier and make them give you some ...
- 79k
8
votes
Determining CRS from given point coordinate set
It says right there in your column title "GK4" - which is for Gauss-Krüger Zone 4 (https://epsg.io/31468).
Another hint is the leading 4 on the X-coordinates.
An last but not least you ...
- 15k
7
votes
EPSG code for UTM zone
The latitude band is, strictly speaking, an MGRS thing, not a UTM thing. For UTM, all you need to know is which side of the equator you’re on, so for 29U, you can use EPSG:32629.
- 648
7
votes
Garmin FIT Coordinate System
For the latitudes and longitudes, you can divide the numbers by 11930465 (2^32 / 360) to get values in decimal degrees. The values seem to be stored in a signed 32-bit integer range, to represent the ...
- 3,746
7
votes
Converting table UTM coordinates to decimal lat-long in Attribute table using expression
You can this for "Long_DD":
x(transform(make_point("UTM_X","UTM_Y"),'EPSG:26916','EPSG:4326'))
and this for "Lat_DD":
y(transform(make_point("UTM_X",&...
- 31.1k
6
votes
Are ArcGIS' UTM zone designations simplified?
There are a number of gridding systems which start with UTM zones (which are just the 6 degree bands from the South Pole to the North Pole). The Military Grid Reference System (MGRS) is probably the ...
- 19.7k
6
votes
Accepted
Choosing UTM zone to use for large country?
You use a UTM zone when your area of interest fits completely within it or very nearly so. A UTM zone is not appropriate when your area of interest spans several zones such as in your case. A little ...
- 15.6k
6
votes
Accepted
Understanding UTM coordinate syntax in Zambia?
I suggest to use UTM zone 35. The points fall inside the Zambia borders:
For UTM Zone 34 and 36, the points would be outside of the country, shifted horizontally into the next UTM zone.
The "Grid" ...
- 76.1k
6
votes
Accepted
Combining UTM Zones?
If the extent of your map falls within 2 UTM zones, and you are required to use a UTM projection, you could either:
1) Choose the defined UTM zone that more of your map extent falls within. For ...
- 300
6
votes
Accepted
Transforming UTM layer to WGS using QGIS?
I'm using QGIS 2.18. Hope the steps below are helpful:
Make sure the shapefile with CRS "WGS84/UTM 17S EPSG:32717".
"Save as..". Save it into a new shapefile and change the CRS to WGS84.
Uncheck "add ...
- 687
6
votes
Where is UTM origin?
The answer depends on what you mean by "origin"
There are indeed 60 UTM zones numbered 1-60 and it starts at 180 W, so UTM zone 1 is used for longitude in [-180° -174°].
That being said, the origin ...
- 49.3k
6
votes
Accepted
How to make projected geometry and update it to postgresql?
As user30184 outlined:
It's a very common task, and there's plenty of documentation: ST_Transform.
To apply this, you need to figure out the EPSG codes of your projections.
UTM 35N probably is EPSG:...
- 1,739
6
votes
Auto-select suitable UTM Zone based on Grid Intersection
pyproj can assist with this using the database query functionality. This is simpler to use and more robust as it queries the area of use of the CRS, which handles some strangeness in some parts of the ...
- 6,851
6
votes
Setting correct UTM zone
No, you need 14N (N is for Northern Hemisphere). The "Q" is just a latitude band designation.
Latitude bands
Latitude bands are not a part of UTM, but rather a part of the military grid ...
- 59.8k
Only top scored, non community-wiki answers of a minimum length are eligible