Questions tagged [coordinate-system]
A reference framework consisting of a set of points, lines, and/or surfaces, and a set of rules, used to define the positions of points in space in either two or three dimensions.
5,608
questions
1
vote
0answers
19 views
How to custom format my coordinate grid?
I am custom formatting my coordinate grid.
Is there a way to change the following formula so that the output comes with a decimal and suffix:
substr(@grid_number, length(@grid_number) -6,5)
The ...
1
vote
0answers
60 views
Invalid WKT polygon error
We are trying to load the data in Solr through CSV file. The data is in the below format.
WKT(Its one column)
POLYGON ((44225.300000005 61616.3199999181 0.0, 43615.3000000049 61616.3199999181 0.0, ...
1
vote
1answer
44 views
Getting Projection Code (EPSG) from Coordinates and known location
I have Coordinates (x=3381438.573, y=5794542.432) and a location (somewhere south of Berlin). Is there a way to find out the Projection code this data was defined with? A website would be nice.
1
vote
0answers
39 views
Move polygon to new location (find new lat-lng coordinates)
I need to move my polygon (region of geographical area) with 4 different (O1, O2, O3 and O4) lat-lng coordinates (as shown in the figure) to another place, so that I get new values of all 4 lat-lng ...
1
vote
1answer
28 views
Projecting as USA_Contiguous_Albers_Equal_Area_Conic_USGS in QGIS?
Is it possible to project EPSG: 6350 (NAD83 (2011)) as WKID: 102039 (USA_Contiguous_Albers_Equal_Area_Conic_USGS) in QGIS?
There is no EPSG code and I'm unsure how to create a custom CRS.
0
votes
0answers
11 views
Performing cs2cs datum transformation using GDAL?
I'm using GDAL 3 to perform datum transformations. I'm trying to transform coordinates from a local datum to WGS84 using the following command:
cs2cs +proj=latlong +ellps=clrk80 +towgs84=-166,-15,204 ...
2
votes
1answer
43 views
How to set CRS of many rasters in R
I have a set of rasters that I've had trouble reprojecting to Robinson. It fails without errors, the crs changes but the extent doesn't convert to metres and it doesn't plot properly. Sources say EPSG:...
0
votes
1answer
31 views
MGI_Lambert to WGS48 UTM33 transformation problem
I tried to reproject a raster (DEM) with MGI_Lambert Projection (Austria) into WGS48 UTM33 Zone. I did it with ArcMap 10.6 using the recommended MGI_To_WGS_1984_3 transformation aswell as a ...
1
vote
1answer
50 views
Convert decimal degrees to meters QGIS
I am working in QGIS 3.4.8-Madeira on MacOS 10.14. I simply want to create a buffer on a point shapefile, but the layer is not being read in UTM but in degrees. I understand this is a common question ...
0
votes
0answers
25 views
OpenLayers 5: requesting WMS layer without CRS like in OpenLayers 2
Back in the day of OpenLayers 2 displaying a WMS layer involved something like:
var map = new OpenLayers.Map(
'map',
{maxExtent: new OpenLayers.Bounds(
-20037500.000000,-13347182....
3
votes
1answer
58 views
Adding CSV file with lat/long to map in different CRS in QGIS
I'm very new to QGIS, so I'm sure the solution to this is common sense.
I have a map in the WGS 84 zone 58S CRS and am trying to add lat/long coordinates from a text file to it. The issue: the WGS 84 ...
1
vote
1answer
42 views
Coordinate system confusion in QGIS 3
I'm using QGIS 3.4 to consult the Italian cadraste maps, using the Government's WMS service available here: https://wms.cartografia.agenziaentrate.gov.it/inspire/wms/ows01.php
As the technical ...
2
votes
1answer
47 views
Identifying coordinate system of historical map for Arctic Ocean?
I have a historical map (Arctic Ocean) with unknown CRS system.
In order to compare it with my results, I have to merge them somehow.
Could someone suggest the closest possible coordinate ...
1
vote
1answer
66 views
Buffering in WGS 84 / Pseudo-Mercator 3857 using QGIS?
I have read all the buffer issues topics but haven't found solution to my problem.
I have two layers:
Border layer of Tokyo ward - WGS 84 / Pseudo-Mercator 3857
A CSV text layer with x,y ...
3
votes
1answer
45 views
Using a projection other than Mercator with proj4js 2.5 and OpenLayers 5.3
I am following the OpenLayers FAQ regarding the use of coordinate systems that do not rely on the infamous Mercator projection. I thus produced a very small HTML with a simple example that could be ...
2
votes
0answers
16 views
Raster:area() in R before and after projecting data
I have the following snippet of code:
tracts<-readOGR('data/.')
proj4string(tracts)
"+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +...
1
vote
1answer
19 views
Cast 3D geometry as 2D for ogr2ogr GeoJSON
I'm trying to take a shapefile that can be downloaded here (specifically the shapefile titled PVS_19_v1_vtd_21031.shp), convert it from EPSG:4269 to EPSG:3857, and output the GeoJSON into CSV with ...
0
votes
1answer
11 views
Batch converting NAD83 Z12 to NAD83 Z13
I have a need to to convert a CSV file that was surveyed in NAD83 Zone 12 to NAD83 Zone 13 coordinates, is there an online tool that can do this for me?
1
vote
0answers
40 views
Measuring wrong, EPSG:27700 in QGIS3.6
If "enable on the fly" is on and the CRS changes at all during the lifetime of a project then seemingly, it refuses to measure (using the measure tool I just get 0.00000). So new project with all the ...
0
votes
0answers
54 views
Convert WGS 84 Coordinates to Arc 1950 coordinates
How can I convert WGS 84 coordinates to [Arc 1950][35s] coordinates?
e.g
S12.14127 E25.96643
S12.23535 E25.90588
S12.23535 E25.90588
S12.23859 E25.79461
S12.27073 E25.66638
0
votes
2answers
47 views
QGIS changing map options distance units
I want to change the map distance units option in QGIS from metres to centimetres. I am currently using projection British National Grid EPSG 27700. I would like the print composer to print a map ...
1
vote
1answer
22 views
Adequate proj4string for ETRS89
I am currently working with spatial data in R using sp When I used WGS84-referenced coordinates, I used to specify it by setting the proj4string to:
+proj=utm +zone=18 +datum=WGS84 +units=m +no_defs +...
0
votes
0answers
49 views
Creating custom projection using provided Helmert Parameters and ArcMap?
I am using ArcMap 10.5.1.
I need to transform coordinates in ArcMap from the a PCS based on Cape Lo23 to PCS Hartebeesthoek Lo23 and vice versa on a fairly regular basis.
I am based in South Africa ...
0
votes
0answers
17 views
GPS coord to SVG coords
I am trying to make an interrative map using SVG and I need to implement a coordinates system. So I look at http://jsfiddle.net/an3BZ/145/ but I do not know how did he calculated those nortLat ,...
1
vote
0answers
46 views
QGIS CRS for small island based on transformation with large rotations and tm-projection
I am trying to create a CRS for QGIS based on a GPSsurvey and the related transformation and rotation parameters. Within OSGEO I defined a transformation and projection as follows:
cct +proj=pipeline ...
2
votes
3answers
43 views
Reprojecting from multiple USNG coordinates?
I cannot find a CRS description for the USNG to reproject coordinates that look like this: YD307682. YD denotes a square within the grid zone 48Q (Vietnam). There are thousands of those coordinates, ...
1
vote
1answer
28 views
Rotate raster in QGIS
I have two raster datasets of Antarctica, however, they do not match spatially as one of the raster should be rotates 90 degrees. Is there a way to do this in QGIS?
1
vote
0answers
34 views
Changing Map Coordinate System Changes in ArcGIS Pro Changes Azimuth
I am trying to create a label that will overlay a line in ArcGIS Pro, the layer is coming from a PostGIS database. The underlying materialized view for the label/symbol overlay is something like this: ...
1
vote
0answers
40 views
Is the Albers Equal Area projection only useful for calculating the area over small differences in longitude?
I've been trying to calculate the area of a map, given its WGS 84 coordinates, with the following code:
import pyproj
import shapely
import shapely.ops as ops
from shapely.geometry.polygon import ...
0
votes
2answers
48 views
CRS for old Falklands maps in QGIS?
Does anybody know which CRS should be selected when georeferencing a Falklands map made in 1961? The map itself says only:
Grid: UTM Zone 21
Projection: Transverse Mercator
Spheroid: International
...
1
vote
0answers
42 views
Map in QGIS is displayed tilted? [closed]
CRS is wgs 84 epsg:4326
Still the map and the data on screen is showing tilted.
1
vote
0answers
27 views
SQL server 2012 convert Multipolygon geometry to geography - GDA94 / MGA zone 55 coordinate reference system
Is there a way to convert geometry column value which has GDA94 / MGA zone 55 coordinate reference system into Geography value in SQL server 2012.
The layer is a multipolygon layer
We were having the ...
1
vote
0answers
25 views
Adding distance when buffering point geometry in a geodataframe?
I have 2 geodataframes that I want to combine. They the same fields/columns but different geometries (one is points, one is polygons).To do this I want to buffer the points slightly (like 10m or ...
1
vote
0answers
37 views
Converting from EPSG 25833 to WGS 4326 using QGIS? [duplicate]
I have a layer of Brandenburg (Germany) in EPSG 25833 which I want to tranfrom to EPSG 4326. Similar to this answer to Transforming shapefile to WGS:84 (EPSG: 4326) in QGIS?, I set the CRS to EPSG ...
2
votes
2answers
31 views
Generating a custom flat projection in pyproj
I have little experience with pyproj, but I want to achieve the following task:
I have a trajectory of a robot, given in lat/long coordinates which I want to convert to x/y Coordinates. And I want to ...
0
votes
1answer
23 views
Is Transformation Required for empty feature classes?
I am trying to change the projection system of 100+ feature classes from projected to WGS84 using Python.
I am exporting the geodatabase to xml (Schema only)
and changing the projection parameters in ...
0
votes
2answers
39 views
ESRI Clarity vs Google Maps satellite images, distortion due to elevation?
I have a couple of satellite images, each about 1 km square, of the same rock climbing area. One is from ESRI Clarity, the other from Google Maps. The Clarity image is projected to UTM and has a UTM ...
1
vote
1answer
29 views
Extracting pixel values for specific point locations in WGS 1984 / EPSG: 4326 image
I have a remote sensing image with GCS WGS 1984 / EPSG: 4326.
I need to extract pixel values from this image which corresponds to specific point locations. For that purpose, I defined these ...
0
votes
0answers
23 views
Projecting ArcGIS feature dataset containing relationship classes
I have a geodatabase with more then 50 feature classes and 60-70 tables.
The feature classes are inside a feature dataset which is using a projected cooridnate system.
There are 250+ relationship ...
1
vote
1answer
38 views
Generating custom projection in pyproj
I have little experience with pyproj, but I want to achieve the following task:
I have a trajectory of a robot, given in lat/long coordinates which I want to convert to x/y Coordinates. In aerospace ...
3
votes
3answers
57 views
QGIS unable to reproject
I have a CSV file with X/Y coordinates that I would like to reproject to have long/lat coordinates.
Unfortunatelly, reprojecting or setting CRS does not work.
I have a layer of polygons which is ...
0
votes
0answers
24 views
Getting std::bad_alloc save as NE_100m_land to EPSG3995 for reprojection from QGIS?
I have loaded ne_110m_land.shp into a new project in QGIS 3.4 running on Mac. I followed what seems to be the sequence in every tutorial to reproject this map. In this case I want to project the map ...
0
votes
0answers
61 views
OpenLayers coordinate system
I am using a Tile Layer for my map and XYZ for the source of this tile layer in OpenLayers. I am providing PNG files as Z/X/Y. I want to replicate the real world coordinates on my map. The files that ...
1
vote
0answers
20 views
Using local tangent plane projection in QGIS?
Is local tangent plane projection is a kind of gnomonic projection?
is it possible to define it as a custom projection in QGis?
0
votes
0answers
20 views
Custom metric projection definition in QGIS with reference point and azimuth [duplicate]
I need to create a custom CRS.
I have a reference point in UTM NAD83 18N, an azimuth (30) and the extent. The projection must be metric, I know I have to use PROJ4 but the language is not very ...
0
votes
0answers
37 views
Live re-projection of web services in ArcGIS Desktop
I am trying to provide an easy way for not-technically-literate members within my organization to access watershed subbasin delineations in ArcMap. My idea is to:
1) Pull this USGS web service into ...
1
vote
1answer
41 views
How to change the Coordinate System of an Existing Table in a GeoPackage?
While writing some data to a GeoPackage, I set the wrong Coordinate System.
The Actual Coordinates are in a Particular UTM System, but the Table has been set as having data in EPSG:4326.
How do I ...
2
votes
0answers
17 views
Updating local datum to latest ITRF?
I have read that Australia is updating its local reference frame.
If a small territory has a complete CORS GNSS network aligned to ITRF2000, does it need to update the CORS network to the latest ...
0
votes
1answer
39 views
Projection not changing in ArcMap after Project tool used?
I tried changing the shapefiles by projecting them by only using the Project tool and I made sure that the data frame properties were set to the correct projection. I see the properties of the ...
1
vote
1answer
24 views
Defining point location at EPSG 4326 image
I am new in the field and I would like to ask which is the correct way to define a point location for an image with EPSG 4326 crs.
I used QGIS software, and created a .csv file with the latitude - ...
