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.

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1answer
51 views

Adding geometry to QgsVectorLayer with lon/lat coordinates

I'm creating a custom Qt app that uses pyqgis for showing data on maps. I have successfully created a map canvas that shows a world map from a WMS server. Now I'd like to overlay data on this map. ...
3
votes
3answers
224 views

Which equal-area projection to use for UK?

I have a bunch of UK polygons that are saved in my PostGIS database as WGS84 projection. I would like to calculate the area of these polygons using st_area. According to this answer I can save these ...
0
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2answers
36 views

Openlayers2 checking coordinate system of WKT or KML file

In my Openlayers2 based project I give the possibility for users to upload their own features in KML file or with a WKT string. I only want to accept features with ESPG:4326 coordinates. Otherwise a ...
3
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1answer
44 views

Where are the elements of an ArcGIS SpatialReference as a string representation defined?

This seems absurd, but I cannot find any documentation on what the various elements mean in the string representation of an ArcGIS SpatialReference object. The first part is obviously the Well Known ...
2
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2answers
114 views

Adding * .prj file to output via Python script tool that creates fishnet?

I'm a new python user. I wanted to make a tool box like fishnet in ArcGIS 10.2. Everything, works fine. However, at output there is no .prj file, although spatial reference was defined at the tool. ...
4
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1answer
47 views

proj.4 definition for (obsolete) UK War Office “Italy South” grid

I'm helping a friend convert his late father's war diary coordinates to WGS84. I have a proj.4 definition that appears to work in QGIS, but if I transform a scanned map with gdalwarp, it's not even ...
2
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1answer
57 views

PostGIS GML round trip confusion

I've investigated the issue of coordinate order in GML and each time I think I've got it but I find my self confused once again. I think some of my confusion may be to do with PostGIS. Doing a ...
3
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2answers
52 views

Compensating lat/long offsets after conversions

In my application I am doing conversions between two different formats of data. First format is a simple one containing NE and SW coordinates for a given rectangular area: area = { "sw": { ...
3
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2answers
46 views

Points in Polygon Query but having CRS issues (QGIS)

I have two files: A csv file that has lat longs listed for points. A shapefile that contains England NHS CCG boundaries (which usually uses the British National Grid). When I 'add a delimited ...
1
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0answers
36 views

Why do I get unexpected coordinates after converting EPSG 102014 to EPSG 4326?

I have this Europe map (EPSG 102014) and I am trying to convert it to EPSG 4326 using geoconverter.hsr.ch After the conversion is done, I expect that coordinates are in the range of -180,180 and ...
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2answers
32 views

Unknown Coordinate System Cadastral?

I have point data from a proprietary source that came in a coordinate system I do not recognize. Here is an example: Lat: 35205357 Long: -11.15933 It looks like a combination of UTMs and ...
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2answers
41 views

How to specify a map units line wider than 100000 units

Sorry if this is a very beginner question, but I can't seem to find an answer online by searching. Is there a way to increase the size of the "map units"? I'm trying to draw lines attached to my ...
3
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1answer
92 views

Reprojecting between NAD27 and WGS 84 part III

I am trying to perform a reprojection for data with datum Nad27 to WGS84 datum. According to AndreJ in some previous questions in Stackexchange (CRS reprojection for instance) QGIS uses internally by ...
3
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2answers
106 views

CRS reprojection

I am trying to change the CRS of one shapefile that is originally in NAD27 to WGS84 in Qgis 2.6. When I proceed to make the change, I still continue to see the file in UTM coordinates... I've tried to ...
0
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1answer
24 views

problem changing CRS of a shapefile [duplicate]

I am trying to change the CRS of one shapefile that is originally in NAD27 to WGS84. When I proceed to make the change, I still continue to see the file in UTM coordinates... I've tried to save the ...
0
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1answer
77 views

Is there an EPSG code to specify WGS84 in (lon,lat) order instead of (lat,lon)?

Is there an EPSG code like EPSG:4326 or EPSG:4329, but that specifies (lon,lat) order instead of (lat,lon)? I've tried exploring the websites http://spatialreference.org and ...
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0answers
84 views

Points In Attribute Table Will Not Display In Data View

I am using ArcMap 10.2.2 and opening a shapefile of points. My issues is this: the points do not appear in the data view. In other words, I cannot view the points in the display where they usually ...
2
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1answer
18 views

Grids not originating from 2D parameter spaces

Is there any specific name for grids on sphere (or geoid, or any other manifold/surface) that do not originate from 2D parameter space? For example generating a grid on a sphere using icosahedron ...
0
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1answer
38 views

Copy Feature Class to Feature Dataset

I try to copy a feature class to a feature data set but i get this massage see the screen shot , what might be the issue here?
1
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1answer
45 views

Which parameter and Data Type to set for spatial reference in ArcGIS Python script tool?

I developed a python script for user defined grid and I want to make a tool from this script. The problem I am facing is to set up parameter for spatial reference. I used GetParameterAsText ...
1
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1answer
77 views

Is there a way to change the QGIS default CRS?

I'm working in a UTM projection and bringing in dxf layers from a different program. The dxf files are all in the correct UTM coordinates already, but when I bring them in I need to change the CRS to ...
-1
votes
2answers
285 views

Formulae to convert WGS84 coordinates (B,L) to spherical coordinates (phi,lambda)?

How to convert WGS84 coordinates(B,L) to spherical coordinates(phi,lambda)? I Need Formulae? the thing I'm wondering seems quite simple but I've been searching through internet and library of my ...
1
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0answers
54 views

How to solve coordinate differences between packages

I have two maps generated by two different methods. The first, I used maps package and the function map() and symbols(). On the other hand, I used the ggmap package with the ggmap() and geom_point() ...
0
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0answers
18 views

Why are Lat/Lon Coordinates often displayed as Lon/Lat in data sets? [duplicate]

Why are Lat/Lon Coordinates often displayed as Lon/Lat in data sets? Thanks in advanced!
0
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1answer
58 views

Creating a spatial reference in arcpy from projection name

I am using ArcGIS 10.2.2, Python 2.7. I want to create a spatial reference from the name of a projection, e.g. NAD_1983_BC_Environment_Albers, using the arcpy tool ...
3
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1answer
66 views

Unknown Spatial Reference after Georeferencing in ArcMap

I am trying to georeference an image base on another *.tif, after rectifying i still have my Image as unknown spatial reference. Does somebody know how I can fix it?
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0answers
70 views

Why can't gdal save CRS information to GeoJSON?

gdal fails to add CRS definitions to GeoJSON files in some cases. Try this, for example, from any linux terminal that has gdal installed: # download the data wget ...
1
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1answer
112 views

Checking whether Spatial Reference is Projected Coordinate System using ArcPy?

I'm modifying CreateFishnet in ArcGIS 10.1 using python.. I want to ask the user to input a projected coordinate as spatial reference. How can I check if the user didn't put geographic coordinate by ...
0
votes
1answer
74 views

Precision loss when trying to select the latitude and logitude coordinates from an sde.ST_GEOMETRY using SDE.STX() and SDE.STY() functions

In an oracle 11g enterprise geodatabase I am trying the following: INSERT INTO MySTATION (STATION_ID, DB_VERSION_NU, CREATED_DT, MOD_DT, SHAPE) VALUES (1, 0, sysdate, sysdate, ...
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0answers
30 views

Is spatial reference information suceptible to be translated?

In an English application that uses ArcObjects API from ESRI, the information regards the spatial reference system is displayed in English as the API gives it. If the application is translated to ...
1
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1answer
85 views

How to set the Measure Tool Ellipsoid Default Behavior?

Using QGIS 2.6.0 Brighton, I want to overlay a shapefile (EPSG: 26910, Nad83 UTM10) over OpenLayers Google Satellite (EPSG: 3857, Pseudo Mercator), and reliably measure distances. Furthermore, I want ...
1
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1answer
94 views

Definition of the WGS 84

Hi i'm having some trouble getting the following things straight with , does this make sense? EPSG:4326 WGS84 Coordinate system: WGS84 Datum/Ellipsoid: WGS84 Projection: longlat
2
votes
1answer
104 views

How to export projected layers with relative cartesian (x,y) coordinates in ArcGIS

I've got several GIS datasets for a national park in South Africa (elevation map, water points, elephant density and such). I have access to the full ArcGIS Desktop Advanced suite, but am no GIS ...
4
votes
2answers
1k views

Misplaced Google Maps with OpenLayers plugin in QGIS?

I was using Google Maps with OpenLayers plugin in QGIS with my vector layer with projection EPSG:4326 with google map projection EPSG:3857 and "on the fly" transformation enabled. It was matching ...
1
vote
1answer
354 views

How to convert local Coordinates to lat/long Coordinates

I'm using QGIS to do some data analysis and visualization for my newspaper. I received some x,y coordinates from the City of Minneapolis that I can use to build some static graphical maps shaped like ...
0
votes
1answer
40 views

How to re-reproject coordinates that are coming from GeoServer

I have a GeoJSON as follows: ...
1
vote
0answers
91 views

Longitude and Latitude Mixed Up on Map

I am trying to map a WFS layer with data originally coming from a PostGIS table, and using a OpenLayers 3. At some point in this process, I believe the longitude and latitude coordinates are getting ...
2
votes
1answer
71 views

J2000 to WGS84 in QGIS?

How to transform Earth-Centered Inertial J2000 CRS to WGS84 CRS in QGIS? I searched J2000 in spatialreference.org, however nothing found. I don't know the proj4 string of J2000. Any advice would be ...
0
votes
1answer
36 views

Will Processing without a Spatial Reference cause Issues?

I was given a bunch of ASCII files that I needed to convert to raster and then create maps from. For some maps I had to do a simple difference calculation between two rasters (did this in ArcMap). ...
0
votes
0answers
28 views

Projection of COSMO-EU?

I have data points of COSMO-EU data stored in WGS84 coordinates. Now I try to transform them into coordinate system where the points becomming arranged to a regular grid. Does anybody knows the Proj4- ...
1
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3answers
119 views

ArcMap get coordinate system

How can I get current coordinate system type from opened file? I tried var coord = ESRI.ArcGIS.Geometry.esriSRProjCSType.... ???; Can you tell me, what should I do? UPD: I need to save current map ...
2
votes
1answer
72 views

Coordinate display in Terrasync

I'm using Terrasync on a Trimble GeoXH 6000 - set for WGS 84 and UTM. It acquires satellites fine, but instead of displaying my current location in UTMS, the skyplot screen shows "12RVU" and then a ...
0
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0answers
71 views

How to create a map in Pulkovo 1942 with grid?

I have a problem with coordinates when I change projection. With WGS 84 it's fine, I have normal, geographic coordinates. But when I'm changing to Pulkovo 1942 (I need a map of Poland), coordinates ...
1
vote
1answer
52 views

How to get spatial reference in ArcGIS Server identify response

I'm using the ArcGIS API for JavaScript to query features in a web map. After sending an identify request to my ArcGIS Server 10.2.2 Map Service (added as ArcGISDynamicMapServiceLayer, the response is ...
1
vote
1answer
63 views

Why does ArcGIS Online project my files right where they should be but, ArcGIS for desktop does not

When loading shapefiles into Arc Map 10.2.2 I get the message saying "unknown spatial reference", then my files are not projected where they should be and are usually too small to see regardless how ...
1
vote
2answers
131 views

Convert a grid file from one set of coordinate systems to another

I have a grid file in a certain coordinate system. I'd like to change it so I have the same grid in geographic lat/long based on WGS84. This seems like something that gdal can tackle quite easily ...
1
vote
1answer
254 views

Set custom spatial reference to base map in arcgis javascript api

How can I set my spatial reference to the base map in arcgis api. I want to change the default spatial reference.
2
votes
1answer
151 views

Convert Garmin or iPhone weird GPS Coordinates

I am trying to find a way to convert over 500 locations I have saved in my Garmin iPhone GPS app (iPhone 4S using Garmin StreetPilot v2.7), but I can't find a way to convert these coordinates as they ...
1
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1answer
66 views

ArcGIS feature class interprets Latitude/Longitude in meters instead of degress

I wanted to tie toegther some data from my database table to an ArcGis map. The table contained an Object_Id, GIS_LATITUDE and GIS_LONGITUDE column. I added the feature layer based on the table (x as ...
2
votes
1answer
65 views

Why are the coordinates in the dataset I use are different?

I have data on specific addresses of companies in the Netherlands. The dataset also provides the coordinates but they look different from what I am used to see. I converted some of the addresses into ...