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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2k views

How to display distance in meters (km) and not in Decimal Degrees in QGIS 2.4?

I am a GIS beginner, and I have a question about how to get the distance between two points in meters instead of decimal degree. In QGIS 2.4 I have a project with two point layers (in WGS84). From ...
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1answer
31 views

Convert WGS-1984-Pseudo Mercator to OSGB1936

I've imported UK wide coverage of ESC wind exposure data as a raster to ArcMap 10.2. The data is in WGS 1984 Pseudo Mercator which puts it way out against the UK OS standard grid. I can't get it to ...
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1answer
26 views

Unable to display Gauss Krüger- points

I have this list of sampling points and they told me to display them in ArcMap 10.3.1. This are Gauss Krüger coordinates of soil samples in Austria: From a table I use ->"Display XY data" and the ...
1
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1answer
23 views

Change project CRS = discard GCPs?

[Using QGIS 2.12 Lyon on Mac with OS X 10.10.5] I am struggling to georeference some old hydrographic survey maps that are in the form of TIFF files (.tif). If I open the georeferencer tool and set ...
3
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1answer
3k views

Add MicroStation dgn to ArcGIS/ArcCatalog 10.1

I'm an iOS programmer but new to using ArcGIS 10.1. I'm having a problem loading my MicroStation dgn file to ArcCatalog. I've connected the folder containing my MicroStation V8i roadway design dgn to ...
5
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1answer
300 views

Odd, old coordinate formatting from 1997 GPS

A typical coordinate is given as 68 35 067 N 123 54 817 W. I thought maybe some old timers could help me out. The author says in his report of the time that they were using a GPS, but I contacted ...
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1answer
48 views

Why is GeoTIFF squashed in WGS84 data frame of ArcMap?

I have a government-sourced geotiff which I have imported into ArcMap 10.4 as a raster basemap. In a TIFF viewer it displays correctly but in ArcMap it appears vertically squashed by roughly 20%. The ...
3
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2answers
30 views

Is there a SQL Server package similar to Oracle's SDO_CS?

I see that Oracle's SDO_CS package is able to do datum transformations. I'd like to do datum transformations in SQL Server. I searched, but have not found something like this for SQL Server. Is ...
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0answers
22 views

Sri Lanka paper map sheet key

I have a list of river gauging station locations, with the coordinates given in a local system: L/24(5.5*8.15) O/13(3.5*0.15) P/3(0.9*2.1) M/17(13.5*1.6) Presumably these coordinates are pointing ...
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2answers
70 views

Assign nearest raster cell value to point

I came across to a similar issue described in Finding nearest raster cell value based on vector point? I understand the proposed solution with Raster to Point and then Spatial Join with (for example) ...
2
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1answer
37 views

Converting UTM coordinates to WGS 84

I know the coordinates below are in UTM 36N (due to the EPSG code), and I can convert them with several websites online to wgs 84 and see them in Google Maps. However, been helplessly looking the ...
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1answer
2k views

Using a Select By Location in Python and Calculating a field based on what State Plane a point falls in

Here's what I have so far. Do I need to make another feature layer based on the selection? import arcpy arcpy.MakeFeatureLayer_management(r"PATH TO THE POINT", "point_lyr") arcpy....
2
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1answer
46 views

Creating a Line at a Length and Angle in WGS84 - Arcobjects

I need to draw a line at desired length(around 10-20 Km length) and a user entered angle. The map/data uses WGS84 coordinate system. So the measurement is geodesic. Here are the methods that I tried. ...
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2answers
102 views

How to read geographic coordinates when the Shapefile has a projected spatial reference

I have a polygon Shapefile and want to read the polygon's vertices using OGR and Python. The reference system of the file is projected. However, for further processing I need the geographic ...
0
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2answers
185 views

Spatial Reference Conversion

I am currently having some problem with the spatial reference projection on the map in Android. Basically I have a base map which is OneMap and all the coordinates stored in database is in SVY21 ...
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0answers
70 views

Basemap (Matlibplot) not plotting GPS WGS84 coordinates accurately

I have a list of lat,lon coordinates from Flickr pictures taken in Sydney (see here) When I plot these points on google maps, the locations are correct. However when I use my Basemap the results are ...
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0answers
22 views

NBI Coordinate Data Missing place-holding zeroes for DMS format

When working with National Bridge Inventory (NBI) coordinates I have found what appears to be an error in the raw data provided. I couldn't find any other mention of this specific error when ...
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1answer
39 views

Georeferenced images gives wrong scale

When I georeference satellite images with a CRS for my region (Hartebeeshoek94), I get a scale of 1:10 and larger. But when I use WGS84 the scale appears correct, e.g. 1:50 000. I am using QGIS v2.13....
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0answers
33 views

using gdal to convert from NAD83 to WGS84

I'm trying to use gdal in OSGEO4W to convert from NAD83 to WGS84. I'm very new to this so if you can, be as thorough as possible with your answers. The command I'm running is gdalwarp --config ...
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0answers
12 views

Create a Map scale for Geodesic circles

I need some guidance. I'm using an ESRI Base Map with Web Mercator projection(Wkid - 102110) in an web application using JavaScript. I'm drawing geodesic circles on the Base Map for a given radius ...
0
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2answers
4k views

Converting longitude and latitude coordinates to Indian Grid system?

How to convert lat/long coordinates to Indian Grid system? I've googled for a couple of days but didnt find the exact algorithm for this. and i got a link Indian Grid System. but i didnt get a ...
0
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1answer
23 views

ArcGIS Explorer coordinate system

I work with ArcGis Explorer and the coordinate system default is WGS 1984. Is it possible to change the coordinate system?
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1answer
283 views

GeoTools, convert CRS for Google Maps

I'm trying to use GeoTools to convert coordinates from EPSG:3857 to various CRS, in order to display WMS layers on a Google Map. For example, I want to display a layer in the EPSG:4326 CRS. I have ...
3
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2answers
496 views

Different definition of EPSG:3857 in GeoTools and QGIS

I want to do some checking if my point lies in any of the polygons defined in shapefile. So, I thought that I will determine CRS from shapefile (created in QGIS), and use it for transformation (where ...
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2answers
50 views

Leaflet, changing base map CRS

So i am using leaflet in order to create my project, which is a world map that certain layers would be add on top of it. I am wondering whether I should change the CRS property of the map object, ...
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2answers
41 views

preparing GPS coordinates for processing in gis

I'm currently working on a masters in archaeology, using QGIS to examine some palaeolithic sites. I created a database with the site coordinates, which I collected from looking at bibliographies of ...
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0answers
43 views

How do I get imported KML circles to appear as circles rather than ellipses in QGIS?

I have a QGIS project, CRS is WGS84 (EPSG 4326). I have OpenStreetMap as the base layer. I have loaded some point features. I have created a buffer zone around some of these features with WGS84 as ...
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2answers
50 views

Coordinate System Mismatch

I understand that coordinate system mismatches between layers is a relatively common problem. Nevertheless, exploring other posts hasn't helped me understand my issue. In short, I have a DEM raster ...
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2answers
278 views

Help, I have 10,000+ .shp files covering 3 UTM zones with unknown projections

I was handed a ton of property files with no projections attached but was told they are all in UTM zone 21S. Well once I merged them all together and projected them I realized that the data covers 3 ...
0
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1answer
25 views

Difference between MODIS sinusoidal and integerized sinusoidal grid

What are the differences between the MODIS sinusoidal and MODIS integerized sinusoidal grid? The sinusoidal grid seems to be currently used, whereas the integerized sinusoidal grid is marked obsolete (...
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2answers
53 views

projection from epsg:4326 to epsg:4258

I'm looking for projection functions to convert coordinates in 4326 to coordinates in 4258 and viceversa. Any suggestions?
2
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2answers
50 views

QGIS CRS Coordinate Reference System — Generated vs. Specified — error levels?

Below image appears to indicate that the vector layer data was identified as NAD_1983_HARN_StatePlane_Florida_North_FIPS_0903_Feet, which is a well known (to QGIS) CRS. However when the layer was ...
4
votes
1answer
403 views

How to convert Chinese Beijing 1954 coordinates to WGS84

I have a series of coordinates for locations in Sichuan Province China that I need to convert so that I can use them in Google Earth. The coordinates are "1954 Beijing coordinates system" and show up ...
3
votes
1answer
139 views

Converting between coordinate systems for LAS file using LASPY

I am trying to convert a .las file from WGS84 to UTM17. I have some drone imagery that was used to generate a 3d point cloud/ .las file, but it is in latitude/ longitude instead of easting/ northing. ...
0
votes
1answer
31 views

Converting raster data from netcdf to image

I'm rasterizing some wind data from oos.soest.hawaii.edu/erddap/griddap/NCEP_Global_Best to use as an overlay of a final image, but I'm having issues calculating the bounding box of the final image. ...
3
votes
1answer
34 views

Configuring Project CRS to reflect degree coordinates

seems like this is a common problem, but posts with similiar questions did not solve my problem. I have close to zero GIS background so apologies for my ignorance. My goal is to extract only a ...
0
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1answer
33 views

Projections leaflet and OSM

I downloaded data from OSM and extract lat/lng coordinates from a user who is clicking on a leaflet map. So my program returns the coordinates where a user clicked! I am wondering what crs I need to ...
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1answer
49 views

Description CRS EPSG:6372

does someone know where could I find a description of CRS EPSG:6372. I searched in the EPSG page but seem not to find something that quick..
2
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0answers
28 views

Coordinate Reference Systems error CRSAuthorityFactory

When I try to set CRS in geotools application first time it works great but after that I get FactoryNotFoundException it shows me this in console Exception in thread "AWT-EventQueue-0" java.lang....
2
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1answer
24 views

AttributeError: 'SpatialReference' object has no attribute 'ImportFromESPG'

I am trying to create a spatial reference using ImportFromESPG and this is what is returned: AttributeError: 'SpatialReference' object has not attribute 'ImportFromESPG' Code and error are copied ...
2
votes
1answer
316 views

In arcpy, if I subclass the arcpy Spatial Reference class, what is the object argument I would use in the subclass definition?

I want to do something like the following: class SubClassOfSpatialReference(arcpy_spatial_reference_object): def __init__(self, input_data): ... etc. Can I even do this? If so, what exactly ...
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0answers
24 views

France Coordinate Systems in Manifold?

Is anyone ever imported into Manifold files in the new French system? Manifold propose RGF93 but apparently I can not specify the area described (CC47).
4
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2answers
65 views

Understanding UTM coordinate syntax in Zambia?

I have some geo data from a collaborator with coordinates that look like this: Grid UTM X UTM Y 30C10 696033 8967310 25C05 690997 8962938 25C05 690688 8962268 sometimes lower case (...
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0answers
23 views

Arc Viewshed2 requires a vertical coordinate system

When I use the Viewshed2 tool with Arc 10.4, a 010451 error results when I try to add the input raster layer to the tool. The error states that the input raster is missing a vertical coordinate ...
0
votes
1answer
18 views

Republic of Ireland .csv to mark out points on site. Which map/co-ordinate system to use?

I need to be able to create points in Arcmap 10.1 (or 10.4) in a geo-referenced map layer which I can then export as a .csv file and then use in my gps (GeoExplorer 6000) to mark out those points on ...
3
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1answer
21 views

Defining a local CRS that is basically UTM31N rotated by 43.22 degrees

Working with some data in the North Sea and basically I'm a bit fed up of working at a slant of 43.22 degrees. I was thinking it must be possible to define an orthogonal local coordinate system as a ....
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0answers
52 views

Shapefile and CSV coordinates don't match [closed]

I'm new to QGIS and still trying to get to grips with some basic aspects. I'm trying to create a map by combining a shapefile outlining London boroughs, and a CSV file with a series of records ...
0
votes
1answer
45 views

ST_Transform error

I am getting an error from ST_Tranform while using ST_Intersection: No function matches the given name and argument types. You might need to add explicit type casts. select ST_Intersection(...
0
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1answer
32 views

How to Convert 3D coordinates to 2D coordinates for R-Tree?

I am trying to implement a bounding box via a spatial index and get an error stating that I must either provide coordinates as either (minx, miny, maxx, maxy) or (x,y) for 2D indexes. I've tried ...
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0answers
17 views

3ds Max file of a cityscape import into ArcGIS

I imported a 3ds Max file into ArcGIS Tools/3D Analyst toolbox/Conversion toolset/from File toolset Coordinate System(optional) I use the given projected spatial coordinates but the file is drawn in ...