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.

learn more… | top users | synonyms (3)

4
votes
0answers
63 views

EPSG code as dynamic text in ArcGIS

Is it possible to get ArcGIS to show the EPSG code for a coordinate system as dynamic text? The default text is quite verbose (see below), and I think just showing the "Coordinate System" is probably ...
1
vote
3answers
1k views

Formula/ calculation for ESRI map coordinate conversion (meter to decimal degrees)

I'm new to ESRI mapping. I have a set of points in ESRI, with x, y, z coordinates, which I believe is in meters. I am now writing an Android program, and I do not want to depend on ESRI, thus I would ...
1
vote
2answers
166 views

Extent and Projection on ASTER issue on my ArcGIS 10.1 ArcMap?

On my previous post on my ASTER issue, ASTER extent or projection issues. I decided to revisit on this issue. I am still puzzled as to why my ASTER has geographic coordinate system on its extent but ...
2
votes
1answer
206 views

Change coordinate system of a WMS service

I have a WMS service that is projected to UTM/SAD-69. My workspace is in WGS-84 with no projection. I want to change the coordinate system of my WMS service. Is it possible in ArcMap 10.0? The wms ...
5
votes
2answers
791 views

Stereographic projection of WGS84 ellipsoid on a plane[python]

I would like to ask you for help in following task. What I need to do is to derive local x,y coordinates from latitude, longitude, applying stereographic projection of WGS84 ellipsoid on a plane, ...
1
vote
1answer
72 views

How do I know the cause of my spatial error?

A (probably?) very basic question about spatial error it's about time I knew how to think about and answer correctly. I have some data plotted from XY coordinates. I look at them and it turns out ...
2
votes
2answers
334 views

Stereo 70 where is it?

I have ortho photos of Romania in Stereo 70 and GPS data in WGS84 of the same country : I want to associate the two series of data. At the moment, I can't find Stereo 70 in the list of CRS : does it ...
2
votes
1answer
48 views

Questions about EPSG:6372

I'm using QGIS 1.8.0 and as CRS EPSG:6372 a projection for Mexico, defined by the Instituto Nacional de Estadística y Geografía (INEGI). I have the following questions, I hope you can help me out. ...
2
votes
1answer
217 views

Waterman Projection in ArcMap

Anyone have any idea how to create (or where to find) the Waterman "Butterfly" projection in ArcMap?
2
votes
1answer
91 views

QGIS layers don't overlay after trying 'enable on the fly' and CRS settings

I know there are already many questions about this topic, but none of the answers helped me so far. I have two layers I want to overlay in QGIS. One of them is an Excell file with the coordinates of ...
3
votes
1answer
194 views

QGIS display does not reflect projection

I have slight experience with ArcGIS, but am new to QGIS. I'm trying to set the projection of my map, and I understand that this is done by altering the CRS (coordinate reference system) of each ...
2
votes
0answers
18 views

arcmap envelope coordinates from webbrowser tool

So I have my own php file with textfields which I run in my add in. Now I want to get the variables from the textfields and automatically give the value of the textfields to my env.PutCoords(x,y,x,y) ...
2
votes
1answer
111 views

Problem converting coordinates

I'm trying to convert punctual values from lat/long to EPSG:6372, a projection for Mexico, defined by the Instituto Nacional de Estadística y Geografía (INEGI). I found a converter online but somehow ...
2
votes
3answers
145 views

Can someone recognize the CRS?

I'm using QGIS 1.8.0 and have some shapefiles with a "User Defined CRS" which I don't recognize. Is anyone able to recognize it? Here is an image of the settings I see on QGIS. Thanks in advance. ...
2
votes
2answers
97 views

How to set my own CRS in QGIS

I want to transform WGS to MRT (GCS for Malaysia) using QGIS. Is "save as" to a new CRS the correct method? With ArcGIS, I can create transformation method to do transformation but I'm not sure in ...
2
votes
0answers
40 views

Layers with the same Geographic Coordinate system don't overlap [duplicate]

I am a GIS newbie. I'm having a problem that, from the looks of things on this website, is a fairly common problem. I have 3 layers, all in the same GCS that do not line up. I have read all the the ...
3
votes
1answer
136 views

How to change the settings for where ArcGIS splits world data

I have a world map made up of 6 shp files. All the files and the data frame are set to WGS84. The way Arc 10 and 10.1 decides to display the files, it splits Russia into 2. The majority of Russia ...
3
votes
1answer
845 views

How to convert to Australian Height Datum from Google Earth elevation?

I am trying to figure out how to convert from Google Earth elevation to Australian Height Datum (AHD). Google Earth's elevation / altitude is based on The vertical component (altitude) is measured ...
0
votes
0answers
235 views

Why do my maps exported in WGS84 have large coordinates?

I'm using QGIS to export map layers as GeoJSON for use in Leaflet. The map file CRS is WGS84(EPSG4326) and I'm exporting it as such. The issue is the exported coordinates are still too large: [ ...
1
vote
2answers
113 views

why is there a difference between using EPSG and using basic code

I have the OSgeo4w installed on my PC and I am trying to upload ITM(israel transverse mercator) landmarks to google earth. To do this I am using the cs2cs command.I noticed that i get a deviation ...
1
vote
1answer
73 views

What should this projection be in OpenLayers?

This is esri rest prj, "spatialReference": {"wkt": ...
3
votes
1answer
107 views

Rhombus shaped pixels when viewing an image referenced in WGS84

Following the Question What is the projection of WGS84 in GIS software?, in the comments section of the answer http://gis.stackexchange.com/a/73578/5256, Jake very well explains that Because the ...
0
votes
1answer
3k views

How Can I change the projection of shapefile in Qgis?

I have a probleme with Qgis. I would like to change the projection of my shapefile, it's about caves in my country. The default projection is set to EPSG:3003, I want to change it to wgs84 EPSG:32632. ...
1
vote
0answers
115 views

Converting custom grid to OS grid

I have two sets of data, one is in OS coords, no problem there, but the other was set out in about 50 off 10x10 metre grids aligned to a 'feature' on the ground. I do have the OS coordinates of their ...
4
votes
1answer
415 views

How to delete coordinate system from raster file with prj.adf?

How can I delete the coordinate system from a raster file like .adf which is multiple files? I found a file with tha name "prj.adf" so if I delete this file is it enough? In shapefiles usually Ι ...
4
votes
4answers
3k views

What is the projection of WGS84 in GIS software?

WGS84 is a reference ellipsoid that determines coordinates of every point on Earth using latitude, longitude and height about the its surface. This ellipsoid is often used as a base to make maps. ...
0
votes
0answers
196 views

Using ArcGIS COGO (Coordinate Geometry)

I have used COGO to create two polygons in a proposed outgrant file for some land parcels. The polygons are correctly shaped and in the correct area but they are spatially skewed and oversized. ...
3
votes
2answers
2k views

Meridian convergence. True north, magnetic north and grid north

I'm having difficulty wrapping my mind around meridian convergence, the horizontal angular distance between true north and grid north. Say I want to determine if a feature lies to the east or west ...
6
votes
3answers
576 views

How does ArcGIS determine which transformation to use when projecting on the fly?

How does ArcGIS determine which transformation to use when projecting on the fly? Where this would come in would be going from NAD 83 to WGS 84. Multiple transformations could be considered so how is ...
2
votes
1answer
1k views

Canvas Units to Degrees, Minutes, Seconds

I am using the WGS 84/UTM coordinate sysytem. When I go to > Project Properties / General / Canvas Units to Degrees, Minutes, Seconds my coordinates are wrong. I am using QGIS 2.0.1
1
vote
0answers
39 views

how to find angle between two points in QGIS? [duplicate]

I want to find angle between two points(LatLong) in QGIS. For example Point A = 80.2065,13.0876 Point B = 80.2064,13.0874 My CRS is WGS84 EPSG : 4326. I am trying to provide driving direction this ...
3
votes
2answers
89 views

How to fix Raster Dataset with numbers in Extent that look like latitude/longuitude but say metres?

In ArcGIS for Desktop 10.1, the Spatial Reference of my Raster Dataset reports that its units are metres (well meters) but the values look like decimal degrees e.g. -33 degrees is highly plausible but ...
1
vote
0answers
156 views

Azimuth, Inclination [closed]

I work on a software and I want to compute Dx Dy with Azimuth, Inclination. MD TVD Azimuth Inclination Relative X Increment Relative Y Increment X Coordinate Y Coordinate 0.000000 ...
1
vote
0answers
55 views

Gauss-Krueger coordinates in Openlayers

I want to show the coordinates of my map in gauss-krüger coordinates, but nothing works. I tried another projection, displayProjection, lonLat.transform but the answers are the same. my source ...
3
votes
1answer
90 views

Does anyone know how to make new CRS to reproject some old plans?

I need to reproject some old Cadastral plans, but I can't find any appropriate CRS on web. They are in old Hungarian System (Budapest tangent plane stereographic projection) which used in late XIX ...
2
votes
1answer
109 views

Why does same image in two ArcGIS ArcMap configurations show different extent numbers?

I would like to get hear from you about the situation I am seeing here. What It got my eye was that when I download an ASTER from Reverb/ Echo from USGS website. At work, I load my ASTER file to my ...
0
votes
2answers
145 views

How can I fix a geoTiff with an incorrect CRS?

Trying to load and plot a raster (it's a DEM) in R, but having problems. Using R I read in a raster file: library(raster) dem <- raster("DEM_Victoria.tif") # >70 MB print(dem) class ...
0
votes
1answer
332 views

GCS_WGS_1984 and 900913. What is the difference?

I use WMS Service with mymapproxy/mapproxy.yaml : services: demo: kml: tms: wmts: wms: srs: ['EPSG:4326', 'EPSG:900913'] md: title: MapProxy OSM WMS Proxy abstract: This ...
2
votes
1answer
404 views

proj.4 definition for Moscow GCS_Bessel_1841 to WGS84 convertion

I'm developing an app which should show a map using Leaflet framework but i have no luck as the coordinate system on the map server differs from the one used by Leaflet. As a map server i use ...
2
votes
1answer
39 views

IL East 1201 coordinate system

What is the difference between NAD CORS96 (Illinois East 1201) and the "normal NAD1983? We have data that was GPS'ed in CORS96, but data was imported into ArcMap using the "normal" NAD1983? What ...
0
votes
1answer
100 views

RFE raster images datum conflict

Im using ArcGIS 9.3. I've downloaded RFE images from FEWSNET. And im trying to load them on ArcMap, to clip them using Mozambique's shape. But as the RFE images related to Southern Africa come with ...
3
votes
2answers
1k views

which is the suitable Geographical Coordinate System and Projected Coordinate System for India

I want to create a spatial data for entire India, usually I use WGS84 as GCS and UTM zones for PCS in the places in India, but when I have to create the spatial data for entire India, I get confuse ...
3
votes
1answer
271 views

D3 to match this QGIS projection?

I have a map of Finland in QGIS, which says CRS = ETRS89 / ETRS-TM35 (Authority ID = EPSG:3047). I'm trying to show the map with D3, and can't quite match the borders/projection. The black one is ...
2
votes
1answer
216 views

Batch tool to identify coordinate system in dwg files

I am trying to ingest 1000's of DWG files into ArcGis. Some of them are clearly georeferenced (that is, if I view them in ArcMap I can see that there are in the right place relative to my other GIS ...
0
votes
1answer
76 views

New Zealand Projection System

I have a database with Easting and Northing points of New Zealand. The data structure is as follows Easting | Northing 2595425 | 6622565 2594585 | 6622595 2595000 | 6622085 2594500 | ...
1
vote
1answer
233 views

Save as Image geotiff from OpenLayers plugin [closed]

Now i'm working with the new version of Qgis 2.0 but I have a problem with the OpenLayers plugin. I take a geotiff screenshot of an area in EPSG:3857 and then I load the image.I'd check out the CRS of ...
2
votes
1answer
351 views

What is the range of numbers for coordinates in geographical coordinate systems

Up to now I thought the range of values in the geographic coordinate systems was: Latitude (S-N): -90 to +90 Longitude (W-E): -180 to +180 I have set the coordinate system of my ArcGIS data ...
1
vote
2answers
180 views

will ogr get coordinates in geographic coordinate system or projected coordinate system when using getPoint(int,OGRPoint*)

Consider the code that I have written in the stackoverflow question How to extract vertexes of geometries in ESRI shapefiles using ogr library with c++, I have used the code to show shapefiles on an ...
1
vote
1answer
329 views

What's the correct transformation for Lambert Conformal Conic for Mexico?

I have a shp archive without the .prj file. I don´t know the proyection of this shp, but I think it is in lambert conformal conic. Can anybody helpme to proyect this shp? i´ve tried to proyect it in ...
1
vote
0answers
111 views

Reference to Basemap instance's coordinate system

I use the matplotlib basemap toolkit (mpl_basemap.Basemap) to plot GeoTIFF images on a map background using pcolor() or pcolormesh(). For this purpose, I need to transform a meshgrid of x and y ...