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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2
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2answers
177 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
116 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
64 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 ...
2
votes
0answers
17 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
89 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 ...
0
votes
0answers
19 views

Coordinate conversion [duplicate]

I'm using QGIS 1.8.0 and I'm trying to convert points in lat/long to EPSG:6372. Does any one know a simple method? I'm not very familiar with the plugins of QGIS... Thanks in advance.
2
votes
3answers
129 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
59 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
34 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
81 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
346 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 ...
1
vote
2answers
79 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
67 views

What should this projection be in OpenLayers?

This is esri rest prj, "spatialReference": {"wkt": ...
3
votes
1answer
81 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
590 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
81 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
119 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
775 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
116 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. ...
6
votes
3answers
287 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
411 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
3
votes
2answers
63 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
115 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
38 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 ...
2
votes
1answer
88 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
1answer
182 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 ...
0
votes
0answers
40 views

Can I create a table showing all the Srid values for all the tables in my DB?

Hi I can identify the current SRID of one table (at a time) in my database, but I was wondering if there was a way to bring back a single table that would tell me all the datasets that do not ...
1
vote
1answer
215 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
21 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
67 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 ...
2
votes
2answers
424 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 ...
2
votes
1answer
118 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
54 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 | ...
2
votes
1answer
115 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: Northing : between -90 to +90 Easting : between -180 to +180 I have set the coordinate system of my dataframe in ...
1
vote
2answers
116 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 ...
0
votes
0answers
46 views

How to use projection of a shapefile in order to have a better view in OpenGL

As you see here, this is the code that I have used to extract vertices of ESRI shapefiles in order to show them with OpenGL. I have also uploaded my project here, if you want to give it a try and see ...
1
vote
1answer
131 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
56 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 ...
0
votes
0answers
226 views

Help me convert this US Lambert Conformal Conic Google Maps Projection to Australia

Following on from this question: Identify what projection this Australian map uses? <- this is the sort of map i want to load in I need help changing the bits necessary in this example of Lambert ...
-1
votes
1answer
188 views

Projection parameters from WGS84 UTM37 to Ain El Abd UTM37 and the reverse

I am developing application using JavaScript apis, I want the correct projection parameters to convert from WGS84 UTM37 to Ain El Abd UTM37 and the reverse. When I click in the map I get Ain El Abd ...
1
vote
0answers
389 views

How do I change from lat/long to a metric coordinate system in GRASS?

Yes, it's yet another transformation question. I am working with ASTER DEM data, which is LatLong WGS84. I want to process the DEM map into an STL file for use in a CFD simulation. The script I am ...
3
votes
1answer
238 views

Are these two OGC WKT projections the same? And if so, why are their reference strings different?

So here is the .prj text of a federal shapefile dataset of all public airports in its native OGC WKT format: ...
1
vote
3answers
279 views

Why do area calculations return negative values?

I have created a shapefile with some polygons and am now trying to calculate the area of these polygons. The original CRS was WGS84, I have reprojected it to WGS 84 / World Mercator so unit is metres. ...
4
votes
2answers
185 views

Identify what projection this Australian map uses?

Im looking to put this map into google maps as custom tiles, but i now learn what projection is and that this map does not use the same format as google's default. You can create custom projections i ...
2
votes
0answers
90 views

Height of the geoid in ECEF coordinates

I know that the relationship of geoid height N and ellipsoid height h to orthometric height H is defined by H = h - N, but what if I have some position in Earth-Centered-Earth-Fixed (ECEF) ...
3
votes
1answer
163 views

How to get spatial reference of a shapefile using python?

I always use arcpy.GetParameterAsText to get the spatial reference from the user. There should be a way to decide what is the spatial reference of a shapefile but I can't find it. Something like ...
1
vote
2answers
470 views

Problems with scale bar units in qgis composer

I apologize in advance for again bringing the topic up, I've searched for answers in other posts but couldn't find anything helpful. I fight a personal little war with the scale bar of the QGIS ...
0
votes
1answer
27 views

Can't get CRS transformations to work with scalie

No matter what I do I can,t seem to be able to transform several shape files (all vector) to a CRS that works. What is recommended for British Columbia for forestry purposes is NAD83 BC Albers. ...
2
votes
2answers
312 views

finding the correct transformation (from EPSG:31300 to EPSG:4326) or how to store two srid in one table

I have a very specific problem. I have data crossing two coordinate-systems, more specifically: the Netherlands and Belgium. Previously the data was stored in one table in Oracle, using the RD ...
0
votes
0answers
41 views

OGR: How to control the spatial reference of a layer?

I want to use a subset of a shape for a spatial filter. The filter returns 0 features which is unexpected. So I was checking the spatial references of the layers and one of them seems to have none. ...