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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14 views

Canadian Geodetic Vertical Datum of 2013 (CGVD2013)

"Natural Resources Canada (NRCan) has released the Canadian Geodetic Vertical Datum of 2013 (CGVD2013), which is now the new reference standard for heights across Canada. This new height reference ...
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11 views

Google Maps custom projection

I have a WMS layer with 3301 projection. I want to show it on Google Maps. From the official documentation I understood, that by default Google uses another projection. So, my question is: can I use ...
3
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1answer
31 views

methods for converting coordinate datum and format in python?

Related to an earlier Q&A of Missing grid shift files for cs2cs.exe? ... what are the various methods to convert coordinate datum and format in python? (Windows Vista, python 3.4) For example, ...
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5 views

Unable to execute the algorithm using SAGA LS factor

I tryed to calculate the LS Factor at SAGA, using a slope raster and the area raster, both at the same EPSG, and the error:Unable to execute the algorithm the error means something with the coordinate ...
1
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1answer
40 views

Why the Select By Location analysis calculates distance in a wrong way?

I want to select cities, which are within a distance of 200 km from my pre-selected city. However my result depends on whether I'm creating a buffer and use it to clip the cities (good result) or use ...
2
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1answer
77 views

Coordinate system doesn't contain values in the range -180 to 180 and -90 to 90

I'm creating an android version of a PC program (I've contacted the company who owns the PC program, so it's legal). The program is in the core a GPS, but is used to navigate pre-defined routes for ...
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0answers
28 views

Missing grid shift files for cs2cs.exe?

I'm trying to convert a coordinate to WGS84 degrees to NAD27 UTM on windows (vista 32 home basic), from python. I tried installing pyproj with no luck even after researching for a while; so decided ...
2
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2answers
34 views

Georeferencing a map image with no precise projection info

I am trying to georeference a map that has meridians and parallels etc. but no projected grid displayed. I can get the coordinates of the meridians/parallels fine, so georeferencing should not be an ...
2
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0answers
15 views

Error in Measuring distance using QGIS?

I am using the current Qgis 2.6.1 and having problems using the measuring distance function. The 'Measure Line' is giving me distances which is completely wrong and the scale shown was too big also. ...
2
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2answers
62 views

Can we no longer reference an ArcMap layer to get the spatial reference?

I'm currently using ArcGIS 10.2.1. In previous custom geoprocessing tools, I've used the following code to create a feature class in-memory, and set the spatial reference using an existing layer in ...
1
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0answers
24 views

Max length for WKT name

First of all, sorry if this is obvious or stupid questions. I am not very familiar with geographic information system. My question is, is there max length limitation on WKT name? see the bold text ...
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2answers
70 views

cannot get ArcGIS to project a shapefile

I am using ArcGIS 10.1 (SP1). I got a shapefile with polygons representing some features of the landscape in my study area. This file has been provided by a third party institution. The coordinate ...
0
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1answer
31 views

Export KML from GeoJSON in QGIS and coordinates change?

I'm very new in this area. I have a geojson vector layer file, with coordinates like { "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 487677.2993499999866, 112018.26101 ] } }, ...
2
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1answer
46 views

UTM Coordinate Mapping Across Zones

I am building an application that requires me to plot UTM coordinates on a chart using CSV data. I am given two UTM coordinates for each record, although I would like the application to handle zone ...
0
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1answer
16 views

Expand zone 33X

I have coordinates in DDD MM.MMM Lat N80 45.00 Long E028 55.00 I want to convert these to UTM. Using a web converter i get 35X E534389 N8965867 So far so good. But I have seen these coordinates ...
0
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1answer
26 views

Converting DEM in degree decimal to meter using ArcMap?

i am trying to make cell size of satellite image and DEM equal for Maxent. cell size of satellite image is in metric but DEM is in degree decimal. how can i convert DEM in degree decimal to meter ...
0
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1answer
38 views

Transform lat,lng into x,y

I have coordinate system with x and y. Also I need to show there x,y point but I have coordinates latitude, longitude. How I can trasform latitude, logitude into x,y to show on x,y scale?
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2answers
33 views

Wrong projection reference in coordinate system - How can I modify the original coordinate system?

Working in Germany, where Gauss_Kruger is very often used (as well as ETRS1989_zone 32N), and trying to find out about WKID when I realised that on my machine, the projection reference of the ...
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2answers
32 views

WFS: How to specify input coordinate reference system

Geeoserver allows to specify output CRS by parameter srsName in WFS GetFeature. Is there a way to specify the input CRS? I am displaying layers of different CRSs in my map - all reprojected to ...
1
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1answer
61 views

Map Spatial Reference

I was having some trouble when trying to zoom to certain point in ESRI base map. So basically I got an ESRI base map and added a map overlay on top of it: function setMap() { function init() { ...
0
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0answers
27 views

Problem with Openlayers plugin adn Googlemaps [duplicate]

I have just installed QGIS 2.6.1 and I try to create a new project using googlemaps from Openlayers plugin but I am not able to zoom and move on the map. I have do not set anything so I was surprised ...
1
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1answer
35 views

What do I define the coordinate system of this data set to?

I have an excel spreadsheet with lat and lon columns, and 5 additional columns with associated data. I want to open the data points in ArcMap 10.2. I was told that the data was: based on a Lambert ...
3
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1answer
45 views

QGIS “ERROR 6: No translation for Lambert_Conformal_Conic to PROJ.4 format is known.”

I am trying to clip a county DEM file using the PLSS Section shape files as mask layers... that is, I want it clipped to sections so that I can load my DEM into QGIS one section at a time, without ...
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0answers
22 views

Leaflet CRS.Simple or CRS.EPSG3857 conversion Problem

I'm using v-leaflet (0.61) , a vaadin plugin, to visualize some layers over a map. Clicking on the map, I create a wms query to geoserver. The query needs some parameters and one of them is the bbox. ...
2
votes
1answer
41 views

Unknown Coordinates

I'm new at gis. I'm using Arcgis 10.2.2 and trying to geocode some addresses. I used a geocoding service which gave the coordinates in this format: POINT(102778.307715144 105888.168842117) I don't ...
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2answers
55 views

conversion differences going from 4326 to 26710?

there are two coordinate systems in question: "CRS 1" = EPSG:4326 (good ol WGS84) "CRS 2" = EPSG:26710 (UTM NAD27 Zone 10 (specifically, zone 10S but they don't seem to differentiate) For the ...
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1answer
48 views

mosaic dem with multiple coordinate systems

I'm sure this is a basic question, but I'm struggling to mosaic multiple DEMs (~40) into one large raster. The DEMs are 30m NED rasters from the NRCS data gateway, for the New England region. They are ...
1
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0answers
29 views

How to shift a CRS by an observed offset

I have a drone image is which is geo-referenced over a Google Sat. image. These align well, and both use WGS84-Pseudo Mercator (EPSG:3857). I have a set of data points in a shape file which are ...
3
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2answers
49 views

Generic term for CRS axes?

We're making a light web front to a database, and I saw this in a test screenshot: Despite those coordinates being nowhere near North America, the "latitude/longitude" label for those coordinates ...
0
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2answers
28 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 ...
0
votes
1answer
87 views

How to inverse Y axis

I have a SQLlite database containing cached tiles with X,Y,Z fields and I want to use it in MapCache. My Y field is appearing upside down in Google tile index but I want to inverse it like this: ...
1
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1answer
23 views

Aligning data in GCS_North_American_1983 and GCS_North_American_1927 using ArcGIS for Desktop?

I have tried everything that I have found on this site so far and nothing has worked! I have used ArcGIS for 3 years but had never had to mess with coordinate systems as the 1st company I worked for ...
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0answers
27 views

Projection problems when importing .kml from Google Earth to QGIS

I want to open several points that I exported from Google Earth as a .kml in QGIS for further use. I can import the data and the points are displayed but something must be wrong with the projection as ...
0
votes
1answer
37 views

Proper transformation file to go from NAD83 CSRS UTM 17 to NAD83 UTM 17

Looking to determine which transformation file to select when using the Project tool in ArcMap 10.2.2 to go from NAD83 CSRS UTM 17 and NAD 83 UTM 17. The data I am working with is from Geogratis and ...
1
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1answer
45 views

ITRF2008 to WGS84 Datum Transformation in ArcMap?

If I have data in IRTF2008 as shapefile is it possible to change this to WGS84 and how? The need for this comes when trying to display the data in a third party program that doesn't recognize the ...
0
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0answers
12 views

Deviated InfoBox - Geojson

I tried to showing info-Box after click (onmouseclick), that is goes well but info-Box's location is far away from my geojson area. Can Someone explain to me what happen in here?
0
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0answers
34 views

Custom CRS in Qgis web - client

Hello I'm abit new here and I hope I'll even set the question right. Recently I've started to work on a project that will include displaying maps in qgis-web-client. At the moment I've set up the ...
2
votes
2answers
36 views

Coordinate Not Match - Convert Shapefile to Geojson

I'm a newbie at GIS programming and I have a problem with file conversion. I've tried to convert shp file to geojson, and the coordinates do not match. But when I try to convert it to kml, it goes ...
8
votes
3answers
182 views

What coordinate system is this netCDF raster?

I obtained a netCDF raster file, but I couldn't get any metadata to get the name of the coordinate system the raster has been built on. The raster itself doesn't have any coordinate system embedded. I ...
0
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1answer
34 views

How to set the spatial reference to a OGR layer using the Python API?

I create new a Ogr Layer with the Datasource.GetLayer() method: driver = ogr.Open(input_file).GetDriver() datasource = driver.Open(input_file, 0) input_layer = datasource.GetLayer() If the input ...
0
votes
1answer
31 views

Overlaying two shapefiles and projecting one of them from Geographic to Projected Coordinate System? [duplicate]

I am trying to project a shapefile which is in Geographic Coordinate System i.e. Geocentric Datum of Australia 1994 to a Projected coordinate system i.e. Map Grid of Australia Zone 55 using GDA 94 ...
0
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2answers
46 views

I am looking for a direct long. to X lat to Y map of earth

Occasionally I like to drop raw coordinate data into excel and do a scatterplot. It comes out quite a bit like cylindrical projection but not quite. The distortion near the poles is a bit more ...
3
votes
2answers
70 views

Import Google Maps locations to ArcMap

I have a problem with importing a list of coordinates to ArcMap. I have a shape file of regions of Chile and I would like to add a list of locations with coordinates I got from Google Maps. The shape ...
1
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0answers
32 views

SRS in GeoServer and OpenLayers

I have a shape file with projection WGS84,when I added it to GeoServer,the Native SRS is Unknown and for Declared SRS I wrote EPSG:4326. However, the shape file became a mass if opened in Layer ...
0
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2answers
37 views

US Geological Survey Standard Projection?

Is there a standard or default projection on maps created by the US Geological Survey (USGS)?
4
votes
1answer
26 views

What is the level of error I should expect when using a NAD StatePlane CRS from an adjacent state?

I am adding Georgia data to my GIS database and, unlike the California data I've added, have decided to use my existing EPSG:3361 (South Carolina StatePlane) coordinate reference system for ...
3
votes
1answer
44 views

Create Archimedean spiral with geographic coordinates

I don't know if this is the right place to ask but here it his. I want to create an Archimedean spiral based in some location. Lets say I have this set of geographic coordinates (48.860770, ...
3
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0answers
35 views

Is there a way to expose Spherical Mercator Lat Lon in Google Map API?

The map tiles in the Google Maps are in Spherical Mercator projection (srid 900913), but in the API the methods report coordinates in Lat/Lon WGS84, e.g. map.getCenter(). Is there a way to return the ...
3
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0answers
41 views

Statistically comparing two sets of coordinates [closed]

I have been given a task to compare two sets of points, one set being a set of predetermined points, on the other being a set of actual points that were taken in the field. I have to compare these ...
2
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0answers
29 views

Problem when converting to LCC projection

I am very much so a beginner.. but here goes. I have two maps that should line up with each other, but their projections are different. I've tried to use the gdalwarp utility to match them up, but ...