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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3
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1answer
796 views

Setting coordinate system in PostGIS

The geographical information data that INEGI (part of the Mexico's goverment) provides are in the following coordinate system (or is projection?) Lambert Conformal Conic, double standard parallel ...
1
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2answers
386 views

Openlayers Plugin, Project CRS and Grids in Composer

Apologies in advance for the potential for this to be a duplicate question, I've had a good look, and I can't see a solution thatI understand well enough to help me. I have my project CRS set to a ...
-2
votes
1answer
164 views

Changing from one coordinate system to another without re doing

I'm new to this. Can I change from the Nigeria Mid Belt system to the Nigeria West Belt system easily, or do I need to recreate my project? Thank you!
2
votes
1answer
456 views

How to align (georeference) images using QGIS?

I'm completely new to all this. I'm trying to make a map of Han dynasty-era China for a mod for a game called Crusader Kings 2. I've downloaded QGIS and Natural Earth 2, but I need this image to ...
-1
votes
1answer
112 views

How to find the most east or west longitude around the date line

I've got a python script that is comparing extents of rasters in various projections. Generally it works, but sometimes, especially when the rasters are global in extent or cross the dateline it ...
0
votes
0answers
161 views

Why does Append on large annotation layer give WARNING 000594: Input feature falls outside of output geometry domains?

I am trying to Append about 3,000,000 records in an annotation layer to another, empty annotation layer. I'm using ArcCatalog and I get the following error messages: WARNING 000594: Input feature ...
0
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1answer
79 views

Is georeference the same as geotransform?

Does georeference mean the same as geotransform? If not then what is the difference?
1
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2answers
332 views

How to best set up QGIS for GDA 94 zone 55 (Australia)

I am looking for help on the best way to set up QGIS for GDA 94 zone 55. (i.e. all the relevant settings etc.)[1.8 in lieu of 2.0] Am working off Garmin GPS/gpx data in GDA/UTM format (I accss this ...
2
votes
0answers
349 views

Problem with Create Fishnet on a Landsat footprint

I have a Landsat footprint polygon shapefile that I simply want to create a 6 x 6 fishnet on. I thought this would be simple, but every time I run the tool I get a fishnet output that extends longer ...
0
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0answers
87 views

Filtering features in Bounding Box made from lat long?

I have a feature data which is based on lat/long. To show on the map, I convert them to east/nort. When dealing with Bounding box, I am getting co-ords is east/north, so I am converting from ...
2
votes
2answers
336 views

Older British Geological Survey geology maps of Kenya; need complete projection information

I have several geologic maps of Kenya produced by the BGS circa 1993. Noted on each map is the following: Projection:-Transverse Mercator Spheriod:-Clarke 1880 (modified) That's great, but that ...
1
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0answers
90 views

Spot NDVI spatial reference system

I have a series of spot NDVI data for Australia and I need to extract some information from it. Unfortunately there is no spatial reference system attached to it. This is one example of the data (HDF ...
2
votes
1answer
143 views

Caching aerials in a different coordinate system

I have a strange problem to deal with caching of the aerials. All of our Aerials are stored in SDE in State Plane WKID-2237 (NAD_1983_StatePlane_Florida_West_FIPS_0902_Feet). But we are planning to ...
0
votes
1answer
413 views

Determining the Coordinate System of shapefiles

I have 8 shapefiles which have a common coordinate system but none of them have it defined i.e. "unknown" is written when I look in the properties dialog box. However, I can see the extent which I am ...
1
vote
0answers
165 views

How to define coordinate system and geographic transformation for a CAD drawing?

I am a GIS guy and I occasionally work with CAD files as well. Now I need to know how I can define a coordinate system and a geographic transformation for a CAD Drawing. According to ESRI: "You can ...
1
vote
2answers
159 views

How do I gather X and Y co-ordinate data from a vector grid overlay in QGIS 1.8.0?

I have overlaid a 10m x 10m grid onto a UK Ordnance Survey raster map. I have set both raster and vector maps to the same CRS, (OSGB 1936 British National Grid; ESPG:27700). I have a csv file ...
1
vote
3answers
2k views

How to project Google Earth KML files in ArcGIS so that they display properly?

I am sure my question has been answered in the past but I would really appreciate it if someone could help me with this... I have downloaded a KML point file from Google earth and I imported it into ...
0
votes
1answer
158 views

converting grid references to long/lat

If I import from a POST DB a set of points that are referenced by grid reference, will the long/lat decimal also be added to the file? or will I have to convert the points to long/lat myself? In ...
2
votes
3answers
452 views

Is GeoServer getting coordinate output in GeoJSON WFS wrong?

When I do a WFS request to GeoServer and specify the SRS like this: http://myserver.com/geoserver/wfs? service=wfs& version=2.0.0& request=GetFeature& ...
1
vote
1answer
185 views

Intersect line (LLH) with any LLH plane

I have a LLH (Longitude, Latitude, Height) point with an elevation angle and azimuth (actually it is a receiver point). I believe I can make a line with this information. What I want is to intersect ...
2
votes
2answers
572 views

Python script to read coordinate system of an input feature class? [duplicate]

How to read the coordinate system of an input feature class in python script. How we can use "Describe()" function and tool validator for that purpose
2
votes
1answer
444 views

extracting data from rasters using shapefile boundaries in r

I have a raster.stack of 8 environmental variables and a shapefile of Ecoregions for the southern U.S. files<-list.files(path='E:/Ecoregions Models/Border Bioclim/',pattern='asc', ...
0
votes
1answer
78 views

GCS_WGS_1984 Map in Esri Javascript

I created a dynamic map service in Arcmap and published to my server. The spatial reference used: GCS_WGS_1984. I used the javascript without basemap to display in a html. I cannot do a ...
1
vote
1answer
311 views

Getting SRID from prj file? [duplicate]

I've seen varying questions relating to this question. Except mine revolves around C#. I'm trying to validate that the projection I'm expecting matches what is in all the .shp files I'm reading. ...
6
votes
2answers
357 views

Google Maps for other planets

I have visited, but do not remember where, Google maps for the Moon and Mars (I think). I am wondering if anyone knows what you have to do to generate the necessary GIS data (coordinate system, etc) ...
3
votes
0answers
96 views

Unknown gridlines on old Greenland base map!

Can anyone help me out please? I'm using an old 1:10,000 base map of Greenland for a mapping project with nice 10cm gridlines already drawn on. However it uses a coordinate system which is unfamiliar ...
2
votes
1answer
93 views

Coordinate System correctly renders both decimal Long/Lat and some number in the billions

I am new to ArcObjects and I have been creating an application which will (among other things) be reading data in from a sister program and plotting it on the map.I have found out that I can enter the ...
7
votes
2answers
533 views

How to Georeference Photos With No Spatial Reference?

I have about 100-200 field ground shot photos I would like to overlay in ArcGIS 10 that have no spatial information which I need to somehow develop using a photogrammetric formula. The camera was ...
2
votes
1answer
270 views

Transformation from WGS1984 to ITRF2008

We are using Projected Coordinate System: Ain_el_Abd_UTM_Zone_39N (Transverse_Mercator) in our GPS Devices and have valuable Coordinate data. Can I change the projection of this data this to WGS 1984 ...
2
votes
1answer
326 views

c# How can I get the spatial reference of a ArcGIS layer?

I m using the following c# code to add my layer dynamically on a arcgis silverlight application: ArcGISDynamicMapServiceLayer mylayer = new ArcGISDynamicMapServiceLayer() { ID = layerName, Url ...
0
votes
2answers
484 views

Why the layer can be loaded to Google Map not OpenStreet Map using MapServer?

Updates: Problem Solved !!!!!!!!!!!!!!!!!!!!! Replace "wms_srs" "EPSG:3857" to "wms_srs" "EPSG:900913" in Mapfile !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! I am using ...
2
votes
1answer
148 views

Does the Load Data function in ArcCatalog automatically re-project the data?

If I have a feature class within a dataset in one coordinate system and using the Load Data function, load that data into a feature class of a different dataset that's in a different coordinate system ...
8
votes
2answers
441 views

Problem with plotting map in R

While plotting the gadm map of Russia in R, I have a problem at the 180 degree meridian, where part of the Russian region is plotted separately. You can see it on the plot using the following code ...
6
votes
3answers
372 views

Using PROJ.4 library to transform from local coordinate system coordinates to global coordinate system using ground control points?

I have a point cloud whose coordinates are with respect to a local coordinate system. I also have ground control points with GPS values. Can I convert these local coordinates to a global coordinate ...
2
votes
1answer
287 views

Confused about reprojecting Google Maps (latlong) to Irish Grid TM65

Trying to transform points taken from Google maps (as latitude and longitude) to Irish Grid TM65 using the spTransform in R, and I'm confused on something. Everything I find on the net tells me ...
0
votes
2answers
197 views

CORINE land cover 2000: coordinate reference system

The PDF in this link states that the CORINE land cover 2000 used ETSR89 as its coordinate reference system: http://www.eea.europa.eu/publications/technical_report_2006_7 I wanted to check I am ...
13
votes
1answer
489 views

Creating nanoscale DEM with GDAL

A bit of a strange question perhaps, but let me give you a breif explanation of the background before my actual questions: Atomic force microscopy (AFM) is a method that, in short (and to my limited ...
0
votes
1answer
352 views

Which CRS fits “Lambert Conformal Conic Projection, Standard Parallels 46.40 and 49.20”?

I am trying to georeference a VFR chart in qgis and I can't figure out which CRS to use. Map projection - Lambert Conformal Conic Projection, Standard Parallels 46.40 and 49.20. Any ideas which ...
1
vote
3answers
174 views

Copy>Paste from meter to feet coord-sys, and coordinates don't change in ArcMap 10

My dataframe coordinate system is in UTM with linear unit Meter. If I have a Polygon shapefile in a UTM coordinate system with a linear unit of Foot_US and I am sent a shapefile in the same UTM ...
3
votes
1answer
861 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 ...
2
votes
2answers
324 views

Stripping spatial reference

I am creating an exercise for remote sensing students and would like to take an existing raster and remove the spatial reference from the file so that the students can practice using another image to ...
1
vote
1answer
369 views

Python GDAL/OGR: WGS84 & meters units

I'm dealing with shapefiles projected in: GEOGCS["GCS_WGS_1984", DATUM["WGS_1984", SPHEROID["WGS_84",6378137,298.257223563]], PRIMEM["Greenwich",0], ...
1
vote
2answers
532 views

How do you convert to degrees and minutes from 8/9-digit lat/lon DMS code? [duplicate]

I'm trying to map the national bridge inventory, but the coordinates are stored in this 9-digit code for longitude (and 8-digits for latitude) EXAMPLE: Longitude is 81°5.8' Code is 081054800 Page 9 ...
8
votes
3answers
932 views

Distance measurements across UTM zones: use geographic or planar approaches?

I have a survey grid spread across 3 UTM zones (36N, 36S, 37S). I want to find the nearest (or shortest) distances of the centroids of these grids to roads and various points between. It seems like ...
3
votes
1answer
327 views

Mapping latlng values to a point on a HRAP grid

I have a copy of some NWS rainfall data loaded into a PostGIS database. Given a lat lng point, I want to find the rainfall for that given day. The original data are in XMRG format and projected ...
2
votes
1answer
164 views

Why are towgs84 definitions missing on Ubuntu 12.04 compared to Windows?

Why for some of my most used CRS the 'towgs84' part of the definition of the layer spatial reference system is missing, compared to the QGIS for Windows? EPSG 3004, 23032, 23033 when used with QGIS ...
1
vote
1answer
50 views

Editor and projections ArcGIS

When opening an edit session Arc is telling me that some of my shape files' coordinate systems do not match the data frame. Here is the data frame coordinate system: Stereo_70 Projection: ...
0
votes
0answers
19 views

How to convert Rotated Polar grid raster to Non Rotated Polar Raster? [duplicate]

I have a RCM data which is in rotated Polar system , I want it to convert into non-rotated polar RCM. How can i do this things ? Please give some guidance
1
vote
1answer
116 views

Geometry has incorrect latitude-longitudes

SELECT ST_SRID(geom) AS s FROM zones GROUP BY s; returns a single record: 4326 SELECT Find_SRID('public', 'zones', 'geom'); returns 4326 SELECT AsText(geom) FROM zones returns geometry like: ...
0
votes
1answer
323 views

Geoprocessing tool not executing when Map's SpatialReference is Web Mercartor

I am facing a strange issue when trying to execute GP service when my map's spatial-reference is Web Mercator. I appreciate all help. I have a JavaScript API application. Initially I only had my map ...