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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Missing importfromURN in gdal java wrapper

The java wrapper of gdal doesn't have the method importFromURN, and I want to use the projection system which is specified in the URN string format. Is there a way in which I can do that? Maybe I can ...
8
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1answer
908 views

Getting units from ISpatialReference of ArcObjects?

How do I get the units (meter/feet) from an ISpatialReference object in ArcObjects?
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2answers
18 views

Display a WFS service with OpenLayers 3. Define an add custom projection

I am new in OpenLayers 3. I am working with GeoServer 2.6.2 and I would like to create a web mapping with OpenLayers 3. I am working with a custom projection from El Salvador (Central America). It is ...
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10 views

How to project WGS84 to Kertau RSO in ArcGIS Android

How do I make a conversion from WGS84 (longitude, latitude) to Kertau RSO using ArcGIS Android? I looking into this for my project. Am I looking at the correct direction? I have following points in ...
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17 views

ArcGIS Online no spatial reference

My intention is to georeference an image so as to create a Swipe Map in AGOL. First, I add my control points, rectify, then analyze before attempting to share and finally publish in AGOL. The other ...
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1answer
428 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 ...
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0answers
25 views

Are there any conditions that could break the creation of an arcpy.Polygon object?

I have a script that generates a mesh network from vertex and centroid inputs, and it works for almost all my points. But for some records that get created in the feature class via the script, their ...
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3answers
314 views

Coordinate System Google Maps API

I am making an application in java using GMaps4JSF where the person will enter the address on the map I'll take this coordinate and consult on my postgis base regions in which region this point is ...
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2answers
41 views

How to overlay a Lat/Long CSV and NAD83 Shapefile in QGIS?

For reference I am new (as in a few hours of messing around) to GIS. I have a shape file/accompany projection files ect: CURRENT.prj CURRENT.shx CURRENT.shp CURRENT.dbf CURRENT.sbx CURRENT.sbn I ...
2
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1answer
67 views

Convert coordinates to differnt Spatial Reference System in Python

I am trying to convert co-ordinates (-33.75, 150) from epsg:3857 to epsg:28356 in Python. Using both of the examples in post How to convert projected coordinates to lat/lon using Python?, I get the ...
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3answers
4k views

How to convert projected coordinates to lat/lon using Python?

I assume this is a basic question but I can't seem to find or recognize the solution. This site returns Point: X: -11705274.6374 Y: 4826473.6922 when you searching with the first key value of 000090 ...
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3answers
772 views

PRJ file for Stereo70 S-42 projection?

I receive lots of Romanian maps with the projection STEREO70 with Datum "S-42 for ROMANIA". I have only found the "Stereo 1970.prj" by ESRI, and when I open the maps with my GIS software the ...
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1answer
19 views

How to manually add spatial reference information for FEWS rainfall data in ArcMap?

I am trying to match rainfall data from USGS/FEWS to coordinate locations of survey households in Uganda, so I will need to be able to project the rainfall data. So far, I downloaded the dekadal RFE ...
11
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1answer
838 views

How to define Winkel Tripel in proj 4.8.0?

I have QGIS with proj 4.8.0 installed. I'd like to add Winkel Tripel projection which seems to be defined as +proj=wintri But that definition string does not work. Is this a bug in my proj version, ...
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1answer
38 views

Why did my data points shift position?

Here is an example of my issue: There are two point layers displayed in this image: The yellow dots are my currently used layer with the most updated data. The green dots are legacy data from when ...
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1answer
38 views

Shapefile doesn't fit in CartoDB basemap

When I import some shapefiles in CartoDB they don't fit properly at street level, as you can see in the screenshot. In this case, the shp was generated in QGis with CRS EPSG:29193 - SAD69. I have ...
2
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1answer
196 views

Define spatial reference of layer in ArcGis JavaScript API

I get an error "Map: Geometry (wkid: 3301) cannot be converted to spatial reference of the map (wkid: 4326)" when I want to add only graphics layer. I found that spatial reference for a map is defined ...
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1answer
310 views

Polygon using ARCGIS API for javascript

I've polygon data as POLYGON ((1645481.0939999996 6124506.9885, 1645470.0473999996 6124473.5406, 1645475.7094 6124440.1391,1645481.0939999996 6124506.9885)) in wkid=2193 I want to project ...
3
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2answers
113 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, ...
6
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2answers
131 views

QGIS area calculation differs when on the fly CRS transformation enabled

When I open QGIS, add the layer, and calculate the areas of the shapefile via field calculator I get a different area than when I open QGIS and check "Enable on the fly CRS transformation" and ...
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1answer
61 views

Want positive Y to be downward (not upward) in OpenLayers3

I want to use OpenLayers3 simply to draw some shapes that I can inspect by panning and zooming. There would be no map backdrop since the data is not geographic in nature. The data holds the ...
3
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2answers
275 views

geocoding addresses specifically into NAD1983 or converting X,Y into 1983 after geocoding

I'm going bananas trying to geocode addresses into a NAD1983. I have ArcMap 10.1 and I'm using the default address locator (North American 10.0 from arcgis online). No matter how low I set the ...
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1answer
626 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") ...
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1answer
163 views

Coordinate mix up

I am working on a basic map, pulling coordinates from google earth, converting them to decimal degrees in excel, and then importing them into qgis. I am using qgis 1.8. When converting from degrees, ...
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118 views

LiDAR dataset displaying 500 meters to the east of correct position

Why does my LIDAR dataset show up ~500 meters to the east of the correct position even though a spatial reference/coordinate system is provided? Some background: The LIDAR data were downloaded from ...
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2answers
228 views

Add custom CRS - 2.2.0 Valmiera

i've builded a custom proj.4 library, tested it by command line (proj and cs2cs) and with postgres/postgis. All works fine. Now i'm trying to make the same with Qgis 2.2.0. I've replaced the original ...
2
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1answer
396 views

Leaflet setView with non lat/long CRS

Is it possible to use setView when using an alternative CRS? var map = L.map('map',{crs: L.CRS.EPSG26915}).setView([4970081,477018], 13); // Returns: Uncaught TypeError: Cannot call method ...
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0answers
33 views

Identify coordinate system used near Kuala Lampur

I have some coordinates that were given to me, and I do not know much about how they were taken. I thought they were UTM coordinates, but when I try to convert them using some online tools I always ...
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0answers
28 views

Conversion of (lat, lon, height) from GPS to another CRS

I have latitudes, longitudes and ellipsoidal heights derived from GPS readings, referenced to the ITRF08 system with vertical datum (CGVD2013) - http://webapp.geod.nrcan.gc.ca/geod/hmod/hmod.php How ...
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1answer
49 views

How to upload GeoJSON to CartoDB in a CRS that is not lat/lon?

I'm pretty sure I need to convert the coordinates in my GeoJson file to EPSG:3857 for them to play nicely with CartoDB, but I don't know what coordinate system they are currently in. The original data ...
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1answer
8 views

Geosoft Oasis Montaj Local Datum Transform - What is the purpose of this parameter?

When defining a coordinate system in Oasis Montaj one of the parameters is "Local Datum Transform". Is this the coordinate transformation definition to convert the defined coordinate system of a data ...
2
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1answer
489 views

PostGIS: ST_Transform function conversion problem

I'm inserting map data from a GML file with srid EPSG:27700 into a PostGIS database table with srid EPSG:4326. I'm using the ST_Transform function as in this snippet: ...
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2answers
52 views

Plotting points using coordinates from excel [duplicate]

I have an excel spreadsheet with co-ordinates (eg. S31 07 35.3). I would like to use these co-ordinates in arcmap (version 10.2) to plot points based on these coordinates. How do I go about doing this ...
1
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1answer
19 views

Change Projection

I am a little bit lost here. working in QGis 2.8, OS X 10.10. I have a polygon shp in the CRS EPSG: 21781, CH1903 / LV03 and a point file in EPSG: 4326, WGS84 How would I work with these ...
5
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1answer
85 views

Getting weird lines in Print Composer QGIS

I am working with QGis 2.8 and want to use the print composer to create a jpg image. I used this PlugIn (https://github.com/jdugge/ClipToHemisphere) to create the globe. The graticules I created the ...
0
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1answer
132 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 ...
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1answer
22 views

Unable to export Projected layer [UTM] to Google Earth from ArcGIS for Desktop?

When tried to export any vector layer in ArcGIS [projected in UTM] to Google Earth, it is falling away from the actual location. However, when I export vector layer in Geographical Coordinate System ...
0
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1answer
37 views

How to add spatial reference ESRI:102100 as a custom CRS to Geoserver?

I've been struggling with this for over a week. I'm using the ArcGIS Javascript API to create a basic map application, and I'm trying to add a WMS layer from my geoserver to this application. The ...
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3answers
69 views

ArcGIS Javascript API - How to define spatial reference for WMS layer?

I'm just starting with the ArcGIS Javascript API, and I'm having some issues adding layers from my geoserver to my basic map application. I started with the WMS resource info sample from the ESRI ...
3
votes
1answer
93 views

Obtaining length of non projected feature (gcs_wgs_84) in meters instead of decimal degrees?

I could not find a post which answered to my problem and I hope I didn't miss it, in case I did I apologize. I'm working with Arcgis 10 and I have a multiple lines feature with gcs_wgs_1984 ...
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0answers
25 views

How to get changed spatial reference of any layer in ArcMap using ArcObjects?

I have several layers in arcmap. I can access these layer's spatial references too. But if user changed one of spatial reference properties(eg. name, central_meridian etc.)of any layer, then how can I ...
0
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0answers
11 views

Real-world dimensions of a 3D object in VisualSFM or MeshLab

I have a good-quality, precise 3D scene reconstructed from photographs/video by VisualSFM. All camera parameters, including 3D position and lens details, are known. Now, that the hardest work has ...
0
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1answer
43 views

Measuring areas in WGS 84 [duplicate]

I started a QGis project with adding information layers from OpenStreetMap such as the streets and railways for a city. This data has WGS 84 CRS. After that, I made a shapefile with urbanized bodies ...
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66 views

How can I define coordinate system of feature class when overlaying with coordinate zone shapes in python?

I have generated bounding boxes for CAD drawings that do not have defined coordinate system files. I know that each drawing could be in one of 6 different systems that do not overlap. My idea was to ...
7
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2answers
456 views

Why are heatmaps on qgis 2.8.1 produced in the wrong CRS?

I noticed that the heatmap calculation on the new upgrade version of qgis is given the raster map without any coordinate system. Have you got the same problem?
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0answers
29 views

ESRI/Mapinfo MGA56 prj vs QGIS MGA56 prj

I am trying to understand why the degree unit is different between ESRI/Mapinfo and QGIS: ESRI/Mapinfo ...
3
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3answers
145 views

Which projection is best for mapping the contiguous United States?

If I wanted to project latitude & longitude data for the contiguous United States (the United States excluding Alaska and Hawaii), which projection would I use? I prefer more accurate distances ...
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3answers
67 views

Project only required shapefiles in folder

I have 8 shapefiles in a folder with shapefile 1 and 8 in the same projection and the others (shapefile 2-7) if different projections. Is there a way to use python to use shapefile 1 as the ...
1
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1answer
33 views

How to know spatial references of two layers are same?

I have two layers . Now I want to say that the spatial references of these layers are same or not .. I am using .Net technologies in arcmap. I have successfully got spatial reference information ...
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1answer
53 views

Georeferencing Old Mining Maps (Floetzkarte des Oberschlesische) in QGIS?

I am trying to georeference some old mining maps (Floetzkarte des Oberschlesische) in QGIS 2.9. I have already tried to do that by marking known points on present satelite photos, but the results were ...