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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0answers
27 views

Calculating area with Europe Albers Equal Area in QGIS [closed]

I am trying to calculate the area for a number of polygons in EPSG:102013, having changed it from EPSG:3857. When using the field calculator $area, the entire column was returned as nan. Has the ...
0
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0answers
33 views

same projections but different extents

I have two shapefiles that contain the same projection (WGS_1984_UTM_Zone_51N) but their extents are far from each other. One shapefile has this parameters: Left:2.000000 m Right:7791.000000 m ...
0
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0answers
39 views

Is it possible to find Lat,Long coordinates of points within a polygon whose GPS coordinates is known [duplicate]

I have a set of gps coordinates which make up a polygon. Is it possible to find Latitude,Longitude coordinates of points within this polygon using GPS coordinates of the polygon I already possess. ...
1
vote
1answer
27 views

Adding multiple datasets to ArcMap with the same coordinate reference system but different transformations

I want to be able to load multiple datasets to my mxd, using various CRS (coordinate reference systems). Some of these datasets will use the same CRS, but with different transformations. When I load ...
0
votes
1answer
50 views

What would a map of the world look like if lat/longs were treated as projected coordinates? [duplicate]

I'm not quite sure if I'm phrasing this right. It's just occurred to me that lat/longs are two dimensional coordinates like any other projected coordinate system, so it's presumably possible to create ...
1
vote
1answer
65 views

What projection to use for many parts of the world

I'm creating a poster which has many separate maps (rivers of the world). I'd like to use a similar projection for each of them, so they're comparable in terms of shape and size. I guess I want some ...
1
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0answers
57 views

Georeferencing reversal of image

I georeferenced a map and it posted to canvas as a mirror image of the original map. I set my project CRS before starting and also made sure to set the same SRS for the Geotiff being created and ...
0
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0answers
45 views

Creating a kml file in Google earth in UTM format to get attributes in UTM format

i want to create kml file in google earth and use it in UTM coordinate system for preprocessing in HEC Georas.When i imported the kml file in GIS, it still showed the attribute in WGS format as in the ...
0
votes
1answer
32 views

error: 'Cannot read property 'divideBy' of undefined', L.Proj with esri.leaflet

I am trying my first attempt at adding an (in-house published) ArcGIS basemap to a Leaflet based web application, using Proj4Leaflet and esri-leaflet. Here is my js: var crs = new L.Proj.CRS('EPSG: ...
1
vote
1answer
80 views

How to detect coordinate reference system (CRS)? – I cannot display two vector layers in QGIS at the same time!

When I in QGIS try to display layer (a) together with another layer (b) that differ in their CRS it doesn’t work. Both are vector shapefiles. I have tried both with using QGIS ‘on the fly’ CRS ...
1
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0answers
81 views

How do I get the lat-long coordinate of point 1 from a survey plan [closed]

Here are the data from the survey plan: TIE LINES from BLLM No. 3, PLS 561, to corner "1" of: LOT ----------Bearing--------------------Distance Boundary ----S 36deg 41min W ------11,641.21 meters ...
2
votes
3answers
73 views

Strange coordinate system [closed]

Here's an extract of a feature from the web that I converted to geojson using qgis. However, the coordinates are not standard are at all and when trying to actually preview it on the web it fails, ...
0
votes
1answer
63 views

Is there a way to transform a node OSM point into the reference GPS system of a car?

I have a car with a GPS (WGS84) and a camera (who shot the road) fixed on it. I would like to know is there is a way to get the transformation from a OSM node to the GPS cartesian coordinate fixed on ...
1
vote
1answer
72 views

how can I put those x y location in ArcMap?

Does anyone can help me some tips to put those x,y in the excel spreadsheet to Arcmap? It doesnt show on the map when I try. I think the problem is the projection. I tried coordinate system: ...
0
votes
2answers
64 views

CRS problem between QGIS and fiona / OGR

I have a really annoying problem working with QGIS for visualization and python (fiona / OGR) for the actual operations. I am, by example, doing a simple dissolving operation with fiona. The input is ...
0
votes
1answer
28 views

Where are coordinate system files saved when using the ArcGIS Citrix app?

Is there a standard location where coordinate systems are saved within ArcGIS when using a Citrix app? Or maybe a redirected folder location?
1
vote
1answer
46 views

arcgis 10.2 .shp with no projection info but .xml file

I need help opening a shp file which has no projection info in ArcGIS 10.2 I have .shp , .shx , dbf and .xml file. The .xml file details are below . QUESTION : can i make .proj from below ...
0
votes
0answers
60 views

bounding box - generate coordinates

I will be using mongodb database which supports data on an Euclidean plane (not spherical). I will be performing queries which return all points within a box. For the box I need to specify the upper ...
1
vote
2answers
104 views

Using Geotools: How to convert these strange coordinates from a shapefile into regular lat and long?

I use this dataset from the European Union: http://www.eea.europa.eu/data-and-maps/data/administrative-land-accounting-units Opening the shapefile with Java' Geotools, I see coordinates like: ...
3
votes
1answer
80 views

Is it possible to define a custom CRS for a shapefile in QGIS that uses hundredths of a US foot?

I have several polygon shapefiles whose coordinates are defined as 100x their original coordinates projected from the Washington State South HARN State Plane in us-ft (EPSG 2927). I would imagine the ...
0
votes
0answers
34 views

Proper projection name for NAD83 2011 revision

I have two PRJ files, one from ESRI and another from some custom GDAL/OGR code I wrote (pasted below). I was trying to have both work in NAD83 UTM10N with the 2011 revision. The ESRI file has 2011 in ...
2
votes
0answers
92 views

Converting local XYZ to geographic coordinates

I am working with a computer program called PEP for Windows by Airbus, which is able to calculate exact flight paths of an aircraft, based on many inputs like weight, temperature, wind, etc. The ...
3
votes
2answers
231 views

Is WGS84 a Coordinate system or projection system? [duplicate]

WGS84 is often referred to as a "projection system" and sometimes it is confusing to me about what a "projection system" is and where WGS84 falls in one. Could someone please clear that up for me?
1
vote
1answer
43 views

Good projections for Middle East and North Africa in D3?

I'm a data visualizer who's mostly worked with US data, and I'm familiar with AlbersUSA project. However, I'm going to be doing a series of graphics on the Middle East. Any suggestions or interesting ...
3
votes
1answer
87 views

What system do these coordinates use? (from LinkedGeoData.org)

I have extracted these coordinates from geolinkedata And I don't know what system they are using: (-15.4400797 28.131791000000003) What I know is that they correspond with these WGS84 Coordinates: ...
3
votes
2answers
96 views

EPSG:3575 projected bounds

I've been trying to find out what the projected bounds are for EPSG:3575 but have not been able to find a definitive answer. Normally, I'd just use the values from EPSG.io but when I tried these in ...
1
vote
1answer
79 views

Locating British National Grid Eastings/Northings in ArcGIS Pro i.e. ArcMap Go To XY equivalent?

In ArcGIS Pro is there a way to search for Eastings and Northings for Britain, similar to the Go to XY in ArcMap?
0
votes
1answer
52 views

Equidistant Cartesian projection for NYC

I'm working on a project in which I cluster locations in New York City based on their distance. My dataset contains latitude and longitude and thus I'd like to project it to a 2D Cartesian space in ...
2
votes
1answer
89 views

How to modify or create a wider UTM zone?

am working on a project to do country-wide mapping using projected coordinate system such UTM. However, the country (Zambia) is covered by three UTM zones, namely zone 34,35 and 36.I have read ...
1
vote
1answer
44 views

OpenStreetMap (OSM) data is misregistered upon download, in just one area?

I have a satellite image over the area of Forez, France. I checked that the landmarks on the corner points coincide with the landmarks of Google Maps at the same coordinates, so the image is not ...
1
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2answers
65 views

Using lists to work with feature classes having different spatial references in ArcPy?

This is my first arcpy script attempting to use lists. Input: 4 dif Excel files, each with a dif spatial reference Output: 4 dif feature classes (in same geodatabase), each with original spatial ...
1
vote
2answers
84 views

How to Convert Property Survey Monument Marker Coordinates to State Plane?

I have a set of Connecticut monument locations (a monumented property survey using monuments designated CGS Mon. No. 1577-1580). Their coordinates appear to me to be in meters (244536.84 N, 386409.67 ...
0
votes
0answers
63 views

How to project WRF data (lat/lon) onto ArcGIS maps

I have climate data generated using the WRF model, in lat/lon format (lambert conformal projection), in an Excel file. I'm looking to project / overlay this data onto a map of the UK using ArcGIS, ...
1
vote
1answer
40 views

Transform from Lambert Azimuthal “old” to ETRS89_LAEA

I'm currently struggling to convert a small .asc dataset with no defined projection. The projection that has to be first applied is Lambert Azimuthal "old" projection: In PROJ.4 +proj=laea +lat_0=48 ...
0
votes
0answers
20 views

Why do GRASS' NC dataset and USGS' CONUS dataset coordinates disagree?

In the course of trying to figure out a specific data extraction task, I'm trying to understand the coordinate system used by GRASS. For a while, I'd been working with elevation data near Raleigh, NC, ...
0
votes
0answers
17 views

R to ArcMap, erroneous change of spatial reference

I have SPOT5 imagery from Northern Sweden / Finland. Data is downloaded from SACCESS service and is provided in Sweref99 TM projection. When opened in ArcMap the data is shown in Sweref99 TM as ...
1
vote
3answers
83 views

Best projection / CRS for short-distance based analysis?

I'm having a bit of meltdown about projections and coordinate reference systems, and was hoping for a few pointers. I have 3 GIS projects, at 3 sites in Europe (the largest of which measures about ...
0
votes
0answers
30 views

What is coordinate system of US 1990 census tract data

I would like to set coordinate system of US 1990 census tract data using ArcGIS for Desktop. Do you know how I can do this?
0
votes
0answers
25 views

Table to ellipse not working properly

I have a point shapefile with fields major_axis, minor_axis, azimuth, POINT_X and POINT_Y. There are values in those fields. I run Table To Ellipse, it goes without errors but what i get at the end is ...
0
votes
0answers
34 views

Converting coordinate system of feature layers and datasets programmatically

I am trying to convert coordinate system of featurelayer and datasets using ESRI.ArcGIS.DataManagementTools.Project . The tool works fine in ArcCatalog . I have doubts about the parameters i am ...
1
vote
1answer
82 views

Project a set of coordinates - points from an excel into a shape file with unknown coordinate system (map-match)

I am trying to project a set of coordinates (points) from an Excel spreadsheet, on top of a shapefile (map) with an unknown coordinate system. The Excel file was created by first creating a map with ...
0
votes
0answers
46 views

Distance Measure appears to be wrong in ArcGIS Desktop?

The distances in my shapefile are completely wrong. I got this shapefile online. Does anyone knows what's going on? I attached two pictures. The shapefile is projected as ...
1
vote
2answers
153 views

Setting coordinate system for image in ArcMap?

I am a beginner with ArcMap. I have a problem with setting coordinate system for my image. I am using an add-in which creates shapefiles .shp (craters, area), grids, plots and etc. However I get ...
1
vote
1answer
34 views

Difference between GCS_European_1950 and GCS_International_1924

In ArcGIS, there are two datums they look like same except their names; GCS_European_1950 and GCS_International_1924. Where I started to work, I found out that they are using both datums. Since they ...
-2
votes
3answers
115 views

What's the difference between EPSG:4326 and EPSG:36232?

I do not understand what these different EPSG's mean, even though they are both under WGS84. The way the latitude and longitude values displayed are different in both the cases when I try to change ...
4
votes
2answers
368 views

Difference between latitude and longitude

It occurred to me that latitude and longitude are not homologous in that the lines of latitude lie on parallel planes or slices through Earth, while lines of longitude are not parallel and meet at the ...
3
votes
1answer
44 views

Exporting BNG coordinates from MapInfo (27700) without rounding

I have a TAB file in ESPG 27700 projection and MapInfo is rounding Y coordinate values upon export. It also occurs when viewing the table (although selecting the value shows its 'true' form) Upon ...
1
vote
1answer
115 views

How to convert GDA eastings/northings to WGS84 lat/long in QGIS

I'm using QGIS to map weed locations and have a mixture of data from GPS, shape files of contours, OSM all in a project with CRS WGS84 (lat, long). I am trying to add in a shape file I have been given ...
3
votes
1answer
94 views

How to convert Chinese Beijing 1954 coordinates to WGS84

I have a series of coordinates for locations in Sichuan Province China that I need to convert so that I can use them in Google Earth. The coordinates are "1954 Beijing coordinates system" and show up ...
4
votes
1answer
66 views

Changing the projection transformation for a feature class after adding it to an mxd

Is there a way to select a different projection transformation after you've added a feature class to an mxd? I have a pretty complex mxd set up to use as a map service where the original data is in ...