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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1answer
52 views

Python - Projecting different shapefiles in the same folder

I have a few shapefiles in one folder with different coordinate systems but would like to use one of them as a template dataset. Is there a way to use python to filter out the shapefiles already in ...
3
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1answer
1k 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 ...
1
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0answers
23 views

Wetterzentrale maps georeferencing - coordinate system?

I'm trying to georeference two maps from wetterzentrale in ArcGIS. In what coordinate system are those maps created?
6
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2answers
465 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) ...
1
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1answer
294 views

Haversine formula to calculate distance between real coordinates?

I need to calculate distance between two stations in a map in order to calculate empirical variogram in ordinary kriging to interpolate temperature data. Calculating distance in kriging using ...
4
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0answers
92 views

What projection system is used in China which is aligned with WGS84 [closed]

I have some GPS tracks in Beijing. I want to project it and convert the lat long degree values in meters for calculation in euclidian space. I was wondering what is the most suitable coordinate and ...
3
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4answers
4k views

WKID (Well Known ID) for national projection for ArcGIS REST API

I have to use my national projection system which does not have corresponding WKID listed for ArcGIS REST API. Without it I am unable to use this projection system for my web application. Any ...
3
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2answers
2k views

Convert GPS coordinate to ArcGIS x,y point?

I'm trying to plot some AGSSimpleMarkerSymbol's in a AGSGraphicsLayer. The issue I'm running into is that the data I'm starting with are GPS coordinates (lat/lon). I'm using AGSPoint to plot the data, ...
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1answer
163 views

How to reproject from Clarke_1880_RGS_Lambert_Conformal_Conic to ETRS_1989_LAEA?

I am unable to reproject Marseille shapefiles from Clarke 1880 RGS_Lambert_Conformal_Conic to ETRS_1989_LAEA. I know that Clarke is a geographic coordinate system and it has no datum. I have tried ...
2
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1answer
48 views

Excel worksheet for Coordinate transformation between EPSG:31467 and EPSG:25832?

for offline use I have been asked to provide a coordinate transformation worksheet in excel that converts between EPSG:31467 and EPSG:25832 and also WGS84. Has anyone any experience with something ...
1
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1answer
39 views

Set GPLinearUnit type parameter default based on input spatial reference (Buffer Example)

Within a .pyt python toolbox I'd like to have a parameter of data type GPLinearUnit get a default value based on an input Feature Class (FC). The standard Buffer (Analysis) tool works as a great ...
0
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1answer
50 views

Adding points defined by Latitude and Longitude to map using QGIS?

I have an OS map on which I want to display points defined by Latitude and Longitude, but the map coo-ordinates have values I do not recognise or understand. The image shows the map, with my first ...
16
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8answers
11k views

ArcCatalog complains that spatial references don't match between a feature dataset and a feature class that have the same coordinate system?

I have a feature dataset that is using the GCS_WGS_1984 as the geographic coordinate system. It includes a few feature classes. This feature dataset is itself in a file geodatabase that contains a ...
1
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1answer
128 views

How to convert Geographic wgs-84 to lambert (LCC_wgs 84 projection for a vector file?

I have one shape file with Geographic wgs-84 projection but i need to calculate geometry for that I tried to convert it into UTM projection system. As my data is of whole country so I can't give one ...
1
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2answers
145 views

How to manage the CRS of Open-Layers plugin in QGIS?

I am working with OpenLayers plugin in QGIS 1.8 but I am not sure on how should I manage thc CRS. The defaul CRS for Googles/Bing layers is WGS84/Pseudo Mercator (EPGS:3857) but I am not sure on the ...
7
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3answers
1k views

Is there a name for 0,0?

Is there a name for the latitude/longitude pair 0,0? On a graph, (0,0) is referred to as the "origin" but I'm not sure if that term also applies to the location 0,0 in cartography.
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1answer
184 views

Tiled raster image to be placed in an OSM/ Leaflet.js map

I have a mapoverlay in a custom projection which I need to add as a layer to an Openstreet map within a website. Since I was not able to change the projection earlier, I decided to manipulate the ...
2
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4answers
69 views

Meter Coordinates to decimal Coordinates

I have an excel file in which I have XY coordinates, example on the attached immage that is the form XCoord | YCoord 15822.426100 | -2747650.026000 I need them in the form ...
2
votes
1answer
31 views

Adjusting extents so that same-CRS shapefiles overlap in QGIS?

I have two files with identical projections/CRS. Using both OTF on & off I cannot get them to overlap: one shapefile contains coastal polygons of Massachusetts, and the other shapefile contains ...
1
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0answers
25 views

converting coordinate/reference system on IDRISI Selva

i had converted my shp.coordinate/reference system from plane to UTM 48S in IDRISI Selva by change it directly at its layer properties. And after, theres message said that the changing is only for ...
1
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0answers
38 views

Reproject before a Spatial Join

I have one polygon file containing all German municipalities as well as a point file. For each municipality, I would like to compute the average of a certain attribute of all points within the ...
5
votes
1answer
79 views

EPSG code as dynamic text in ArcGIS

Is it possible to get ArcGIS to show the EPSG code for a coordinate system as dynamic text? The default text is quite verbose (see below), and I think just showing the "Coordinate System" is probably ...
0
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1answer
427 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 ...
2
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2answers
262 views

Writing shapefile with projection defined crashes fiona

I've just started trying to use Fiona to write out shapefiles. I found the example code below, which seems to work fine from shapely.geometry import mapping, Polygon import fiona # Here's an example ...
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0answers
36 views

ArcGIS Server WMS URL Syntax Incorrect

Having a strange issue consuming WMS services hosted on ArcGIS Server 10.3. When the service is cached in ESRI's compact format, the request fails with HTTP 400. In exploded format, it works ...
0
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3answers
307 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 ...
2
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1answer
32 views

Are there different EPSG codes for 6 digit, 7 digit and 8 digit UTM Zone32 coordinate systems (CRS)?

I get data sent to me in various flavours of EPSG:25832. Unfortunately, everyone thinks that their own EPSG:25832 is the correct one. Some send data with the 32 at the front, others with just a 2, and ...
2
votes
1answer
130 views

Can you create a CRS of superseded NSW Datum

I want to use a superseded projection (NSW integrated survey datum - referred to as ISG) because my main client utilises it. The projection is based on AGD66. We regularly receive survey files in this ...
4
votes
6answers
276 views

If I were flying over a flat world at constant elevation, taking aerial photos, how would I patch them into a mosaic?

Restating the question: If I were flying over a 2 dimensional world, at a constant altitude, how would I patch those images together? I'm using some tools right now that assume I'm doing a panorama ...
3
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3answers
4k views

Converting from an x-y coordinate system to latitude/longitude

I'm building an indoor wifi-based tracking system that can calculate the position of a device in meters relative to the sensors distributed throughout the building. So far I've gotten to the point ...
3
votes
2answers
2k views

How to convert 6 digit latitude & 7 digit longitude to degrees

Sorry, but I'm a bit new to the whole GIS world, and though I am making great headway drawing polygons and such in Bing Maps, I am currently stuck. In our SQL spatial data, I came across MULTIPOLYGON ...
2
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2answers
1k views

Transforming coordinates between wgs84 and UTM ED50 31N, what am I missing?

My problem is I must tranform a point cloud from wgs84 (geographic) to UTM (projected) ED50 for zone 31North. Easy, isn't it? Well, first surprise is I have several free webs who offer me this ...
3
votes
1answer
47 views

CRS not embedded by maptools in R

I'm using the maptools package in R to merge some data to a shapefile. When I open the original input shapefile in QGIS, QGIS automatically picks up on the CRS. When I open the output shapefile from ...
1
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1answer
29 views

National Bridge Inventory (NBI) data coordinate system

I am trying to import the National Bridge Inventory Lat/Long data into ArcGIS. But when I do it with WGS 1984 Geographic coordinate system, they don't match with the base maps. I don't where I am ...
0
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0answers
27 views

Obtaining ECEF Velocities from givens of LLA coordinates, heading, and speed

If you are given positional data in lat/long/altitude (LLA) along with a heading and speed, how do you go about computing the Earth Centered Earth Fixed (ECEF) components of velocity? Additionally, ...
0
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0answers
43 views

Erroneous location when converting from a GCS_WGS_1984 to UTM

I have a shapefile map of Belgium divided by cantons that I want to re-project in order to have units in meters and to be able to calculate distances. I know how to do it with ArcGIS Projection tool, ...
0
votes
0answers
23 views

Polygon Shifting in WGS 84

I'm troubleshooting some discrepancies between intersection results in State Plane and WGS 84. The intersect was ran when both the polygons and points were same PCS ...
1
vote
1answer
46 views

Re-projecting point data using ArcMap

I've created a point data layer in QGIS using a .png image as a template. Of course the .png had no projection, and when creating the new shapefile I chose the WGS_84 coordinate system. Now, I need ...
1
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0answers
40 views

Which projection should be chosen to model transmission lines across the USA?

I am looking at different options for high voltage power lines in the US. These power lines cross several states. Since in the end the distance is of importance, is the USA Contiguous Equidistant ...
1
vote
1answer
172 views

Modify CRS to match boundaries of shapefile

I have boundary data in WGS'84 lat/long and data in a custom generated CRS. The data in the generated CRS appears to be offset by a particular vector compared to WGS'84. I want to attempt to match the ...
1
vote
1answer
42 views

Coordinate system ID ArcGIS

I have satellite image files with metadata generated from ArcGIS: Raster Download Information Coordinate system ID WGS84: 4326 Top edge WGS84: 35.0003681085064 Degree Bottom edge WGS84: ...
13
votes
2answers
2k views

Which function for creating a POINT in PostGIS?

When defining a Point in PostGIS, when do you decide to use which of the following? ST_SetSRID(ST_MakePoint(lon,lat),4326) ST_SetSRID(ST_Point(long,lat),4326) ST_SetSRID(ST_GeomFromText('POINT(lon ...
1
vote
3answers
896 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. ...
1
vote
1answer
57 views

Different definition of EPSG:3857 in GeoTools and QGIS

I want to do some checking if my point lies in any of the polygons defined in shapefile. So, I thought that I will determine CRS from shapefile (created in QGIS), and use it for transformation (where ...
2
votes
1answer
102 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 ...
0
votes
0answers
25 views

A shapefile not projecting correctly [duplicate]

I have this polygon shapefile not showing on the same view even they have same projection. The data frame has also same projection with the other. I can zoom to layer the polygon shapefile but the ...
2
votes
1answer
47 views

Adding spatial reference to raster data using ArcGIS Pro?

New to ArcGIS Pro - I want to add a spatial reference to a raster file I have downloaded (in this case from Nearmap.com). When I click properties of the raster file through the new project TAB in ...
1
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1answer
53 views

How to georeference two pictures that do not have crs in QGIS

I would like to take aerial pictures of my research plots an caculate NDVI and NDWI. How do I do that in QGIS?
1
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1answer
45 views

Finding adjacent grid squares in MGRS/USNG

Given an MGRS grid reference, for example 4QFJ123678 (100m precision), is there a good way to obtain the adjacent squares (north, south, east and west) from that origin square? Is it better to ...
0
votes
0answers
55 views

Generate tile package with SRID 31468

I want to show feature layers from shape files with srid 31468 using ArcGIS runtime. I want to use a custom raster base map. For that reason I successfully create a .tpk file using ArcGIS desktop. ...