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.

learn more… | top users | synonyms (3)

0
votes
1answer
66 views

Convert WGS-84 position into lat/lng

I am using leafletjs. I have a list of "WGS-84" positions that look like: LATITUDE N45 52.1096 LONGITUDE W125 52.4665 LATITUDE N48 24.1051 LONGITUDE E174 37.3832 What is the significance of the ...
0
votes
1answer
62 views

Layers with the same projected coordinate system and geographic coordinate system do not overlap [duplicate]

I have a blank map, I've set the data frame to the same projected coordinate system as the data I'm going to add. I have added one shapefile and it looks good. When I wave the cursor over the map the ...
1
vote
2answers
120 views

How to identify, spatial references of two layers are same?

I have two layers. Polygon layer Polyline layer Now I want to check if spatial references of these two layers are same. How can I achieve this ?? In spatial reference there are many property ...
1
vote
1answer
56 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
votes
3answers
403 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 ...
0
votes
1answer
79 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 ...
2
votes
1answer
98 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
vote
1answer
71 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 ...
2
votes
1answer
126 views

Translate coordinates between different CRS

There are two Coordinate Reference System, say they are wgs84 and crs2(a local crs). A certain location can be translated from wgs84 to crs2 by official algorithm, and the algorithm is ...
1
vote
3answers
248 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 ...
0
votes
1answer
77 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 ...
2
votes
1answer
61 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 ...
7
votes
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.
1
vote
0answers
44 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?
2
votes
4answers
168 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 ...
1
vote
0answers
52 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 ...
6
votes
1answer
121 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 ...
1
vote
0answers
50 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 ...
1
vote
0answers
70 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 ...
2
votes
1answer
77 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 ...
3
votes
1answer
58 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 ...
0
votes
0answers
65 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, ...
1
vote
1answer
44 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
votes
0answers
76 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
1answer
84 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 ...
0
votes
0answers
28 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
63 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
vote
1answer
56 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: ...
1
vote
0answers
46 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 ...
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
97 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
vote
1answer
77 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 ...
1
vote
1answer
123 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 ...
0
votes
0answers
70 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. ...
1
vote
1answer
56 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?
2
votes
0answers
35 views

How do I trick QGIS's map composer into chopping off the 000's in UTM coordinates?

In QGIS 2.8 (ubuntu), you can create a map with ticks and labels. I want the first two digits to be smaller sized, the next 3 to to be normal sized, and hide the last 3 digits. QGIS does not offer ...
1
vote
1answer
56 views

WKID matching EPSG

Is there a way to matching the code of ESRI WKID with EPSG code? I'm trying to find the coordinate system of PCS Name = CGRS_1993_LTM. Which has WKID:102319 code. But I donn't know the EPSG code.
1
vote
1answer
84 views

Trouble buffering a vector layer in QGIS with PyQGIS

I am working on a script that imports a .csv layer that has lat long coordinates, which I then want to buffer in feet. I've created a vector layer from the .csv file and tried to set the coordinate ...
2
votes
1answer
479 views

What coordinates are expressed in 6-7 digits numbers?

I am processing XML documents containing geographic information, and even though they are coming from the same source they are using different coordinates units. The first one is a regular ...
0
votes
0answers
49 views

How to Transform Many Projections Into One With SQL Server

I know very little SQL Server, but am quite familiar with Arc and Python. The data I want to transform is point data which is in a single table [ID], [X] [Y], [COORDSYS]. There are 5 possible ...
2
votes
4answers
118 views

Calculate percentage of land cover within a buffer in meters, not decimal degrees

I am trying to calculated the percentage of land cover within a buffer area (3000m) around my coordinates. My output is in decimal degrees but I want it in meters or at least that I can calculate the ...
2
votes
0answers
85 views

QGIS 2.8 Raster Layers Moved [duplicate]

I recently downloaded QGIS 2.8 and opened an existing project in it to check how it handled it and make any changes required. This project includes several raster heatmap layers. My problem is that ...
1
vote
2answers
67 views

How to project WMS layers from GCS_WGS_1984 to UTM ED50 31N using ArcMap?

I'm using a WMS service to open different layers. Specifically I'm using this link: http://w24.bcn.cat/WMSBaseGuia/request.aspx I have the following problem. When I open these layers with Arcmap, ...
0
votes
0answers
57 views

CRS, pixels, and floor diagram

I am trying to create a building diagram for use in a DevExpress map control. My goal is to display a raster image background in the control with a vector overlay that defines features of interest. ...
9
votes
2answers
1k 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?
3
votes
1answer
30 views

Do I need to transform wind vectors when changing projection from EPSG4326 to EPSG24373?

I have a set of points and polygons given in "normal" lat/lon coordinates EPSG4326, which I need to transform to EPSG24373. I can do this without problem using PROJ4. However, I also have wind ...
0
votes
1answer
192 views

Shape file fails to import into Google Earth Pro

My shape file fails to import into Google Earth Pro. Is the map projection of my shape file to blame? When I heard Google Earth Pro was now free I thought it might be a good tool for non-GIS people ...
1
vote
1answer
54 views

Rotation matrix in the EPSG

I use Proj4j for a WebGIS and I have to create a new ESPG. I tried on QGIS to convert coordinates from a local system (in Greece) to a world coordinates system. First, I have to do a 2D ...
0
votes
0answers
35 views

Projecting NAD83 on-the-fly to WGS84 [duplicate]

I have a point feature class in a geodatabase that uses WGS84 as its SRS. A colleage of mine created points in this feature class using an external database containing lat and long values. However, ...
2
votes
2answers
137 views

Assigned projection and an unprojected WGS84 geographic coordinate system

I am to be submitting a shapefile for review but the first two requirements have me confused. Are these requirements conflicting or am i just not understanding the question? Requirements: The ...