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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13 views

Text box with automated coordinate reference system in use on Qgis

Using an expression, is it possible to automatically fill a text box placed on the map (in the composer) showing the reference coordinate system of the project? If possible, how would that expression ...
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21 views

Store WGS-84 degree decimal minute coordinates in postgis database [duplicate]

I have some data in a texfile where the coordinates are given in this format: lat lon 23S19.69 66W45.87 24S01.73 66W55.61 I already learned that it is some kind of WGS-84 with degree and ...
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1answer
33 views

Points and polylines representation of coordinates in QGIS? [duplicate]

I am working on the "Jakarta Bay", Indonesia. I have a shapefile for the Indonesian coastline and I clipped my region of interest using an appropriate polygon. I also have points that are located ...
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2answers
31 views

About defining coordinate reference system

I have been wondering about the following issue for several years. In ArcGIS and QGIS you can add data on your map and it aligns perfectly even when the Coordinate Reference System (CRS) is not set. ...
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0answers
25 views

iGIS failed to load shapefile?

I am using iGIS for iPAD When I try importing one particular shapefile it gives me an error(see attached pic) saying I have the wrong projection. It is the same one I use on my other 10shapefiles ...
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2answers
32 views

Proper way to check if a Factory Code is Projected or Geographic

I would like to create a SpatialReference with ArcObjects, but I won't know whether it is Projected or Geographic, I'll only have the SRID. Is it fine practice to use ...
1
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0answers
20 views

problem with view of open layer plugin map and swiss national coordinate system in print composer

Mi projects are in the swiss coordinate system (CH0193+ / LV95) and I use Open Layers Plugin for the base map (google streets). In the normal window, this seems to work fine: As soon as I open ...
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1answer
18 views

Convert coordinates into decimal using SQL Server

I am looking to convert a pair of coordinates to decimal, and am unsure how to go about doing it. The following script select Centroid.STY as Longitude, Centroid.STX as Latidude from ( select ...
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35 views

Debugging specified WKID (factory code) or WKT (definition string) is not Projected Coordinate System? [on hold]

I am producing a floodplain map using ArcMap 10.1, Hec-Ras 4.1.0 and Hec-GeoRas toolbar extension. I have created XS cut lines and river and bank data in ArcMap 10.1, having imported LiDAR data ...
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0answers
21 views

How to make a polygon and point shape file line up to do a spatial join?

I have a polygon with a North_America_Lambert_Conformal_Conic coordinate system and a point shape file which had a WGS 1984(DD) coordinate system. I defined projection and projected both of them to ...
4
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1answer
50 views

How to center a user-defined CRS on an area of interest?

My study extent in central Iran straddles two UTM zones (39 and 40): I would like to create a user-defined CRS in Transverse Mercator projection with central meridian inside this area. Through ...
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2answers
37 views

How do I go from the results of Calculate UTM Zone (Cartography) to a spatial reference object?

Calculate UTM Zone (Cartography) assigns a UTM zone to each feature within a feature class as a field value. The value returned is a 'UTM spatial reference string', which is a long string that looks ...
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0answers
21 views

Projected CRS interfering with Spatial Analyses?

I have come across a problem I am very puzzled about. I am working with two polygon shape files, one of which is a buffer around the other, and a point shape file in a project set to EPSG:54016. All ...
0
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1answer
66 views

How to measure distance in an image without georeferencing?

I have an image which precisely represents an area of 10m by 10m. I don't have precise corner coordinates for the plot. Is there a way to create a coordinate system and specify the length of each ...
3
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1answer
101 views

How do I figure out the length of polyline features in a feature class with a WGS 1984 coordinate system?

I'm trying to figure out lengths of polyline features in a feature class with a WGS 1984 coordinate system. Here's code to list lengths: >>> import arcpy >>> inFc = ...
2
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1answer
44 views

Proj4 for EPSG3857

I am using leaflet and the R library sp. The CRS from my leaflet map is EPSG3857 - WGS84 Web Mercator. I am retrieving the coordinates of my current map view with getBounds(). For further calculations ...
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1answer
31 views

Arithmetics with Coordinates [duplicate]

I wonder if I can do simple arithmetics with coordinates. Can I do substraction of coordinates like 2.570801 (lng) 46.89023 (lat) / 17.424316 (lng) 55.15377 (lat)?! Or will that get messy without a ...
3
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1answer
43 views

CRS does not match after upgrade to QGIS 2.2

QGIS project, which was saved in 2.0 has defined CRS for project as a whole and for each of the layers. When I open the project in QGIS 2.2 and higher, one of the layers is shifted and does not match ...
0
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1answer
23 views

How can I assign spatial information in ArcGIS Pro?

I am very new to ArcGIS and I hope I have over-looked something obvious with this! I have a set of polygons that have been loaded into ArcGIS Pro 10.3 without coordinate information. Unfortunately, ...
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0answers
10 views

Creating (manually transforming) a DXF in WGS84 lon/lat coordinates. In which coordinates do I have to define blocks?

I've got a DXF file that represent a map with lines, texts, and some symbols (blocks in DXF). I need to transform coordinates from a local cartesian system to WGS84 lon/lat coordinates, maintaining ...
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0answers
9 views

Two polygon layers have same epsg code, yet there's a irregular shifting in the placement between the two. [duplicate]

We recently recieved a dataset from another organization which share our projected coordinate system. In the past the data has always loaded in the exact same location. This time, when the data was ...
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2answers
28 views

How to define a coordinate reference system with rotation in GeoServer?

I am using GeoServer and have a layer in EPSG:900913 ("Google Mercator"). I need to "rotate" the map around certain point (say, 1500000, 7000000) by certain degree (say, 30 degrees clockwise). How ...
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2answers
50 views

Calculating geometry for feature class with x/y and Lat/Long values in different projections?

I have a feature class with x/y values populated on the native projection of the feature class (state plane). In the same feature class I also have Lat/Long fields that I need to populate (WGS 84 in ...
0
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1answer
17 views

How to display EPSG:32649-WGS 84 image on EPSG:4326 map in ArcMap?

I have a image has EPSG:32649 coordinate system and I wanto display this image on a EPSG:4326 map on arcgis desktop (arcmap) . Any one can help me?
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26 views

Geographic Coordinate System NAD 1983 vs Projected Coordinate System NAD 1983 & Projections

I am working on a project utilizing free data from http://www.pasda.psu.edu/, specifically data from PennDot, 2015 Pennsylvania County Boundaries ...
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1answer
20 views

coordinate system disappears when I use publish map and iframe tag in geoexplorer?

I managed to add xy coordinate in geoexplorer, I use opengeosuite to use geoexplorer. I added the openlayer mouseposition code to the composer in order to show the coordinates. Please consider my ...
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1answer
36 views

list of coordinates with unknown projection

I've a list of coordinates which were recorded in a last years aerial survey. Besides this I've the flightlog. The list of coordinates was created "manually" by writing down the position into a ...
1
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1answer
35 views

Wrong parameters for ESPG:42304?

I need to use the Lambert Conformal Conic for Natural Resources Canada EPSG:42304, which I could not find in QGIS 2.10.1 CRS list. I located the proj4 parameters on-line from three locations, all of ...
0
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1answer
18 views

Editing with projected coordinate system defined for data frame

I am looking for some confirmation on my understanding of the information message Spatial Reference Does Not Match that I receive when starting an edit session. I have been told by so many that you ...
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0answers
6 views

NBI Coordinate Data Missing place-holding zeroes for DMS format

When working with National Bridge Inventory (NBI) coordinates I have found what appears to be an error in the raw data provided. I couldn't find any other mention of this specific error when ...
3
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1answer
32 views

Projected coordinates for Well-known ID 5232 cannot be found in ArcMap?

Projected coordinates for SLD99(WKID- 5232) cannot be found in ArcMap Coordinate system. Is there any built in procedure to find that original coordinate system in ArcMap 10.3? If not what is the ...
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1answer
24 views

QGIS Processing Input CRS from Input Layer

I'm creating a Processing algorithm that requires the user to input several parameters including an input layer and an output CRS. At present, the tool defaults to SRID 4326. I'd like for the CRS ...
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0answers
31 views

Schematic Map in GIS Tools?

The Question: Is there way to leverage GIS tools to author/edit a schematic map where elements' geometries has canvas-based coordinates rather than real-world coordinates on Earth? Perhaps to ...
0
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0answers
5 views

SegFault on create an EmptyDataSource From a typedef

I had to create a specific type of point, in order to do that I create a function that create a layer from shp file and data extract of the Code : typedef bool ( *createEmptyDataSourceProc ) ...
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0answers
22 views

Converting a geocentric latitude to a geodetic latitude [duplicate]

I'm working with a 3D model of the earth (WGS84). The input to my problem is a geocentric lat-long. Is there an efficient way to convert this to a geodetic lat-long? My initial attempt to solve ...
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0answers
11 views

France Coordinate Systems

Is anyone ever imported into Manifold files in the new French system. Manifold propose RGF93 but apparently I can not specify the area described (CC47). Thank you for any information.
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0answers
24 views

Wrong axis order in geotools crs when reading from EPSG:4326 [duplicate]

Map<String,Object> params = ...; // postgis params DataStore dataStore = DataStoreFinder.getDataStore(params); SimpleFeatureCollection collection=...;// collection to save SimpleFeatureType ...
3
votes
2answers
139 views

Difference between CoordinateSystem and CoordinateReferenceSystem

What is the concept of Coordinate Refenrece System. You know GeoTools has a FeatureType class having getCoordinateReferenceSystem() function and also a CoordinateReferenceSystem class having ...
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0answers
22 views

Integrating New Coordinate System as Default in ArcGIS for Desktop?

I have a database in Postgres whose Coordinate System is a local one. I mean it is not defined as default in ArcGIS 10.2 for Desktop. On the other hand I have ArcGIS with SDE working over Oracle. ...
1
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2answers
22 views

Is publishing geodata in unprojected latlon coordinates better than a local UTM projection?

This is meant as some kind of reference Q&A. Unless I am working with truly global data, I always prefer projected, local, metric coordinates so that calculations like area or distances are ...
0
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0answers
25 views

Problem using EPSG:3395

in my application I use OGC:CRS83 for the coordinatereferencesystem, but now I had to change it to EPSG:3395 when I call : mQgsCoordinate->createFromOgcWmsCrs("EPSG:3395") there is nothing in ...
1
vote
1answer
44 views

Is setting raster CRS in QGIS georeferencer useless? Still have to choose the same for target SRS?

I'm trying to move out of ArcGIS into QGIS permanently for basic operations, so be patient please. Here is the problem. I'm trying to georeference a topo map in EPSG:22523 (Corrego Alegre UTM). I did ...
0
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0answers
31 views

How to get a layer's projection

I'm using GeoNetwork 3.0 where users can upload their own layers from the interface to my GeoServer. GeoNetwork 3.0 uses OpenLayers3. For my application, I need to determine the crs from this layer so ...
1
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0answers
37 views

Query all Object within n kilometer Radius with Hibernate Spatial?

I use hibernate spatial attach a geolocation to a car. My card domain class looks like this: import com.vividsolutions.jts.geom.Point class Card { String name Point location } My program is ...
2
votes
1answer
65 views

After how much distance does the x,y coordinate system become noticeably distorted?

I'm working with maritime sensors that give information of moving objects it detects, in azimuth, range and elevation, and we convert it to x,y coordinates for our application to be able to process ...
1
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1answer
31 views

Polyconic Projection for China?

I have a set of locations/points and I am trying to compute the nearest distance of these points from a Polyline. The points and the polyline lie in China and the Geographic Coordinate System is WGS ...
4
votes
1answer
143 views

How do I find/define a projection that gives me exact relative positions inside an area?

Assuming that a set of positions are all inside a 5km square area: How do I find/define a projection to reproject the positions, so that the relative positions between the now reprojected positions ...
4
votes
1answer
54 views

Coordinate Projection Issue in ArcGIS Pro

From an issue with buffer overlaps, there was this weird problem occurring with an intersect not matching up with the buffers in ArcGIS Pro as shown below: Upon opening the same exact buffer, with ...
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0answers
8 views

Problem with the DSID Data Set Identification

In my s57 file, I need to set the extent of the mapcanvas, for that i use : mpMapCanvas->setExtent(mpS57->mMapplay.value(DSID)->extent()); but if I display the value of the extents xmin, ...
0
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1answer
22 views

Is label offset only possible in PCS?

I'm working with ArcGis 10 and I need to show the name of the streets along the street line. I want to increase the distance of the label from the line and I saw in the Label Tab I can control this by ...