The process of translating a map or spatial data from one geographic projection to another

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184 views

Orthographic reprojection with mapnik

I am trying to create a google earth like wep application. My problem is that I can't get to render a full view of the earth. The zoom_all() function generates the following error : RuntimeError: ...
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3answers
2k views

Openlayers vector feature coordinates are not transforming,

I have a OpenLayers vector with a single feature [0]. It's coordinates are in the map projection (EPSG:3413) and I want them in WGS84 (EPSG:4326) decimal degrees. I have the following code which ...
2
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1answer
238 views

ArcGIS JS API Polygon's WKID conversion with gsvc.project

I'm trying to convert polygon from wkid 3301 to wkid 4326. I've been using this code snippet for converting points, but I'm not sure how I would accomplish this to create a polygon object. I'm not ...
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0answers
249 views

Getting: org.opengis.referencing.NoSuchIdentifierException: No transform for classification “Transverse Mercator Zoned Grid System” with geotools

Using geotools I've been trying to create a referenced envelope after converting/reprojecting from WGS 84 to UTM with specific zones and it seems that either I need to do something with authority ...
3
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2answers
131 views

Performance loss for OpenLayers EPSG transformation? Storing GeoJSON coordinates in lat/lon or in native map projection?

For a project the map projection is EPSG:32468 (tiles). On top of the map, two or three GeoJSON LineStrings should be displayed using OpenLayers. Each LineString has about 1500 coordinates. ...
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1answer
238 views

R: data.frame to raster object error

I have a data.frame consisting of a points with an associated continuos value and their X,Y coordinates. Altough it's not stored anywhere it's projection is a Lambert conformal conic. I think this is ...
4
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3answers
146 views

How to transform FileGDB featureclasses from custom local coordinate system?

Background: Started working for company that is in middle of system-wide IT upgrade including GIS data. Existing in-house data is in a FileGDB, is in an assumed coordinate system and represents 1000 ...
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1answer
259 views

British National Grid to KML results in offset polygons

I have a shape file of English wards from ONS. It is similar to the files available here: http://www.ons.gov.uk/ons/guide-method/geography/products/census/spatial/2011/index.html except I had to ...
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1answer
185 views

Why does FME Reprojector create coordinate values 0?

I'm using the NeighborFinder transformer in FME Desktop 2013, and I need it to use a maximum distance in meters. My input data, however, are points and lines in WGS84, so before sending them into the ...
2
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1answer
251 views

Transformation of user-defined projected coordinatesystems

I want to transform from one projected coordinate system (pcs) to another using ArcGIS 10. Unfortunatelly the starting system is not predefind by ESRI and thus I´m not sure the software is doing what ...
2
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1answer
80 views

Ok to measure and union a projected-on-the-fly shapefile in ArcMap?

I have a dataframe in arcMap 10.0.4 that is of Africa Albers Equal Area Conic PCS. I bring in a census shapefile of WGS 1984 CS and it is projected on the fly. I do 2 things: I use the calculate ...
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1answer
92 views

Vector Layers are not lining up and are scaled differently

Hey I am a first time user of GIS and I am working for a transportation map of North Carolina for a project at my work. So what I have been doing is first placing the Tiger County Boundary by using ...
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2answers
180 views

Problem with reprojecting raster from MGI 6 to WGS

When I reproject a raster from Mgi 6 to WGS 84 using Warp in Quantum gis it makes mistake ( about 380m). Is there any way to avoid this?
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1answer
138 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 ...
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2answers
435 views

How to convert OSM data to a projected Coordinate system

What is the easiest way to get OSM data into a shapefile projected data format for QGIS? Sounds simple but I've run into problems with this before.
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1answer
410 views

Reproject raster catalog - ArcGIS 9.3/FME 2012

I have a couple of raster catalogs in different file geodatabases and I need to re-project them to a new coordinate system. Now there is no option to project a whole raster catalog, nor can I use the ...
2
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3answers
363 views

Coordinate System (Malaysia RSO Projection) not lining up in QGIS and ArcGIS for Desktop?

I am using QGIS 1.9.0 on Linux Mint; and I am new to (Q)GIS I have three layers (2xshapefiles, 1xopenlayer[Bing Maps]) that I am trying to line up located in peninsular Malaysia. Shapefile_1 is a ...
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1answer
194 views

constant deviation projecting lat lon to itm(israel tranverse mercator

i use two different ways to project lat lon data taken from google earth to ITM (Israel Transverse Mercator) and export the data to arcmap same ways i try to unproject ITM data and export the data to ...
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1answer
81 views

Shapefile CRS damaged. How to bring it back?

I have two shapefiles with same location and extends (EPSG 4326). But one of the shapefiles CRS seems to be damaged after doing a lot wrong with reprojection... its not shown on the same position as ...
4
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2answers
707 views

Cartesian world sized projection WKT/EPSG code?

I am after the EPSG code or Well Known Text (WKT) of a projection that puts the centre of the earth a 0,0,0 and each point is a cartesian XYZ distance from that. My existing data is in WGS84 ...
6
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1answer
105 views

Should I Reproject Data Which Has Been Captured Incorrectly?

I'm working on a project for a client which is migrating data from an Oracle database to an ESRI Geodatabase. When data for this project was initially captured over 15 years ago, the coordinate ...
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3answers
3k views

Geographic Coordinate System to Projected Coordinate System

I am trying to convert a shapefile from GCS to PCS to calculate the area of each polygon. I have tried two different methods: 1) "Data Management Tools->Projections and Transformations->Define ...
2
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1answer
111 views

CRS Austrian Lambert/WGS84

I am totally new to Qgis (or GIS in total): My problem is to get two layers in same CRS to do an intersection and further analysis described in the blog of underdark (Groupstat tutorial). My is the ...
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0answers
70 views

Projection for Tracking a Vehicle

I'm looking for the best coordinate system projection to use for cartesian calculations while a vehicle is running from its starting location to about 100 miles from that spot. The offline format ...
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1answer
82 views

Setting coordinate systems in gvSIG: workflow or transformation issues

I am learning how to use gvSIG 1.10 (Mac OS 10.6.8 Snow Leopard). My goal is to create a simple county map of Illinois using the base data shapefiles available from the Illinois Natural Resources ...
5
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1answer
700 views

Does anyone know the proj4 Coordinte Reference System command line for Rectangular Polyconic Gores?

I am a GIS beginner using QGIS 1.8.0 I am trying to transform a world map from the standard WGS84 Coordinate Projection System to a set of rectangular polyconic gores, with a gore count of 12. ...
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2answers
142 views

QGIS 1.8 on Ubuntu 12.04 doesn't transform CRS properly

I have a weird QGIS-Problem that only occurs in Ubuntu 12.04, but not in Windows 7. I've also tried this on different Ubuntu-Computers. When I try to transform a layer with WGS84 to a different ...
6
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2answers
880 views

Why do my Shapefiles not align correctly?

First: I'll summarize what I understand so far so please confirm or correct me. When On-the-Fly is selected a layer is re-projected from that of the layer's CRS to that of the project CRS, IF ...
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1answer
175 views

How to reproject this vector layer?

I have a dxf file and use this tool to convert it to shapefile. Then I apply some affine transformations and get a shapefile that does not fit the shapefiles downloaded from osm (EPSG:4326). I know ...
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0answers
236 views

Conversion between WGS84 height and local height datum

For x/y or lat/lon or heights between different ellipsoid, we can do conversion by using proj.4. But I found that if I want to convert between WGS84 height and local height, I found that it is not so ...
7
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2answers
2k views

Is there any online tool for converting coordinates between different EPSG?

Every time I want to do conversion, I need to get into the console to run proj.4. Is there any online tools for converting coordinates between different EPSG?
3
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1answer
133 views

What are the highest and lowest precision Coordinate Reference Systems for US East Coast?

And does it matter what system your data layer begins with if you choose the right system for your project? Do some applications use more precise projection systems than others?
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2answers
140 views

Problems with Combining Layers in QGIS

I am trying to add the political boundaries baselayer from http://www.cec.org/Page.asp?PageID=924&ContentID=2336 and then on top add points where I gathered coordinates from Google Earth (using a ...
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0answers
40 views

Map Projection - where to begin [duplicate]

First of all, I realize that this question can be considered like "open" or maybe "too wide" (and definitely very basic for all of you). However, I am completely new in this and I am not looking for ...
0
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1answer
197 views

CRS Conversion problem

My question is quite simple, this is probably why I couldn't find a conclusive answer anywhere. I have two datasets representing the same area in Romania, but in different CRS, A is local, B is WGS ...
2
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1answer
123 views

Determining the transformation between a satellite image and long/lat

I'm trying to overlay some data onto a satellite image of the UK. The image is a hi-resolution version of the image below (originally from dundee university): ...
4
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2answers
449 views

What's the best projection for rasterization of random latitude and longitude data in the northern Atlantic?

I have a dataset in the WGS84 geographic coordinate system that I would like to interpolate along a grid using Python. It appears gdal_grid is not available through the Python bindings, so I plan to ...
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1answer
236 views

Projecting shp from GK3 to UTM32 with BeTa2007

I've experimented with projections of shapes, used the official provided grid beta2007 for germany and noticed differences between transforming by double exporting over custom CRS in QGIS and ...
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2answers
381 views

ESRI State Plane Coordinates as EPSG

I am working with some State Plane projections from Colorado. I have looked them up on spatialreference.org and they are the following: ESRI:102254: NAD 1983 HARN StatePlane Colorado Central FIPS ...
0
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1answer
185 views

How to reproject WSF layer created from GeoJSON?

I have a WFS layer: myVecLayer_disp= new OpenLayers.Layer.Vector("Редактируемый участок",{projection: new OpenLayers.Projection("EPSG:900913")}); And i have feature store: var protocol=new ...
2
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0answers
718 views

Projecting point in Leaflet from EPSG 900913 (same as 3857) to EPSG 2232 with proj4js returning unexpected results

I have a leaflet map from which I want to be able to query an api that accepts x y values in EPSG 2232 as inputs. Leaflet doesn't handle point transformations like Open Layers does so I am trying to ...
0
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1answer
204 views

Why are layers not overlapping to each other inspite of having same CRS? [closed]

I am new to QGIS and working with QGIS 1.7.3 version, I have my all layers in WGS 84 CRS but even though they are not overlapping to each other, What should I do ?
3
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1answer
1k views

Export to new projection in QGIS 1.8

I would like to use QGIS to convert a CSV file from UTM to lat/long. I imported the CSV file with the "Add Delimited Text Layer" plugin. This works fine, the data looks like it is projected properly ...
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1answer
219 views

PROJ.4 custom projection that is Transverse Mercator with Affine post-process

I am trying to define some of my local TMAF grids in PROJ.4 so I can reproject points between the local grid and MGA95 and/or WGS84. For these grids I have the MapInfo CoordSys clause which defines a ...
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0answers
121 views

Converting altitude in feet to pixels on a mercator map image

I know the question might seem farfetched given that the map is 2d. But I essentially want to project items-aircraft-above the map and I would like their altitude to be vaguely 'realistic' in terms of ...
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1answer
919 views

Javascript library for converting MGRS to Lat/Lng

Is there a JS library that converts MGRS to LL? I have found one that converts Lat/Lng to MGRS, but nothing that converts MGRS to Lat/Lng. Someone asked this question in the past, but the answer was ...
0
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1answer
478 views

How to reproject layers (using GeoServer and OpenLayers) in order to overlay on the google maps [duplicate]

Possible Duplicate: Openlayers and Geoserver: OSM/Google Maps and WMS Overlay I am writing a code using OpenLayers. In this code, I want to display different layers in different zoom ...
2
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1answer
960 views

Openlayers Transform not transforming a point from EPSG 27700 to EPSG 4326

I am trying to add Google street view functionality to a Openlayers Map. I have started by using 3 divs to hold the Openlayers Map (which uses a local tilecached base map), a google api map and ...
0
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2answers
233 views

Mercator projection image data

I'm trying to create a map which I can place points on within my application I found some mecator jpg images but in order to accurately place points I need to convert the lat/long to pixels so that ...
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1answer
168 views

Raster on-the-fly projection in ArcGIS has different resolutions

I have a map document authored in ArcMap. The spatial reference for each of the raster layers is Alaska State Plane. If I set the Data Frame projection to Web Mercator (Auxiliary Sphere), then my ...