A map projection is any method of representing the surface of a sphere or other three-dimensional body on a plane

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835 views

ArcPy 10.1 PointGeometry.projectAs()

I'm trying to reproject an X,Y passed in from an Add-in. So far this works fine: pointGeometry = arcpy.PointGeometry(arcpy.Point(x,y),srIn,False, False) projectedPoint = ...
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149 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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239 views

How to overlay 3 different layers using ArcMap

I have to overlay 3 different layers called "Bacino Isonzo Perimetro", "Bacini Tributari Isonzo", and "Isonzo" in ArcMap. Layers'properties are shown below. BACINO ISONZO PERIMETRO Data Type: File ...
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133 views

adding WMS service to application ArcGIS JS api

I've got map in projection: 4326 (WGS-84) when I try to add WMS layers which is in different projection I always get connection timeout Do you know if I could change WMS projection to set it up ...
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273 views

Adding X,Y data and viewing with existing shape file

Excuse me for a simple question. I have CSV files of X,Y data (in decimal degrees) that I want to add to a map and view with a shapefile of level III ecoregions that I downloaded from the USGS ...
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87 views

OpenLayers doesn't understand Mercator map measured in degrees?

I have access to a map server that takes a bounding box measured in degrees, and returns a map, projected in Web Mercator. I'm having trouble configuring OpenLayers to use a Mercator projection that ...
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217 views

Project tiles from custom imagery in transverse mercator with OpenLayers

I have the following parameters of a custom imagery and I need to set-up a layer in OpenLayers with which I would project the tiles properly from this imagery. TransverseMercator ellipsoidName=WGS84 ...
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314 views

ScaleLine shows NaN for LCC projection

I have used openlayers along with geoserver. My Map is having LCC projection by default, but SRS is EPSG:4042. The problem is that the scaleline shows NaN in meter as well as feet. How can I correct ...
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1k views

How to project geographic coordinates (lat/long) to a cartesian system (albers equal-area)?

I am using this matlab package http://www2.ocgy.ubc.ca/~rich/map.html#examples to project the latitudes,longitudes of my data to a specific projection. For this particular case I am using albers ...
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116 views

How to compute a map-to-screen transformation?

Every projection calculation I have come across dealing with the Lambert Conic projection converts the given Lat & Long to meters. So now the magical question: how on earth do you take the meters ...
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282 views

A WMS layer fails to show at some scales

I am tring to overlay my WMS layer on Google but at a particular scale it doesn't show the data of my layer. What can be the problem? <html xmlns="http://www.w3.org/1999/xhtml"> <head ...
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202 views

On the usage of Proj4Js->tmerc.js

I am using "proj4js & open layers" for my mapping. I got projection & datum (which is based on "Transverse Mercator") of a local plane and this plane is part of a grid which returns ...
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393 views

Conversion From Transverse Mercator To Longitude & Lattitude

I have to transform (7-parameters datum transformation) coordinates from northings & eastings to lattitude & longitude. Following are details of source coordinate system(i.e. northings & ...
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384 views

How do I use Proj4js or other technique to make custom map projections with google.maps.Projection?

I'm using Google's Projection class to try to convert my map projection from the default spherical mercator to something like Lambert Conformal Conic. I was previously adapting the code from this ...
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150 views

How to show an array of 2d points/polygons in Polymaps (Cartesian coordinate system)

I need to display these 2d points/polygons (Cartesian coordinate system) on Polymaps with GeoJson layer. I do not use the other layers. Do I need to convert xy coordinates to the lat lon? If so, how? ...
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546 views

Geoserver tiles mismatch

I tried to get WMS tiles from geoserver like /geoserver/gwc/service/tms/1.0.0/layername@EPSG%3A4326@png/15/19142/9530.png or with another projection ...
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749 views

mixing lon/lat and mercator layers in a MapServer .map file

I have a basic question about my MapServer .map file, which has two layers, each with a different coordinate system, longlat vs. mercator. See my .map file below. If I leave it as shown below, with ...
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414 views

Moving GPS Points with a VB script - Bearing works well but distance is wrong

I am using a script I found online created in 2003 by one of the commentators here. It is a great script and exactly what I have been looking for and I'm very glad to have found it. It simply takes ...
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18 views

Is there a way to get undistorted maps in R (when using the openstreetmap package)?

When I download a large map within R (using the openstreetmap package) and I reproject the map (ideally to +proj=longlat), the map will always turn out distorted, making country labels etc. near the ...
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7 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, ...
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53 views

Feature Points Shapefile missing Spatial Reference Information

I'm working with ArcMap 10 and I have a feature points shapefile from the Florence (Italy) municipality open data (http://opendata.comune.fi.it/statistica_territorio/dataset_0040.html). Each point is ...
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18 views

NetCDF4 Files: Missing Projection & Varying Dimensions (Multiple Files)

All, I hope you can shed some light on issues I've been having regarding NCEP Reanalysis-I netCDF-4 file format: First issue, Projection information is not stored on the downloads I obtained from ...
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24 views

ArcGIS: Projection of State Plane Data to a Web Service?

This maybe a naive question but I can't help any online help so far. So we have some data in Shape files. The data is in NAD_1983_StatePlane_South_Carolina_FIPS_3900_Feet WKID: 102733 Authority: ...
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14 views

Generating Scale Bar for Raster Image Data

My goal is to create a scale bar for a printed map at 1:1,000,000 scale. The input dataset is a Mercator projected geotiff. Using GDAL it is possible to get the spatial reference information and ...
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19 views

Why can I publish a layer in Geoserver using these two different projections?

I have a shapefile with this projection in the .prj file GEOGCS["GCS_WGS_1984", DATUM["D_WGS_1984", SPHEROID["WGS_1984",6378137.0,298.257223563]], PRIMEM["Greenwich",0.0], ...
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27 views

Troubles setting correct projection in SDE

I have to transformate data and change the coordinate system but have troubles to set it correct programmatically. I have: ArcGIS 10.2 / MS SQL-Server 10.0.5520 / sde 10.2.2 My steps: 1) Some ...
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31 views

Equal Area Projection for Indonesia - Standard Parallels

I am trying to do area computation stuff over whole of Indonesia and as such, am using the following projection: http://spatialreference.org/ref/esri/asia-south-albers-equal-area-conic/ To make this ...
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29 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 ...
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25 views

Are there standard math formulas for esoteric map projections (like Dymaxiom)?

I come from graphics programming, I have been mucking about making map apps with more interests in map projections. I have a simple 2D tile map, but I'd like to convert that to some of the more ...
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43 views

Importing spatially referenced geotiff from MicroStation V8i into ArcGIS

I can't figure out how to properly import a geo-referenced raster into ArcGIS from MicroStation. Both the design file and the Arc data frame are in the same projected coordinate system, which is ...
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36 views

Finding gps projection of 3d photo?

I have an aerial photo from Paris and I would like to plot gps paths and 3d surfaces on top of it (using R, python, etc). . The problem I have is converting my gps coordinates to 2d coordinates on ...
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22 views

Escaping the MODIS Swath Projection with GDAL: MOD06_L2: MRT Swath Tool not working

Stackexchange, I am looking at ftp://ladsftp.nascom.nasa.gov/allData/6/MOD06_L2/2012/222/MOD06_L2.A2012222.0800.006.2015062054108.hdf Trying to get the SDS (in WGS84 Projection and as GeoTiff): ...
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43 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, ...
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55 views

Create Envelope based on center point

I see in the Java SDK : https://developers.arcgis.com/java/api-reference/com/esri/core/geometry/Envelope.html they have : Envelope(Point center, double width, double height) Creates an envelope by ...
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30 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 ...
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27 views

ArcGIS Online no spatial reference

My intention is to georeference an image so as to create a Swipe Map in AGOL. First, I add my control points, rectify, then analyze before attempting to share and finally publish in AGOL. The other ...
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21 views

Multiple Satellite Swatch processing for 1 years worth of data

I have a file of several scans per day for one year. I am using the OMINO2 product from the Aura platform. I am tasked with creating an automated process to: 1) Extract the sub-data set within the ...
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8 views

Lots of NaNs in reprojecting LSASAF to WGS84

I have a LSASAF file that has LOFF 1808 COFF 308 LFAC = 13642337 CFAC = 13642337 and the standard Euro dimensions NC = 1701 NL = 651 But when I try to translate the range col=1..1701, lin=1..651 ...
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72 views

How to set raster projection in R

I am new to R and grib files. library(raster) I have a "grd" file in and I am trying to set the coordinates to polar stereographic projection r <- raster("p190001.grd") # class : ...
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47 views

ogr2ogr re-projection produces empty shapefile

I use the following to re-project a shapefile to EPSG 4326 using ogr2ogr: ogr2ogr -s_srs "+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs" -t_srs "+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs" ...
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28 views

Adding IF statement for Batch Projections

How do I add an "if" statement that will: 1) List all .tif files and their projections within the input directory 2) Copy all .tif and .shp files that are of the same projection from the input ...
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84 views

Change SHP Projection to display on Google Map

I'm pretty new to GIS but not to programming, so sorry if this was already asked. I didn't find a solution not sure if I didn't quite understand everything about Projections and so on. I have a GIS ...
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30 views

How can I create a warp mesh to match two close but not identical datasets together?

I have two datasets for Mars. One of them is the Mars Viking color mosaic, the other the Mars Global Surveyor black and white imagery. When I overlay the two datasets, it becomes obvious that the ...
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36 views

Raster displaying in ArcGIS

Can anyone please explain this to me? I need the image to be displayed right in any case as I will be using it in different programs. When I open this raster image in an existing ArcGIS map it ...
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83 views

UTM ED 50 transformation to WGS84

I have a set of navigation shot points (pre 1975) with coordinates that are based on a UTM ED50 zone 33 projection and I need to transform these to WGS84. My procedure has been to load the excel fine ...
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31 views

How to set projection parameters in ArcGIS?

I would like to open .hdf satellite data(FY-3 from China) in ArcGIS, but there is unknown projection info in it. The extent of hdf is : top: 0 right:1383 bottom:-586 left:0 And the projection ...
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29 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 ...
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44 views

Overlay polygons on raster in different projections

I'm overlaying polygons on a raster to get the average value inside the polygon (using SAGA->Shapes-Grid->Add grid values to shapes in the QGIS Processing Toolbox), using a geographic and a ...
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40 views

Project Raster Data Loss - 2 Billion People

I am using the SEDAC/CIESIN raster data for population counts. This data is in WGS1984, and I want to project this data to a Fuller projection. After running through "Project Raster" in ArcMap 10.1, ...
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25 views

Projection issue in gwp-openlayers

We are trying to display wms laying that uses EPSP 4326 using gwt-openlayers. Here is a sample of its url: ...