Aligning geographic data to a known coordinate system so it can be viewed, queried, and analyzed with other geographic data.

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2
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0answers
29 views

Georeferencing declassified CORONA images of coastlines?

I'm trying to georeference declassified CORONA images of coastlines in order to asses coastline changes and human impact. In most case, georeferencing is easy, but since images of coastlines can only ...
0
votes
1answer
455 views

Convert long/lat to indian grid system

how to convert lat/long coordinates to Indian Grid system? I've googled for a couple of days but didnt find the exact algorithm for this. and i got a link Indian Grid System. but i didnt get a picture ...
2
votes
2answers
151 views

display GeoReferencing image through MapServer

I have a tiff image and got the world file which contains the needed information for GeoReferenceing, how to start add this image on Mapserver ? if I use C# and use GMAP API to call the google server ...
4
votes
1answer
308 views

Problem converting georeferenced jpgs to geotiff - image is shifted/warped

I have hundreds of georeferenced jpgs in ArcGIS 10 that I need to convert to geotiffs. I'm trying to use GDAL translate to create geotiffs from them. Everything works great except that the ...
2
votes
0answers
51 views

Best practice for aerial photo stitching and georeferencing

I need to georeference 53 air photos from 1981 (1:25,000 scale) and was wondering what would be the most efficient, defensible, and accurate option. For context, the air photos are following a highway ...
2
votes
2answers
132 views

Batch rectifying 200+ historic aerial images?

I have acquired historic aerial imagery for the surrounding towns, circa 1954, and the images have no georeference. I am looking for software to help me batch-rectify the 200+ images. I have current ...
1
vote
1answer
124 views

How to link 2 different images in eCognition

I'd like to link 2 different images in eCognition to find the same pixels on both images. The images have same projection (geog lat/long). How can I do this? Thank you so much
2
votes
1answer
55 views

How to insert georeferenced PNG into correct location in AutoCAD Map3D?

I have a PNG of building plans that I will need to digitize in AutoCAD Map3D. I have georeferenced the PNG in ArcGIS, which has produced a world file (.pgwx) in the same directory in which the image ...
5
votes
1answer
624 views

Calculating distance in WGS84 (MySQL and Geoserver)

Here is the environment in which I work: An application using geo-referenced data Database MySQL 5.5, storing georeferenced points A Geoserver server, connected to the MySQL database Here is the ...
2
votes
1answer
57 views

How to combine historic OS sheets in order to create density maps of historic streets

I really need some advice on creating historical street maps using GIS software (I have access to QGIS and Diva). Basically, I want to upload a number of historic OS sheets, which I have downloaded ...
0
votes
1answer
57 views

How to upload a series of OS map sheets using QGIS and merge together?

I need to upload historic OS sheets in tiff format, and 'stitch' them together, as some districts are spread over a number of sheets. I have no idea how to do this. Can anyone help?
0
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0answers
13 views

How to avoid random transparent pixels in georeferenced grayscale raster images?

I'm in the process of georeferencing some old black and white aerial pictures from 1990 in QGIS 2.4. So far, this is business as usual, no problems. Of course I get the usual black triangles, because ...
1
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0answers
49 views

Whats an appropriate map projection for georeferencing aerial photos?

I have some aerial photos that were shot from directly overhead a 5x5 mile property. They were then mosaiced to create a continuous overhead tiff of the entire property. I am now going to ...
6
votes
1answer
5k views

Georeferencing a shapefile with ArcGIS 10.1

I have a shapefile with some polygons that I would like to superimpose to a raster image, but unfortunately they don't match perfectly due to the reference system the shp has been created with. So, I ...
0
votes
2answers
81 views

Defining a scale number from the Helmert transformation

I know this is more bit of a cartographic issue, but maybe somebody would be able to help. I have an old map georeferenced to the openstreetmap with 50 identical points. I want to get the scale of the ...
2
votes
1answer
80 views

Cripplingly Slow Performance While Georeferencing in ArcMap 10.1

Just last night I started having an extremely frustrating problem with georeferencing, something that has been integral to my job for a few years now, and something I've never really had a problem ...
5
votes
1answer
416 views

Determining Natural Origin for a GeoTIFF file (Lambert Conic)

I am trying to display an existing GeoTIFF file (from the FAA WAC set) in an application that requires the GeoTIFF NaturalOriginLongitude tag (FalconView 5.1.1). There are some older files in that set ...
5
votes
5answers
7k views

Trouble when georeferencing CAD files in ArcMap

I've definitely got at least a couple of grey hairs while trying to convert some dwg. files to shapefiles. I've seen that this subject has been disscused a lot, but hope someone will have the ...
0
votes
0answers
55 views

Is it possible to georeference a shapefile? [duplicate]

I need to align a polyline shapefile with a pre-existing one. This new one has a couple of edits, but for some reason shows up in a different location (I believe the person who made this edit did so ...
1
vote
1answer
109 views

How to exactly georeference in QGIS

When I georeference a raster image in QGIS, it's always a bit displaced as in the attached image (the cyan polygon is the template, the red border is the georeferenced image), although I try to set ...
2
votes
1answer
42 views

Georeferencing CAD Causing Close Out/Shut Down of ArcMap?

I am currently running ArcGIS 10.2.2 for Desktop. I have no other georeferencing issues regarding TIFFs shapefiles, or otherwise. However, when I introduce a CAD (or DWG) file into the map and ...
1
vote
0answers
29 views

automated method of Geo-referencing air photos?

I am trying to figure out a way to automate a process to geo-reference ~800 air photos, followed by digitalizing several thousand polygons from these air photos. At a minimum, we would like to create ...
1
vote
2answers
48 views

Cannot See Georeferencer Results

I am working in QGIS 1.8.0 Lisbosa. Currently I am trying to georeference a building blueprint in a .TIF format to a Google Streets layer. After selecting four points (the corners of the building), I ...
2
votes
1answer
125 views

How to find the projection of an image?

Instead of georeferencing the image and deforming it, I'm trying to find the projection used by the author of the image. I've got tens of these distribution maps to digitize. The idea is to avoid ...
2
votes
2answers
186 views

What is causing this distortion in QGIS georeferencer results?

When importing a JPG map using QGIS's georeferencer plugin, the resulting map layer is distorted and does not look anything like the map that I am trying to import. I can't work out what is causing ...
0
votes
1answer
60 views

Georeferencing image using QGIS?

I am very new at this and when I georeference an image in qgis, I get the same image georeference but rotate and elongated. I use 3 control points to georeference the image but whatever I do, I get ...
0
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0answers
16 views

How can I Georeference a column of multiple zip codes? [duplicate]

I'm looking for a way to easily visualize a collection of zip codes. I work for a chapter-based organization, and the chapter boundaries are based on zip codes. I'd love to use CartoDB to display the ...
0
votes
1answer
32 views

Process to georeference corners of vector file?

I am new to QGIS and trying to wrap my arms around it so please bear with me. I have vector files (DXF) that I need to add back in the georeferencing. They were edited with Illustrator so I loose ...
7
votes
1answer
169 views

Batch Georeferencing in ArcMap 10.2

I have about 50 pdf maps that I would like to batch georeference and/or georectify. I've saved one as a jpg and georeferenced it manually and would like to automate the rest which are in the same ...
1
vote
1answer
42 views

Georeferencing Image using saved Link Table from another Image?

I had a scanned map that I did did a georeferenced a few weeks ago and saved the link table. Now I have two more scanned map that need to do the same thing. It is the same area and one of them I did ...
0
votes
0answers
37 views

qgis's georeferencer renders my white map with a translucent blue tint, can I prevent this?

I'm running QGIS 2.0.1-Dufour on MacOSX and when loading a PNG or TIFF into qgis as a raster its always getting rendered with a blue tint. Here's what it looks like before being loaded into QGis's ...
0
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0answers
32 views

Georeferencing Tools in ArcGIS Engine 10.1

I'm new with ArcGIS or even GIS it self. My question might be a newbie question but I need help on building a Georeferencing tool set like the one in available ArcMap. I found that it is not available ...
1
vote
1answer
102 views

Worsened image quality and false colours after georeferencing

When I georeference a map of vegetation types (about 20 colours, each representing a certain vegetation) the quality of the georeferenced map is really bad and some colours have changed (e.g. black ...
0
votes
1answer
123 views

How to remove black box around georeferenced grayscale image in QGIS?

i'am trying to georeference a grayscale image (*.tif) in QGIS 2.2.0 Valmeria. It is working but QGIS draws a black box around the georeferenced raster image. If i use the option set 0 transparent, not ...
0
votes
0answers
34 views

Suggested Workflow for Generating NITF (w/headers) using Nitro in Python

It seems that there is no real suggested workflow for generating an NITF file from a georeferenced, validated tiff image. Here are my inputs: Pyramid Tiff Image - georeferenced MBR (minimum ...
0
votes
0answers
21 views

Vectorized a historical soil map advice

I received a PDF file of a soil map in the Middle Rio Grande Valley near Albuquerque, New Mexico however it is dated in 1914. I was able to split the north and south because it came in one map and ...
0
votes
2answers
63 views

How to find the coordinate system of an existing Map in arcGIS using VB.NET [closed]

I already have a georeferenced base map loaded in ArcMap. I want to find the spatial reference of this map and assign the same coordinate system to a polygon that I created. I can not get a start with ...
2
votes
0answers
38 views

How to preserve GCP's after gdalwarp

I'm trying to figure out how I can preserve my GCP's after a gdalwarp. I need the georeferenced GCP's data, so I can calculate the Root Mean Squared Error. Is there a way to preserve this data, and ...
0
votes
1answer
51 views

How to overlay a jpg onto a google earth image?

I have produced a model from an online engine , and it is in a google earth picture. I want to georeference the below picture and apply the boundaries here on my google earth image. I'm using QGIS2.2. ...
0
votes
1answer
53 views

Georeferencing CAD Files and Creating Geodatabase

I'm hoping this is an easy question to answer. I have georefrenced a CAD data set to an orthophoto that was projected in NAD 83, and turned it into a GDB. Even though the GDB is not projected, is ...
0
votes
2answers
339 views

georeference IMG file in qgis

I have a problem: I'm trying to georeference a satellite image (ASTER, Erdas Imagine file *.img) in QGis. I have georeferenced with QGis before and never had any problems. The file is georeferenced ...
0
votes
3answers
56 views

Add locations individually in map view to existing table rows?

(Edited for clarity, sorry!) I have a table in which many records have long/lat info, but many others do not. In other words the locations for those records are currently unknown. Therefore there ...
1
vote
1answer
32 views

Does Collada allow to georeference the 3D coordinates within a DAE file?

Can I assign lat/long/height values to each vertice of a Collada 3D model?
0
votes
1answer
84 views

How to upload a list of 5-digit zip codes to CartoDB?

I'm playing around with the free version of CartoDB right now. Trying to upload both a CSV and excel document with a list of 5-digit zip codes. I have received a "there was a problem georeferencing ...
0
votes
1answer
63 views

How to choose a coordinate reference system

I have a jpeg image of a reserve's layout and would like to use it to plot animals movements on i.e. GPS points. I have no idea which coordinate reference system to choose during the "georeferencing" ...
0
votes
2answers
71 views

Geo- referencing Projected coordinated raster with GCS - ArcGIS

I have raster displaying Lat/ Long grid, but map information shows that, it s been mapped in Gauss Krugger projetion/ Beijing 1954. So, technically we need to geo reference the map in Gauss Krugger/ ...
0
votes
1answer
52 views

georeferencing an image from GoogleEarth

What I actually want to do is very simple, however, there seems to be a bug: I have an image from GE which I want to georeference and set as a background layer. I thus set some placemarks on GE, ...
1
vote
1answer
53 views

Can I define a transformation between 2D and 3D in Geotools?

I'm using Geotools, and I need to convert coordinates between 2D and 3D coordinate reference systems. I recognize that there's no universally-correct way to do this: 2D -> 3D means "making up" a Z ...
0
votes
1answer
55 views

How to georeference a map - which is in projected coordinate system - using geographic lat long? [duplicate]

We have some hard copy maps which were projected in Gauss Kruger coordinate system (in the legend it has been mentioned). But, the coordinates were given in Geographic lat long (Beijing 1954). In ...
2
votes
3answers
369 views

How to batch-process georeferencing of rasters (prelude to animation)?

I have many (10k) raster files, all with identical size and pixel dimensions, which need to be georeferenced. I would like to georeference one of them manually, using either QGIS or GRASS, and then ...