Aligning geographic data to a known coordinate system so it can be viewed, queried, and analyzed with other geographic data.
1
vote
2answers
71 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 ...
5
votes
1answer
260 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 ...
5
votes
1answer
206 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 ...
1
vote
1answer
96 views
How to Georeference a tiff with correct coordinate system
I am having difficulty in georeferencing an existing tiff (already has georeference information - but is out of alignment). Using the georeference plug-in I can create the map's GCP in the 4 corners ...
4
votes
0answers
185 views
How can I improve my Georeferencing results?
Background This is my second question related to georeferencing naked raster maps in order to re-visualize them on different coordinate systems and in conjunction with other data layers. The previous ...
3
votes
0answers
143 views
How to use Scale tool when Georeferencing Raster in ArcMap?
I'm georeferencing a bunch of maps in ArcMap 10.0. The Shift and Rotate commands are pretty easy to use, no problems there. But whenever I use the Scale command, the image completely changes ...
3
votes
0answers
274 views
How to reverse-georeference with QGIS?
I have a map with a "strange" projection (it's basically hand-painted, not an exact one). I can easily georeference it in QGIS using the Georeferencer plugin and the Thin Plate Spline transformation ...
2
votes
0answers
131 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
84 views
Install Georeferencer Plug-in QGis 1.7.0 OS X
I'm trying to install the Georeferencer plug-in in QGis 1.7.0 on Mac OS X (10.5.8).
However the plug-in doesn't show up in the list. I have used "enable 3rd parties directory" and I have checked ...
2
votes
0answers
95 views
How to georeference an areal photograph given known coordinates of the four corners and center of the image
First, let me say that I am new to this field. I have an existing image/video viewing application. My primary goal is to implement an efficient method to determine the latitude and longitude of any ...
2
votes
0answers
66 views
Grid perspective tool
I'm not a cartographer, but want to use a map for my project from world atlas book.
I scanned the map, but no matter how carefully it is scanned, it's perspective is slightly distorted and it's ...
2
votes
0answers
162 views
Incorporating known GPS/INS data to automatically produce geo-registered 3D models
I am trying to reconstruct a 3D building model from 2D video frames using an open-source Structure-From-Motion(SFM) software (Bundler). The final reconstructed 3D model will be in Cartesian ...
2
votes
0answers
184 views
GIS “hack”: ways arbitarily assigning coordinate in order to match the raster and vector layer in QGIS
Before I raise my question, I have to admit that I am a total newer on GIS, I don't have much background on GIS. But suddenly I need to take over the GIS job from a GIS specialist who just left the ...
1
vote
0answers
26 views
how to get correct geo reference system for a VMap
I am new to GIS, trying to read the GeoRef System for VMap by using the following code:
OGRSpatialReference *ref = layer->GetSpatialRef();
if( ref )
{
QString georefSystem = ...
1
vote
0answers
39 views
Join .csv file and .shp of georeferenced points
I have georeferenced a map and saved a selection of some points on the map. These points are cities of departure and arrival and I want to join the .shp with a and excel .csv with the information of ...
1
vote
0answers
105 views
Question about geotiffs
My colleague and I are georeferencing a bunch of .tif images. After each image, we'll click "update georeferencing". The resultant .tif files are different between our computers and I'm trying to ...
1
vote
0answers
63 views
GeoTiff.lib: TiePoints only without ModelPixelScale do not get georeferenced in QGis
I have an image that has been georeferenced (geotiff.lib) by more than 3 tie points (x y 0 long lat 0 ...) and added following geotiff keys
GTIFKeySet(gtif, GTModelTypeGeoKey, TYPE_SHORT, 1, ...
1
vote
0answers
55 views
Create 6 band IMG file with GDAL out of two JPG files, one with WorldFile coordinates
I have two JPG files
1 ortomap: http://imageshack.us/photo/my-images/703/ortofoto1.jpg/
with WorldFile:
0.683772574816354
0.000000000000000
0.000000000000000
-0.683739485024190
...
0
votes
0answers
42 views
Why does ArcGIS georeferencing rotate my map?
I'm new to arcgis
I georeferenced an image map but when I turned the auto adjust on my map got rotated..
Any help ?
0
votes
0answers
31 views
Worsened image quality and flase colours after georeferencing
When I georeference a map of vegetationtyps (about 20 colours, each representing a certain vegetation) the quality of the georeferenced map is really bad and the some colours has changed (e.g. black ...
0
votes
0answers
90 views
QGIS WMS didn't show georeferenced tiff
I try to reference image and use them via WMS.
Chouse project CRS to EPSG:900913
Add OpenStreetMap source using gdal wms
<GDAL_WMS>
<Service name="TMS">
...
0
votes
0answers
165 views
Why is “Convert Graphics toe Features” grayed out in a dataframe that has georeferenced layers?
I have brought two graphics, a species range and a heatmap, into a dataframe and georeferenced them using control points. I rectified them and now I want to clip one with the other but I can't get ...
0
votes
0answers
85 views
QGIS Georeferencer Rectification Differences with Windows 2008 Server OS
I have come across something weird which doesn't make any sense to me. I was wondering if anyone has experienced this, or has any idea why this may be happening.
I have a server box with Windows ...
0
votes
0answers
139 views
QGIS Georeferencer and Coordinate Systems
I'm having an issue with Ubuntu and Windows versions of QGIS where the georeferencer does not properly assign the coordinate system to the output raster.
When I assign the output CRS to 'EPSG:900913 ...
