Tagged Questions

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
votes
2answers
44 views

Georeferencing PDF maps for use in Avenza PDF maps

I have PDF maps like the one below (normally PDF, but JPEG for this) that I would like to be able to georeference to use with PDF maps. I don't have GIS training, but have access to Arcmap 10.1 and ...
4
votes
0answers
25 views

Building a Mosaic Dataset with rasters that are not georeferenced. Whats the workflow?

I have 68 aerial jpegs that I would like to use in a Mosaic Dataset. They have not been georeferenced. My question is in regards to whether I should georeference them and then rectify and save them in ...
2
votes
1answer
14 views

Georeferencing an image to a Progressive JPEG

I am using the Georeferencing tool in ArcGIS 10.2 to georeference a normal JPEG image. I want to produce a georeferenced Progressive JPEG image from that image, but there is no JPEG Progressive ...
0
votes
0answers
24 views

How to do rubbersheeting? [closed]

I did Geo-referencing using a Google earth image of my house but my teacher wants me to do rubber sheeting... First off, is there a difference between Geo-referencing and rubber sheeting? If so, how ...
0
votes
1answer
23 views

How to update raster metadata in postgis

How can I update the raster metadata in postgis? upperleftx | upperlefty | width | height | scalex | scaley | skewx | skewy | srid | numbands ...
0
votes
1answer
9 views

Georeferencing SpecTIR Free Data Sample from IGM and/or GLT files

I have recently downloaded some data from the official SpecTIR website for some personal research interests. The website says that the ZIP file contains information about how to geo-reference the ...
2
votes
1answer
30 views

Meaning of no polygon data available for your selection when using CartoDB to georeference spreadsheet?

I linked my cartodb map to a spreadsheet in Google Docs that has column headings of Name, City, State and Pledge. However, when I try to georeference the spreadsheet, for the cities, I get an error ...
3
votes
2answers
36 views

Generic Grid to Coordinate System

I have been given a large dataset of X,Y positions of animal movements in a generic grid system. It uses 0,0 as an origin and then position units are in feet from origin. I have the geo-referenced ...
2
votes
1answer
41 views

Opening GeoTIFF (georeferenced in ArcGIS for Desktop) in QGIS?

I tried to open a georeferenced geotiff created in ArcGIS for Desktop in QGIS. I could open them but they are not in the right spots. These raster datasets contains .aux .rrd .tfwx .tif.aux.xml ...
1
vote
1answer
34 views

Automatically georectify raw Landsat scenes

I am working with 20 raw Landsat images downloaded from GloVis, in WGS 84 (EPSG 32634) coordinate system. I need to geometrically correct them to S_JTSK (EPSG 5514). Usually, georectification is done ...
6
votes
2answers
169 views

Geo-referencing an old map

I'm trying to georeference this part of an old map of Indochina. . The full extent gives more information: . To do so, I used QGIS and tried to infere the datum, I tried "Unknown datum based on ...
3
votes
1answer
59 views

Generating a GDAL script through the QGIS Georeferencer

For several months, I have been georeferencing files manually using the Georeferencer plugin within QGIS. I am now attempting to automate this process using GDAL. The Georeferencer provides a ...
0
votes
1answer
18 views

CartoDB Two Separate Georeferenced Data Sets in on Table

I have two tables each georeferenced with the same timestamps, can I merge the two and keep the georeferenced data so I have two sets of points but in one table?
0
votes
0answers
24 views

Raster georeferrencing does not open in QGIS?

Windows 7 64 QGIS 2.4.0 I am new with QGIS (3 months). I can not open any more Raster georef I did reinstall QGIS without success with georef
2
votes
0answers
14 views

Georeference with csc file does not work

I'm trying to map data that I uploaded with an csv file. Originally this data set only included the counrty code, e.g. BD, for Bangladesh. I tried to georeference it by admin region and selected the ...
3
votes
1answer
42 views

Is there an image editor that can edit GeoTIFFs without affecting their embedded georeferencing?

I know there are a couple workarounds for this but I was hoping a direct solution exists. I am looking for an image editor (like Photoshop but hopefully free software) which can be used to edit ...
1
vote
1answer
45 views

geoserver world image publishing error (georeferenced by ArcMap)

I want to add store - WorldImage in geoserver 2.5, but I still get this error: "Could not list layers for this store, an error occurred retrieving them: Failed to create reader from ...
0
votes
0answers
30 views

georeference a grid by using a script

I've got an image and a set of coordinates, which represent a grid, that looks similar to this: What I'm looking for is a script, that would transform my image, by using such a grid. Edit: My ...
2
votes
0answers
70 views

How can I get my georeferenced TIF file to rectify?

I have added a TIF file (size 1,433 KB) in ArcGIS 10.2.2 and defined numerous georeferencing points, with the aim of creating a raster file for conversion to polygons. However, on clicking the ...
0
votes
1answer
25 views

Georeference images together

I have taken a number of images from a very large rock overhang that contains ancient paintings. I want to piece the images together to create a single image of the entire rockshelter. Through ARCGIS ...
0
votes
1answer
50 views

Create Georeferenced Raster For JPEG file with Mapnik Python

I am able to use Mapnik generate_image.py to generate image with a BBOX and projection. Also, I have added a python script to generate a JGW file. But to completely georeference the generated image. ...
0
votes
2answers
82 views

Georeferencing window won't open QGIS 2.4

I had the georeferencer window open in QGIS 2.4 while project was running, I accidentally closed the Qgs document with the georeferencing window open (worked absolutely fine till then). When I opened ...
1
vote
0answers
24 views

Distorted exported georeferenced tif from far north

I'm trying to export a tif file for R, to plot my data on top of. I have geo-referenced this tiff file: "background_changed" from "Background". But when i export it, the file is very compressed in ...
2
votes
0answers
41 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 ...
2
votes
0answers
127 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
1answer
117 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 ...
0
votes
1answer
71 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?
3
votes
1answer
75 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
0answers
20 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
vote
0answers
58 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 ...
2
votes
1answer
111 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 ...
0
votes
0answers
56 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 ...
2
votes
1answer
68 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
35 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 ...
2
votes
1answer
137 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 ...
0
votes
1answer
70 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
votes
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
51 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
238 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 ...
0
votes
0answers
40 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
44 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
44 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
23 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 ...
1
vote
1answer
130 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 ...
0
votes
2answers
80 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
45 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
69 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
69 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
1answer
53 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
votes
3answers
95 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 ...