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

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2answers
89 views

Georeferencing Raster+Shape file using different Raster of same region?

In ArcGIS, I inherited a database of points in a raster image of Mars, each point indicates a crater occurrence. These are around 60,000 points, all of them in a shapefile. Both the raster and ...
1
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1answer
62 views

How to get parcel polygons to match up?

I have county-wide parcels that don't match up. They are in the same feature dataset, have same projection etc. Is there a tool to get the borders/parcels to match? One layer of parcels seems to be ...
1
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0answers
63 views

Problem in loading map to Georeferencer in QGIS

I'm trying to load a map to the Georeferencer in QGIS using the approach from http://www.qgistutorials.com/en/docs/georeferencing_basics.html. I try to get the locality coordinates(lat/lon) of the '...
2
votes
1answer
26 views

Importing raster data with known lat/lon to QGIS?

I have a number of raster files with known latitude/longitude of the picture edges. What is the appropriate way to import such pictures in QGIS with correct coordinates? All the options that I can ...
1
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0answers
73 views

QGIS as a pre and post processor for modflow

I want to find out how QGIS can be used as a pre-processor for modflow, i.e delineating the model boundary and boundary conditions etc. exporting to modflow for analysis, viewing and/or mapping the ...
6
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1answer
169 views

Using a geo-referenced image as an overlay to display markers on floorplan

I've created a tool based on the Google overlay tiler. This allows our users to upload a floor plan, adjust the position etc. using Google maps. Nothing fancy. We have a server-side job which creates ...
1
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0answers
28 views

Importing geophysical information to QGIS 2.10 Pisa [closed]

I am using QGIS 2.10 Pisa to georeference geophysical survey information. When I import data I have black pixels around meaningful part of the image which I remove by setting the transparency to ...
3
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2answers
245 views

Ukrainian topographic map: projection and coordinates?

I need some help. I managed to get Ukrainian topographic maps for my project. I'd like to do the georeferencing in QGIS. The problem is that I don't have a clue what projection was used and how to ...
1
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1answer
53 views

Georeferencing DWG files on imagery which is hard to see through (e.g. trees)?

Here I have a few campgrouds that I have for are in DWG files that I am going to georeference them. I have no problem with that however; some of these campgrounds I need to georeference on the imagery ...
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1answer
209 views

Why won't my jpg/png fit to display for georeferencing?

I have a jpg of a scanned map. I can add it to arcmap, and view it fine until I try to assign spatial coordinates. When I use the georeferencing toolbar to "fit to display" to begin the process, the ...
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0answers
46 views

Visio to CAD to GIS, How to geo-reference? [closed]

I have CAD file converted from a MS Visio diagram, representing power line cables. Data source has no spatial reference. I converted into shapefile and now I am trying to georeference the vector ...
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1answer
86 views

Create a World File from bounding box

What is the most pythonic way to create a Word File for a .png image, having only it's bounding box? For example, given the following bounding box: <LatLonBox> <north>30.46370000000000&...
2
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4answers
478 views

How do I eliminate the black border on a georeferenced map layer?

I have geo-referenced several scanned maps. Theses are placed side by side on separate layers in QGIS. They overlay other older maps of the same areas. Georeferencing caused the maps to have black ...
1
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0answers
73 views

QGIS Georeferencer Failing to Compute Transform

I've been using QGIS for quite some time, but have encountered a problem that I can't seem to resolve. I am georeferencing an aerial photograph. I have established ample GCP points. After a fresh ...
0
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1answer
50 views

Shapefile georeferencing

I have digitized the internal of a building's floors using ArcMap 10.2.2 and need to georeference the shapefiles now. The only raster file I have, is a google image file which isn't accurate at all. ...
-1
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1answer
75 views

Some city names not geocoding in CartoDB

I'm trying to geocode by city and country name in CartoDB, and several city names are coming up either false or null. I know that this has previously been an issue with the cities not being included ...
0
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1answer
56 views

Perform Spatial Adjustment or Georefenced using two ArcMaps?

I have DWG files that need to be georefernced to a known coordinate system because they were from AutoCAD that doesnt have projected coordinate system. I have an JPEG file that I extracted from a ...
1
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1answer
46 views

rectifying KML file to match GoogleEarth imagery

Ubuntu 14.04, QGIS 2.12: In QGIS I have a polygon (33 segments) which I have successfully exported to GoogleEarth as a KML file. Due to rectification of GE's image, the polygon doesn't quite line up, ...
5
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1answer
331 views

GeoReference XYZ point cloud

I am looking for help. I have done a little bit of geo-registration of images with QGIS. But now, I have been handed some LIDAR data in PCD format (basically x,y,z), But it is not geo-referenced. I ...
0
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0answers
30 views

Using GDAL to ID a pair of GeoTiff Coordinates

I've got a large library of images with no spatial reference. When I view the GeoTiff properties, I can view a lat/long under a "GPS" heading, but there's no indication of a coordinate system/...
1
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0answers
16 views

what kind of accuracy (rmse) can be expected by georeferencing a scanned image? [duplicate]

I am trying to understand what is the effective accuracy of a georeferenced image and how to attach a standard to the georeferencing process which can be used for future reference. To explain further, ...
1
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1answer
56 views

Georeferenced Image Rending As Black Shape

I'm georeferencing an image in QGIS, it shows up fine on the georeferencer and goes to about the right position on the map where it's supposed to. But as you can see below, the image shows up as a ...
2
votes
1answer
66 views

QGIS Georeferencer returning blank output

I cannot get QGIS's (2.8.2 Wein/Win 7) georeferencer to work for the life of me. I select points, set the CRS, run the function, http://i.imgur.com/lsQUOU3.jpg and the output looks like this. http:...
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0answers
103 views

WGS84 Lon/Lat from pixel x/y in a georeference image

I'm quite a newbie in GIS. I need to compute (without using any existing lib/tool) the longitude & latitude (WGS84) corresponding to the a pixel, inside a (georeferenced) map image. I know: ...
3
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0answers
47 views

Batch Georectifying Imagery

I have a large collection of drone images that aren't georeferenced. I'd like to georectify them by pulling projection and coordinate data from the GeoTiff files, but I'm having difficulty. My ...
1
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0answers
36 views

QGIS Georeferencer - Coordinates Rounding Too Small

I have an image I'm trying to georeference on my map, but am having an issue with the coordinates which are sent to the map from the georeferencer. As you can see below in the image, the yellow boxes ...
1
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1answer
95 views

GeoRef with QGIS from Google Earth

I thought I followed the QGIS geo-reference tutorial in precisely. The following raster (with our overlay) was snapped from GoogleEarthPro (I believe that Google Earth is using EPSG 4326, not ...
4
votes
1answer
82 views

What projection should I georeference this historical map to?

I'm using ArcGIS. I have a historical map from 1884. It has bathymetry information which I would like to compare to modern bathymetry models with as much accuracy as possible. I don't know what ...
3
votes
1answer
105 views

Disparity between QGIS and ArcGIS for Desktop georeference results?

I am georeferencing a static map in JPEG format. I would prefer to use QGIS for a variety of reasons. I've never georeferenced with QGIS before, so I may not have the process quite right. I ...
0
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0answers
38 views

Georeferencing two images at the same time in QGIS

Has anyone ever tried to georeference two images at the same time on QGIS? In my application I don't atually care much about the positioning itself, but in the scale and orientation. Why? I have ...
1
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1answer
69 views

QGIS Georeferencer - Georeferenced Image Issue

I'm trying to georeference an aerial image of a site over it's exact coordinates using WGS 84. The same coordinate reference system is used on the settings. I'm not sure what to do from here, is there ...
4
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2answers
129 views

Are Australian Height Datum and GDA94 applicable to Christmas, Lord Howe, and Norfolk islands?

I've been asked to recommend a mapping coordinate reference frame for use for Australian mapping, which I've said AHD for the vertical component and GDA94 for the the horizontal component. However, I'...
2
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2answers
203 views

Difference between Geoparsing and Georeferencing

Can anyone please tell the difference between Geoparsing and Georeferencing?
2
votes
1answer
98 views

How does ArcMap calculate the default cell size when rectifying a raster?

When rectifying a raster, there is an option to enter a cell size. I was wondering how ArcMap calculates this default cell size, particularly in relation to the raster's resolution.
2
votes
1answer
49 views

Using Openlayers and Georeferencer plugin (with solution) in QGIS?

Let me start by saying that I am total noobie at QGIS, so this might be obvious to everyone else. I spent hours yesterday trying to georeference a map. I needed to georeference it against vegetation ...
1
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0answers
73 views

Importing files from Panoramio to QGIS?

I need to visualize in QGIS the density of photographs taken in seven municipalities of the central Italy: Perugia, Magione, Passignano, Umbertide, Deruta, Corciano, Torgiano. I'm wondering if there ...
0
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1answer
97 views

how do i create OGRSpatialReference from raster file's georeference C++

I want to create .shp file using ogr with georeference based on my raster file, so i create an ogr layer using CreateLayer( "point_out", NULL, wkbPoint, NULL ); i want to set the OGRSpatialReference ...
1
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0answers
43 views

QGIS Georeferencer tool not keeping inserted coordinate values

I'm currently giving a basic training course on QGIS and, on the last class, one of the students stumbled upon a problem I wasn't able to solve - nor can I find a reason for it. We are using QGIS 2.10....
0
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1answer
24 views

Geoserver's mosaic created out of 3 pictures, shows only 1 picture

I am trying to create mosaic in geoserver out of 3 jpg pictures.Every picture is accompanied by appropriate .jgw and prj file. IMG_3293.jgw 0.0300000 0.00000000 0.00000000 -0.0300000 19.80492000 45....
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0answers
66 views

Is it possible to set points without coordinates onto a map?

I have the following Situation: csv-file with 1000 lines of measurements. These measurements were done indoor in a building without GPS. The measurement-system allows to set "markers" at any time. ...
0
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0answers
12 views

Can't put a basemap in its Precise location [duplicate]

I am a total beginner with ArcGIS. ( My software info: ArcGIS Desktop Version 10.1 ) (Windows 8.1 Pro). I want to use a raster as a Basemap for my city, I know the coordinates of my city. my ...
0
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0answers
34 views

Display grid squares (OSGB)

I'm currently trying to georeference an old ordnance survey plan in England that has grid squares on it in Arcmap. I've used other packages in the past where I simply turned on the grid squares and ...
1
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0answers
21 views

How to merge a 4 band tfwx file into one tif for use in Qgis [duplicate]

I have a tfwx file and when I open it in arcmap it is displayed as 4 bands. I would like to use the georeferenced file in qgis since I know nothing about arcmap.
0
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1answer
32 views

Using ArcMap georeferencing link file with in GDAL or another alternative?

I've a lot of georeferencing link files from ArcMap 10 that are like so: 5.693887 17.605231 37.000000 -17.000000 5.896141 5.922077 37.000000 -19.000000 16.877354 5.957769 ...
1
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1answer
131 views

Is it possible to georeference in CartoDB using just UK postal codes?

Is it possible to georeference using just UK postal codes. I have the minimum free account and have had now luck with this. IF so should the postal codes be continuous strings with no gaps and is it ...
0
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1answer
140 views

GeoTiff image not aligned after using gdal_translate and gdalwarp

I don't see what I am doing wrong. The coordinate system was assigned to the GeoTiff using the following gdal_translate command: (Usage: gdal_translate -of GTiff -a_srs EPSG#### -a_ullr upper left ...
0
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1answer
43 views

Get geotiff Transform from point correspondences

I am trying to find a way to get the Geo Transformation (NW corner position, pixel size and rotation) for a given tiff image. I have a tiff which I know is using some coordinate reference system (an ...
2
votes
1answer
163 views

HDF5 and georeferencing?

I'm doing quite heavy processing of Earth Observation data, and it appears that a lot of my workflow can be speeded up by using HDF5 for local storage. I mostly work with large stacks of raster files, ...
0
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0answers
25 views

Dynamically add maps to globalmapper

I've a folder which maps are dynamically added to it and I want to add them to global mapper whenever they are ready, Is there any solution to do that? if no is there any other software like it to do ...
0
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0answers
24 views

How to add coordinates to an image in QGIS? [duplicate]

I use QGIS 2.10. I have a map image without any coordinate or boundary info. I need to convert it to kml file and before this, I need to add specific coordinate info for this map. How can I add ...