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

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4
votes
2answers
117 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, ...
2
votes
2answers
181 views

Difference between Geoparsing and Georeferencing

Can anyone please tell the difference between Geoparsing and Georeferencing?
2
votes
1answer
87 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
35 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
vote
0answers
63 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
votes
1answer
80 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
vote
0answers
42 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 ...
0
votes
1answer
18 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 ...
1
vote
0answers
58 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
votes
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
votes
0answers
33 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
vote
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
votes
1answer
27 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
vote
1answer
91 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
votes
1answer
93 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
votes
1answer
39 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
127 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
votes
0answers
24 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
votes
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 ...
0
votes
0answers
52 views

Georeferencing CAD drawing with 1 control point

I am a newbie in AutoDesk AutoCAD 2015 and have a problem at hand. I have a drawing which has a known Universal Transvers Mercator based control point but for the drawing to be georeferenced in ...
0
votes
0answers
44 views

Referencing a raster by center coordinate

I'm concerned with producing mosaics from UAV thermal IR video frames. I exported several several frames containing the temperature values in a matrix (.csv). From camera specifications and flight ...
1
vote
0answers
25 views

How to load and reference historic mapping

I have recently started working with QGIS having used ArcView for several years. I am unsure of how to go about inserting historical maps which have no referencing data. I think it might be possible ...
2
votes
1answer
55 views

XY coordinates effecient way to copy

I get XY coordinates of point features delivered to me in PDF format, this means that to bring them into ArcGIS I manually have to enter them first into an excel spreadsheet - does anyone know if ...
0
votes
0answers
95 views

Georeferencing google earth historical images

I have been trying to raster and georeferenced an historical set of images from Google Earth but I am experiencing issues after done the first one properly. I save 4 images from Google Earth of the ...
0
votes
0answers
22 views

Using photo for mapping lineations in ArcGIS for Desktop?

I am attempting to map the paths of burrow on an oriented photo in order to generate an xy xy chart to run a lineation analysis. How do I get a photo into ArcGIS, orient it, and trace lines that ...
1
vote
1answer
90 views

Is setting raster CRS in QGIS georeferencer useless? Still have to choose the same for target SRS?

I'm trying to move out of ArcGIS into QGIS permanently for basic operations, so be patient please. Here is the problem. I'm trying to georeference a topo map in EPSG:22523 (Corrego Alegre UTM). I did ...
0
votes
1answer
153 views

How to use Orthoengine in PCI Geomatica to georeference Pleiades 1B TIFF to WGS 84

I am trying to use the orthoengine in PCI Geomatica 2015 to reference an image to WGS 84 (ESPG: 4326). Acquisition mode PX Spectral processing PA+XS (resolution is 70cm) I have the associated RPC ...
0
votes
0answers
58 views

Projecting PDF for use with Avenza

I have many maps in PDF format and would like to georeference them for use with Avenza software on mobiles. I am running 9.2 so no option to create the projection files at export. Looking for an ...
7
votes
3answers
255 views

Creating disease risk map in QGis

I would like to create a risk map using RFE Data and Tiffs but now I realised that I actually have no idea how. I have dowloaded .Tiff(Region), .hdr and .bil(Rainfall/RFE) files from the USGS page, ...
1
vote
0answers
68 views

How to align hundreds of rasters quickly

I'm hoping to accurately align hundreds of aerial images that are slightly off-kilter. The images cover the same area on different dates (several acres). They contain identifiable features around ...
-3
votes
1answer
69 views

jpg conversion to shapefile [closed]

Please, I have a jpg image which I want to work on, but I have a problem with it. I understand that I need a shapefile that is already georeferenced to georeferenced the jpg. Pls, how do I know that a ...
2
votes
0answers
140 views

Multipatch georeferencing

I am currently using ArcGIS Pro to create a 3D campus model and I have floor plans extruded by each individual floor to represent buildings. Another group is working on the modeling side of things and ...
1
vote
1answer
71 views

Capturing coordinates via snap with QGIS

I would like to know if there is a way to get and extract the coordinates of a node (one of the node that conforms a polygon) in order to use these pair of coordinates to georeference a DXF file, ...
1
vote
0answers
67 views

Is it possible to georeference a .hdf file in ArcGIS

Using a Noggin 250 GPR and Smart Cart. I generated data for a grid. I did not have a gps unit on the smart cart. I do have gps x'y for the corners of each grid. After post processing the data in ...
2
votes
1answer
246 views

QGIS: raster image georeference and overlay

I've created a grid and points in QGIS which I used to survey. Using a test image at the moment and I'm trying to fit this image as an overlay within a boundary. When I insert the image it has a white ...
1
vote
1answer
35 views

ArcMap Georefencing - sheet/image problem

I have a problem and I wanted to know if anyone else had experienced this. I think it is some type of bug as it doesn't occur all the time. The problem is when I am georeferencing some 'tiff' images, ...
1
vote
0answers
135 views

How to rectify a georeferenced Google Earth image and corresponding layer

I am still a newbie to georeferencing and ArcGIS. I imported an image with place markers from Google Earth. Then I opened up the image in ArcGIS Desktop 10.3.1. I then georeferenced the control ...
3
votes
0answers
266 views

QGIS : transformation types in geo-referencing

Im a beginner in geomatics. I try some images georeferencing in QGIS. I would like to understand what is happening behind the different transformation types (linear, polynomial, Helmert...). What I ...
4
votes
2answers
215 views

Meaning of GCP in QGIS

Im a geomatics student, During a geo referencing with QGIS, a .Points file is saved. I open it with Notepad++ It is written under this form : mapX,mapY,pixelX,pixelY,enable ...
3
votes
1answer
277 views

Put png map image as a background to draw upon

I have an image of a fiber optics network map: I want to turn this map image (without any actual GIS data) into a vector map where each point is defined by lat, long. To do this, I'm trying to ...
1
vote
1answer
260 views

Import georeferenced dwg-files to SketchUP

I have a georeferenced dwg-file in a national projection and want to import it into SketchUp pro 2015 without loosing the georeference. My workflow so far was to import it into QGIS, check it's ...
1
vote
0answers
93 views

Georeferencing reversal of image

I georeferenced a map and it posted to canvas as a mirror image of the original map. I set my project CRS before starting and also made sure to set the same SRS for the Geotiff being created and ...
0
votes
0answers
57 views

algorithm of v.rectify, v.transform for georeference

Please can anyone tell me what algorithm is used in v.rectify and v.transform to georeference in Grass Gis. Binh grass.osgeo.org/grass70/manuals/addons/v.ply.rectify.html ...
0
votes
0answers
47 views

Grass Gis supports binary_little_endian 1.0?

Basically, I have a 3d point cloud (obtained by visualsfm) and want to convert it into a world coordinates model (unit: mm) by using ground control points. And, I found these addons v.ply.rectify, ...
1
vote
1answer
35 views

Georeferencing a raster on top of 2 or more polygons

I am trying to georeference raster sketch maps that have polygons drawn on them to line up with vector polygons. Its relatively easy to do this using the georeferncing toolbar in arcmap for 1 ...
0
votes
0answers
76 views

QGIS Georeferencer loading very slowly on multi-GB geotiff

I am trying to load a 2GB Geotiff (it's source coordinate system is WGS84) into the georeferencer for QGIS 2.6+. However, once I load the image, I see a blank raster canvas for nearly 10 minutes ...
0
votes
0answers
32 views

Dealing with multiple georeferenced, but possibly slightly offset datasets

I have elevation data stored at 5 meter resolution in a raster file. I would like to go in and add this data into a database (lat, lon, elevation.) I have another rasterfile with other data, also at ...
0
votes
1answer
148 views

Google Earth image projection transformation question

I have taken a JPEG image snapshot of an area on google earth. Within it I marked and record the coordinates of the four corners. I then added and georeferenced the image to a map I was already ...
0
votes
0answers
30 views

Problems in overlaying NWS flood maps on Google maps

Hope you are doing good. My team is trying to overlay NWS flood maps on to Google maps. The steps we are following are as given below. We downloaded the flood maps from NWS in the raster format ...
1
vote
0answers
29 views

QGIS Georeferencer adds padding to image after save

I am attempting to georeference an aerial image using satellite imagery. I'm successful in getting an output, however I notice there is an issue where QGIS's georeferencer is adding padding to all the ...