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

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1answer
159 views

Georeference multiple raster layers of same area at once or identically

I have many raster layers that I need to georeference to my existing vector layers. Data types vary between 8 bit unsigned, 32 bit float, and bit 64 float. All have the exact same extent, cell size, ...
2
votes
1answer
102 views

Georeferencing uneven/irregularly gridded rasters

I'm trying to take a set of NetCDFs and turn them into georeferenced datasets using GDAL. However, the only Geospatial data is a set of 2-D lat/lon arrays. The projection type is not lat/lon. THe ...
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0answers
88 views

Create tiles for on Google Maps from PNG images

I have some PNG images in 2048, 4096, 8192 and 16384 pixel size to generate tiles for zoom level 3,4,5 and 6. My data are plotted in Mercator projection and centered over a particular area of clat ...
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1answer
47 views

QGIS and arcmap compatibility in image georeferencing

I have georeferenced an image in QGIS but when I imported it to arcmap 10.0 it saying "In consistent extent". Any one know how to solve it?
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1answer
282 views

Georeferencing a CAD file and converting to SHP in ArcGIS without distance distortion

i have a land parcels dwg file in an unknown co-ordinate system and i want to georeference the file in ArcMAp and convert it to shapefile but the problem is that whenever i georef the cad drawings ...
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0answers
71 views

Georeferenced PDF is checked but doesn't georeference [closed]

I have checked the georeference option for my exported PDF but when I import it into Avenza PDF Maps it says it is not georeferenced. I have had this work for other maps but a new map I opened will ...
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1answer
74 views

Write single lon/lat coordinates in TIFF with GDAL

Is there a way to write the georeferentiation value by value in a tiff file using GDAL?
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0answers
25 views

Loading ordnance survey raster ArcMap [duplicate]

I have connected to the correct folder on ArcCatalog. Only the .tif files show on my ArcCatalog tree, but the .tlw files are in that folder too. How do I create a raster layer with this data? I ...
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1answer
73 views

libLAS georeference las file and update header

I am just starting to use libLAS and I had a small issue. I have next code to generate a las file with georeferenced points: std::ofstream ofs; liblas::Header header; liblas::SpatialReference srs; ...
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0answers
244 views

Import in Google Earth Pro Geotiff from a Geostationary satellite

I'm litterally having a nightmare with geostationary image. I would map this geotiff https://drive.google.com/file/d/0B5L9hPViqpFNdVdaYklodzBkamc/view?usp=sharing on Google Earth. What i get is this: ...
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1answer
176 views

How to georeference TIFFs with coordinates from txt file using ArcGIS for Desktop?

I have a folder with TIFFs and an accompanying .txt file containing coordinates in this format (sample): # IMGE LN ID Time Easting Northing Height Phi ...
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0answers
28 views

Can a raster be projected twice?

I have to georeference a raster (tiff) twice. That is due to the limitation of control points I have. The first georeferencing works perfectly. The problem comes when I georeference the raster for the ...
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1answer
36 views

Why does raster's cell size change due to rotate and georeference using Georeference toolbar?

I just found out that the cell size of raster change after I rotate or georeference it with Georeference. Is there any explanation why it works that way?
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2answers
75 views

translate GRIB product on bounding box

I'm in troubles with the projection of a GRIB product. I have a Cloud mask image and I want georeferencing it with GDAL. I need to pass through gdal_translate before, since i need to fix the bounding ...
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0answers
84 views

Geotransformation, from sat coordinates to Earth coordiantes

I'm using this code: https://github.com/mcidasv/mcidasv/blob/master/ucar/unidata/geoloc/projection/sat/GEOSTransform.java to retrieve longitude and latitude in Earth system from column, line ...
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0answers
46 views

pixel coordinates to lon,lat

I'm trying to convert pixel coords of a tiff file in longitude and latitude ones. The image is from a grib product of a geostationary satellite and i want georeferencing it. I'm reading this doc ...
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2answers
138 views

Aligning shapefile to satellite imagery

I have a line shapefile in ArcGIS 10.1 (road shapefile) in WGS datum but they are not exactly placed as in the Satellite image. Is there a way to adjust all those lines to places on Arial image?
1
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1answer
89 views

Edit an old georeference raster projection in QGIS

I have created a map from a picture. And now I have some more detailed pictures and georeferenced them. Is there any way to quickly access them later on. I mean everything is fine with ...
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0answers
118 views

Four parameter Helmert transformation using four points

I'm looking for an algorithm to calculate a Helmert transformation using four reference points. Plus, does anyone know how I can calculate the error once I've completed the transformation?
3
votes
3answers
689 views

How to georeference a map in UTM / WGS 84 (geographic) to WGS84 / UTM?

I have scanned UTM WGS 84 toposheets, with a geographic grid. I want to georeference them in WGS 84 / UTM (therefore with UTM coordinates). Should I: Calculate the UTM coordinates from the ...
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0answers
110 views

Georeferencing using corner coordinate

I have thousands of tiff files with meta file containing corner coordinates. All images coordinates are different as they represent different locations. How can I georeference all these files using ...
1
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1answer
109 views

Georeferencing las files using liblas

I am trying to write georeferencing information to a '.las' file using liblas and c++. Here is my code: ofstream ofs; ofs.open("test.las", ios::out | ios::binary); liblas::Header header; ...
8
votes
1answer
426 views

How to georeference LAS files?

First of all, I am a newbie in GIS. I have a lidar point cloud with GPS and telemetry data associated. Then, I transform coordinates of every point to an ECEF coordinate system and finally I ...
2
votes
1answer
102 views

Overlaying two raster images with no spatial reference

I have two images (X-Ray and Neutron Tomography Scan) of a human bone fragment. I want to use ArcGIS 10.2 to accurately overlay (geo-reference) these two images which have no spatial coordinates. any ...
2
votes
2answers
63 views

Georeferencing a map image with no precise projection info

I am trying to georeference a map that has meridians and parallels etc. but no projected grid displayed. I can get the coordinates of the meridians/parallels fine, so georeferencing should not be an ...
1
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1answer
158 views

Different origin between GDAL/Python and ArcMap of a Modis image

I have a Modis image and i load this image in Python using gdal library from osgeo import gdal, ogr INPUT_raster_1 = "C:\\myimage_1km.tif" ds_1 = gdal.Open(INPUT_raster_1, gdal.GA_ReadOnly) ...
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0answers
30 views

Batch Georeferencing in arcGIS 10.1.2 [duplicate]

I work for a government utility company. Our maps are broken down into 500x500 square meter grids. We have scanned images (TIFF) of these maps that we need to overlay and digize. The maps and the ...
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0answers
50 views

Max length for WKT name

First of all, sorry if this is obvious or stupid questions. I am not very familiar with geographic information system. My question is, is there max length limitation on WKT name? see the bold text ...
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1answer
48 views

Geo referencing RADARSAT-1 image

I have lots of RADARSAT-1 file in GeoTiff format along with meta data where corner coordinates are available. Corner coordinates are for image portion(except the black portion). But, radar image has ...
5
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0answers
256 views

Why is QGIS georeferencer much faster on Windows than Mac?

I just went from temporarily using a Windows 7 machine with 4GB of RAM and no video card as far as I know. I'm now using a mac with 16GB of ram, etc. Its a much more powerful machine. However, QGis's ...
1
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1answer
56 views

georeferenced raster coordinates

In QGIS 1.8 I have two rasters derived from the same multi-band tif image (1) ndvi - each pixel contains NDVI values. Using /Plugin/Analysis Point Sampling tool a new vector layer is created and the ...
1
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1answer
670 views

How to display a .jpg file in ArcMap for georeferencing? [duplicate]

I'm struggling to georeference a .jpg map. When I load it in to ArcMap, I cannot see the picture at all, so I cannot georeference it. (I tried to zoom to the map layer but the map just does not ...
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0answers
99 views

Georeferencing multispectral data using ArcGIS Desktop?

I often have to georeference Landsat data image to map (often raw data without geometric corrections). The way I am doing this is to open up one channel and set my GCPs and save them into a txt file. ...
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0answers
67 views

How to create a floor plan KML file from a DXF in QGIS? [duplicate]

I import a building floor plan from DXF format to QGIS. When I export it to KML format and then import it in Google Earth, how can I put the floor plan to my desire building location? MY CRS is WSG84 ...
5
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0answers
119 views

How do I open MOD17A3 in ENVI such that it is properly georeferenced?

I am using ENVI 5.1 on Windows 8. I am trying to open a MOD17A3 (MODIS Net Primary Productivity standard product - L4) .hdf file which I downloaded from the USGS website. I am still a beginner at ...
0
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1answer
666 views

Overlay single, non georeferenced image in Leaflet?

I'm wondering whether it would be possible to somehow overlay a 3rd party, changing non-georeferenced image such as: If the image was static, I'd use mapwarper.net. But it's not. So is there a way ...
3
votes
1answer
142 views

Unknown Spatial Reference after Georeferencing in ArcMap

I am trying to georeference an image base on another *.tif, after rectifying i still have my Image as unknown spatial reference. Does somebody know how I can fix it?
3
votes
1answer
212 views

Correct georeferenced LiDAR data

Often I obtain LIDAR data for concept studies and conventional survey (in dxf format) over a small portion of this. The LIDAR typically covers the broader area and is used for broader studies, ...
0
votes
1answer
81 views

How can we extract feature for automation method using ERDAS Imagine 2013 software?

I have Quickbird Satellite data, hence I want to extraction from Building foot prints using automation method. Could you give whether its possible or not? If possible how can we use ERDAS Imagine ...
0
votes
1answer
147 views

opening a georefrenced image in IDL in ENVI

I am working with idl in envi,I want to use ENVI_CONVERT_FILE_COORDINATES in case of finding pixel value of specified point,for this porpuse I have lat and long data of my point but I need to open ...
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1answer
88 views

Do rasters other than “north up” exist in the wild?

"North-up" (as I understand it) refers to raster images stored with the northerly direction at top, and each subsequent line of pixels is a bit farther southward. Rasters' georeferencing metadata ...
0
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1answer
50 views

Assign world file to many tiff obtained using a grid/reticulate [closed]

I've many .tiff exported on the base of a grid/reticulate, and now I need to make them georeferenced. There is an automatic method that allow this using the coordinates of the vertexes provided from ...
2
votes
1answer
419 views

How to keep georeferencing from ArcGIS when importing raster into QGIS?

I tried searching for the answer to this, but I didn't see anything, so here it goes: I have previously georeferenced some .png raster images in ArcGIS 10.2.2, and could like to import them into ...
1
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0answers
18 views

Georeference Plug-in not Opening in QGIS? [duplicate]

for some reason georeference plug in will not open. I click on it and nothing happens. I have never had any issues with it before. I have also just installed version 2.6.0 to see if that solves issue ...
3
votes
1answer
27 views

Control points display location changes with scale

I'm trying to georeference an image by choosing points from Map (imported from Google hybrid) however the resulting tif is in no way located similar to the points (in fact the control points don't ...
1
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1answer
96 views

What are Control Points and Monuments used for in GIS?

I've done some preliminary research, looking up definitions for these terms, but I would like an explanation of what the application of a Control Point or Monument is for the average GIS? I am still ...
2
votes
2answers
2k 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 Avenza PDF maps. I don't have GIS training, but have access to Arcmap ...
4
votes
1answer
220 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
56 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
1answer
91 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 ...