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
20 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 ...
0
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0answers
16 views

Georeference by Zipcode failed for 7 of 133 zips

I am georeferencing/geocoding a 133 record table with CartoDB. 7 of the 133 failed to georeference, i.e. I got null in the geometry column. I checked for spaces, i's & l's instead of 1's, o's ...
1
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0answers
34 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 ...
-1
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0answers
45 views

Creating shapefile from georeferenced image?

I have a jpg image and a list of ground control points, I am looking to programmatically create an associated shapefile in python.
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1answer
25 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
21 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 ...
3
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2answers
404 views

Georeference vector linework

I'm new to GIS and a lot of searching didn't answer my specific question so far, so I hope someone can help me here. What I want to do is creating a small web application to visualize election ...
5
votes
1answer
764 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 ...
1
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1answer
32 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
12 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: ...
1
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1answer
178 views

How to link 2 different images in eCognition

I'd like to link 2 different images in eCognition to find the same pixels on both images. The images have same projection (geog lat/long). How can I do this? Thank you so much
1
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1answer
12 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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0answers
19 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 ...
1
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2answers
28 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 ...
1
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0answers
27 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 ...
1
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1answer
16 views

Slovenian Municipalities - right spelling

I'm working on Slovenian Municipalities. Matching them with georeferencing only hits around 80 pct. I have then tried MunicipalityId, but it doesn't work at all. Where can I get the list of names on ...
0
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1answer
18 views

Georeferencing using Liblas error

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; ...
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0answers
23 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 ...
1
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2answers
49 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?
2
votes
2answers
198 views

Batch rectifying 200+ historic aerial images?

I have acquired historic aerial imagery for the surrounding towns, circa 1954, and the images have no georeference. I am looking for software to help me batch-rectify the 200+ images. I have current ...
1
vote
1answer
17 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 ...
3
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3answers
96 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 ...
3
votes
1answer
73 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, ...
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0answers
27 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?
2
votes
1answer
2k views

Convert X Y Pixels to Easting Northing

I'm trying to find out what the formula would be to convert the X, Y of an image to the Easting and Northing coordinates. I've downloaded some of the raster maps from OS UK web site and I'm looking ...
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0answers
35 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 ...
0
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1answer
28 views

CartoDB only georeferences half of my table

I imported a CSV file into CartoDB, with over a million points, all with a clear (and correct) latitude and longitude. For many of the collected data points the georeference column says ‘null’, while ...
8
votes
1answer
101 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 ...
6
votes
1answer
491 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 ...
2
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1answer
43 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
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2answers
36 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 ...
0
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0answers
29 views

aster georeference proplem

i have 2 dems raster layers and i want to georeferencer the first dem raster layer with the another(second) dem raster layer,because the first dem raster layer has wrong coordinates and the second dem ...
1
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1answer
82 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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2answers
137 views

Georeferencer plugin will not load in QGIS

I have downloaded and installed QGIS. I would like to georeference an image using the core georeference plugin. When loading it no toolbar appears and the 'update', 'reinstall' etc boxes in plugin ...
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0answers
13 views

QGis crash when open georeferencer generated image

I'm trying to georeference an image with the georeferencer, QGis creates the geotiff, I can open in other image viewers but when I try to open in QGis it crashes. A friend tested in arcgis and it ...
0
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0answers
29 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
26 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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0answers
34 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. ...
1
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0answers
16 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 ...
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0answers
21 views

GOES 13 EAST How to Georeferencing

I have a many image for Georeferencing, Goes 13 EAST this is metadata: GOES 13 Imager frame 78 at UTC 14:45:22.485 day 009 of 2015 Vis pixels : 4009, 24840 lines : 2621, 13440 Vis Lon : ...
4
votes
0answers
51 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 ...
1
vote
1answer
42 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
vote
1answer
93 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 ...
2
votes
1answer
177 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
1answer
271 views

What method should I use to accurately georeference a geographic map?

I'm writing an application that allows the user to sample points and perform georeferencing In order to test it I have a large scanned map (16k x 13k) pixels covering the area 31 north to 34 north ...
5
votes
6answers
5k views

How to georeference a dxf?

I have got myself a dxf which is built with units in the wrong scale. How do I upscale that in QGIS? Note it does open in QGIS, just in the wrong map units and location.
2
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0answers
84 views

Using ST_Affine() and trans_param() functions on vector layer

After reading this post How to georeference a vector layer with control points? I decided to give it a try to move/rotation/scale a polygon using Postgis. I have two polygons, polygon_from and ...
10
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7answers
6k views

How to georeference a vector layer with control points?

I have a non-georeferenced vector layer that I need to be georeferenced. With raster layers the task is easy and straightforward, but I have no idea what should I do with my vector layer. I have a few ...
5
votes
2answers
756 views

QGIS affine - form of equation

I am at the mercy of a govt authority who have provided utility information in a cad format with a 0,0 origin and a nonsense grid. About a dozen files, the grid and origin are entirely arbitrary. To ...
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0answers
64 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 ...