GeoTIFF is a public domain metadata standard which allows georeferencing information to be embedded within a TIFF file.

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2
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0answers
107 views

geoserver and openlayers select rectangle pixel values

I'm running a geoserver (2.5.x) with 1 raster file (GeoTIFF) as a layer. From my application I can access a single pixel value when clicked (through WMS), but what I'm really interested in is to get a ...
1
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1answer
2k views

Convert PNG to GeoTiff using GDAL

I have a map portion PNG and its associated PRJ file. I want to convert the PNG to a GeoTIFF. I know how to convert a PNG to a GeoTiff if the bounding box is available: gdal_translate -of Gtiff ...
0
votes
0answers
335 views

numeric issue while loading floating point-valued GeoTIFF into PostGIS

I am trying to import a floating point GeoTIFF image into PostGIS (2.1), using the following command: raster2pgsql -s 4326 -I -M -F -C tif_dir/*.tif public.map | psql -U postgres -h localhost -d ...
4
votes
2answers
210 views

Is there a command line tool for converting projection in .prj and GeoTiff to EPSG codes?

Is there a command line tool to convert a shapefile projection in the .prj file into corresponding EPSG code? I know that there is website http://prj2epsg.org/search for doing this online, but I ...
3
votes
1answer
1k 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 ...
0
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0answers
209 views

Find correct SRID

I'm learning PostGIS raster, and importing GeoTiff with raster2pgsql. This command line tool states: -s <srid> Set the raster's SRID. Defaults to 0. If SRID not provided or is 0, ...
1
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2answers
840 views

How can I import tif file in GRASS GIS

While importing TIFF image to GRASS GIS, I get an error: Location PROJ_INFO is: name: Lambert Conformal Conic proj: lcc datum: nad83 a: 6378137.0 es: 0.006694380022900787 lat_1: 36.16666666666666 ...
2
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2answers
298 views

Batch Envi read and write to tif

Is there a way to batch read in ENVI standard image files (they have associated headers) and export them to a GeoTiff ? I have a folder of ~500 images
2
votes
2answers
115 views

Can GDAL fill elevation below a certain value?

I have several GeoTIFFs that I'm working with to create contours using gdal_contour. One of them crashes the utility. gdalinfo tells me that the computed min values for band 1 and 2 are ...
-1
votes
1answer
189 views

What kind of geo information is stored in a GeoTIFF

When given a geotiff, what kind of information is normally stored in it as part of the geo information? Is it the position of the 4 corners? Is it the position of each pixel? Is it a mesh of geo ...
2
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0answers
135 views

How do you create either a geotiff or a .tfw in QGIS using python?

Probably I just don't understand the API documentation, I don't use object oriented programming to its full capability. I do see this has to be done from a composer object in order to automatically ...
1
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1answer
190 views

How can I clip multiple geotiff tiles with a shapefile without greatly increasing their size?

I'm using gdalwarp to clip a number of geotiffs (tiles of a larger map) to a polygon described by a shapefile (which is about the size of the overall map, i.e. much larger than individual tiles) ...
1
vote
1answer
134 views

Exporting whole map from ArcMap to GeoTIFF not just current view? [duplicate]

I like to export my whole map which is composed of both raster and vector data to geotiff (or other raster format) in ArcMap 10.1. If I select file->export, only the current view is exported. I want ...
0
votes
1answer
128 views

Changing Spatial Reference System (SRS) of existing GeoTiff file?

How do I change the Spatial Reference System (SRS) of an existing GeoTiff file? Or more fully, what can I use to convert the meta data for the file to a different SRS?
2
votes
1answer
48 views

Speeding up processing of geotiff background for QGIS?

Originally I had an image as a mrsid file. That was very convenient as it was smaller and fast to pan etc. The down side was that every time I upgraded QGIS I had to go through the ritual of ...
1
vote
3answers
550 views

Read GeoTIFF file with php or javascript

Sorry, I am newbie with GeoTIFF files. I want to create a project that a person can upload a GeoTIFF file and the web application saves the lat/long of the picture into the database, the server side ...
1
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1answer
184 views

Why does the commands listgeo and gdalinfo don't show the same Proj4 Strings?

As the title says, why doesn't the unix tools listgeo and gdalinfo show the same proj4 strings? Check this file: ...
2
votes
1answer
190 views

OS X Preview unable to open GeoTiff due to error 259?

I'm currently working on a GeoTiff writer which writes GeoTiffs to the file system. I can write the GeoTiff, dump it with tiffdump, listgeo and gdalinfo and my own GeoTiff reader can read it with no ...
1
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1answer
89 views

Aerial Imagery Showing in Different Colour while pan/zoom geoserver

I have img/tif files of a small aerial imagery. I published it under ImageMosaic plugin (GDAL plugin installed), but when I pan or zoom the map in OpenLayer preview I am getting different colour for ...
1
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0answers
133 views

UTFGrid from raster source

Is it possible to make utfgrids from a raster source (e.g. GeoTIFF)? I am trying to get utfgrids from a .tif with mapnik.xml and TileStache but it seems not to be working. As a workaround I am ...
0
votes
0answers
71 views

IMG and geoTIFF raster extraction

everyone. I'm very new to GIS technologies. Somehow, i need to extract raster(RGB data) data from geoTIFF and IMG files. What is the fastest way doing it?
1
vote
2answers
427 views

Exporting GeoTIffs from Data Driven Pages for use on a Tablet

I'm a beginner at ArcGIS 10.2 and have encountered a small problem that I couldn't solve by googling. I'm trying to export a set of raster and vector data for use on a tablet. The aim is to find LiDAR ...
1
vote
1answer
334 views

How to extract information from a tiff file

I have a tiff file that I loaded into ArcGIS. It has roads, rivers and other features including the 600m contour for the region. I want to create a file that only shows the 600m contour. How can I do ...
8
votes
2answers
172 views

How can I use data from PDF map?

I have a map over Sweden with plenty of data represented as circles of various sizes. The map is saved as PDF from Illustrator, fully editable. I wonder if there is any way I could get these circles ...
1
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0answers
68 views

Changing the color ramp in arcgis javascript

Using the arcgis javascript api, I am displaying geotiffs. What I want to do is change the color ramp in these images. I've looked through the api and I have not seen anything. Does anyone know where ...
5
votes
0answers
384 views

Save fails on raster object created from NumpyArrayToRaster [closed]

I am trying to save an ESRI grid built from a numpy array and am getting an error I've never seen before: Unhandled Exception: System.IO.FileNotFoundException: Could not load file or assembly ...
1
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0answers
178 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 ...
5
votes
0answers
143 views

GeoServer ImageMosaic PostGIS index update

I use GeoServer where I created an ImageMosaic storage following this manual. When I create new datastore, all *.tif files are indexed into DB (PostgreSQL with PostGIS). How can I create new index in ...
1
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2answers
315 views

How to restore gdalinfo metadata after ImageMagick processing?

I first print out the file info : $gdalinfo crop.origin.tif result: + gdalinfo crop.origin.tif Driver: GTiff/GeoTIFF Files: crop.origin.tif Size is 1920, 1950 Coordinate System is `' Origin = ...
1
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1answer
137 views

Java how to create geotiff from points

I have an array of objects where each object has three fields: lat, lon, and category. It is essentially pixels that have been given a land use category. I cannot figure out how to turn this data into ...
-4
votes
1answer
51 views

How much other information can be learned from this geocoordinate post? [closed]

At 5:30 a.m. CDT there was a post on reddit allegedly from Omegle with geocoordinates of a body of a girl who has been missing 5 months. Here is the imgur link http://i.imgur.com/ppqmbeD.png Here is ...
7
votes
3answers
530 views

Filtering out canopies and buildings from DSM to have a bare earth elevation

Can anyone suggest methods in filtering out trees and buildings from a DSM so as to come up with a reliable DEM? What I have is a grid from a LIDAR data (.tif file, with 1m resolution). I was going ...
0
votes
2answers
263 views

geotiff conversion to coordinate system with gdal

I would like to get the coordinates X Y Z from a geotiff file. I am using the gdal translate for the conversion. Which output format is the more adequate for containing a 3 numpay array X Y Z ?
2
votes
3answers
898 views

Use GDAL command line to copy projections

I have two images, a georeferenced Tiff and a second Tiff without a reference. The second image is a copy of the first, but it lost its reference. Now, I want to copy the reference from the first Tiff ...
1
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0answers
143 views

Error when adding WMS layer in OpenLayers from a geoserver

I try to add wms layer from geoserver: var layer = new OpenLayers.Layer.WMS(name, 'http://'+ self.objSettings.ip + ':' + self.objSettings.port + self.objSettings.wms, { srs: 'EPGS:4326', ...
0
votes
0answers
99 views

analysis of srtm data for gaps

I need to analyse the SRTM DATA (1025 X 1025) of a particular terrain which has gaps or voids. Could anybody suggest a solution to find the percentage of gaps or voids in the SRTM data? I would like ...
5
votes
2answers
1k views

How to read each pixel of each band of a multiband GeoTiff with GeoTools Java

I am new to working with Raster in GeoTools-very experienced in java. My goal is to read in a geotiff that has multiple bands, then create a HashMap for each pixel, where the key is simply the lat/lon ...
5
votes
1answer
986 views

Why the result of a merge of multiple raster is so big?

I try to merge 14 geotiff like this : Each geotiff is about 50Mb. I need a geotiff at the output My workflow : gdalbuildvrt -input_file_list list.txt test.vrt (where my list contains the name ...
3
votes
3answers
641 views

How to get extent out of GeoTiff

How do I get the extent out of the GeoTiff format? I want something like this: Extent(293518.1886150768,5680494.194041155,890338.5054657329,6267530.571271311) AKA the xmin, xmax, ymin, ymax ...
6
votes
2answers
713 views

Multi-page export in *.tiff and other image formats using Export Map?

Is there a way to export multiple maps in *.tiff using "Export Map" and setting Data Driven Pages? Because Data Drive Page work in "Export map" only with PDF.
3
votes
1answer
891 views

How to view a raster in CartoDB?

What is the easiest way to view a raster in CartoDB? From the list of formats that you can upload into CartoDB, I noticed that .tif is available, so I've tried adding a GeoTIFF, but it says that ...
3
votes
2answers
1k views

Convert from img to geotiff

Using gdal translate, would it be possible to convert from IMG to GeoTIFF? We have very little experience with gdal and would really be grateful for some insight.
-3
votes
1answer
522 views

tif tfw to GeoTiff [duplicate]

How do I combine a .tif file with a .tfw file to create a GeoTiff? There are many answers telling me to use gdal, but I have no clue. So can someone provide a step by step example of how to do this ...
2
votes
1answer
101 views

Compressions to support when Implementing GeoTiff Reader?

I'm writing a GeoTiff reader for GeoTrellis for Google Summer of Code. I have read in all tags and geokeys and now I'm working with the decoding process. Currently the Tiff 6.0 spec recommends that ...
1
vote
1answer
251 views

GeoTIFF created using ArcGIS for Desktop not displaying in Google Earth or Photoshop?

I originally had an IMAGINE Land Cover raster file that I opened in ArcMap. I used the Extract Feature from Raster to extract only the Developed class and saved it (still IMAGINE). Then I used the ...
-1
votes
2answers
1k views

.tif and .tfw to GeoTIFF [duplicate]

I have a .tiff and a .tfw file that I want to change into a GeoTIFF. When I try to open the file in ArcMap and ENVI 5.0, it is successful. However, in Google Earth it is not. Is there anyway to ...
2
votes
2answers
120 views

qgis raster style 'no data value' checkbox is ignored - what's a good workaround?

See bug report filed here: http://hub.qgis.org/issues/10236 Note the initial bug report got 'fixed' but that fix introduced this new error, so the issue was reopened a few days ago. Anyway, it ...
1
vote
0answers
111 views

GeoTIFF Mosaic/Crop/Translate in QGIS?

I routinely have to mosaic multiple GeoTIFFs together, extract a rectangular area, and save that area as a JPG with a world file. Typically I've been using commercial software for that (Geographic ...
0
votes
0answers
228 views

gdal read whole geotif band into vector

i have another c++ GDAL question. I try to read alle elevation data out of an GeoTiff file into a c++ vector so that i can get elevation at x,y like this: vector[x][y]. I also like to use this data to ...
0
votes
1answer
205 views

gdal_contour transparent contour as png

I started using the GDAL Library in a c++ project. It is a great library, but I am a bit stuck right now with different aspects of it. What is the best way to use gdal_contour in my c++ programm? ...