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

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5
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160 views

can I preserve a fading alpha layer when mosaicing images with gdal?

I am mosaicing some images with gdal and would like to improve the final result by using a fading / gradual alpha layer towards the edge of each image to remove the sharp edges in the middle of the ...
5
votes
0answers
167 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 ...
3
votes
0answers
38 views

Optimizing a large number of small Geotiffs

I have a large number - more than 60 thousand - of relatively small Geotiffs, usually from 2 to 12 Mb. I am currently serving them using Geoserver, but things are quite slow even inside our own ...
3
votes
0answers
284 views

Compression in GeoTiff files with GDAL

I have an output from 3th party program in tif format where gdalinfo gives the following information: Driver: GTiff/GeoTIFF Files: J:\ascend\Lufthavne - ...
2
votes
0answers
32 views

ArcGIS 10.3.1 cannot display TIFF image manipulated with GIMP (graphic software)

I used the graphic software program GIMP to manipulate a geoTIFF image (GIMP cannot handle geoTIFFs, so after manipulating the image in GIMP the geospatial information is lost). When I now try to ...
2
votes
0answers
46 views

QGIS Essen vs Wien discrepency in saving tiff

In QGIS 2.8.4 Wien, when I right click a layer and save the rendered image with the create VRT option enabled, QGIS creates both a .vrt and .tif file. However, when I do that in QGIS 2.14.0 Essen, ...
2
votes
0answers
44 views

Using the alpha channel of a GeoTIFF in Geoserver

I want to publish a map as a WMS using GeoServer. The map consists of several layers each of which is a GeoTIFF containing RGB channels and an alpha channel. The images were edited in Photoshop and ...
2
votes
0answers
104 views

Upload .tif to GeoServer via Node.js

How do I upload a .tif file to my running GeoServer via Node.js? I'd like to upload a GeoTIFF to provide it as a WMS by the GeoServer. The GeoServer is responding with a 405, which I think is right ...
2
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0answers
48 views

What are the geotiff limitations of geotools?

I'm trying to process globcover, which is a .tif file of 374mb. Running the following code: File tiffFile = new File("C:\\Users\\CAA\\Desktop\\test.tif"); GeoTiffReader reader = new ...
2
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0answers
52 views

QGIS poor Geotiff quality after importing?

I keep getting poor image quality after exporting (high DPI) from the map composer in QGIS. The original Geotiff is 254 DPI and has great image quality (smooth lines). After opening in QGIS and ...
2
votes
0answers
78 views

Convert TIFF to GeoTIFF

I have a TIFF created from a pdf using GIMP2. The co-ordinate pairs for the extents are shown in the TIFF. I need to convert this TIFF to a GeoTiff and ultimately to a shpfile. The CRS is known.
2
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0answers
19 views

Vanilla PHP and GeoTIFF: How to know byte address and byte length of a “strip” in an LZW-compressed GeoTiff?

I have a situation where I need to read cell values from a GeoTiff using vanilla PHP, and while I've been successful reading values from an uncompressed TIF (~800MB), I'm having difficulty reading ...
2
votes
0answers
102 views

tfw world file in decimal degrees?

I want to understand how "world files" are created. I found some definitions, like: http://en.wikipedia.org/wiki/World_file which says that the 2 last lines in the file are x and y coordinates of ...
2
votes
0answers
801 views

Merge several images and Export a GeoTiff File

I have approx 500 geo-referenced images that I was hoping to merge into 1 geo-referenced file, and export it as a single geotiff file. To be used in AutoCAD Civil 3D I know I am pushing my luck and ...
2
votes
0answers
197 views

Convert from GeoTiff to SVG

Basically, the title says it all: I have a customer who can only export structured map data as a GeoTiff file. My job is to convert this file into proper SVG. How can this be done? I have googled ...
2
votes
0answers
269 views

How to convert a raster file (*.tif) into a composite geodataset by using Python in ArcGIS 10.2.1

I created geotiff rasters (approximately 6000 rasters) in .tif format by using Matlab Mapping Toolbox. When I examined the properties of the data, I realised that it is 64 bit double type. I need to ...
2
votes
0answers
138 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 ...
2
votes
0answers
173 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 ...
2
votes
0answers
108 views

ArcGIS rectify image with embedded colormap (clr)

When rectifying a georeferenced tif image in ArcMap 10.2 the colormap gets placed into an accompanying .clr file. Is there a way to stop this behaviour and have it embedded into the tif so it is ...
2
votes
0answers
457 views

Decompress a LZW-compressed GeoTIFF

I have a LZW-compressed GeoTIFF file and would like to split it into several smaller regional files and change the format to png. I tried to do the spliting with gdal_translate -srcwin. I only get a ...
2
votes
0answers
124 views

How do I present labels in raster format in ArcMap 9.3?

I'm creating a raster map of a large city in ArcMap 9.3 which will be used in a third party software. My problem is that I need to find a way to include labels of street names in my output. I have a ...
2
votes
0answers
167 views

How to geocorrect in qgis?

I need to fit a utm wgs84 tiff raster to a topomap in the same projection. I use GCP and it invariably fails. The first raster uncorrected rater superimpose well, the "geocorrected" raster is ...
2
votes
0answers
216 views

Overlay Shapefile onto Geotiff

I have a Geotiff map and I want to overlay a Shapefile onto it. Ideally I want to specify a 'nice' style for the polygons e.g. have them opaque (for now all polygons should be the same). I want to ...
2
votes
0answers
478 views

create geotiff from shapefiles

I need to colorized geometries from shapefiles and convert them to raster image (geotiff). I tried to use geotools's VectorToRasterProcess and ImageWorker ("d:\gis\tmp\32 27 25 w4.shp" is path to my ...
2
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0answers
216 views

Problem with geotiff in qgis only in some PCs

Helllo I'm having some weird problem opening a 16bits geotiff with qgis. In my pc it opens and displays perfectly, but in another pc (with the same version of qgis) it displays all wrong the image ...
2
votes
0answers
81 views

Is there a way to link eVis with time manager in QGIS

I have a point vector layer created from way points of a GPS. I then used the eVis plugin to view geotagged photos for each of these point. I also used the time manager plugin to play through the ...
2
votes
0answers
329 views

GeoTiff specs for coordinate transformation definition

I would like to define a GeoTiff coordinate transformation by a set of GCPs only. The intention is to publish the GeoTiff as a coverage in GeoServer. However if I specify tie points only, GeoServer ...
1
vote
0answers
34 views

Efficiently iterating through raster calculations with Rasterio or GDAL

I've got a very slow and round-about way to currently do this, but I struggle with the general concept of using windows in raster calculations and how to apply an affine or geotransformation between ...
1
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0answers
16 views

I can´t open a GeoTiff layer in QGis Lyon

I get a problem. I have been trying to open a Geotiff layer and Qgis turn off automatically. Then a report appear (bellow). I hope someone can help me with it. Dyld Error Message: Symbol not found: ...
1
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0answers
10 views

Export color corrected rasters from a catalog in arcmap

I have several raster in a raster catalog for which I(ve used color correction. I'de like to export each raster as a geotiff with exactly the same resolution and world file than the original geotiff ...
1
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0answers
32 views

Batch Export in Geomedia Tiff->Geotiff

GIS: Geomedia 2015, Q-Gis 2.14 Avaible Data: Raster files (tif) with a seperate saved georeference in Geomedia mdb, Shapefiles with the outline of every tif file. I'm using Geomedia 2015 and have ...
1
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0answers
30 views

Using color matching on two geotiff rasters datasets and exporting geotiffs

I have one geotiff (tiff + tfw file) that serves as a basemap for a global zone. Then, I have several geotiffs, one for each zone of this big orthophotograph (50 zones in total). I would like to ...
1
vote
0answers
49 views

gdal_merge.py is not working with NODATA values

I am trying to merge a couple of GeoTiff files with gdal_merge.py. Example input: In the input data the nodata value is -32678. Hence I tried: gdal_merge.py -n -32678 -o DEM.tif -of GTiff ...
1
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0answers
51 views

Storing non-orthorectified images in GeoTIFF

I'm reading GeoTIFF and GDAL documentations and I'm trying to understand what type of transformations are supported. GeoTIFF documentation says you can use ModelTransformationTag to define a ...
1
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0answers
46 views

Georeferenced Image Overlay and export to new image

I have two Geotiffs (one satellite image, one clipped image). I want to put the clipped image over the satellite image, because it shows flow velocity from this shown glacier (see image below). I ...
1
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0answers
91 views

Write stacks of GeoTIFF image to NetCDF by chunk size

I converted GeoTIFF image stacks to NetCDF file with writing data by Index order (layer by layer) (this was a main solution). The problem is, it writes slowly (for 25 images - 1Gb takes 90 seconds). ...
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0answers
32 views

Theory notions on exporting bufr data in geotiff format

I'm trying to export some bufr data from polar satellites/sensors like DMSP, ASCAT, ATMS etc in geotiff image. When my program rasterizes satellite data (brigthness temperature for example) by ...
1
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0answers
57 views

Origin line in gdalinfo output

I am a novice when it comes to GIS systems and information. But, I am having a real problem trying to wrap my brain around a specific value that gdalinfo puts out. Here is what gdalinfo shows from my ...
1
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0answers
40 views

Create a Geotiff with different colors

I have a geotiff raster image. I have estracted the WritableRaster, the envelope, and the gridsampleDimension I need to create a new geotiff using Geotools. GridCoverageFactory gcf = new ...
1
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0answers
65 views

Using .tif on data layer for Google Maps?

i have three files that i should use for a GIS application: map.aux, map.tfw, map.tif The .tif file is a "layer" that highlights some building over a map. How can i bring this information (and ...
1
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0answers
698 views

Reading, modifying and writing a geotiff with GDAL in python

I'm trying the learn the ropes of Remote Sensing image processing using Python GDAL bindings and numpy. As a first attempt, I'm reading a Landsat8 geotiff file, do a simple manipulation and write the ...
1
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0answers
68 views

Exporting a thematic raster in byte format to use with GUIDOS toolbox

I am trying to export some thematic rasters to use them with GUIDOS Toolbox (specifically the MSPA segmentation functions) - http://forest.jrc.ec.europa.eu/download/software/guidos/ GUIDOS requires ...
1
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0answers
32 views

Importing GeoTiff or IMG formats with Ironpython

McNeel Rhino 5 application is using IronPython 2.7, and this is the application to which I would like to import either a GeoTiff or .img formats. I googled a bit a found a couple of python modules, ...
1
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0answers
47 views

gdal2tiles issues with color scale between tiles

Background: I have a series of about 40 small GeoTIFFs that need to be merged together to make one large image. Each GeoTIFF has 2000 bands. I've tried using both gdal_merge and gdal_retile to pull ...
1
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0answers
42 views

Create compressed GeoTiff in Java

I've got a typical two-dimensional array in Java with values which represent a grid. Rows, columns, coordinate system (latlon), origin and cell size are known. I am able to export this data as ASCII ...
1
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0answers
55 views

Understanding a typical output from a geotiff file

A typical output from geotiflib mey look like this: Geotiff_Information: Version: 1 Key_Revision: 1.0 Tagged_Information: ModelTiepointTag (2,3): 0 0 ...
1
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0answers
60 views

Opening shapefile and Tiff layer Coordinates do not match up

I am new to using QGIS and am having a major problem. I have the UK Ordnance Survey (OS) 1:25000 raster layer in Tiff format open. When I open a shapefile or mapinfo vector layer on top of it the ...
1
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0answers
30 views

Pixel value of Geotiff image on Qgis different pixel value of input image

I have a binary image. I convert this image to GeoTiff image by python funntion: def exportGeotiff(filename, raster, row, col, xResolution, minLon, minLat, yResolution,geoReference): format = ...
1
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0answers
56 views

Help rendering shapefiles (.shp) to TIF with labels

I'm running into some problems here. I've basically copied the script below with minor tweaks from a few other posts here on stackexchange. When I run my code and all I get for output is a TIF that's ...
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0answers
120 views

Saving a TIFF file with band names

Does anyone know if it's possible to add a TIFFTAG when saving a tiff file (I'm using the C/libtiff interface) that will give a name to each band? Some kind of per-band TIFFTAG_IMAGEDESCRIPTION is ...