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

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3
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2answers
1k views

using Python to calculate NDVI, output as a Geotiff

I need a script that can calculate NDVI from two separate input Geotiff files, then output the results as a Geotiff. I wrote following script, most of which is borrowed from various on-line sources ...
0
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1answer
722 views

Extract Longitude and Latitude from Geotiff (ASTER 30m DEM)

my problem is apparently quite simple, but I cannot really find an easy answer: in QGIS I've created a raster layer by merging different GeoTiff images from the ASTER 30m DEM dataset. The merging is ...
0
votes
1answer
149 views

How to add RGBA color map to single band GeoTIFF using GeoTools 2.x?

I am developing a light weight GIS application, and am looking for the simplest way to add an RGBA color map to a single band GeoTIFF using GeoTools 2.x?
1
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0answers
41 views

How do I split a DEM at a certain elevation?

I have a DEM that includes bathymetry and terrain elevation and I would like to split it at the coastline. Ideally, I would end up with one tif that's land and one tif that's bathymetry. I have ...
1
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0answers
222 views

NoData specification via IEEE NaN in GeoTIFF for ArcGIS

I am a programmer exporting 32-bit floating point GeoTIFF rasters from my own application that my users need to read into ArcGIS. Unfortunately I am not an Arc user myself and have zero expertise with ...
2
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0answers
172 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 ...
0
votes
1answer
369 views

How to remove black box around georeferenced grayscale image in QGIS?

i'am trying to georeference a grayscale image (*.tif) in QGIS 2.2.0 Valmeria. It is working but QGIS draws a black box around the georeferenced raster image. If i use the option set 0 transparent, not ...
0
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1answer
248 views

How do I generate a correlogram from a GeoTiff using R?

I'm trying to evaluate the scale of spatial autocorrelation for a bunch of rasters I have as GeoTIFFs. I'd like to be able to do this entirely using R, in order to maintain smooth workflow. What's ...
1
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1answer
424 views

Split Large GeoTIFF to smaller regions with python and gdal

I have quite a large GeoTIFF-file (compressed 50MB but unpacked 6GB) and want to split it into several smaller regional files. Therefor I am using python. As I am a new gdal user I do not really have ...
2
votes
1answer
120 views

Grayscale Tiff Images

I have a gray scale tiff image. I can extract the values from this tiff using numpy and make a new image with blue scale. But how can I convert it to shades of blue instead of shades of gray directly ...
1
vote
3answers
725 views

Topography: How to get the x,y,z coordinates of highest or lowest point/pixel of a raster GIS?

Given a .tiff topographic raster image with mountains and deep sea, I am looking for the x,y,z specifics of the highest or lowest point. The x,y,z values being: altitude (z-coordinate) latitude ...
0
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1answer
138 views

How determine data type of points in geotiff DTM?

I have some DTMs in geotiff files. I need to read them in C# and I've decided to use libtiff for that purpose. After some investigations, I've found that there are tiled tiffs, so I use ReadTile ...
1
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1answer
63 views

Unable to show tiff “parameters”

Why this raster (tiff) does not have any values? Why I am unable to perform: doubleclick -> onechannel pseudocolor -> clafify Both rasters are downloaded from the same site: ...
2
votes
1answer
181 views

File size inflation normal with gdalwarp?

After using gdalwarp to project and align-to-grid (via -tap) a number of rasters I noticed that the output rasters were significantly larger than the original rasters. A fairly thorough web search ...
1
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0answers
115 views

How can I draw features on GeoTIFF in Python?

I have a set of data (coords + value) and want to turn it into a heatmap in GeoTIFF. Should I calculate pixels and set them as array, or there are shortcuts? This is what I do now: driver = ...
0
votes
1answer
48 views

Missing Layer in OpenLayers

When I try to include the "fwp layer" from geoserver 2.4 (Ubuntu 12.4 VServer) into my code it doesn't show up. But the geoserver layer preview (OL) shows the right image. The GeoExplorer preview ...
2
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1answer
196 views

gdal2tiles generates small picture inside 256x256 tile

I've used gdal2tiles for generating tiles in number of different polar projections and always experienced the same problem — strange small picture inside normal 256x256 png with the rest of space ...
0
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1answer
35 views

Adding customised data into geotiff

Not too familiar with the geotiff format and hence would like to raise a query on whether I could embed additional information data into geotiff metadata section? Is the fields type for geotiff ...
2
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1answer
279 views

How to Map Latitude/Longitude to FAA Chart?

How can I map latitude/longitude to an FAA digital chart? Attached is a sample GEOTIFF. More specifically, how can I get a reference points from the digital data? Once I can get reference points, I ...
0
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1answer
229 views

How to get the pixels from a geotiff file in gdal python for a given bbox?

I have a GeoTIFF file in WSG 84 Projection reference (it's a GeoTIFF of SRTM). I can use python & gdal to read the whole lot of data into an array (with ReadAsArray()), but I want to only have a ...
0
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0answers
162 views

Unable to view GeoTiff in GeoServer layer preview

I've loaded a 265 MB world GeoTIFF image (transformed with gdal_translate command) in GeoServer. Everything seems to be ok, but layer preview is blank, although clicking in the map canvas the three ...
4
votes
2answers
3k views

How to convert a .tif with .tfw to a GeoTiff?

I have a tif image file, and a .tfw world file (created from OSM data with Mapertive). How can I (using linux command line) convert that to a GeoTIFF file? (i.e. I want to have one file, not 2). I'm ...
3
votes
1answer
134 views

Re-registering a GEOTIFF in qgis

I'm working on some images taken from a UAV over the course of a year. They are OSGB 1936 projection as is the whole project. Annoyingly they don't quite line up so I am trying to a few of the images ...
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4answers
1k views

Creating Store in GeoServer using ImageMosaic Plugin gives Error?

I am creating a GeoServer 2.4.1 store with GeoTiffs using the Image Mosaic Plugin and I get the following error when pressing the button Could not list layers for this store, an error occurred ...
4
votes
4answers
789 views

How to georeference Tiffs after manipulation in Photoshop?

I am exporting very high-res (7000x7000px) hillshades from ArcMap as tiff files. I am then doing some work in photoshop to the images. How can I easily georeference these tiffs after working on them ...
1
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1answer
415 views

Export map to geotiff?

I try to export my map (layout or data view doesn't really matter) to a georeferenced tiff-file (geotiff). However, this presumably easy task is proving rather difficult to accomplish. I first tried ...
0
votes
1answer
479 views

How to load Georeferenced Scanned Maps in R

I have a geo-referenced scanned Map in GeoTiff format, which I would like to load into R. My intention is to plot some vector data (points and polygons) over this map using maptools package. Is ...
2
votes
3answers
206 views

Geotiff reprojection

I am new for GIS programming. I try to change geotiff coordinate system from epsg 32635 to epsg 4326. I used the following gdal command: gdalwarp -rc -s_srs epsg:32635 -t_srs epsg:4326 -dstnodata 0 ...
1
vote
1answer
98 views

How to create a value-by-alpha map in Java?

Someone has post similar question as mine before : similar question But my objective is slightly different. I have a shape file (.shp) (a country map) I would like to write a piece of java code to ...
0
votes
0answers
179 views

How to make a geo reference image using GeoTool based on a matrix mapped data?

My ultimate objective is to make a geo reference image and make it as a raster layer to overlay the image above my openlayers map. I have a set of geo coordinate data, and each coordinate is assigned ...
1
vote
1answer
129 views

Geoserver GeoTiff Raster Layer Turns Shade Pink (Not Pink Error Tiles) [duplicate]

I have been given some geotiff files, sample of one is here I published these files as an Image Mosaic Layer in Geoserver. All is fine except that all the displayed geotifs, at all zoom levels are a ...
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0answers
44 views

No visual after loading geotiff in Qgis Dufour

I installed the latest version of QGis 2.0 for mapmaking. Before I used the 1.8 version and I had no problems in loading Geotiffs. With the latest version, it loads the same files but it doesn't show ...
2
votes
1answer
79 views

How to remove/disable last row/column of SRTM GeoTIFF in QGIS?

I've started using QGIS yesterday, and one of my main reasons to use it is to apply colormapped SRTM v4 over Google aerial imagery. Everything is working fine, except that SRTM v4 elevation tiles ...
2
votes
3answers
145 views

Using gdal_merge to create a grayscale mosaic

My gdal fu is weak and I need help! ;) I'm creating a mosaic in geotiff from hundreds of ecw. I created a list of all my rasters and used this command: gdal_merge -o c:\temp\output_image.tif -q -v ...
1
vote
1answer
472 views

Is it possible to create MBtiles from a TIF? [closed]

I have a geo-referenced tif (it's really big around 1GB) and I'd like to convert it to mbtiles so I can serve them and view the map. What is the best tool to do this conversion?
1
vote
1answer
223 views

How do I find out the resolution in (centimeters per pixel) of a TIF?

I tried using GDAL and got: # gdalinfo nicholas_map_2.tif Driver: GTiff/GeoTIFF Files: nicholas_map_2.tif nicholas_map_2.tfw Size is 28799, 27875 Coordinate System is: GEOGCS["WGS 84", ...
1
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2answers
81 views

How can i combine the colours of one raster with values from another

I have two Tiffs with data from the same area. One is in colour and when I use the identify shows a 'color index' number (eg. 141), then Color(a,r,g,b)(eg. 255,90,255,0). The other tiff contains a ...
1
vote
1answer
232 views

How to add a DEM Band to an existing 3-band TIFF file using QGIS?

I'm quite new in the GIS business and I do not figure out how to do the following thing: I have two geoTIFF Files, one is a 3+1 bands file (RGB+alpha), the second one is a DEM geoTIFF file containing ...
0
votes
2answers
96 views

Two r.mapcalc calculations return a much bigger raster cell size than the input raster

I tried the following calculations with a GeoTiff sample, having a cell size of 25m: Calculating the togographic exposure (TOPEX) and estimating the mean topographic curvature Both, the resulting ...
1
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1answer
850 views

Convert multiple GeoTIFF to one KMZ

I am using GDAL to convert GeoTIFF to KMZ. I am using the following command: gdal_translate.exe -of KMLSUPEROVERLAY *.tif out.kmz If I have one TIF file in the folder, it works ok. If I have more ...
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2answers
1k views

Cropping Geotiff with gdalwarp

I downloaded a geotiff from the recently published 25m-DEM of the European Union (see: http://courses.neteler.org/eu-dem-new-digital-surface-model-at-25m/). One tile has about 5GB so I would like to ...
1
vote
2answers
3k views

How to convert a Gtiff to ASCII-Grid using QGIS gdal_translate?

Gdal_translate implemented in QGIS is often recommended for converting to Ascii-Grid. My problem is that every output which is generated from my geotiff-raster layer is binary instead of plain-text in ...
6
votes
1answer
1k views

Using Tilestache and Leaflet To Display Rasters In Native Projection

I have a collection of old Idaho state highway maps in GeoTiff format. The projection that these maps have been georeferenced in is a transverse mercator projection, called IDTM83 (Idaho Transverse ...
1
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2answers
345 views

Latitude - Longitude bounds from GeoTIFF info

here's the content of a GSFC-generated GOES TIFF image: GOES 13 Imager frame 66 at UTC 12:45:53.520 day 312 of 2013 Vis pixels : 9061, 22912 lines : 2845, 10152 Vis Lon : 999999,-23.1566 ...
0
votes
1answer
160 views

WMS render geotiff as a small image

My Geoserver 2.2.4 was stop working suddenly so i made a backup of Dir folder and install Geoserver 2.3.5 and replaced workspace folder with new one. Now all shapefiles is rendering correctly but ...
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1answer
78 views

while reading a tiff file filenotfoundexception

I am unable to create File object while instantiate a tiff file using TestData.file function it is giving file not found exception . But the tif file is exist on the same path file exists ...
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0answers
163 views

Touch up tool for rasters?

I was wondering if it were at all possible to manipulate/massage rasters (eg Geotiff) using Qgis plugins or Grass?? By manipulate, I mean manually smooth off interpolation artefacts, blended surface ...
4
votes
1answer
415 views

gdal_translate- why jpg compressed tif is 2 times greater than jpg file?

Using the following two commands yields completely different size files: gdal_translate test.tif -of GTiff -co "COMPRESS=JPEG" -co "JPEG_QUALITY=100" output.tif and gdal_translate test.tif -of JPEG ...
1
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1answer
764 views

GeoReference tiff image into the Google map?

I want to Geo-reference a tiff image contain a Map for a specific region, I need to add this region(image) and Geo-reference it on the Google map, SO I can see on the map for the region I select the ...
1
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1answer
248 views

SetColorInterpretation() for a GeoTiff using GDAL not working

I have a single band image which I would like to copy to a 3 bands of a new image and set the ColorInterpretation to red, green and blue respectively. I have tried two approaches, one using the GTiff ...