ECW (Enhanced Compression Wavelet) is a proprietary wavelet compression image format optimized for aerial and satellite imagery.

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12
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2answers
3k views

GeoServer: Best way to publish 2500 TIFF or 71 ECW files?

I have ortophotos of an area that I need to serve as a background map for my vectors. I got it as 2500 files (71,5MB each) in raw TIFF format with corresponding TFW word file - 180GB of data. ...
6
votes
2answers
1k views

Best way to clip a large raster ECW file ?

I am trying to clip a large ECW (details below) but the raster file is too big to be processed entirely. Some details of the ECW below Driver: ECW/ERDAS Compressed Wavelets (SDK 5.0) file size: ...
6
votes
3answers
168 views

How do I display a raster “Background Value” as hollow for more than one set of RGB values?

I have two overlapping .ecw layers of the same area, though one is clipped in the middle, with a white edge. When I set the background value to 255,255,255, and define it as hollow, it only hollows ...
5
votes
3answers
826 views

What format and settings to use for aerials photos in QGIS?

Following question which was more about handling Aerials with ArcGIS: Most Effective Format to Manage Aerial Photography for Viewing Only It seems there are 2 major options for storing / resampling ...
5
votes
2answers
3k views

How to add *.ecw files to QGIS 2.0 on Windows?

How do I add and view *.ecw raster images in Qgis 2.0 ?
5
votes
1answer
617 views

What are the benefits of RGBI Geotiffs vs ECW format?

I just received a batch of imagery for my project area in 2 formats: Geotiff (RGBI) and ECW. The imagery looks very similar and covers the same footprint, but the file size difference is massive: ...
5
votes
3answers
1k views

Mosaicing many large ECW files for display in ArcGIS Server apps

I have about 200 ECW files of recently acquired 1-foot resolution aerial photos. Its about 15GB worth, covering over 250 sq. miles. Unfortunately, you need a license from ER Mapper that runs about ...
4
votes
1answer
497 views

How to import ECW into my postgis database with raster2pgsql (windows)

I'm working on windows 7 64 bits, postgis 2.01. I have to import ECW files into my postgis database. Unfortunatly, my postgis seems to has been compiled without gdal ecw support.When i do a ...
4
votes
0answers
644 views

Why is GDAL ECW compression much poorer than ECW compression from ERDAS

We use ECW compressor shipped with ERDAS Imagine to export Orthoimagery for our different departments. Because we are facing problems with the Imagine license server, we had to choose GDAL (built with ...
3
votes
1answer
565 views

ECW/MrSid plugin for GDAL from Kyngchaos not working on Mountain Lion?

Subject says it all. I have installed all of Kyngchaos packages, but gdalinfo --formats does not list ECW or MrSid formats. Could someone else with Mountain Lion try if they can get any JP2 driver ...
3
votes
1answer
40 views

Geoserver 2.6 with ECW support

Did read "Geoserver 2.1.1 with ECW support" but when I look at the link - http://docs.geoserver.org/stable/en/user/data/raster/gdal.html, it refers MSVC installation and other vague Window binary ...
2
votes
3answers
101 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 ...
2
votes
3answers
1k views

How to publish ECW images to ArcGIS Server?

When I am going to publish mxd (containging image.ecw) to ArcGIS Server, the following error appears: Confiquration image.ecw. MapServer can not be started. Server Object instance creation ...
2
votes
2answers
121 views

Adding ECW file to MXD with ArcPy?

I'm using Desktop 10.2 and I tried ,with this script, to add ecw file to mxd's but the result is a black & white raster(stretched symbology) instead of colored raster(RGB composite symbology) : ...
2
votes
1answer
656 views

Following previous instructions to set up adding ecw files to QGIS does not work

I have followed the solutions to setting up ECW in QGIS. However, none of them work. In addition I get a mount - access denied error when trying to load the gdal-ecw and gdal-mrsid plug-ins using ...
2
votes
1answer
78 views

Convert from ecw to jpg

I am trying to converta batch of ecw aerial photos to jpg in arcmap using the ( Raster to other format) but each time it converts 4 or 5 images and then fails and show this message. i tried to ...
2
votes
1answer
157 views

Trying to build GDAL with ECW SDK 5.0 on Windows

I'm using Visual Studio 2010 to open and build the GDAL 1.10 source (using the "makegdal10.sln"). This builds without an issue. Now I want to include the ECW support by including the ECW v5.0 SDK ...
2
votes
0answers
48 views

How to install QGIS with ECW support on Mac?

I bought a imac recently and I tried to install qgis: without success! It is not possible to read the raster files. I installed GDAL ECW plugin, but it is necessary to copy and paste another file ...
2
votes
0answers
76 views

QGIS crashes when trying to open ecw files

I added Ubuntugis unstable repo and installed Qgis, libgdal-ecw-src, libecwj2-3.3 but still does not work. When I attempt to open an ecw file with Qgis it crashes and tells me: 'std::length_error': ...
1
vote
1answer
2k views

ECW on Mac Osx 10.8 Mountain Lion

I'm having some problems with GdalTools on QGIS 1.8, with MacOsx 10.8: I've the GDAL complete library 1.9 but ECW is still a not supported format. What should I do? Thanks
1
vote
2answers
95 views

merging ecw images

Is anyone able to recommend a program/process/method for merging ecw images together. I have approximately 2000 ecw images (tile) that 1.5x1.5km each which together and put to combine them all ...
1
vote
1answer
175 views

ecw file with mapserver

I have a problem with ecw file. I'm using mapserver and openlayers. I have a ecw file and I make my tileindex file with gdaltindex. I want to put in my map file, I tried many ways but no ones work. ...
1
vote
1answer
908 views

How to change GDAL version in QGIS to get ECW import to work

I’ve previously been successful in importing ecw into QGIS 2.0 but the same methods (for example How to add *.ecw files to QGIS 2.0 on Windows?) have failed with a fresh install of QGIS 2.2 with ...
1
vote
2answers
239 views

Why do I get a gdal_translate error when creating ecw from tif

I have python 2.7 and the latest gdal 32bit core with also GDAL-1.10.1.win32-py2.7.msi and the ecw plugin on windows xp. I have checked that the ecw plugin works by checking the installed formats with ...
1
vote
2answers
508 views

Error .ecw is not a supported raster data source

I am a user from Spain and a I have recently installed QGIS 2.0 in my computer which has Ubuntu 13.04 and when I try to use an .ecw file it says: Error, .ecw is not a supported raster data source. I ...
1
vote
1answer
315 views

Qgis crash when I attempt to open ECW raster format.

I added Ubuntugis unstable repo and installed Qgis, libgdal-ecw-src, libecwj2-3.3 but still do not work. When I attempt to open an ecw file with Qgis it crash and tells me that there are problems ...
1
vote
1answer
732 views

How do I combine many ECW files in MapInfo?

I have MapInfo 11.5.0.16 (I don't have ArcGIS) and I am trying to combine (in some sense) a large collection of ECW files. I can load one ECW at a time in MapInfo but I have very many. MapInfo ...
1
vote
1answer
44 views

Enabling Erdas ECW files in gdal

I want to enable read support from Erdas ECW files in gdal on windows. I have GDAL binaries from http://www.gisinternals.com/sdk/ and i also have a self compiled version. when compiling myself I ...
1
vote
1answer
29 views

How do you extract the data behind a raster histogram

Bit of a newbie, so this may be a daft question. I have an .ecw picture - it is has no CRS, as it is a picture taken at ground level with an NIR camera. It was originally converted from a RAW image. ...
1
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0answers
125 views

Problems installing libgdal-ecw package

I have problems to visualize ecw files for qgis 2.3.0 using ubuntu 12.04 LTS. From terminal, following the instructions for qgis 1.8 found at ECW for QGIS 1.8 in Ubuntu 12.04, because launching the ...
1
vote
1answer
508 views

OSGeo4W error - The procedure entry point … NCSEcw.dll

There are a few posts with a simular error but none with this particular dll. When I try to run a gdal executable from the command line or try to open the OSGeo4W shell I get the following error... ...
1
vote
1answer
508 views

How do I add and view *.ecw raster images in QGIS 2.2.0 on Ubuntu 14.04 LTS

How do I make ECW files work in Quantum GIS on my Ubuntu 14.04?
1
vote
5answers
1k views

Unable to install ECW support on lubuntu 14.04

I try unsuccessfully to install the ECW support (mainly to use ECW file in QGIS 2.2). We attempt to follow and adapt the howto provided by makina-corpus. My first supprise was the repository ...
1
vote
0answers
130 views

Uninstall ERDAS ECW/JP2 SDK Version 5.0 (Ubuntu)

I am using Ubuntu Linux as main OS when it comes to geoprocessing but I am not yet an expert using it. I recently needed QGIS to have ECW support, so I followed the instructions of Luke in the ...
1
vote
0answers
155 views

Trying to build GDAL's ECW plugin in 64 bit Linux

I'm trying to build the GDAL's ECW plugin in Linux. I'm using the latest version of the SDK from Intergraph's site (5.0). It fails because it tries to compile against the 32 bit version of the ...
1
vote
0answers
162 views

Ecw not supported with qgis-mapserv-fcgi but supported in QGIS Desktop - resolved

I have problem with qgis-mapserver version 2 and ECW. Qgis Desktop works well with ECW (gdal support for ecw with the library ERDAS_ECWJP2_SDK-5.0) but not qgis-mapserver (not supported file in ...
1
vote
0answers
124 views

Error: basic_string::_S_create, (trying to use .ecw files)

I have a problem, after resolving my problem with: .ecw is not a supported data file. I am in a new one. When I try to load an .ecw file in QGIS it says: basic_string::_S_create
1
vote
0answers
285 views

Does qgis_mapserv.fcgi segfault because ECW data is used?

I've compiled qgis from source, and when I call qgis_mapserv.fcgi in my browser with REQUEST=GetProjectSettings (and my map file set via map=) is returns the XML correctly. But if I then try to ...
1
vote
0answers
193 views

How to add new raster store and publish for ECW fromat in GeoServer 2.4-RC2?

I am using GeoServer 2.4 RC2 and Tomcat7 on windows xp OS. I have extracted the gdal-data.zip (2.4.0) and geoserver-2.4-SNAPSHOT-gdal-plugin into Tomcat 7.0\webapps\geoserver\WEB-INF\lib. Now ...
0
votes
4answers
199 views

Best tutorials on raster data formats and raster manipulation [closed]

I am looking to improve my understanding of raster formats and how to manipulate them. I don´t really want to go into the mathematics of it, but really want to know the differences between the ...
0
votes
2answers
313 views

Can QGIS2 / GDAL convert to .ECW without corruption?

I have qgis 2.0.1 and it can read *.ecw files that I download. However, when I convert say a *.jpg or *.tiff to *.ecw the output is corrupt. Has anyone seen this problem?
0
votes
1answer
94 views

Are there another way/tool as GDAL/ERDAS-API to convert a raster to ECW?

I am looking for a tool to convert raster (TIF, JPG) to ECW. I found this two year old question/answer How to convert orthophotomap to .ecw file? The answer is to use GDAL with an ERDAS SDK. I checked ...
0
votes
2answers
955 views

Save Google maps as ecw or tiff

I've downloaded this Google Maps XML: http://ttmaps.free.fr/files/google_maps_20.xml I can load it in QGIS, for example, and view it as a raster. I want to save an small area (a town) in an ecw or ...
0
votes
1answer
1k views

ecw on windows 7 qgis 1.8 [duplicate]

I used 1.7.4 qgis release on Windows 7, by which it was possible to manage ECWfiles; after passing to 1.8 release, I couldn't deal with an ECW file: it tells me that .ecw is not a supported kind of ...
0
votes
1answer
27 views

Which format is more convenient to publish in Erdas Apollo?

I am from Bolivia and I need to publish some Satellite images in Erdas Apollo. My question is Which format is more convenient for publish in this software?, because I have Landsat5 TM images in TIFF ...
0
votes
1answer
635 views

Geoserver with ECW image file

I am trying to show ECW ortophoto as base layer in openlayers. So i found this thread on GIS SE: Geoserver 2.1.1 with ECW (v3.3) support 1. Download Geoserver 2.1.1 from ...
0
votes
0answers
21 views

GDAL WARP conversion problem with orthographic file ECW [closed]

i try to convert a ecw file in geotiff then i would like to import it in tilemill. But the orthographic image is smaller (!) than thoe original. my command gdalwarp -s_srs EPSG:3948 -t_srs EPSG:3857 ...
0
votes
1answer
42 views

Enable ecw QGIS 2.4 on Linux Mint 16

I upgraded to Mint 16 and QGIS 2.4 and unable to get ecw to work following various guides available. Anyone willing to explain how to and why it is so hard. I run it on a windows machine out of the ...
0
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0answers
20 views

Gamma correcting ECW

we would like to modify an existing ECW file with a gamma correction in order to make the image less colourful. Is there a way to do this using e.g. GDAL?
0
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0answers
40 views

Problem zooming in on ECW files in QGIS

I opened a 490mb ecw image in QGIS on my mac (using the ecw 1.10.1 GDAL-ECW plug-in & 5.1.1. ERDAS Image Compression SDK read-only for desktop). The ecw is loaded in less than a second, but it ...