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

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GDAL WARP conversion problem with orthographic file ECW [on hold]

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 ...
2
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36 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
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1answer
75 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 ...
3
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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 ...
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1answer
43 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 ...
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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 ...
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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. ...
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2answers
119 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) : ...
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2answers
92 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 ...
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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?
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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. ...
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124 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 ...
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1answer
894 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 ...
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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 ...
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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 ...
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1answer
507 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... ...
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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 ...
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3answers
165 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 ...
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1answer
503 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?
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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 ...
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0answers
89 views

ERDAS Imagine ecw compression settings

We have some jp2 or img satellite images that we compress to .ecw using ERDAS Imagine. We have realized that with some images we are losing too much information while doing that. What i wanted to ask ...
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64 views

Raster format similar to ECW

I need an alternative to the ECW format that we currently have for a new series of Ordnance Survey maps. The ECW format looks clearer and less pixelated than the new maps in Tif format (in QGIS). ...
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221 views

ECW files to geoserver 2.4

I'm trying to add .ecw files (20 orthophotos) to geoserver 2.4. Geoserver is running on an ubuntu 12.4. Vserver. I'v already installed the GDAL plugin. Is this the right format for the ...
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2answers
237 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 ...
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4answers
198 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 ...
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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 ...
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3answers
809 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 ...
2
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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 ...
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2answers
306 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?
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1answer
425 views

Using ECW with mapserver

I know that mapserver drop the support for ecw due to licensing issues. But if i understand well, as mapserver rely on GDAL, if GDAL support ECW, mapserver can serve ECW data. So I've compiled ...
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145 views

Is ERDAS 2011 or ArcGIS 10.1 best to use when mosaicking 100's of ECW image files?

I have to perform hundreds of imagery files and they are in ECW files. They are 1 ft resolution and are in quarter quad and came from BLM but they are product by NGA. I wonder which software is the ...
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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 ...
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0answers
152 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 ...
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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 ...
6
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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: ...
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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': ...
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0answers
122 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
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2answers
506 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 ...
5
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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 ?
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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 ...
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0answers
192 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 ...
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0answers
148 views

Assign spatial reference for 1000 different ECW raster datasets using 1000 different *.prj files through python programming or .net

I am having 2000 ECW raster datasets without spatial reference and also I have 2000 *.prj files in another folder. I know only the way as right click on raster datasets-->properties-->Spatial ...
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1answer
314 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 ...
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1answer
630 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 ...
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2answers
946 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 ...
4
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0answers
643 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 ...
1
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1answer
730 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 ...
2
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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 ...
4
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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 ...
0
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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 ...