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

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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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49 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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ECW support Mac OS X 10.11

I'm not seeing any support for the ECW format in Mac OS X 10.11. Nothing recent in searches here and the latest on kyngchaos is for 10.9 and doesn't do anything for QGIS 2.12.
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Installing 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 ...
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ECW on Mac Osx 10.8 Mountain Lion [duplicate]

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?
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37 views

Reducing size/quality of ECW data for ArcGIS use

ArcGIS freezes when I try to operate it with orthophotos (ECW format). Is there any easy way to reduce the size/quality before opening them? I would like to try exporting them into another format ...
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70 views

The ecw files are not visible in the qgis browser (or qbrowser as executed in console). Is this a bug? Or is there sth i need to setup?

version: 2.4.0-1ubuntu2 I'm following a web tutorial at lynda.com about QGIS. In one of the first videos I see there's this preview of raster files. There's the .dem files and the .ecw files among ...
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348 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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connecting ecw to its projection and grid data in an xml file

I'm new to mapping please go easy on me:) I have a bunch of ecw files with 2 xml file one is a file ending with *.ecw.xml and one with *.ecw.aux.xml I am trying to load the ecw files into ...
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1answer
292 views

Is it possible to import .ecw images into QGIS 2.10 for UBUNTU?

We want to import .ecw images. We have done it using QGIS 2.8 for Windows in the past, but we can't using QGIS 2.10 for UBUNTU. Thanks.
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23 views

open ecw file in mapwindow

I'm very new to mapping. I have a bunch of ecw files and also xml files with their mapping information. I'm trying to load them in mapwindow but am having no success. Can this be done?
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1answer
243 views

Geoserver ecw plugin problem

I am trying to publish some ecw files with geoserver 2.7.2 on ubuntu 15.04 x64. I downloaded gdal plugin, gdal_data and native libraries for image-io 1.1.11 and set environment variables; GDAL_DATA, ...
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1answer
213 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
1k 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: ...
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2answers
699 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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5answers
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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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1answer
708 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 ...
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0answers
119 views

How to import ERDAS ECW in QGIS 2.6 using GDAL 1.11? [duplicate]

I am using Lubuntu 14.10, QGIS 2.6, and Ubuntu GIS(unstable). QGIS was used to use GDAL 1.10, and can import ERDAS ecw format. But after GDAL upgraded to 1.11, QGIS couldn't import ecw images. How to ...
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282 views

How to Install GDAL with ECW Support on Windows

What do I download from http://www.gisinternals.com/stable.php for Win7-32 to cut 1:1M map sheets out of Australia.ecw file in GDA94/Geographic and save them as geotiff in WGS84/Geographic? I would ...
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1answer
518 views

How to convert TIF to ECW with FME maintaining a certain value?

I want to convert TIF to ECW with FME. Some tif-pixels have values of 255/255/255: After conversion these pixels have values of 254/254/254 or 253/254/252 or similar. How can I achieve that ...
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66 views

Enable ECW support in QGIS Server on Windows

I'd like to enable the ECW support on a QGIS Server installed on a Windows computer. I know it's "manualy" deactivated in source code and it seems both Desktop and Server ECW licence can be used on ...
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1answer
585 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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2answers
176 views

ERROR 1: None of ECW_ENCODE_KEY and ECW_ENCODE_COMPANY were provided

I downloaded ERDAS-ECW_JPEG_2000_SDK-5.1.1 and tried to use it with GDAL to create ECW files from georeferenced PNG files, but they are not created, it basically complains about: ERROR 1: None of ...
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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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how to set default scale for ecw in geoserver stores?

I added an ECW that it's default scale is 1:1,000,000 to stores of geoserver, and then went to Layer preview panel and clicked on the link to see the preview of map. But when the preview appears in ...
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277 views

ECW support on ubuntu 14.04 - QGIS 2.8.1

I've followed instructions for lubuntu 14.04 - QGIS 2.2 ( Answer in Unable to install ECW support on lubuntu 14.04 ), adapting to QGIS 2.8.1. No problem to install packets, but result of gdalinfo ...
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1answer
111 views

QGIS reprojecting .ecw file in EPSG:23032

I opened the .ecw file with qgis but I found that the ortophoto is 340 mt northern and 150 mt eastern the topographic map. How can I move the ecw?
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297 views

ECW support for QGIS 2.8 (Wien) and Ubuntu 14.10 (Utopic Unicorn) [duplicate]

Getting QGIS 2.8 (Ubuntu 14.10) ready for ECW files is really a pain. I've no terminal experience and it took me several hours to install the ECW JPEG 2000 SDK 3.3. What I did so far: #download ECW ...
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444 views

Converting .ecw to .jp2

Is there any easy to use software for converting .ecw/.eww files to .jp2/.jpw files without loosing the georeferencing? I don't want to use proprietary file formats with QGIS. EDIT: I've deleted the ...
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163 views

Problem exporting ecw project- arcpy

I work with arcview 10.3. Every time i export maps with ecw raster format , python (version 2.7.8) get crashed and i see: I use this code: import arcpy,os,sys,string import arcpy.mapping from arcpy ...
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932 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
1k 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 ...
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1answer
143 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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276 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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233 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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1answer
648 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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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
2k 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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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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1answer
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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
249 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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2answers
887 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 ...
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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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504 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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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 ...
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3answers
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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 ...
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2answers
922 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
545 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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338 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 ...