All Questions
423 questions
1
vote
0
answers
36
views
Opening .img file created in Erdas Imagine 2023 in Erdas Imagine 2022
I am having an issue working with a file created in Erdas Imagine 2023 in Erdas Imagine 2022. I ran a tool with the output .img. However, the .img format seems to be different in Erdas 2023 vs Erdas ...
- 11
0
votes
0
answers
93
views
Import ECW file
is it possible to add an ecw file as a data source?
I have the gdal extension installed:
Module Name: ImageI/O-Ext GDAL Coverage Extension
Module ID: gs-gdal
Version: 2.24.2
Component: ...
- 1
0
votes
0
answers
212
views
GDAL with ECW support on Ubuntu
I'm trying to install GDAL with ECW support on Ubuntu 22.04.4, but I'm getting an error I can't figure out after running the "make" command below. This is an extract from the error:
/usr/bin/...
- 1
0
votes
1
answer
271
views
GDAL with ECW support on Windows
I have an 84GB ECW image I'm trying to split into tiles. Can anyone help me figure out how to install the ECW plug in from Hexagon for Windows (https://supportsi.hexagon.com/help/s/article/ERDAS-ECW-...
- 1
0
votes
0
answers
71
views
GeoServer ECW problem
I know this topic have been brought up before, but with different situations.
I have been trying to configure geoserver to serve ecw extensions, following documentation and several other different ...
- 143
0
votes
0
answers
46
views
What data does clustering use from multiple raster files?
I currently have a series of rasters of the same area across different times. The data is categorical: the product of a supervised classification used on LANDSAT data run on ERDAS Imagine. Each ...
- 23
1
vote
1
answer
97
views
Change select color in a raster in QGIS using Serval or Value tool
Is it possible to edit the table view of a raster that you see in the Value tool?
Alternatively
Using Serval, once we have a selection polygon can we choose a specific range of raster values within ...
- 8,298
2
votes
1
answer
109
views
Does QGIS have a functionality similar to Flicker in Erdas Imagine?
I am trying to replace an Erdas Imagine workflow with QGIS and I have got most of it working but can't find a solution for fliker. We have it set to turn an image on and off every few seconds to ...
- 8,298
0
votes
0
answers
34
views
Erdas - Export LUT Instead Of Real Values
I am using Erdas 2022.
I have NDVI index of an imaging, and after creating it, the view shows a LUT which is not the original pixels, which is essentially the automatic stretching of the program.
I ...
- 101
0
votes
0
answers
46
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Excluding 'No Data' Pixels When Counting number of pixels in an AOI with ERDAS IMAGINE
I'm working with Landsat imagery in ERDAS IMAGINE 2014 and have encountered an issue with 'no data' pixels within my Area of Interest (AOI). The AOI includes unwanted 'no data' pixels that are ...
0
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0
answers
72
views
What does the metadata tell you about an image and its sensor?
I'm using a software called ERDAS and my tutor says that the Metadata can be used to detect which sensor your image came from. Is there anything you can tell me that links the metadata to the sensor?
...
0
votes
0
answers
22
views
Merging Subswaths with ERDAS Imagine
Does anyone have experience with merging subswaths of a SLC Sentinel 1 image in ERDAS Imagine? I cannot find the right function for it.
1
vote
0
answers
33
views
Installing libecwj2-3.3 on Mac
I am trying to install libecwj2-3.3 on MacOS 14.0.
I have added all the patches as well from https://sourceforge.net/projects/libecw-legacy/ bu still the installation is failing with below error.
&...
- 11
0
votes
0
answers
326
views
How open ECW Maps in QGIS 3.22
I want to load ECW maps in QGIS 3.22 In ubuntu 22.04
I ran the latest version (master repo) of the code with Qt 5.15 and also tried it by installing it ( QGIS 3.22.4-Białowieża)
In both ways, I can't ...
- 121
1
vote
1
answer
421
views
Transparency band of ECW not working in QGIS
I have loaded an ECW file into QGIS (v3.28.2 and also tried 3.30) and a transparency band is recognised as "Band 4: AllOpacity (Alpha)", however the raster is still displaying a black ...
- 107
1
vote
0
answers
748
views
Clean/Precise script to Install GDAL+ECW drivers in QGIS 3.22.16 and Ubuntu 22.04
This is what I did so far:
This is how I installed ecw drivers and gdal:
#ECW (BORRAR ANTES LA CARPETA /usr/local/hexagon si existía
## Unzip ECW libraries and install. Está en la carpeta public de ...
- 3,494
0
votes
0
answers
79
views
GeoServer becomes overwhelmed
I have using GeoServer 2.22 with default setting and configuration values. I uploaded approximately 100GB of data as ECW files.
When I run the server and display the maps by Arcgis Runtime SDK, it ...
- 65
0
votes
0
answers
111
views
Opening images layer stacked on ArcMap into ERDAS
I noticed that ArcMap can open almost anything but if I do a band combination or a supervised or unsupervised classification on ArcMap I cannot open it on ERDAS.
Is there a way around it?
0
votes
2
answers
312
views
Uploading multiple ECW files to GeoServer
I want to upload large number of ECW files to GeoServer. Do I have to do it one by one, is there a way to upload all ECW files at once?
- 65
1
vote
1
answer
1k
views
Using GDAL to convert .TIFF to .ECW
I'm quite new to GDAL and coding in general. I'm trying to convert a whole bunch of TIFFs to ECW's, but just wanted to test with one to start however I think I might be having problems with syntax. I ...
- 15
0
votes
1
answer
4k
views
Convert ECW to TIFF in ArcGIS Pro
I have been given an ArcGIS Pro file with an ECW. I would like to export that ECW as a TIFF so I can open it on more programs. How do I do this?
- 33
1
vote
4
answers
742
views
Most efficient way to perform rastercalculations with GeoTIFF and/or ErdasImagine files greater than 100gb
I have many GeoTIFFs ranging from 50-300gb and expect I'll have some even larger in the near future. I running a simple subtraction on a pair 77gb 1-band files, but I will also have similar 6-band ...
- 151
1
vote
0
answers
145
views
How to Copy Paste ECW maps together?
I have found previous threads but they are different enough to not be very useful to me.
I have the pages of a reference atlas for a city that were photo scanned and then placed in ECW files.
There ...
- 33
0
votes
1
answer
1k
views
Unsupported compression type in ERDAS imagine Software
Am trying to load a Landsat band but I keep getting the error of unsupported compression type, what might be the problem?
- 3
0
votes
1
answer
273
views
Doing Layer stack in ERDAS Imagine
I am trying to do "Layer Stack" of Landsat 5 Surface Reflectance image in ERDAS Imagine 2015 but every time i get output as black and white image. Though pixels have RGB values but still ...
0
votes
1
answer
76
views
Is it possible to pass GDAL Config Options to GeoServer on startup
GeoServer crushes on request to render big ECW image. Here it was suggested to control the memory that GDAL uses via the GDAL_CACHEMAX env var. Where should I specify this options? Is it
applicable to ...
- 7
6
votes
2
answers
3k
views
Installing QGIS with ECW support on ubuntu 20.04
I know there are similar questions here, but I've tried every answer and every tutorial I could find, and I still can't open ECW with QGIS (and I kind of broke my qgis install? When I try to install ...
1
vote
0
answers
200
views
How can I match the colors between the subset and the original image?
I have test subset using an AOI, and I have unchecked the "Ignore zeros in stats." option in the subset dialogue box. The difference in colors may have been cause by the histogram re-...
0
votes
0
answers
341
views
ECW support on QGIS 3.22, GDAL (Mac OS 11.2.3 Big Sur)
I'm having trouble making virtual raster layers of .ecw files. I can load them into QGIS 3.22 but I can't seem to use buildvrt on them. I wonder why since GDAL warp seems to work on these files if I ...
- 717
0
votes
0
answers
308
views
Creating basemap from ECW file in ArcGIS .Net Runtime
I'm new to ArcGIS Runtime and all the idea of maps.
I have local ECW map files (UTM projected) on my machine, and I'm trying to understand how I use them as basemaps, so I can draw points on them, get ...
- 1
0
votes
0
answers
119
views
How to batch upload ECW files to GeoServer
I have about 10000 ECW files. I want to show them as layers in GeoServer, but I need to upload them one by one. How can I upload them in bulk?
Or how can I publish this 10000 ECW satellite images with ...
2
votes
1
answer
12k
views
Convert TIFF to ECW in QGIS
I intend to convert GeoTIFF file format into ECW file format in QGIS 3 on Windows 10 OS. However, "Save As Layer" doesn't list ECW file format. How to convert GeoTIFF file format into ECW ...
- 23
0
votes
0
answers
543
views
GDAL configuration Geoserver 2.19.2 centos 7.9 tomcat
I have a Centos 7.9 installation with Tomcat 9.0.54 installed with a own service. Now i have created a GeoServer 2.19.2.war and serve it with Tomcat. That works great.
I have installed gdal 2.2.4 with ...
- 1
1
vote
0
answers
50
views
Supervised classification in parts
I have an image from 1990 (res 30m, also clouds) for an area equal 2100km2 and when I performed the supervised classification, the software (ERDAS) confuses the classes that look similar. Is it ...
- 11
1
vote
0
answers
216
views
Using ERDAS Imagine 2020 orthophotos
I am dealing with how to figure it out how to export an orthomosaic from my Agisoft Metashape because when I did the merge chunks there. When you merge there, it doesn't provide what I need because of ...
- 4,139
1
vote
1
answer
2k
views
Opening ECW and EWW files in QGIS
For my project I need to bring ECW and eww files into QGIS (3.10 Coruna). The aerial pictures of the ECW files give no problems and are well georeferenced. However, I cannot open the EWW raster files ...
- 11
0
votes
0
answers
207
views
ECW support for Java development
I'm trying to add support for the ECW file format in a Java application the last few days without any success.
My development env is
OS: Windows 10 (x64)
JDK: openjdk 15
IDE: Eclipse
On my pom I added ...
3
votes
0
answers
44
views
Empirical Line Method (ELM) in ArcGIS Pro [closed]
My images from 2017, 2018, 2019 and 2020 from the same area, recorded in the same time of the year, all look different regarding colour brightness, likely caused by atmospheric circumstances. As I ...
- 41
0
votes
0
answers
416
views
How to convert ECW to PNG with gdal_translate while preserving colors
I am trying to convert some ECW files to PNG using the command gdal_translate test.ecw -of png test.png, but the PNG file comes out grayscale.
How do I produce a colored PNG from an ECW file using ...
1
vote
1
answer
209
views
Is it possible to display a gray color GeoTIFF in ERDAS as it simply occurs in QGIS?
I have several GeoTIFFs (gray color) to be imported in ERDAS, however after googleing I could not find a way to display that color gradient as it occurs in QGIS.
Below the GeoTIFF displayed in QGIS:
...
- 2,131
2
votes
0
answers
118
views
Do PNG files suffer performance for scaled read over ERDAS Imagine (.img) files?
So I have a 20 GB in size Raster Image in .img format. Though I will be examining the code, to find out why, I am AMAZED at how quickly QGIS renders the entire file in a scaled format, and prior to ...
- 21
0
votes
1
answer
273
views
Need pros and cons of performing a GeoTIFF from ERDAS img conversion
I have a 20GB ERDAS IMG file that I need to incorporate into my project.
It's data covers the entire USA, indicating the thickness of satellite sensed tree canopy.
What image format would provide me ...
2
votes
1
answer
554
views
Changing ECW output colour for no input value areas
I am attempting to convert a mosaic geodatabase raster to ECW using FME, but get black image output around the edge where there is no input value.
How do I change this from black?
- 21
0
votes
0
answers
1k
views
2
votes
0
answers
66
views
Solving color correction of LISS IV Multispectral image
I have a LISS IV multispectral images (radiometric resolution of 10 bit per pixel) taken in different months 4 tile in January and 2 tiles taken in February.
While mosaicing, I got a different color ...
- 21
0
votes
0
answers
474
views
Input image does not match with signature file in supervised classification
I have a issue in supervised classification on ERDAS IMAGINE. When ever I performed supervised classification it gives a warning message. It says:
iInput image does not match signature's image ...
0
votes
2
answers
424
views
Image Dodging (color matching algorithm) in ERDAS
I have two LISS 3 images acquired in Feb and March a year apart. I have performed atmospheric correction (haze reduction) for both the images individually before applying the color matching algorithm ...
- 5
1
vote
0
answers
738
views
R can't work with ecw while gdal/qgis does. Ubuntu 20.04 config
I'm an Ubuntu 20.04 user with all configured to use .ecw raster format. I can read these files in QGIS (3.10) and work with them without a problem. This is what I get in console:
$ gdalinfo --...
- 3,494
2
votes
1
answer
400
views
ECW file solution doesn't work in QGIS in the latest ubuntu [closed]
In Ubuntu 18.4 I enrolled in a QGIS course in that course .dem file shows but .ecw can not show so what can be the solution can anybody tell me. QGIS version is 3.10.
0
votes
1
answer
161
views
Differences between imported Landsat-8 images in Erdas Imagine
What is the difference between the images created after importing with USGS Landsat 8 dialog, in particular, the suffixes _msi and _msitir? I understand that they stand for multispectral image and ...
- 3