Unrecognized function 'enviwrite' though Image Processing Toolbox Hyperspectral Imaging Library add-on is installed

I've installed the Image Processing Toolbox Hyperspectral Imaging Library add-on version 23.10, (I already have Image Processing toolbox installed) in matlab version R2023a, and when I try to run enviwrite, I got: «Unrecognized function or variable 'enviwrite'». In turn enviinfo does run (but I belive is not from the same package). My OS is Linux Mint 21.1 Vera 64-bit. Why is this happening? Can anyone help me? Thank you.

EDIT: The same is happening with the ONLINE example:

[Star Strider]

First, run this from a script or your Command Window:

which enviwrite -all

'enviwrite' not found.

Since it is also a problem with MATLAB Onlline (and here as well, apparently, although there is a link to the enviwrite documentation), that would appear to rule out a problem with your installation.

Please Contact Support and then post back here with MathWorks’ response. Include the URL of this thread in your message to MathWorks so that you do not have the repeat or describe all of this.

[Pedro]

Hi Star Strider,

Thank you for reaching out.

I've run which enviwrite -all, and the result was «enviwrite' not found». So you suggest me to contact the matlab support team reporting this 'incident'?

[Star Strider]

Yes!

MathWorks needs to know the problem exists in order to solve it, and we need to know the solution.

The URL here is: https://www.mathworks.com/matlabcentral/answers/1986609-unrecognized-function-enviwrite-though-image-processing-toolbox-hyperspectral-imaging-library-add

.

[Pedro]

I've already sent a message to the them reporting this incident/bug. thank you

Answer 1

[Abhishek Tripathi]

At present, the Hyperspectral Imaging Library add-on is not supported in MATLAB Online. Kindly download the support package and execute it within your installed MATLAB environment. If the problem persists, please inform us, and we will investigate further to assist you

download our Image Processing Toolbox™ Hyperspectral Imaging Library MATLAB®

For more info. see the documentation here

[Pedro]

Dear Tripathi,

If you take time to read my OP you will see that issue is related to Image Processing Toolbox™ Hyperspectral Imaging Library MATLAB add-on not working in the desktop/laptop and not online.

Thank you for the reply, though.

Answer 2

[Abhishek Tripathi]

Hi Pedro

"Enviinfo is also included in this library. We have tested it on our Windows and linux (Debian 11) machine and it is functioning properly. Based on the error message, it seems that 'hypercube' is also an unrecognized function. There could be two possible issues.

Firstly, the library may not have been installed correctly. Can you manually locate the downloaded library? The 'hypercube' and 'enviinfo' files should be found in the following path: \MATLAB\SupportPackages\R2023a\toolbox\images\supportpackages\hyperspectral\hyperformats.

Secondly, the issue could be specific to the operating system you mentioned, which is Linux Mint 21.1 Vera 64-bit. Please try with these steps and let us know. We will investigate this further."

Thanks

Abhisheek

[Pedro]

Hi Tripathi,

I followed the steps on the link you sent. Then, from matlab Command Line:

« Did you mean:

>> addpath(genpath(supportPackageDirectory))

Unrecognized function or variable 'supportPackageDirectory'. »

> matlabshared.supportpkg.getInstalled

Name Version Base Product

------------------------------------------------------ ------- ------------------------

Image Processing Toolbox Hyperspectral Imaging Library 23.1.0 Image Processing Toolbox

Now using command:

MATLAB Version: 9.14.0.2286388 (R2023a) Update 3

MATLAB License Number: xxxxxx

Operating System: Linux 5.15.0-75-generic #82-Ubuntu SMP Tue Jun 6 23:10:23 UTC 2023 x86_64

Java Version: Java 1.8.0_202-b08 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode

-----------------------------------------------------------------------------------------------------

MATLAB Version 9.14 (R2023a) License xxxxxx

Curve Fitting Toolbox Version 3.9 (R2023a) License xxxxxx

Image Acquisition Toolbox Version 6.7.1 (R2023a) License xxxxxx

Image Processing Toolbox Version 11.7 (R2023a) License xxxxxx

Mapping Toolbox Version 5.5 (R2023a) License xxxxxx

Optimization Toolbox Version 9.5 (R2023a) License xxxxxx

Parallel Computing Toolbox Version 7.8 (R2023a) License xxxxxx

Statistics and Machine Learning Toolbox Version 12.5 (R2023a) License xxxxxx

Symbolic Math Toolbox Version 9.3 (R2023a) License xxxxxx

And:

which hypercube -all

/home/pedro/Documents/MATLAB/SupportPackages/R2023a/toolbox/images/supportpackages/hyperspectral/hyperformats/hypercube.m % hypercube constructor

>>

enviwrite

Unrecognized function or variable 'enviwrite'

Also my add-on manage:

More:

My matlab is installed on the following folder:

/opt/MATLAB/