Undefined function 'ind2rgb8' for input arguments of type 'uint8'

Question

Daniel barth 2021-8-11

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/896642-undefined-function-ind2rgb8-for-input-arguments-of-type-uint8

评论： Daniel barth 2021-8-20

With 2021a I get this error:

Writing DET for W:\NewRigFiles\LEFTRigDAQ1\2018\July2018\July01_DAQ1_[D]6-27-2018[T]11-17-30%\DET\S1\July01_DAQ1_[D]6-27-2018[T]11-17-32%.mat

Starting parallel pool (parpool) using the 'local' profile ...

Connected to the parallel pool (number of workers: 4).

Analyzing and transferring files to the workers ...done.

Error using ClassifyMultiCatArray (line 5)

The source code (E:\GoogleDrive\programming\MatLabProjects\MultiCatdetect2019\ClassifyMultiCatArray.m) for the parfor-loop that is trying to

execute on the worker could not be found.

Error in MultiCatOnEEGFileNames (line 69)

[DETs] = ClassifyMultiCatArray(ReformData,fb,trainedGN,allImages); % We now analize ReformData, which is filtered

exactly the same as training EEG

Caused by:

Undefined function 'ind2rgb8' for input arguments of type 'uint8'.

Error using remoteParallelFunction (line 84)

Worker unable to find file.

Undefined function 'ind2rgb8' for input arguments of type 'uint8'.

No problem with 2019b

What changed?

Thanks,

Dan

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Answer 1

DGM 2021-8-12

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/896642-undefined-function-ind2rgb8-for-input-arguments-of-type-uint8#answer_765372

在 MATLAB Online 中打开

Do you have mapping toolbox in the newer version? Does anything show up if you test with which()?

which ind2rgb8

If you don't have mapping toolbox, you can probably use

im2uint8(ind2rgb(picture,map))

or if you don't have IPT, you can do

uint8(ind2rgb(picture,map)*255)

That's just my guess though. If there are common pitfalls using parpool, I wouldn't know.

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Daniel barth 2021-8-20

You were right DGM. I needed to install the mapping toolbox. Although I did not get the message stating that until I took the code out of a "parfor" loop and put it into a "for" loop. Now that the mapping toolbox is installed I put things back into the parfor loop and all works fine.

many thanks,

Dan

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