is used PixelLabelDataStore?

Error is following

Error using pixelLabelDatastore>parseInputs (line 202)

'FileExtensions' is not a recognized parameter. For a list of valid name-value pair arguments, see the documentation for

this function.

Error in pixelLabelDatastore (line 151)

[location, classes, values,params] = parseInputs(varargin{:});

Error in Pxds (line 32)

pxds = pixelLabelDatastore(lblLoc,classNames,pixelLabelID ,'FileExtensions','.nii','ReadFcn', sampleReadFcn);

My code

imageDir = fullfile(tempdir,'BraTS');

if ~exist(imageDir,'dir')

mkdir(imageDir);

end

sourceDataLoc = [imageDir filesep 'Task01_BrainTumour'];

volLoc = fullfile(sourceDataLoc , 'image');

if ~exist(volLoc,'dir')

mkdir(volLoc);

end

lblLoc = fullfile( sourceDataLoc,'Label');

if ~exist(lblLoc,'dir')

mkdir(lblLoc);

end

sampleReadFcn =@(x) niftiread(x)

imds = imageDatastore(volLoc,'FileExtensions','.nii','ReadFcn',sampleReadFcn);

classNames = ["background","tumor"];

pixelLabelID = [0 1];

pxds = pixelLabelDatastore(lblLoc,classNames,pixelLabelID ,'FileExtensions','.nii','ReadFcn', sampleReadFcn);

Answer 1

[Walter Roberson]

FileExtensions is from a later release than you are using.

Your release cannot used nii files with pixel label store, if I recall correctly; in your release it is not possible to customize the read function.

[hla hla myint]

How to use pixel label store. Please give me code.

[Walter Roberson]

The code you were using looks valid for later releases of MATLAB. If my memory is correct, you cannot create a pixel label datastore from nii files in your version of MATLAB.

You might be able to use other code to read the nii files and save them as an image format accepted by your version such as a png file.