class 'matlab.io​.datastore​.PixelLabe​lDatastore​' is not allowed. Error !!!!!

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Amira Youssef
Amira Youssef 2023-3-10
评论： Steven Lord 2023-3-10
How can I solve this problem please
Array formation and parentheses-style indexing with objects of
class 'matlab.io.datastore.PixelLabelDatastore' is not allowed.
Use objects of class 'matlab.io.datastore.PixelLabelDatastore'
only as scalars or use a cell array.

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回答（1 个）

Steven Lord
Steven Lord 2023-3-10
Ran in:
You can make an array of numeric data in MATLAB.
A = [1 2; 3 4]
A = 2×2
1 2 3 4
You cannot make an array of PixelLabelDatastore objects like that. You need to either use one PixelLabelDatastore or you need to make a cell array of PixelLabelDatastore objects. If you choose the latter approach, know that some functions may not accept a cell array of datastores.
If you show us a small sample of your code where this error occurs and explain what you want this code to do we may be able to offer alternate suggestions.
  2 个评论
Amira Youssef
Amira Youssef 2023-3-10
I was trying to get the hausdorff distance for CT segmented images
I fixed the pixellabeldatastore error but now whenever I run my code matlab crashes now can you help me please. my ground truth are saved as .mat
I_GT_struct=pxdsTruth.Files;
I_Seg_struct=pxdsResults.Files;
for i=0:76
I_GTx =load(I_GT_struct{i,1});
I_GT= I_GTx.cropLabel;
I_Segx= load(I_Seg_struct{i,1});
I_Seg=I_Segx.labelImage;
[~, ~, HD, ~, ~, AVD, ~] = HD_Distance1(I_GT,I_Seg ,[1 1 1],95);
[TPos,FPos,FNeg,DSC] = Segmentation_Errors(I_GT,I_Seg);
HD(i)=HD;
DSC(i)=DSC;
AVD(i)=AVD;
i=i+1;
end
Steven Lord
Steven Lord 2023-3-10
So what in this code is a datastore and what isn't?
If you want to perform mathematics on the data from the datastore you're probably going to want to create a tall array from that datastore and perform math on the tall array instead of the datastore.

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