where can I find helperCalc​ulateClass​Weights helper function?

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Ziyuan LI
Ziyuan LI 2023-8-16
评论： Steven Lord 2023-8-16
Hi! I am tryin to repeat the pointnet++ code https://www.mathworks.com/help/deeplearning/ug/aerial-lidar-segemation-using-pointnet.html . However, I stuck at the code.
[weights,maxLabel,maxWeight] = helperCalculateClassWeights(fs,numClasses);
it return me the error.
Undefined function 'helperCalculateClassWeights' for input arguments of type
'matlab.io.datastore.FileSet'
The website said that "Use the helperCalculateClassWeights helper function, attached to this example as a supporting file, to calculate the point distribution across all the classes in the training dataset.". but the suporting function did not have the function helperCalculateClassWeights.
I wonder did matlab forget to add this function to the content or I should find it somewhere else.

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回答（1 个）

Walter Roberson
Walter Roberson 2023-8-16
移动：Steven Lord 2023-8-16
I do not have the Lidar Toolbox, but I do have the Deep Learning Toolbox.
After I execute the command
openExample('deeplearning_shared/AerialLidarSemanticSegmentationUsingPointNetExample')
then the file shows up at
~/Documents/MATLAB/Examples/R2023b/deeplearning_shared/AerialLidarSemanticSegmentationUsingPointNetExample/helperCalculateClassWeights.m
on my Mac.
  1 个评论
Steven Lord
Steven Lord 2023-8-16
That's correct. If you open the example in MATLAB, MATLAB will automatically cd into the example directory where the helper function is located.

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