Error while using helperDown​loadPandas​etData function

While using this program

outputFolder = fullfile(tempdir,'Pandaset');
lidarURL = ['https://ssd.mathworks.com/supportfiles/lidar/data/' ...
    'Pandaset_LidarData.tar.gz'];
helperDownloadPandasetData(outputFolder,lidarURL);

I am getting this error but i have installed Lidar toolbox

Unrecognized function or variable 'helperDownloadPandasetData'.

[Walter Roberson]

That example requires that all of these be installed:

• Lidar Toolbox
• Deep Learning Toolbox
• Computer Vision Toolbox

[gaurav]

I already have all this installed

[Walter Roberson]

Try using

openExample('deeplearning_shared/Lidar3DObjectDetectionUsingPointPillarsExample')

Answer 1

[Gagan Agarwal]

Hi Gaurav,

The issue you are facing is because the 'helperDownloadPandasetData' is not an inbuilt function of the Lidar Toolbox and in the documentation it is explicitly defined as a user defined function at the end of page. I tried to run the code after defining the function and it was working fine.

function helperDownloadPandasetData(outputFolder,lidarURL)
% Download the data set from the given URL to the output folder.
    lidarDataTarFile = fullfile(outputFolder,'Pandaset_LidarData.tar.gz');    
    if ~exist(lidarDataTarFile,'file')
        mkdir(outputFolder);        
        disp('Downloading PandaSet Lidar driving data (5.2 GB)...');
        websave(lidarDataTarFile,lidarURL);
        untar(lidarDataTarFile,outputFolder);
    end    
    % Extract the file.
    if (~exist(fullfile(outputFolder,'Lidar'),'dir'))...
            &&(~exist(fullfile(outputFolder,'Cuboids'),'dir'))
        untar(lidarDataTarFile,outputFolder);
    end
end

For Additional Information please refer to the following documentation:

https://www.mathworks.com/help/deeplearning/ug/lidar-object-detection-using-complex-yolov4.html