GAN Neural Network ( Project and Reshape Layer ) error.

I copied the code from the following path https://uk.mathworks.com/help/deeplearning/ug/train-generative-adversarial-network.html#TrainGenerativeAdversarialNetworkGANExample-7 and try to run it on Matlab 2019a version it give error on the varialbe projectandreshapelayer that it is undefined function and variable. Image is attached.

[Manal Allehyani]

i have same error , but my version r2020

did you solve it?

[Alexander Hagg]

The projectAndReshapeLayer is a custom example that was provided to Matlab in one of the example. Open it using the following command and save it to your local project (or add it to your path).

edit(fullfile(matlabroot,'examples','nnet','main','projectAndReshapeLayer.m'))

Answer 1

[Yonglei GUI]

classdef projectAndReshapeLayer < nnet.layer.Layer
    properties
        % (Optional) Layer properties.
        OutputSize
    end
    properties (Learnable)
        % Layer learnable parameters.
        
        Weights
        Bias
    end
    
    methods
        function layer = projectAndReshapeLayer(outputSize, numChannels, name)
            % Create a projectAndReshapeLayer.
            
            % Set layer name.
            layer.Name = name;
            % Set layer description.
            layer.Description = "Project and reshape layer with output size " + join(string(outputSize));
            
            % Set layer type.
            layer.Type = "Project and Reshape";
            
            % Set output size.
            layer.OutputSize = outputSize;
            
            % Initialize fully connect weights and bias.
            fcSize = prod(outputSize);
            layer.Weights = initializeGlorot(fcSize, numChannels);
            layer.Bias = zeros(fcSize, 1, 'single');
        end
        
        function Z = predict(layer, X)
            % Forward input data through the layer at prediction time and
            % output the result.
            %
            % Inputs:
            %         layer - Layer to forward propagate through
            %         X     - Input data, specified as a 1-by-1-by-C-by-N 
            %                 dlarray, where N is the mini-batch size.
            % Outputs:
            %         Z     - Output of layer forward function returned as 
            %                 an sz(1)-by-sz(2)-by-sz(3)-by-N dlarray,
            %                 where sz is the layer output size and N is
            %                 the mini-batch size.
            % Fully connect.
            weights = layer.Weights;
            bias = layer.Bias;
            X = fullyconnect(X,weights,bias,'DataFormat','SSCB');
            
            % Reshape.
            outputSize = layer.OutputSize;
            Z = reshape(X, outputSize(1), outputSize(2), outputSize(3), []);
        end
    end
end
function weights = initializeGlorot(numOut, numIn)
% Initialize weights using uniform Glorot.
varWeights = sqrt( 6 / (numIn + numOut) );
weights = varWeights * (2 * rand([numOut, numIn], 'single') - 1);
end