"Name" is already a property of the custom layer whereas you can define the "Index" property under the Optional Properties. You can do something like below:
classdef myLayer < nnet.layer.Layer
properties
% (Optional) Layer properties.
LayerIndex
% Layer properties go here.
end
properties (Learnable)
% (Optional) Layer learnable parameters.
% Layer learnable parameters go here.
end
methods
function layer = myLayer(layerName, layerIndex)
% (Optional) Create a myLayer.
% This function must have the same name as the class.
% Layer constructor function goes here.
layer.Name = layerName;
layer.LayerIndex = layerIndex;
end
function [Z1, …, Zm] = predict(layer, X1, …, Xn)
% Layer forward function for prediction goes here.
end
function [dLdX1, …, dLdXn, dLdW1, …, dLdWk] = ...
backward(layer, X1, …, Xn, Z1, …, Zm, dLdZ1, …, dLdZm, memory)
% (Optional) Backward propagate the derivative of the loss
% function through the layer.
end
end
end
And use it as follows:
MyLayer = myLayer("MyCustomLayer",1)
