I'm completely new to Matlab and I need some help. I'm running a self-organising map with the Neural Networks toolbox.
It all works fine, I use
net = selforgmap([x y]);
net = train(net,mydata);
and then I get access to the nice plots. However I'm interested in the actual numbers generated by the som. 1)How do I access all the data underneath (is there a way to show all the vectors generated by the som package? For example: 2)how do I access the nodes weights? 3)How do I access the list of cases and their allocated Best Matching Units?
Many thanks
Unfortunately, I don't have R2012, (and thus, I don't have 'selforgmap'), so this answer is potentially too general.
That said, I suspect that the variable 'net' is a a Neural Network object and if you type into the Command Window
net
Then you'll get a display of properties in that object (here's a shortened version of what I get)
net =
Neural Network object:
architecture:
numInputs: 1
numLayers: 2
biasConnect: [1; 1]
inputConnect: [1; 0]
layerConnect: [0 0; 1 0]
outputConnect: [0 1]
numOutputs: 1 (read-only)
numInputDelays: 0 (read-only)
numLayerDelays: 0 (read-only)
And then you can access these properties like this:
net.numInputs
And if you want to see the methods available for that variable, you can do
methods(net)