some nftool basics - data in, net config, and net save

Hi - have some newbie/basic nftool questions using R2011a:

1. the GUI Select Data - selected Inputs file - summary shows correct data matrix, then selected Targets - the summary shows correct data matrix but replaces the Inputs with the Targets layout. So actuals: 5 inputs in input file, 1 output in targets file gets shown in summary as: 1 input and 1 target. All the data used were random numbers between 0 and 100. My network is called 'net'.

2. used advanced script generator to run nftool from script - added commands to load correct inputs and targets. nftool runs fine. The view(net) shows correct net 5 inputs and 1 output. I used 7 hidden nodes but while view(net) shows this structure running the command 'net' says inputs = 1 and outputs = 1 and no info on number of hidden nodes. Why is net structure different from view(net)?

3. Used 'save mypath net' to save the net but no *.MAT file was created.

4. Ran: myoutputs = net([1 2 3 4 5]); says input is wrong size.

Any advice welcome Thanks JohnG

Answer 1

[Greg Heath]

You have 1 5-dimensional input and 1 1-dimensional output. Therefore the sizes of your input and target matrices should be

[ 5 N ] = size(input)

[ 1 N ] = size(target)

For N =1, you have to transpose your 1x5 input.

Hope this helps.

Thank you for formally accepting my answer.

Greg

[John]

Thanks Greg - however, I did use the line: inputs = newData1.inputs'; targets = newData1.targets'; so my data was transposed. The nftool simulation worked fine and shows 5 inputs and 1 target. re my question 1: using the Import Wizard shows data import as 1053 x5: 1053 samples of 5 elements (using Matrix rows) - so that's good. When I then select the Targets the summary of the Inputs gets changed 1053 x 1. Weird??