Neural Network input error

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i have a table of input 30 rows* 9 columne and target table 30*1
i tried to run newff as below net=feedforwardnet(1) [tr,net]=train(net,input,target)
but it does not work because of an error below Error using network/train (line 340) Number of inputs does not match net.numInputs.
any advice pls

Accepted Answer

Greg Heath
Greg Heath on 4 Nov 2015
input and target matrices should have the same number of columns
[ I N ] = size(input)
[ O N ] = size(target)
Hope this helps.
Thank you for formally accepting my answer
Greg

More Answers (1)

Nitin Khola
Nitin Khola on 3 Nov 2015
This appears to be a dimension mismatch issue. If you are new to using the Neural Network Toolbox, I would strongly recommend using the app. To open the app, use the "nnstart" command. The app allows to select which of the two, rows or columns, are the samples. By default, when using commands for the Neural Network Toolbox, users often run into issues because they expect the "rows" to be treated as samples when the function that they use treats "columns" as samples. The app offers a choice and it will help you ensure that the dimensions match.
  1 Comment
MUKESH KUMAR
MUKESH KUMAR on 8 May 2020
I faced issue after tranning model and during prediction same error "Error using network/sim (line 266)
Number of inputs does not match net.numInputs."
while i tried both sim(net,input) or sim(net,input') with same size of data input in traning

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