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Plot function fit




plotfit(net,inputs,targets) plots the output function of a network across the range of the inputs inputs and also plots target targets and output data points associated with values in inputs. Error bars show the difference between outputs and targets.

The plot appears only for networks with one input.

Only the first output/targets appear if the network has more than one output.

plotfit(net,inputs1,targets1,name1,inputs2,targets2,name2,...) plots multiple sets of data.

plotfit(...,'outputIndex',outputIndex) plots using an optional parameter that overrides the default index of the output element.


Plot Output and Target Values

This example shows how to use a feed-forward network to solve a simple fitting problem.

[x,t] = simplefit_dataset;
net = feedforwardnet(10);
net = train(net,x,t);

Figure Fit (plotfit) contains 2 axes. Axes 1 with title Function Fit for Output Element 1 contains 4 objects of type line. These objects represent Errors, Fit, Targets, Outputs. Axes 2 contains 3 objects of type line. This object represents Targets - Outputs.

Introduced in R2008a