Confusion Matrix didn't work in Classifcation Learner

Question

Zhijun Cui on 15 Mar 2019

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https://nl.mathworks.com/matlabcentral/answers/450225-confusion-matrix-didn-t-work-in-classifcation-learner

Edited: sandhya sandhya on 15 Mar 2019

After I trained a modle in Classification Learner App, I click the button of Confusion Matrix. But it didn't show the confusion matrix, reporting that ''<Model not trained>". The message in commond line are shown as below.

警告: 执行为类 mlearnapp.internal.ui.toolstrip.GenericButtonView 定义的事件 Clicked 的侦听程序回调时出现错误:
错误使用 confusionmat
输入参数太多。
出错 mlearnapp.internal.model.ConfusionMatrixFactory/createConfusionMatrix (line 10)
            confusionMatrixCounts = confusionmat(trueRespData, predictedRespData, 'order',
            classOrderToUse);
出错 mlearnapp.internal.ui.ConfusionMatrixPresenter/computeConfusionMatrix (line 70)
            confusionMatrix = this.ConfusionMatrixFactory.createConfusionMatrix( ...
出错 mlearnapp.internal.ui.ConfusionMatrixPresenter/updateView (line 63)
                this.ConfusionMatrixView.ConfusionMatrix = this.computeConfusionMatrix();
出错 mlearnapp.internal.ui.ConfusionMatrixPresenter (line 43)
            this.updateView();
出错 mlearnapp.internal.ui.plot.ConfusionMatrixPlotFactory/createPlotPresenter (line 11)
            presenter = mlearnapp.internal.ui.ConfusionMatrixPresenter( ...
出错 mlearnapp.internal.ui.toolstrip.GenericPlotButtonPresenter/openPlot (line 90)
                this.PlotPresenter = this.PlotFactory.createPlotPresenter(this.Session, this.HelpLauncher);
出错 mlearnapp.internal.ui.toolstrip.GenericPlotButtonPresenter/plotButtonClickedCallback (line 98)
            this.openPlot();
出错
mlearnapp.internal.ui.toolstrip.GenericPlotButtonPresenter>@(varargin)this.plotButtonClickedCallback(varargin{:})
(line 78)
            this.addListener(this.View, 'Clicked', @this.plotButtonClickedCallback);
出错 mlearnapp.internal.ui.toolstrip.GenericButtonView/buttonClickedCallback (line 58)
            this.notify('Clicked');
出错 mlearnapp.internal.ui.toolstrip.GenericButtonView>@(varargin)this.buttonClickedCallback(varargin{:})
(line 34)
            this.Button.ButtonPushedFcn = @this.buttonClickedCallback;
出错 internal.Callback.execute (line 128)
                    feval(callback, src, event);
出错 matlab.ui.internal.toolstrip.base.Action/PeerEventCallback (line 803)
                        internal.Callback.execute(this.PushPerformedFcn, this, eventdata);
出错 matlab.ui.internal.toolstrip.base.PeerInterface>@(event,data)PeerEventCallback(this,event,data)
出错 hgfeval (line 62)
        feval(fcn{1},varargin{:},fcn{2:end});
 
出错 javaaddlistener>cbBridge (line 52)
    hgfeval(response, java(o), e.JavaEvent)
出错 javaaddlistener>@(o,e)cbBridge(o,e,response) (line 47)
                          @(o,e) cbBridge(o,e,response)); 
> In mlearnapp.internal.ui.toolstrip.GenericButtonView/buttonClickedCallback (line 58)
  In mlearnapp.internal.ui.toolstrip.GenericButtonView>@(varargin)this.buttonClickedCallback(varargin{:}) (line 34)
  In internal.Callback.execute (line 128)
  In matlab.ui.internal.toolstrip.base.Action/PeerEventCallback (line 803)
  In matlab.ui.internal.toolstrip.base.PeerInterface>@(event,data)PeerEventCallback(this,event,data)
  In hgfeval (line 62)
  In javaaddlistener>cbBridge (line 52)
  In javaaddlistener>@(o,e)cbBridge(o,e,response) (line 47) 