When I use ginput it creates an error in input line 84:: SWITCH expression must be a scalar or string constant.

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Ronald Ouwerkerk 2017-5-22

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https://ww2.mathworks.cn/matlabcentral/answers/341411-when-i-use-ginput-it-creates-an-error-in-input-line-84-switch-expression-must-be-a-scalar-or-strin

When I use input as [x,y] = ginput(2) it returns an error: SWITCH expression must be a scalar or string constant. This error is generated in a switch statement that depends on the variable 'mode'. The variable mode is set and generated within input.m as mode = waitForUserInput(fig) where waitForUserInput is a local function. Now this waitForUserInput looks for the figures UserData. I have used the figures UserData to store vital information on the content of the figure (I display a modified image and keep the original in UserData). So I guess I have to put the UserData somewhere else. Where else can I store the my user data so it does not interfere with Matlab functions now and in the future?

Thanks

Ronald Ouwerkerk