I have a gui slider that calls a value from an array that gets the error 'Index in position 2 is invalid. Array indices must be positive integers or logical values.' when trying to update a textbox which causes my gui to not work.

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Thomas Firsich 2018-6-15

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https://ww2.mathworks.cn/matlabcentral/answers/405856-i-have-a-gui-slider-that-calls-a-value-from-an-array-that-gets-the-error-index-in-position-2-is-inv

评论： Adam 2018-6-15

slError.PNG

I have attached my code so you can see where it is going on. Line 96 is where the code stops working when trying to update the text with the array indices.

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Thomas Firsich 2018-6-15

errorR.PNG

I am getting now just a weird error at certain values of the slider...4,6,7,8,9,etc...I am attaching the error and proof that the slider values are integers before it is passed on to the function.

Adam 2018-6-15

在 MATLAB Online 中打开

Those are not necessarily integers, depending how you formatted the output. Normally an integer would not trail a load of 0s unless it has some small error a long way down the decimal places.

You can just use

doc round

if you are happy that the errors are just minor rounding errors rather than something more significantly wrong.

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