How to clear file name and file path information?

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Leon
Leon 2019-10-20
评论： Leon 2019-10-20
Most variables can be cleared by
var = [];
When I treid to do the same thing for my file name and path like below:
app.File.Value = [];
app.Path.Value = [],
I get this error:
Error using matlab.ui.control.EditField/set.Value
'Value' must be a character vector or a string scalar.
What is a better way of clearing these two variables? Thanks!

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采纳的回答

Walter Roberson
Walter Roberson 2019-10-20
Use '' or "" as the value instead of []

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