Problem with dropdown itemdata propiety

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AngelRF64
AngelRF64 2019-8-12
评论： AngelRF64 2019-8-12
I have a dropdown, with some items, and I want that when I select a item, the value returned will not be the item in characters, I want value to be a number associated with the item. I saw in MatLab documentation that itemdata need to be a 1-by-n numeric array.
Say this items: {a,b,c,d}
And say this itemdata: [1 20 300 4000], I understand that this is a numeric matrix right?
When I select for example b, matlab returns a 1x2 charater matrix containing '2' and '0'. I want instead of return this, return the matrix element as a number.
I'm not doing this by code, just with the component editor of matlab app designer.
Any one can help me please?

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采纳的回答

Adam Danz
Adam Danz 2019-8-12
编辑：Adam Danz 2019-8-12
If you're using ItemData, the "Value" property will return the ItemData associated with your selection and it will be in the form of a string. Use str2double() to convert it to numeric.
Value = str2double(app.DropDown.Value);

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