How do I convert a value from a cell array into an integer?
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My problem is when I read one cell from table, for example 5, I need to convert this in integer value.
I try cell2mat function, but this function converts in matrix form and when I want to multiply it, it gets matrix but I only need a scaler:
d=5 (from the table)
e=cell2mat(d)
f=e*1 there i don't get 5, I get 53.
That is a problem for me.
1 个评论
David Young
2011-3-2
Please could you show a few lines of code that illustrate the problem? It should be possible to cut and paste the code from your question into MATLAB and replicate the result.
采纳的回答
Matt Tearle
2011-3-2
6 个投票
In addition to what David and Andreas said, I'm wondering if this table is coming from a GUI (ie a uitable) or something like that, so you're actually getting a string representation. In fact, if "5"*1 is resulting in 53, I'd bet that's the problem. Take a look in your Workspace at the class of d or type whos d in the Command Window. The solution is simple: use str2num to convert the table of strings to numbers.
As an aside, you don't need cell2mat for a single element of the table, just index in with curly braces, rather than parentheses. c(4,2) will return a single cell containing the string '5'; c{4,2} will return the contents of that cell - the string itself.
4 个评论
Eggo Ogge
2011-3-2
Matt Tearle
2011-3-2
ah, yes, str2double will work directly on a cell array, whereas str2num works only on strings (char arrays).
Ahmed Abdellatif
2018-2-26
Finding this answer after 1 day of searching was very helpful, thank you
Prateek Nagvani
2019-5-20
Thank you Matt!
更多回答（1 个）
Andreas Goser
2011-3-2
In MATLAB, also a scalar is a matrix - a 1x1 matrix.
In MATLAB the default data type is DOUBLE - so even if you assign
d=5;
the internal representation will not be exact 5. But you can work with integers data types see e.g. UINT16.
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