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How to convert a string to int

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Nu9
Nu9 2011-10-6
回答： York Dau 2020-4-4
hi
in my script i got this
function [] = N_call(src,evendata)
% Callback for secondary GUI editbox.
S = get(0,'userdata');
%set(S.ed2,'string',get(gcbo,'string')) % Set gui_passdata editbox string.
str13=get(src,'string');
if (isempty(str2num(str13)))
set(src,'String','0')
else
n=str13;
save n
set(S.ed13,'string',get(gcbo,'string')) % Set gui_passdata editbox string.
end
and it saves to workspace as a string i guess, it shows value='20' max-nothing min-nothing
and i've another function that need to use the value but like an int. for an example if i define a=2 in script it shows value=2 max=2 and min=2, and this is waht i want but i don't know how
i've tried to use str2num and double with no results
  2 个评论
Sean de Wolski
Sean de Wolski 2011-10-6
str2double(get(src,'string')) doesn't work?
Nu9
Nu9 2011-10-7
i've tried that but still the same,it saves as a char/string

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采纳的回答

Laura Proctor
Laura Proctor 2011-10-6
The command
save n
will save all the variables in your function workspace to a file named n.mat. Is this what you intend?
If you do wish to save str13 in the variable n as an integer, this command will work:
n = str2num(['uint8(',str13,')']);
  4 个评论
显示 2更早的评论
Nu9
Nu9 2011-10-7
it returned the same as before :/

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更多回答（2 个）

York Dau
York Dau 2020-4-4
k
York Dau
York Dau 2020-4-4
5

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