error with sprintf add operation between 2 terms resulting in string
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I used sprintf Mt1a to receive a value which someone not experienced with matlab would understand the value ,there appears to be a conflict in " Mt1a+Mt2a " which gives me multiple values ,i tried using str2double to fix my result but it returns NaN ,how can i fix the result for b ?
b=sprintf('%.0f\n',a./str2double(Mt1a+Mt2a)) % ==>how i attempted to use str2double
Mt2a=66539;
Fa=88050;
d2p=37;
p=6;
rb=0.08;
tga2p=p/(pi*d2p);
x=(tga2p+rb)/(1-(tga2p*rb));
Mt1a=sprintf('%.0f\n',Fa*(d2p/2)*x)
a=Fa*(d2p/2)*tga2p;
b=a./(Mt1a+Mt2a)
2 个评论
Mt1a=sprintf('%.0f\n',Fa*(d2p/2)*x) % <- why are you converting this to character?
Mt1a+Mt2a % <- did you look at the output when you "add" two character vectors?
Mixing character vectors into your numeric operations is hindering you, not helping you. Get rid of them.
Opariuc Andrei
2021-3-25
编辑：Opariuc Andrei
2021-3-25
if i remove sprintf from Mt1a the value for Mt1a+Mt2a is fixed but the value for Mt1a without sprintf =>Mt1a =
2.152845579898380e+05 . the value with sprintf =>Mt1a=215285 . I used sprintf because that's the only command i know of ,to get from Mt1a= 2.152845579898380e+05 toMt1a=215285.
Mt1a(with sprintf)+Mt2a= ss.
采纳的回答
Star Strider
2021-3-25
1 个投票
‘I used sprintf because that's the only command i know of ,to get from Mt1a= 2.152845579898380e+05 toMt1a=215285.’
If you want to eliminate the fractional part of the numbers, use the round, fix, floor or ceil functions, depending on the result you want. (I provided a link to round, links to the others are in that documentation.)
3 个评论
Opariuc Andrei
2021-3-25
Opariuc Andrei
2021-3-25
Star Strider
2021-3-25
As always, my pleasure!
更多回答（1 个）
Do you want to concatenate a number and a piece of text together?
a = '1234'; % a is a char vector
b = 5;
c = [a, num2str(b)]
as = "1234"; % as is a scalar string
b = 5;
cs = as + b % automatically converts 5 to "5" then appends it to as
Or do you want to add them?
d = a + b % add 5 to the ASCII values of the characters '1', '2', '3', and '4'
d2 = double('6789')
f = str2double(a)+b % add 5 to the number represented by a
f2 = double(as)+b % double on a string array converts it to the number it represents
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