combining string and numerical values

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Andrew Waller
Andrew Waller 2016-9-30
评论： Andrew Waller 2016-9-30
Within my conditional analysis of a program I'm working on that basically evaluates partial derivatives to give characteristics of a function, I'm trying to combine a string 'a numerical example is' with a chosen number from an array (example(k)). I've tried a few different methods and I believe I need to utilize num2str but when I try to use it, I get back the error "Input to num2str must be numeric." which doesn't make sense because my value is in fact a number?
Just for trouble shooting purpose I tried int2string and was able to get a number but obviously I need the full number, not just an integer.
for k = 1:numel(B)
if (A(k))>0
if(B(k))<0
disp(['f(x,y) has a saddlepoint at' num2str(x_crit(k)) ])
end
end
end
If it helps these are the values I'm trying to call into the string. Thanks in advance for the help!
x_crit =
0
-13/10
13/10
0
0
-13/20
13/20
-13/20
13/20

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采纳的回答

KSSV
KSSV 2016-9-30
doc fprintf ..
fprintf('f(x,y) has a saddlepoint at %f\n', x_crit(k))

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