Strcat giving error
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Hi all
I have just written a code which works fine for its purpose but gives error while printing answer(Error in ==> intersection at 24
str=strcat(str,',',strcat(num2str(MMH),',',num2str(MorMH)));)
can somebody explain me why it is so?
Best
fid = fopen(strcat('OUTPUT\','intersection1','.csv'), 'w');
for i = 1:length(raw)
b= raw(i,1);
if (b==-9999)
data= raw(i+2:i+21, 1:4);
y1= data (:,1);
x1= data (:,2);
x2= data (:,3);
x3= data(:,4);
yn1= transpose (y1);
xn1= transpose (x1);
xn2=transpose (x2);
xn3= transpose (x3);
P1 = InterX([xn1;yn1],[xn2;yn1]);
P2 = InterX([xn1;yn1],[xn3;yn1]);
MMH= P1(2);
MorMH=P2(2);
str=strcat(str,',',strcat(num2str(MMH),',',num2str(MorMH)));
fprintf(fid, '%s\n', str);
end
end
fclose(fid) ;
fprintf('Program Complete');
댓글 수: 4
Walter Roberson
2012년 3월 5일
http://www.mathworks.com/matlabcentral/answers/13205-tutorial-how-to-format-your-question-with-markup
답변 (2개)
Image Analyst
2012년 3월 5일
Why don't you use sprintf() instead? I'm sure it will be much more straightforward. It's virtually identical to fprintf() which you already know how to use.
댓글 수: 4
Dr. Seis
2012년 3월 6일
SPRINTF doesn't write out to a file... it is creating a string (in this case called "str" as you have called it above). Then you use this output (i.e., "str") to print out the result using FPRINTF, which is what you did before. This modification was suggested in order to concatenate your string/number information in a way different from (and hopefully more error free than) the way you implemented above. Search for SPRINTF in your help menu (or type "doc sprintf" in the command window) for more information.
Walter Roberson
2012년 3월 6일
You never initialize str, and you never clear it: your code just keeps growing it longer and printing out the longer and longer string. You need to fix that logic problem before we can suggest what replacement you should use.
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