Using fprintf, how to print 1.234D+02 instead of 1.234E+02?

4 vues (au cours des 30 derniers jours)
Tian
Tian le 5 Jan 2017
I'd like to print scientific notations into a file, in the format of FORTRAN. For example, I want to print 1.234D+02 instead of 1.234E+02 into the file. How to realize it? Thank you all~
  2 commentaires
Stephen23
Stephen23 le 5 Jan 2017
fprintf only supports e or E.
You will have to either replace the characters after writing the file, or use sprintf and replace the characters before writing the file.
Tian
Tian le 6 Jan 2017
Thank you~ Trying sprintf

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José-Luis
José-Luis le 5 Jan 2017
Modifié(e) : José-Luis le 5 Jan 2017
EDIT
As said before, Stephen's answer is the way to go and I had previously posted an erroneous answer. Second try:
mag = @(x) floor(log10(abs(x)));
val = @(x) x./10.^mag(x);
x = [-25, -0.0001, 0, 0.00025, 1.005, 15, 12345];
leftVal = val(x);
leftVal(isnan(leftVal)) = 0;
rightVal = mag(x);
rightVal(rightVal == -Inf | rightVal == Inf) = 0;
sprintf('%.3fD%+03d\n',[leftVal;rightVal])
  4 commentaires
Tian
Tian le 6 Jan 2017
Thank you for your advice, I want to print numbers
Walter Roberson
Walter Roberson le 6 Jan 2017
Modifié(e) : Walter Roberson le 6 Jan 2017
S = sprintf('%.3e',YourNumber)
S(S=='e') = 'D' ;

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