how to tabulate complex numbers using fprintf?

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Hi All,
I have some results in complex form. I want to tabulate these results by using fprintf but I just get the real parts of numbers on my command window. Here is my code:
g=@(x)x^4-(0.4982*x^3)+(2.7464*x^2)-(1.1146*x)+(2.6699)
dgdx=@(x)(4*x^3)+(1.4946*x^2)+(5.4928*x)+(1.1146)
x0=1+i
x=x0
it_no=0
fprintf('\n\n%18s%18s%18s\n','it_no','x','g(x)');
while 1
it_no=it_no+1;
xprev=x;
x=xprev-(g(x)./dgdx(x));
if abs(g(x))<10^-4;
break
end
fprintf(' %17.0f\t %17.7f\t %17.7f\t\n',[it_no,x,g(x)]);
end
fprintf(' %17.0f\t %17.7f\t %17.7f\t\n',[it_no,x,g(x)])
How can I tabulate both real and imaginary parts of complex numbers using fprintf? Anyone to help me for this problem?
I'll appreciate for any help.
Thanks Already!

采纳的回答

Star Strider
Star Strider 2012-11-11
编辑:Star Strider 2012-11-11
You have to separate the real and imaginary parts and print them individually. See if replacing your fprintf statements with this one produces the results you want:
fprintf(' %17.0f\t %17.7f %11.7f*i\t %17.7f %11.7f*i\t\n',[it_no,real(x),imag(x),real(g(x)),imag(g(x))])
  2 个评论
Otto
Otto 2012-11-11
Thank you very much for your interest. I have a last question: Is it possible to use "+" sign between real and imaginary parts or do i have to display results in the format that you suggested?
Star Strider
Star Strider 2012-11-11
编辑:Star Strider 2012-11-11
My pleasure!
To get a ‘+’ sign, insert a ‘+’ right after the ‘%’ in the numeric format specifiers. This forces fprintf (and all other functions that use this sort of format) to print the sign. Use this for your fprintf statements to do that:
fprintf(' %17.0f\t %17.7f %+11.7f*i\t %17.7f %+11.7f*i\t\n',[it_no,real(x),imag(x),real(g(x)),imag(g(x))])

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