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
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
2012-11-11
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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