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Hello, my code is:
t=1;
h=6.626*10^-34;
e=2.718281828459;
l=1.757*10^-29;
m=1.652*10^-29;
n=0.8*m;
o=2*pi*395581*10^9;
p=2*pi*443941*10^9;
q=2*pi*48360*10^9;
w=1;
M=[0,(0.E-323+sqrt(-1)*0.132584E5),(0.E-323+sqrt(-1)*0.E-323),( ...
0.E-323+sqrt(-1)*(-0.132584E5)),0,0,(0.E-323+sqrt(-1)*0.E-323),0, ...
0;(0.E-323+sqrt(-1)*0.132584E5),(sqrt(-1)*(-1)).*((-1).*o+w),( ...
0.E-323+sqrt(-1)*0.E-323),0,(0.E-323+sqrt(-1)*(-0.132584E5)),0,0,( ...
0.E-323+sqrt(-1)*0.E-323),0;(0.E-323+sqrt(-1)*0.E-323),(0.E-323+ ...
sqrt(-1)*0.E-323),(sqrt(-1)*(-1)).*((-1).*p+w),0,0,(0.E-323+sqrt( ...
-1)*(-0.132584E5)).*e.^(sqrt(-1).*t.*((-1).*o+p+(-1).*q+w)),0,0,( ...
0.E-323+sqrt(-1)*0.E-323);(0.E-323+sqrt(-1)*(-0.132584E5)),0,0,( ...
sqrt(-1)*(-1)).*(o+(-1).*w),(0.E-323+sqrt(-1)*0.132584E5),( ...
0.E-323+sqrt(-1)*0.E-323),(0.E-323+sqrt(-1)*0.E-323),0,0;0,( ...
0.E-323+sqrt(-1)*(-0.132584E5)),0,(0.E-323+sqrt(-1)*0.132584E5),0, ...
(0.E-323+sqrt(-1)*0.E-323),0,(0.E-323+sqrt(-1)*0.E-323),0;0,0,( ...
0.E-323+sqrt(-1)*(-0.132584E5)).*e.^(sqrt(-1).*t.*(o+(-1).*p+q+( ...
-1).*w)),(0.E-323+sqrt(-1)*0.E-323),(0.E-323+sqrt(-1)*0.E-323),( ...
sqrt(-1)*(-1)).*((-1).*q+w),0,0,(0.E-323+sqrt(-1)*0.E-323);( ...
0.E-323+sqrt(-1)*0.E-323),0,0,(0.E-323+sqrt(-1)*0.E-323),0,0,( ...
sqrt(-1)*(-1)).*(p+(-1).*w),(0.E-323+sqrt(-1)*0.132584E5).*e.^( ...
sqrt(-1).*t.*(o+(-1).*p+q+(-1).*w)),(0.E-323+sqrt(-1)*0.E-323);0,( ...
0.E-323+sqrt(-1)*0.E-323),0,0,(0.E-323+sqrt(-1)*0.E-323),0,( ...
0.E-323+sqrt(-1)*0.132584E5).*e.^(sqrt(-1).*t.*((-1).*o+p+(-1).*q+ ...
w)),(sqrt(-1)*(-1)).*(q+(-1).*w),(0.E-323+sqrt(-1)*0.E-323);0,0,( ...
0.E-323+sqrt(-1)*0.E-323),0,0,(0.E-323+sqrt(-1)*0.E-323),(0.E-323+ ...
sqrt(-1)*0.E-323),(0.E-323+sqrt(-1)*0.E-323),0]
but my output is:
M =
1.0e+15 *
Columns 1 through 5
0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 - 0.0000i 0.0000 + 0.0000i
0.0000 + 0.0000i 0.0000 + 2.4855i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 - 0.0000i
0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 2.7894i 0.0000 + 0.0000i 0.0000 + 0.0000i
0.0000 - 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 - 2.4855i 0.0000 + 0.0000i
0.0000 + 0.0000i 0.0000 - 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i
0.0000 + 0.0000i 0.0000 + 0.0000i -0.0000 - 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i
0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i
0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i
0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i
Columns 6 through 9
0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i
0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i
0.0000 - 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i
0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i
0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i
0.0000 + 0.3039i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i
0.0000 + 0.0000i 0.0000 - 2.7894i 0.0000 + 0.0000i 0.0000 + 0.0000i
0.0000 + 0.0000i -0.0000 + 0.0000i 0.0000 - 0.3039i 0.0000 + 0.0000i
0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i
For example the second entry. It is not equal to 0. But in the output it is.How can I stop that ?

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KSSV
KSSV 2022년 3월 10일
They are not zeros....See that a number 1.0e+15 is multiplied to every element.
Stephen23
Stephen23 2022년 3월 10일
Ran in:
Ran in:
"For example the second entry. It is not equal to 0. But in the output it is."
No, it is not equal to zero. Lets have a look at it:
t=1;
h=6.626*10^-34;
e=2.718281828459;
l=1.757*10^-29;
m=1.652*10^-29;
n=0.8*m;
o=2*pi*395581*10^9;
p=2*pi*443941*10^9;
q=2*pi*48360*10^9;
w=1;
M=[0,(0.E-323+sqrt(-1)*0.132584E5),(0.E-323+sqrt(-1)*0.E-323),( ...
0.E-323+sqrt(-1)*(-0.132584E5)),0,0,(0.E-323+sqrt(-1)*0.E-323),0, ...
0;(0.E-323+sqrt(-1)*0.132584E5),(sqrt(-1)*(-1)).*((-1).*o+w),( ...
0.E-323+sqrt(-1)*0.E-323),0,(0.E-323+sqrt(-1)*(-0.132584E5)),0,0,( ...
0.E-323+sqrt(-1)*0.E-323),0;(0.E-323+sqrt(-1)*0.E-323),(0.E-323+ ...
sqrt(-1)*0.E-323),(sqrt(-1)*(-1)).*((-1).*p+w),0,0,(0.E-323+sqrt( ...
-1)*(-0.132584E5)).*e.^(sqrt(-1).*t.*((-1).*o+p+(-1).*q+w)),0,0,( ...
0.E-323+sqrt(-1)*0.E-323);(0.E-323+sqrt(-1)*(-0.132584E5)),0,0,( ...
sqrt(-1)*(-1)).*(o+(-1).*w),(0.E-323+sqrt(-1)*0.132584E5),( ...
0.E-323+sqrt(-1)*0.E-323),(0.E-323+sqrt(-1)*0.E-323),0,0;0,( ...
0.E-323+sqrt(-1)*(-0.132584E5)),0,(0.E-323+sqrt(-1)*0.132584E5),0, ...
(0.E-323+sqrt(-1)*0.E-323),0,(0.E-323+sqrt(-1)*0.E-323),0;0,0,( ...
0.E-323+sqrt(-1)*(-0.132584E5)).*e.^(sqrt(-1).*t.*(o+(-1).*p+q+( ...
-1).*w)),(0.E-323+sqrt(-1)*0.E-323),(0.E-323+sqrt(-1)*0.E-323),( ...
sqrt(-1)*(-1)).*((-1).*q+w),0,0,(0.E-323+sqrt(-1)*0.E-323);( ...
0.E-323+sqrt(-1)*0.E-323),0,0,(0.E-323+sqrt(-1)*0.E-323),0,0,( ...
sqrt(-1)*(-1)).*(p+(-1).*w),(0.E-323+sqrt(-1)*0.132584E5).*e.^( ...
sqrt(-1).*t.*(o+(-1).*p+q+(-1).*w)),(0.E-323+sqrt(-1)*0.E-323);0,( ...
0.E-323+sqrt(-1)*0.E-323),0,0,(0.E-323+sqrt(-1)*0.E-323),0,( ...
0.E-323+sqrt(-1)*0.132584E5).*e.^(sqrt(-1).*t.*((-1).*o+p+(-1).*q+ ...
w)),(sqrt(-1)*(-1)).*(q+(-1).*w),(0.E-323+sqrt(-1)*0.E-323);0,0,( ...
0.E-323+sqrt(-1)*0.E-323),0,0,(0.E-323+sqrt(-1)*0.E-323),(0.E-323+ ...
sqrt(-1)*0.E-323),(0.E-323+sqrt(-1)*0.E-323),0];
It is unclear which element you mean by "second", so lets have at look at both of these:
format long G
M(1,2) % not zero
ans =
0 + 13258.4i
M(2,1) % not zero
ans =
0 + 13258.4i
Most likely you are making the mistake of confusing how data are displayed with what data are stored in memory.
Alland Kiepert
Alland Kiepert 2022년 3월 10일
So on the display there is just a 0 at certain entries because the exact terms would take too much space ?
James Tursa
James Tursa 2022년 3월 10일
Yes

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Jan
Jan 2022년 3월 10일
편집: Jan 2022년 3월 10일

0 개 추천

format long g
This enables more visible digits. You get the complete control over the output format, if you use fprintf() instead:
for iR = 1:size(M, 1)
for iC = 1:size(M, 2)
fprintf('%18.16g+%18.16g, ', real(M(iR, iC)), imag(M(iR, iC)));
end
fprintf('\n');
end
% [EDITED, thanks Walter!]

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Walter Roberson
Walter Roberson 2022년 3월 10일
fprintf('%18.16g+%18.16g, ', real(M(iR, iC)), imag(M(iR, iC) );

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Alland Kiepert
Alland Kiepert
2022년 3월 10일

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Jan
Jan
2022년 3월 10일

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