why can't i see the values of the numbers in my matrix?

i have used the ode23() function, to find a solution of some differential equations. As out put i gives me a cetor "t", and a matrix "x" with the solutions.

The problem is that i can't see the calculated values in the "x" matrice. in the works space window there is no problem, and for example the first column of the matrix looks something like this:

col 1:

1,00000000000000

0,999339985727093

0,995074819302742

0,983756810994156

0,961909664741749

0,926035719167643

...

but if i type "x(:,1)" in the command window, this is my output:

ans =

1.0e+018 *

    0.0000
    0.0000
    0.0000
    0.0000
    0.0000
    0.0000
    0.0000
   ...

why does it say 1.0e+18 ?

if i type "x(4,1)" i'll get this:

ans =

    0.9838

so clearly the numbers are there, but i can't see them or use them, because of the 1.0e+18

This gives me a problem when i want to use the solution to calculate something, and it also gives me a problem if i want to plot the solution. I just can't see anything but zero unless the numbers get large enough, which they does at the end of the timescale.

does anybody know, why this happens?

thx :)

Answer 1

[Azzi Abdelmalek]

It says 1.0e+18 because, some of your numbers are near 1.0e+18. It will not display 123444444444444444. then the other numbers which are smaller, for example 10 will be displayed 0.00000000000000001 e+18, because of your short or even long format you will see

 0.0000 e+18

Answer 2

[Jan]

Type this in the command window to change the display of the numerical values:

format long g

Alternatively you can avoid using the display command, which is called implicitly, and use fprintf instead:

fprintf('%g\n', x(:,1))