Hi,

I have a small problem with printing of MatrixXd and VectorXd objects via std::cout:
I can't change the precision of the elements. Even after the statements:

Code: Select all

 std::cout.precision(11);
std::cout.setf(std::ios::scientific, std::ios::floatfield);


a MatrixXd or VectorXd object is only printed with 4 digits. Switching to scientific format works fine...

How do I get more digits?
(BTW, this is on Mac OS X 10.6.1 using gcc 4.2.1 and eigen 2.0.9)

Thanks,

Markus

Yeah, the 2.0 version is a bit stupid in that it doesn't honor cout.precision().

With 2.0, to change the precision you have to use a IOFormat, see the docs for that class, and see MatrixBase::format().

With the development branch, cout.precision() is honored by default.