如何定义不同大小的特征矩阵数组？

Question

The thing is that I want to do something like this:

MatrixXd matrices[5];

The produced errors are:

Error   C2238   unexpected token(s) preceding ';'   
Error   C2059   syntax error: ']'

OK, Eigen has its own syntax rules. But is it even possible to define such an array? MatrixXd is a template with yet unknown arguments which I want to specify later, and all the matrices are supposed to be of different sizes. So my questions are:

1. Is it possible to define an array of MatrixXd type?
2. If it is, what is the syntax for it?

The same is for other Eigen types like VectorXd or ArrayXXd .