About Matrix Dimension and Matrix algebra

ROOT
1

Hello ROOT Users

I wold like to use a matrix of very large dimension (1000X1000) in ROOT but I have read from the link

root.cern.ch/root/html/TMatrixTBase_double_.html

that the maximum dimension that we can use is 25 is it true ???

I am also finding difficulty in in understanding the matrix algebra in ROOT . I tried to consult the manual but i could not get it. There are also not sufficient examples in tutorial

can anybody help me out in understanding the matrix in ROOT

I am using matrix for solving the differential equation

With Regard

2

[quote] For (n x m) matrices where n*m <=kSizeMax (=25 currently)
storage space is available on the stack, thus avoiding expensive
allocation/deallocation of heap space .[/quote]Only means that
small matrices are fast to allocate and while large matrices
requires one extra memory allocations. I.e. this is not a
hard limit it is ‘just’ a performance issue.

[quote]can anybody help me out in understanding the matrix in ROOT
[/quote]What is it that you are not able to do? What did you try? How did it fail?

Philippe.