Matrix (file format)

Stores matrices and vectors. Only one triangle is written for symmetric or triangular matrices.

The header (the matrix definition) is optional. Therefore a pure text with only numbers in columns are also allowed. This simplifies the handling of external data.

Instead of a matrix file also an instrument file is allowed. The first column is the time [MJD], the other columns depends on the instrument type.

groops matrix version=20200123
LowerSymmetricMatrix( 4 x 4 )
  1.000000000000000000e+00
  0.000000000000000000e+00  1.000000000000000000e+00
  0.000000000000000000e+00  0.000000000000000000e+00  1.000000000000000000e+00
  0.000000000000000000e+00  0.000000000000000000e+00  0.000000000000000000e+00  1.000000000000000000e+00