The cdsutils installation has been updated to r440, which includes a new CDSMatrix object that, once initialized, can be used to reference CDS front end EPICS matrix elements by name.

NOTE: this object uses the standard (row, column) ordering, for consistency with the most matrix element reference standards.

Example usage:

jameson.rollins@operator1:~ 0$ cdsutils --version
cdsutil 440
jameson.rollins@operator1:~ 0$ guardian -i
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aLIGO Guardian Shell
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ezca prefix: H1:

In [1]: from cdsutils import CDSMatrix

In [2]: m = CDSMatrix('LSC-PD_DOF_MTRX', rows={'DARM': 1, 'MICH': 2,}, cols={'OMC': 1, 'POP_A_RF45_Q': 5})

In [3]: m
Out[3]: 

In [4]: m('MICH', 'POP_A_RF45_Q')
Out[4]: 'LSC-PD_DOF_MTRX_2_5'

In [6]: m['MICH', 'POP_A_RF45_Q']
Out[6]: 0.0

In [7]: m['DARM', 'POP_A_RF45_Q'] = 0