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Re: Deleting entire row and/or column
Posted:
Apr 3, 2009 5:10 AM


On Apr 1, 2:50 pm, KFUPM <hussain.alqaht...@gmail.com> wrote: > Dear all > > I have large matrices having entire rows and/or columns of zeros and I > want to delete those zero rows and columns. My question, what is the > best (most compact) command to use in Mathematica. Please note that > the value of zero is the real zero i.e 0.0000 not just 0. > > Regards,
yourMatrix /. x_ /;x == 0 > Sequence[]
or if that doesn't work then
yourMatrix /. x : (_Real  _Integer) /; N[x] == 0. > Sequence[]
you could change this to Chop[x] is the values >0 could be considered zero.
Mike



