{smcl}
{* 09jul2020}{...}
{cmd:help mata mm_colrunsum()}
{hline}

{title:Title}

{p 4 4 2}
{bf:mm_colrunsum() -- Running sum of each column}


{title:Syntax}

{p 8 23 2}
{it:numeric matrix}
{cmd:mm_colrunsum(}{it:real matrix Z} [{cmd:,} {it:real scalar missing}{cmd:,} {it:real scalar quad}]{cmd:)}


{title:Description}

{p 4 4 2}{cmd:mm_colrunsum()} returns a matrix
containing the running sum within each column of {it:Z}.

{p 4 4 2}By default, {cmd:mm_colrunsum()} treats missing values as
contributing zero to the running sum. Specify {it:missing}!=0 to treat missing 
values as missing values; in this case, these values will turn the sum to missing.

{p 4 4 2}
Specify {it:quad}!=0 to request redirection to {cmd:quadrunningsum()} instead
of {cmd:runningsum()} (only relevant in Stata 10 or newer).


{title:Remarks}

{p 4 4 2}{cmd:mm_colrunsum()} was written for Stata 9 and predates
the release of official Stata's {helpb mf_runningsum:runningsum()}
function in Stata 10. Changes have been made to {cmd:mm_colrunsum()} so that
it redirects itself to {cmd:runningsum()} if used in Stata 10 or newer.


{title:Conformability}

    {cmd:mm_colrunsum(}{it:Z}{cmd:,} {it:missing}{cmd:,} {it:quad}{cmd:)}:
             {it:Z}:  {it:r x c}
       {it:missing}:  1 {it:x} 1
          {it:quad}:  1 {it:x} 1
        {it:result}:  {it:r x c}


{title:Source code}

{p 4 4 2}
{help moremata_source##mm_colrunsum:mm_colrunsum.mata} and
{help moremata10_source##_mm_colrunsum10:_mm_colrunsum10.mata}


{title:Author}

{p 4 4 2} Ben Jann, University of Bern, ben.jann@soz.unibe.ch


{title:Also see}

{p 4 13 2}
Online:  help for {bf:{help mf_sum:[M-5] sum()}},
{bf:{help mf_runningsum:[M-5] runningsum()}},
{bf:{help moremata}}