{smcl}
{* 09aug2004}{...}
{hline}
help for {hi:_mrsvmat}{right:(SJ5-1: st0082)}
{hline}

{title:Post-{help mrtab} utility}

{p 8 15 2}
{cmd:_mrsvmat}
 [ {cmd:,}
   {cmdab:s:tat:(}{it:statname}{cmd:)}
   {cmdab:rt:otal}
   {cmdab:ct:otal}
   {cmdab:nop:ercent}
   {cmdab:nol:abel}
   {cmd:clear}  ]

{p 4 8 2}where {it:statname} is {c -(} {cmdab:f:req} | {cmdab:co:lumn} |
{cmdab:r:ow} | {cmdab:ce:ll} | {cmdab:rcol:umn} | {cmdab:rce:ll} {c )-}


{title:Description}

{p 4 4 2} {cmd:_mrsvmat} can be used after {help mrtab} to create a data matrix
from the results left behind (note that the data in memory will be lost). Do
not use {cmd:_mrsvmat} unless you are confident that {help mrgraph} does not
meet your needs.

{p 4 4 2} Each row of the data created by {cmd:_mrsvmat} will represent one
response category. The variables are:

{p 8 20 2}R {space 10}Values/names of the response categories.

{p 8 20 2}L {space 10}Labels of the response categories (if available).

{p 8 20 2}C1, C2, ... Frequencies. Each variable represents one column of the
                      two-way frequency table. In the case of one-way tables,
                      just one variable, C1, will be created.

{p 8 20 2}T {space 10}Row totals (optionally).


{title:Options}

{p 4 8 2} {cmd:clear} allows {cmd:_mrsvmat} to clear the data in memory without
asking for confirmation.

{p 4 8 2} {cmd:ctotal} specifies that column totals be saved.

{p 4 8 2} {cmd:nolabel} specifies that labels be ignored.

{p 4 8 2} {cmd:nopercent} specifies that relative frequencies be formatted as
proportions (.271) rather than percentages (27.1).

{p 4 8 2} {cmd:rtotal} specifies that row totals be saved.

{p 4 8 2} {cmd:stat(}{it:statname}{cmd:)} determines the statistic to be
saved. {it:statname} is either {cmd:freq} for raw frequencies or
{cmd:column} (base: column total of observations), {cmd:row} (base: row total),
{cmd:cell} (base: grand total of valid observations), {cmd:rcolumn} (base: column
total of responses), or {cmd:rcell} (base: grand total of responses) for
relative frequencies. {cmd:stat(freq)} is the default.


{title:Example}

{p 8 12 2}{cmd:. use http://fmwww.bc.edu/RePEc/bocode/d/drugs.dta}{p_end}
{p 8 12 2}{cmd:. mrtab crime1-crime5, include response(2 3) by(sex) nofreq}{p_end}
{p 8 12 2}{cmd:. preserve}{p_end}
{p 8 12 2}{cmd:. _mrsvmat, stat(column) ctotal rtotal clear}{p_end}
{p 8 12 2}{cmd:. list, clean string(20)}{p_end}
{p 8 12 2}{cmd:. generate x=_n}{p_end}
{p 8 12 2}{cmd:. scatter C1 C2 x in 1/5, xtitle(Type of crime) ytitle(Percent) title(Criminal experiences (as a victim))}{p_end}


{title:Author}

{p 4 4 2} Ben Jann, ETH Zurich, jann@soz.gess.ethz.ch


{title:Also see}

{p 4 13 2} Manual:  {hi:[P] matrix mkmat}

{p 4 13 2} Online:  help for {help mrtab}, {help mrgraph}, {help svmat}