st: graph matrix

["Jun Xu" <mystata@hotmail.com>]

Two problems about stata graphing function.

1. It is much slower than version 7, which is probablydue to its calling of 
ado files.
2. Some problems with graph matrix?

I want graph matrix of a set of variables, and I used both graph7 ..., 
matrix and graph matrix, but the graph matrix didn't work.  It seems to be 
related to a particular variable, but I don't see why.

************************************************************************
. graph7 x1 x2 x3 x4, matrix

. graph matrix x1 x2 x3 x4, half
2795' invalid name
invalid syntax
invalid syntax
r(198);

. des x1 x2 x3 x4

                  storage  display     value
variable name   type   format      label      variable label
-------------------------------------------------------------------------------
x1                byte   %9.0g
x2                int    %9.2f
x3               int    %9.0g
x4               float  %9.0g

. sum female mcit3 cit9 fel

   Variable |       Obs        Mean    Std. Dev.       Min        Max
 -------------+--------------------------------------------------------
     x1      |       308    .3474026    .4769198          0          1
     x2      |       306    20.95098    26.26862          0        133
     x3      |       308    21.07143     25.8195          0        214
     x4      |       308    3.190877    .9872379          1       4.77
*************************************************************

It seems there is some problems related to x2 as I played aroudn with 
different variable set, but don't see why.  Need your help and thansk in 
advanced.

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