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st: catplot problem


From   "Tunga Kantarci" <tungakantarci@hotmail.com>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: catplot problem
Date   Mon, 5 May 2008 12:31:59 +0200

Hello,

I am having a problem with catplot.

First, I consider the following command: 
fre q41a2vr1 if grandom == 1 & frandom == 2

q41a2vr1 -- Het plan van ^name5 q4 age randomisation 1plan 1 rating 3/4
----------------------------------------------------------------------
                         |      Freq.    Percent      Valid       Cum.
-------------------------+--------------------------------------------
Valid   1   helemaal niks |          4       2.78       7.69       7.69
          4                        |          3       2.08       5.77
13.46
          5                	|          6       4.17      11.54
25.00
          6                	|         10       6.94      19.23
44.23
          7               	|         16      11.11      30.77
75.00
          8                	|          9       6.25      17.31
92.31
          9                	|          1       0.69       1.92
94.23
          10 ideaal    	|          3       2.08       5.77     100.00
_______________________________________________
 

Second,  I consider the histogram regarding this command:
hist q41a2vr1 if grandom == 1 & frandom == 2, discrete freq


Also note that for q41a2vr1 I have 10 values from "1 helemaal niks" to "10
ideaal":

 fre q41a2vr1
q41a2vr1 -- Het plan van ^name5 q4 age randomisation 1plan 1 rating 3/4
----------------------------------------------------------------------
                         |      Freq.    Percent      Valid       Cum.
-------------------------+--------------------------------------------
Valid   1  helemaal niks |         19       0.95       4.53       4.53
        2                |          6       0.30       1.43       5.97
        3                |         11       0.55       2.63       8.59
        4                |         29       1.45       6.92      15.51
        5                |         53       2.64      12.65      28.16
        6                |         85       4.24      20.29      48.45
        7                |        107       5.34      25.54      73.99
        8                |         73       3.64      17.42      91.41
        9                |         18       0.90       4.30      95.70
        10 ideaal        |         18       0.90       4.30     100.00
        Total            |        419      20.91     100.00           
Missing .                |       1585      79.09                      
Total                    |       2004     100.00                      
----------------------------------------------------------------------

As seen in the first table and as I see in the histogram no bars, there are
no observations to correspond to "2" and "3".


Now, I run the following command:

catplot bar q41a2vr1 if grandom == 1 & frandom == 2
(alternatively I run the following command, but then check for frandom == 2
in the graph. These are same things: catplot bar frandom q41a2vr1 if grandom
== 1)

The problem arises here: Catplot does not give blanks for "2" and "3" that
the q41a2vr1 variable takes. 
And it (although it starts correctly with "1" the q412vr1 takes) takes the
value of 
"4" in the histogram and puts it for "2" in the catplot,
"5" in the histogram and puts it for "3" in the catplot,
"6" in the histogram and puts it for "4" in the catplot,
"7" in the histogram and puts it for "5" in the catplot,
"8" in the histogram and puts it for "6" in the catplot,
"9" in the histogram and puts it for "7" in the catplot,
"10" in the histogram and puts it for "8" in the catplot.

Hence what catplot shows is wrong.
It slides what is on the right in the histogram to the left in the catplot. 
How can I solve this problem?




 



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