Xiangping Jia,
When you -encode- a string variable, the new numeric variable has the
values 1, 2, 3, and so on. These values are probably not the same as
those in the variable y. In the example in your message, the label
"RAKAI" is assigned to the value 1 and not the value 21 when you
-replace newx=y-.
Below is an inefficient solution that creates correct value labels.
The solution is inefficient because it loops over all observations.
. count
. local n = r(N)
. forvalues i = 1/`n' {
local xi = x[`i']
local yi = y[`i']
lab def ylab `yi' "`xi'", modify
}
. lab val y ylab
. lab list ylab
ylab:
21 RAKAI
22 MASAKA
23 MBALE
24 SIRONKO
25 TORORO
26 BUSIA
Friedrich
On Tue, Mar 25, 2008 at 4:32 PM, Jia Xiangping <[email protected]> wrote:
> Dear all,
>
> There are two variables, one string and one numeric. The meaning of x
> is supposed to be attached to y as its value label.
>
> x y
> RAKAI 21
> RAKAI 21
> RAKAI 21
> MASAKA 22
> MASAKA 22
> MASAKA 22
> MASAKA 22
> MBALE 23
> MBALE 23
> MBALE 23
> SIRONKO 24
> SIRONKO 24
> TORORO 25
> TORORO 25
> BUSIA 26
>
>
> The simple way I did was:
> . encode x, gen(newx)
> . replace newx=y
> . list newx y
>
> Then it is found some are not replaced. I must read a solution
> somewhere, but I can not recall it. Could someone give a quick
> solution? Thanks.
>
> newx x
> 65. | TORORO IGANGA |
> 66. | WAKISO MAYUGE |
> 67. | WAKISO MAYUGE |
> 68. | WAKISO MAYUGE |
> 69. | WAKISO MAYUGE |
> 70. | WAKISO MAYUGE |
> 71. | WAKISO MAYUGE |
> 72. | 30 JINJA |
> 73. | 30 JINJA |
> 74. | 30 JINJA |
> 75. | 31 KAMULI |
> 76. | 31 KAMULI |
>
>
> ps. Stata 10. Windows XP.
>
>
>
> --
> Xiangping Jia
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