Catherine Williams schrieb:
> Hi, I am new to Stata but am working through Ulrich
> Kohler's Data Analysis using Stata to get to grip with
> the software. One of the example:
>
> .graph box income, over(emp) produces this error:
> variable _box_sort not found
> r(111);
>
> or
>
> variable _000006 not found in using data
> r(111);
>
> or
>
> variable emp not found
> r(111);
>
> on different attempts to produce the graph.
>
> I have also tried:
>
> .sysuse auto, clear
> .graph box mpg, over(rep78) which produces the same
> errors.
Catherine,
thank you for using "Data analysis using Stata".
The commands you have showed us are definitely legal syntax. The only
explanation that comes to my mind is that your Stata installation have
become corrupted. Have you, or someone else, recently updated your Stata
installation? Quite often people forget to perform the last step of the
update. After the command
. update all
it is necessary to issue the command
. update swap
as well. Without this latter command your ado-files (external programs)
misfit with the Stata-"Kernel" (the compiled code in wstata.exe). The
effect are wired error messages up and then.
The same problem can arise if you have issued the command
. update ado
without stating
. update exe
. update swap
afterwards.
So, here is my proposal: issue the command -update swap- and try again
your graph commands again. If -update swap- brings up an error message like
1. Verifying new executables
File </path/stata-se.bin> was not found, aborting swap.
try to issue the commands
. update exe
. update swap
If the problem still remains please send the output of
. update query
Many regards
Uli
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