I am doing some simple recoding and data cleaning on a relatively large
data set. I tried to destring a variable, and got the error message
that there was no more room. I saved the data, cleared, set my memory
higher, and reopened the data. Then I tried to pick up where I left off
with destringing, and got an error message that the variable is not
found! What happened to my variable?
. replace pared="" if pared=="*"
(491 real changes made)
. destring pared, replace
no room to add more variables due to width
An attempt was made to add a variable that would have increased the
memory
required to store an observation beyond what is currently possible.
You have the
following alternatives:
1. Store existing variables more efficiently; see help compress.
2. Drop some variables or observations; see help drop. (Think of
Stata's data
area as the area of a rectangle; Stata can trade off width and
length.)
3. Increase the amount of memory allocated to the data area using
the set
memory command; see help memory.
r(902);
. save, replace
file msbl03.dta saved
. clear
. set mem 500m
Current memory allocation
current memory usage
settable value description (1M = 1024k)
--------------------------------------------------------------------
set maxvar 5000 max. variables allowed 1.733M
set memory 500M max. data space 500.000M
set matsize 400 max. RHS vars in models 1.254M
-----------
502.987M
. use msbl03
. destring pared, replace
variable pared not found
r(111);
I know, I know - never do data management interactively...
Thanks!
Sarah
--
Sarah A. Mustillo, Ph.D
Department of Psychiatry and Behavioral Sciences
Duke University School of Medicine
Box 3454
Durham NC 27710
