Hi, All
I have a problem of R memory space.
I am getting "Error: cannot allocate vector of size 198.4 Mb"
------------------------------
I've tried with:
> memory.limit(size=2047);
[1] 2047
> memory.size(max=TRUE);
[1] 12.75
> library('RODBC');
> Channel<-odbcConnectAccess('c:/test.MDB'); # inputdata:15 cols, 2000000
rows, 173 MB
> x<-sqlFetch(Channel,'data1');
> odbcCloseAll();
> gc(TRUE)
Garbage collection 69 = 2+2+65 (level 2) ...
3.6 Mbytes of cons cells used (38%)
183.8 Mbytes of vectors used (36%)
used (Mb) gc trigger (Mb) max used (Mb)
Ncells 134456 3.6 350000 9.4 350000 9.4
Vcells 24082306 183.8 67102875 512.0 78179534 596.5
> memory.size()
[1] 192.16
> NROW(x)
[1] 2000000
> x
YEAR MONTH ACT_AMT T M_WEIGHT ACT_AMTSUM GROWTH COMPCNT COMPCV
MODLCNT MODLCV FLAG_1 FLAG_2 PRICE HIGHEND_AMT
1 2002 1 511997 1 0.01563573 32745313 1.0000000 2
132.41674 13 170.54307 1 0 11906.91 0.2871111
2 2002 2 2254900 2 0.06886176 32745313 1.0000000 2
113.06057 17 176.79751 0 0 35232.81 0.4922613
....
> hbnreg<-function(data,option)
+ {
+ for(i in 1:NROW(option)) {
+ nam<-paste(substring(option[i],1,nchar(option[i])-2))
+ if(substring(option[i],nchar(option[i]))=='T') assign(nam,TRUE)
+ else assign(nam,FALSE)
+ }
+
x<-lm("ACT_AMT~T+M_WEIGHT+ACT_AMTSUM+GROWTH+COMPCNT+COMPCV+MODLCNT+MODLCV+FL
AG_1+FLAG_2+PRICE+HIGHEND_AMT",data=data)
+ y=list()
+ if(summary==TRUE){
+ z<-summary(x)
+ y$coefficients<-z$coefficients
+ y$residuals<-z$residuals
+ }
+ #if(influence==TRUE){
+ #z<-influence(x)
+ #y$hat<-z$hat
+ }
+
+ y
+ }
> y<-hbnreg(x,c('summary=T','influence=T'));
Error:cannot allocate vector of size 198.4 Mb <---- error
-------------------------------------
my work enviroment :
> version _
platform i386-pc-mingw32
arch i386
os mingw32
system i386, mingw32
status
major 2
minor 11.1
year 2010
month 05
day 31
svn rev 52157
language R
version.string R version 2.11.1 (2010-05-31)
- PC OS : 32bit WinXP pro sp3
- PC RAM : 1 GB
- Virtual memory : 1524 MB
----------------------------------
Could it be an hardware problem?
Thanks and best regards.
Young-Ju, Park
from Korea
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M%2E0000000000000do%40dllmain%2Ewwl737%2Ehanmail%2Enet%3E]
References
1. mailto:dllm...@hanmail.net
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