Displaying 2 results from an estimated 2 matches for "numpts".
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numpty
2011 May 19
1
Specifying Splits WhenUusing rpart
I am using the package rpart to explore various classification structures.
The call looks like:
seekhi1<-rpart(pvol~spec+a1+psize+eppres+numpt+icds+bivalcrt+stents+ppshare+
nhosp+nyrs,data=dat,method="class",
control=rpart.control(minsplit=30,xval=10))
The output is
1) root 198 87 1 (0.5606061 0.4393939)
2) psize=1,2 122 43 1 (0.6475410 0.3524590)
2013 Apr 12
0
RODBC MSSQL query with date - time tag
...-01-08 03:00:00'
However, when I try to accomplish this using R:
sqlQuery(channel1,"Select * from tb_ace_mag_1m where
time_tag>='2012-01-08 00:00:00' AND time_tag<'2012-01-08 03:00:00'", max=10)
I obtain no results:
[1] time_tag insert_time dsflag numpts gse_bx gse_by
gse_bz gse_lat gse_lon gsm_bx gsm_by gsm_bz
gsm_lat gsm_lon bt
<0 rows> (or 0-length row.names)
If I omit the time_tag parameter, I get the following:
> sqlQuery(channel1,"select * from tb_ace_mag_1m", max=10)...