R help - Nov 2008 - is there any way to apply mulitiple conditions in subset function

Hi All,

 

 

 

Let say

 

           > df

    Session_Setup DCT FwdDataVols_bin counts

761             0   1               1  87162

762             0   1               2  11495

763             0   1               3   3986

764             0   1               4   1583

765             0   1               5    920

766             0   1               6    920

767             0   1               8    306

768             0   1               9    966

769             0   1              12    307

770             0   1              13    305

771             0   1              14    355

772             0   1              17    308

773             0   1              19    308

774             0   1              22    616

775             0   1              23    307

776             0   1              25    307

777             0   1              26    308

778             0   1              27    306

779             0   1              86    308

780             0   1              90      1

781             0   1              92    306

782             0   1             296      1

783             0   1             298      1

784             0   1             300      1

785             0   1             304    303

786             0   1             321    306

787             0   1            2477      1

788             0   1            2490      2

789             0   1            2491      1

790             0   1            2492      1

791             0   1            2495    266

792             0   1            7047      1

793             0   1            7052      1

794             0   1            7055      4

795             0   1            7057      1

796             0   1            7058      1

797             0   1            7059      1

798             0   1            7061      1

799             0   1            7064      1

800             0   1            7065      2

801             0   1            7066      1

802             0   1            7067    293

803             0   1           30941      1

804             0   1           30942      1

805             0   1           30943      1

806             0   1           30946      1

807             0   1           30950      1

808             0   1           30953      1

809             0   1           30954      1

810             0   1           30958      1

811             0   1           30959      1

812             0   1           30964      2

813             0   1           30965      1

814             0   1           30966      1

815             0   1           30967      2

816             0   1           30968      1

817             0   1           30970      2

818             0   1           30972      3

819             0   1           30973      1

820             0   1           30976      1

821             0   1           30977    203

 

Subset(df,df$ FwdDataVols_bin>30 && df$ FwdDataVols_bin<100 )  
but it
doesn't work

 

 

Is there any other way to retrieve data between range 30-100

 

 

Thanks

K.Ravichandra

 

 


	[[alternative HTML version deleted]]

Kurapati,	Ravichandra (Ravichandra <ravichandra.kurapati <at>
alcatel-lucent.com> writes:
> 
>            > df
> 
>     Session_Setup DCT FwdDataVols_bin counts
> 
> 761             0   1               1  87162
> 
> 
> Subset(df,df$ FwdDataVols_bin>30 && df$ FwdDataVols_bin<100 )
but it
> doesn't work
> 
There is a subtle difference between && and &. If I am in doubt, I
first make
and isolated printout of the logical selection vector

df=data.frame(FwdDataVols=100+rnorm(10)*100)

df$FwdDataVols>10 && df$FwdDataVols<100
# gives FALSE

df$FwdDataVols>10 & df$FwdDataVols<100
# gives FALSE TRUE FALSE.....

subset(df,df$FwdDataVols>10 & df$FwdDataVols<100)

# Probably more usual, but maybe more difficult to understand
df[df$FwdDataVols>10 & df$FwdDataVols<100,]


Dieter