Message-ID: <1342097534.33201.YahooMailNeo@web39403.mail.mud.yahoo.com>
Date: 2012-07-12T12:52:14Z
From: arun
Subject: Add row into a Matrix witout headers from Function
In-Reply-To: <OFF3686375.1CD23566-ON86257A39.00459587-86257A39.0045DDD0@usgs.gov>
Hi Jean,
If we convert the NEWMatrix to dataframe,then headers do appear.
NewMatrix1<-data.frame(NewMatrix)
?NewMatrix1
???????????? X1 X2 X3 X4
SumMatrix?? SUM 57 64 65
CountMat? COUNT? 3? 3? 3
#assigning headers to NULL
?colnames(NewMatrix1)<-NULL
?NewMatrix1
???????????? NA NA NA NA
SumMatrix?? SUM 57 64 65
CountMat? COUNT? 3? 3? 3
names(NewMatrix1)
NULL
I guess then it will be better to store as matrix.
A.K.
----- Original Message -----
From: Jean V Adams <jvadams at usgs.gov>
To: Rantony <antony.akkara at ge.com>
Cc: r-help at r-project.org
Sent: Thursday, July 12, 2012 8:42 AM
Subject: Re: [R] Add row into a Matrix witout headers from Function
Try using the rbind() function to combine the two vectors from colSums()
into a matrix.? Then assign row names and get rid of column names using
the dimnames() function.? For example:
OLDMatrix <- matrix(c(22, 25, 10, 24, 27, 13, 23, 27, 15),
? ? ? ? ncol=3, dimnames = list(NULL, c("X1", "X2", "X3")))
NEWMatrix <- rbind(colSums(OLDMatrix ), colSums(!is.na(OLDMatrix )))
dimnames(NEWMatrix) <- list(c("SUM", "COUNT"), NULL)
OLDMatrix
? ? X1 X2 X3
[1,] 22 24 23
[2,] 25 27 27
[3,] 10 13 15
NEWMatrix
? ? ? [,1] [,2] [,3]
SUM? ? 57? 64? 65
COUNT? ? 3? ? 3? ? 3
Jean
Rantony <antony.akkara at ge.com> wrote on 07/12/2012 12:22:53 AM:
> Hi,
> Here i have a matrix like this,
>
> OLDMatrix <-
> X1? ? ? ? X2? ? ? ? X3
> -----? ? ? ------? ? ------
> 22? ? ? ? ? 24? ? ? ? 23
> 25? ? ? ? ? 27? ? ? ? 27
> 10? ? ? ? ? 13? ? ? ? 15
>
> the thing is,
> im running two function(SUM,COUNT) to get output in another matrix
called
> NEWMatrix
>
> NEWMatrix <- c("SUM",colSums(OLDMatrix ))
> NEWMatrix? <- c("COUNT",colSums(!is.na(OLDMatrix )))
>
> Actually i need to get output like this,
>
> NEWMatrix <-
>
> SUM? ? ? 57? ? ? 64? ? ? ? 65
> COUNT? 3? ? ? ? 3? ? ? ? ? 3
>
> Instead of getting out put like above, new row getting replaced by new
row
> of vales.
> and after executing the function i getting the values with header. How
can i
> insert row
> of vales into NewMatrix without header. ?
>
> Can anyone please help me ?
> Thanks & Regards,
> -Antony
??? [[alternative HTML version deleted]]
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