[R] data.frame() creates list?

[Bill.Venables at csiro.au]

Data frames *are* lists.  They just have a guaranteed structure and a
different class, but they may be used interchangably with lists nearly
everywhere.

Try

class(ByEBNum)

for a more relevant check of what kind of object you have.



Bill Venables
http://www.cmis.csiro.au/bill.venables/ 


-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On Behalf Of Farley, Robert
Sent: Thursday, 21 August 2008 10:34 AM
To: r-help at r-project.org
Subject: [R] data.frame() creates list?

I obviously don't know what I'm doing.  I want to create "ByEBNum" as a
data frame, but it comes out as a list.  How do I make it a data frame?

 

 

> EBNumStn <- c(673.65,     800, 1000, 1000,  800,  700,  600, 500, 400,
200,  50, 50 )

> ByEBNum <- data.frame(c(1:12),EBNumStn)

> typeof(EBNumStn)

[1] "double"

> typeof(c(1:12))

[1] "integer"

> typeof(ByEBNum)

[1] "list"

> ByEBNum

   c.1.12. EBNumStn

1        1   673.65

2        2   800.00

3        3  1000.00

4        4  1000.00

5        5   800.00

6        6   700.00

7        7   600.00

8        8   500.00

9        9   400.00

10      10   200.00

11      11    50.00

12      12    50.00

> 

 

>sessionInfo() 

R version 2.7.1 (2008-06-23) 

i386-pc-mingw32 

 

locale:

LC_COLLATE=English_United States.1252;LC_CTYPE=English_United
States.1252;LC_MONETARY=English_United
States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252

 

attached base packages:

[1] graphics  grDevices utils     datasets  stats     methods   base


 

other attached packages:

[1] survey_3.8     fortunes_1.3-5 moonsun_0.1    prettyR_1.3-2
foreign_0.8-28

> 

 

 

 

 

 

Robert Farley

Metro

1 Gateway Plaza

Mail Stop 99-23-7

Los Angeles, CA 90012-2952

Voice: (213)922-2532

Fax:    (213)922-2868

www.Metro.net 

 

 


	[[alternative HTML version deleted]]

______________________________________________
R-help at r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.