Removing display of row names from data frame
I am creating a dataframe using this code:
df <- data.frame(dbGetQuery(con, paste('select * from test')))
Which results in this:
UID BuildingCode AccessTime
1 123456 BUILD-1 2014-06-16 07:00:00
2 364952 BUILD-2 2014-06-15 08:00:00
3 95865 BUILD-1 2014-06-06 09:50:00
I am then trying to remove the row names (1, 2, 3, etc) as suggested here by using this code:
rownames(df) <- NULL
But then when I print out df it still displays the row names. Is there a way to not include the row names when creating the data frame? I found a suggestion about row.name = FALSE but when I tried it I just got errors (I might have placed it in the wrong place).
EDIT: What I want to do is convert the dateframe to a HTML table and I don't want the row name to be present in the table.
Answer
You have successfully removed the row names. The print.data.frame method just shows the row numbers if no row names are present.
df1 <- data.frame(values = rnorm(3), group = letters[1:3],
row.names = paste0("RowName", 1:3))
print(df1)
# values group
#RowName1 -1.469809 a
#RowName2 -1.164943 b
#RowName3 0.899430 c
rownames(df1) <- NULL
print(df1)
# values group
#1 -1.469809 a
#2 -1.164943 b
#3 0.899430 c
You can suppress printing the row names and numbers in print.data.frame with the argument row.names as FALSE.
print(df1, row.names = FALSE)
# values group
# -1.4345829 d
# 0.2182768 e
# -0.2855440 f
Edit: As written in the comments, you want to convert this to HTML. From the xtable and print.xtable documentation, you can see that the argument include.rownames will do the trick.
library("xtable")
print(xtable(df1), type="html", include.rownames = FALSE)
#<!-- html table generated in R 3.1.0 by xtable 1.7-3 package -->
#<!-- Thu Jun 26 12:50:17 2014 -->
#<TABLE border=1>
#<TR> <TH> values </TH> <TH> group </TH> </TR>
#<TR> <TD align="right"> -0.34 </TD> <TD> a </TD> </TR>
#<TR> <TD align="right"> -1.04 </TD> <TD> b </TD> </TR>
#<TR> <TD align="right"> -0.48 </TD> <TD> c </TD> </TR>
#</TABLE>