Re: [R] Passing variable name
There are endless ways to do what you want, Seyit. If you wish to remain in
base R, using the names function on the left-hand side changes the names as in:
names(something) <- c("new", "names")
And in general, you may want to learn how to use an alternate set of methods
that work well with ggplot in the tidyverse such as select() that lets you
choose which columns of a data.frame (or tibble) to keep while optionally
renaming them, and the rename() function and the mutate() function and ways to
combine them to do lots of work. They also allow you to not use within() the
way you are doing.
It is amusing you want names like V1. Indeed some R functions default to such
names.
-Original Message-
From: R-help On Behalf Of Seyit Ali KAYIS
Sent: Monday, December 28, 2020 1:32 PM
To: 'Bert Gunter' ; 'R-help' ;
erdogancev...@gmail.com; drjimle...@gmail.com
Subject: Re: [R] Passing variable name
Hi Bert,
Thanks a lot for informing me regarding the html format of my email.
I also would like to thank to Erdogan CEVHER and Jim LEMON for their kind
reply/suggestions. Yes I am aware of names function in R which is not the one I
am looking for in here. Let me try to explain in another way.
The below part includes data generation, making cross-tab, Chi-Squared test and
bar plot through ggplot.
###
MyData<-data.frame("Gender" = c("F", "F", "F", "F", "M", "M", "M", "M", "M",
"M", "F", "F"),
"Hand" = c("R", "R", "L", "L", "R", "R", "L", "L", "R",
"R", "L", "L"),
"Gr" = c(1, 2, 1, 2, 1, 2, 1, 2, 1, 2,
1, 2) )
MyData <- within(MyData, {
Gender <- factor(Gender)
Hand <- factor(Hand)
Gr <- factor(Gr)
}
)
str(MyData)
library(ggplot2)
# Part 1 #
MyT <- table(MyData$Gender, MyData$Hand)
print(MyT)
MyChi<- chisq.test(MyT)
print(MyChi)
dMyT <- data.frame(as.table(as.matrix(table(MyData$Gender, MyData$Hand, useNA =
"ifany"
name2<- c("Gender", "Hand", "Frequency")
names(dMyT) <- name2
ggplot(data = na.omit(dMyT), aes(fill=Hand, y=Frequency, x=Gender)) +
geom_bar(position="dodge", stat="identity")
###
Let’s say I have hundreds of variables (e.g SNP data). By using above codes I
can perform what I need. However , I need to copy/paste variable name(s) for
making table, Chi-Square test, and ggplot. This increase the chance of
incorrectly copying/pasting variable name(s). What I can do is define variable
name(s) earlier and pass that names to making table, Chi-Square test, and
ggplot part. I believe there is a way to do it. I tried “paste” function (as
below), but it did not work either.
Any comment/help is deeply appreciated.
Kind Regards
Seyit Ali
##
V1 <- "Gender"
V2 <- "Hand"
MyT2 <- table(paste('MyData$',V1), paste('MyData$',V2) )
print(MyT)
MyChi<- chisq.test(MyT)
print(MyChi)
dMyT <- data.frame(as.table(as.matrix(table(paste('MyData$',V1),
paste('MyData$',V2), useNA = "ifany"
name2<- c(V1, V2, "Frequency")
names(dMyT) <- name2
ggplot(data = na.omit(dMyT), aes(fill=V2, y=Frequency, x=V1)) +
geom_bar(position="dodge", stat="identity")
#
From: Bert Gunter [mailto:bgunter.4...@gmail.com]
Sent: Monday, 28 December 2020 12:08 AM
To: seyitali.ka...@ibu.edu.tr
Cc: R-help
Subject: Re: [R] Passing variable name
This is a *plain text* list. As you can see from the included text that I
received, the HTML version that you sent was somewhat mangled by the server. I
do not know whether or not enough got through for you to get a helpful reply,
but if not, re-send *to the list, not me* in *plain text*.
Bert Gunter
"The trouble with having an open mind is that people keep coming along and
sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
On Sun, Dec 27, 2020 at 12:25 PM Seyit Ali KAYIS mailto:seyitali.ka...@ibu.edu.tr> > wrote:
Dear R users,
�
I have a data frame as below. In part 1, I have created a table for Gender and
Hand, performed Chi-Square test and made graph using ggplot.
�
I want to replace the original variable names (Gender and Hand) with V1 and V2
and to be able to perform those thin
Re: [R] Passing variable name
Hello,
In my previous post I had meant something like the following.
The two important parts are the use of `[[` in table() and the use of
get() in the ggplot call.
MyData<-data.frame("Gender" = c("F", "F", "F", "F", "M", "M", "M", "M",
"M", "M", "F", "F"),
"Hand" = c("R", "R", "L", "L", "R", "R", "L", "L",
"R", "R", "L", "L"),
"Gr" = c(1, 2, 1, 2, 1, 2, 1, 2, 1,
2, 1, 2) )
MyData <- within(MyData, {
Gender <- factor(Gender)
Hand <- factor(Hand)
Gr <- factor(Gr)
})
V1 <- "Gender"
V2 <- "Hand"
MyT2 <- table(MyData[[V1]], MyData[[V2]])
MyT2
MyChi <- chisq.test(MyT2)
MyChi
name2 <- c(V1, V2, "Frequency")
dMyT <- as.data.frame(MyT2)
names(dMyT) <- name2
library(ggplot2)
ggplot(data = na.omit(dMyT), aes(get(V1), Frequency, fill = get(V2))) +
geom_bar(position = "dodge", stat = "identity") +
labs(x = V1, fill = V2)
Is this what you want?
Hope this helps,
Rui Barradas
Às 18:31 de 28/12/20, Seyit Ali KAYIS escreveu:
Hi Bert,
Thanks a lot for informing me regarding the html format of my email.
I also would like to thank to Erdogan CEVHER and Jim LEMON for their kind
reply/suggestions. Yes I am aware of names function in R which is not the one I
am looking for in here. Let me try to explain in another way.
The below part includes data generation, making cross-tab, Chi-Squared test and
bar plot through ggplot.
###
MyData<-data.frame("Gender" = c("F", "F", "F", "F", "M", "M", "M", "M", "M", "M",
"F", "F"),
"Hand" = c("R", "R", "L", "L", "R", "R", "L", "L", "R", "R",
"L", "L"),
"Gr" = c(1, 2, 1, 2, 1, 2, 1, 2, 1, 2,
1, 2) )
MyData <- within(MyData, {
Gender <- factor(Gender)
Hand <- factor(Hand)
Gr <- factor(Gr)
}
)
str(MyData)
library(ggplot2)
# Part 1 #
MyT <- table(MyData$Gender, MyData$Hand)
print(MyT)
MyChi<- chisq.test(MyT)
print(MyChi)
dMyT <- data.frame(as.table(as.matrix(table(MyData$Gender, MyData$Hand, useNA =
"ifany"
name2<- c("Gender", "Hand", "Frequency")
names(dMyT) <- name2
ggplot(data = na.omit(dMyT), aes(fill=Hand, y=Frequency, x=Gender)) +
geom_bar(position="dodge", stat="identity")
###
Let’s say I have hundreds of variables (e.g SNP data). By using above codes I
can perform what I need. However , I need to copy/paste variable name(s) for
making table, Chi-Square test, and ggplot. This increase the chance of
incorrectly copying/pasting variable name(s). What I can do is define variable
name(s) earlier and pass that names to making table, Chi-Square test, and
ggplot part. I believe there is a way to do it. I tried “paste” function (as
below), but it did not work either.
Any comment/help is deeply appreciated.
Kind Regards
Seyit Ali
##
V1 <- "Gender"
V2 <- "Hand"
MyT2 <- table(paste('MyData$',V1), paste('MyData$',V2) )
print(MyT)
MyChi<- chisq.test(MyT)
print(MyChi)
dMyT <- data.frame(as.table(as.matrix(table(paste('MyData$',V1), paste('MyData$',V2),
useNA = "ifany"
name2<- c(V1, V2, "Frequency")
names(dMyT) <- name2
ggplot(data = na.omit(dMyT), aes(fill=V2, y=Frequency, x=V1)) +
geom_bar(position="dodge", stat="identity")
#
From: Bert Gunter [mailto:bgunter.4...@gmail.com]
Sent: Monday, 28 December 2020 12:08 AM
To: seyitali.ka...@ibu.edu.tr
Cc: R-help
Subject: Re: [R] Passing variable name
This is a *plain text* list. As you can see from the included text that I
received, the HTML version that you sent was somewhat mangled by the server. I
do not know whether or not enough got through for you to get a helpful reply,
but if not, re-send *to the list, not me* in *plain text*.
Bert Gunter
"The trouble with having an open mind is that people keep coming along and sticking
things into it."
--
Re: [R] Passing variable name
Hi Bert,
Thanks a lot for informing me regarding the html format of my email.
I also would like to thank to Erdogan CEVHER and Jim LEMON for their kind
reply/suggestions. Yes I am aware of names function in R which is not the one I
am looking for in here. Let me try to explain in another way.
The below part includes data generation, making cross-tab, Chi-Squared test and
bar plot through ggplot.
###
MyData<-data.frame("Gender" = c("F", "F", "F", "F", "M", "M", "M", "M", "M",
"M", "F", "F"),
"Hand" = c("R", "R", "L", "L", "R", "R", "L", "L", "R",
"R", "L", "L"),
"Gr" = c(1, 2, 1, 2, 1, 2, 1, 2, 1, 2,
1, 2) )
MyData <- within(MyData, {
Gender <- factor(Gender)
Hand <- factor(Hand)
Gr <- factor(Gr)
}
)
str(MyData)
library(ggplot2)
# Part 1 #
MyT <- table(MyData$Gender, MyData$Hand)
print(MyT)
MyChi<- chisq.test(MyT)
print(MyChi)
dMyT <- data.frame(as.table(as.matrix(table(MyData$Gender, MyData$Hand, useNA =
"ifany"
name2<- c("Gender", "Hand", "Frequency")
names(dMyT) <- name2
ggplot(data = na.omit(dMyT), aes(fill=Hand, y=Frequency, x=Gender)) +
geom_bar(position="dodge", stat="identity")
###
Let’s say I have hundreds of variables (e.g SNP data). By using above codes I
can perform what I need. However , I need to copy/paste variable name(s) for
making table, Chi-Square test, and ggplot. This increase the chance of
incorrectly copying/pasting variable name(s). What I can do is define variable
name(s) earlier and pass that names to making table, Chi-Square test, and
ggplot part. I believe there is a way to do it. I tried “paste” function (as
below), but it did not work either.
Any comment/help is deeply appreciated.
Kind Regards
Seyit Ali
##
V1 <- "Gender"
V2 <- "Hand"
MyT2 <- table(paste('MyData$',V1), paste('MyData$',V2) )
print(MyT)
MyChi<- chisq.test(MyT)
print(MyChi)
dMyT <- data.frame(as.table(as.matrix(table(paste('MyData$',V1),
paste('MyData$',V2), useNA = "ifany"
name2<- c(V1, V2, "Frequency")
names(dMyT) <- name2
ggplot(data = na.omit(dMyT), aes(fill=V2, y=Frequency, x=V1)) +
geom_bar(position="dodge", stat="identity")
#
From: Bert Gunter [mailto:bgunter.4...@gmail.com]
Sent: Monday, 28 December 2020 12:08 AM
To: seyitali.ka...@ibu.edu.tr
Cc: R-help
Subject: Re: [R] Passing variable name
This is a *plain text* list. As you can see from the included text that I
received, the HTML version that you sent was somewhat mangled by the server. I
do not know whether or not enough got through for you to get a helpful reply,
but if not, re-send *to the list, not me* in *plain text*.
Bert Gunter
"The trouble with having an open mind is that people keep coming along and
sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
On Sun, Dec 27, 2020 at 12:25 PM Seyit Ali KAYIS mailto:seyitali.ka...@ibu.edu.tr> > wrote:
Dear R users,
�
I have a data frame as below. In part 1, I have created a table for Gender and
Hand, performed Chi-Square test and made graph using ggplot.
�
I want to replace the original variable names (Gender and Hand) with V1 and V2
and to be able to perform those things again as in #part 2. Is there a way to
be able to replace the original names?
�
Any help is deeply appreciated
�
Kind Regards
�
Seyit Ali
�
#
�
MyData<-data.frame("Gender" = c("F", "F","F","F",
"M", "M", "M", "M", "M", "M", "F",
"F"),
"Hand" = c("R", "R","L","L",
"R","R","L", "L","R","R",
"L","L"),
"Gr" = c(1, 2, 1, 2, 1,
Re: [R] Passing variable name
Hello,
Or maybe V1 and V2 are variables that hold column names?
If so see thess StackOverflow posts [1], [2]. The trick is to use [[,
not $ to extractthe columns.
V1 <- "Gender"
V2 <- "Hand"
MyT2 <- table(MyData[[V1]], MyData[[V2]])
[1]:
https://stackoverflow.com/questions/1886/dynamically-select-data-frame-columns-using-and-a-vector-of-column-names
[2]:
https://stackoverflow.com/questions/1169456/the-difference-between-bracket-and-double-bracket-for-accessing-the-el
Hope this helps,
Rui Barradas
Às 21:48 de 27/12/20, Jim Lemon escreveu:
Sorry, Bert, I also forgot to copy to the list.
Hi Seyet Ali,
If you have created the data frame, you probably know that "Gender",
"Hand" and "Gr" are the names of the vectors of values that are joined
in the data frame "MyData". You now wish to change those names. I
don't know why you would change the names to obscure ones like "V1",
but I suggest a look at the "names" function. The answer to your
question should now be clear to you.
Jim
On Mon, Dec 28, 2020 at 8:47 AM Jim Lemon wrote:
Hi Seyet Ali,
If you have created the data frame, you probably know that "Gender",
"Hand" and "Gr" are the names of the vectors of values that are joined
in the data frame "MyData". You now wish to change those names. I
don't know why you would change the names to obscure ones like "V1",
but I suggest a look at the "names" function. The answer to your
question should now be clear to you.
Jim
On Mon, Dec 28, 2020 at 7:25 AM Seyit Ali KAYIS
wrote:
Dear R users,
�
I have a data frame as below. In part 1, I have created a table for Gender and
Hand, performed Chi-Square test and made graph using ggplot.
�
I want to replace the original variable names (Gender and Hand) with V1 and V2
and to be able to perform those things again as in #part 2. Is there a way to
be able to replace the original names?
�
Any help is deeply appreciated
�
Kind Regards
�
Seyit Ali
�
#
�
MyData<-data.frame("Gender" = c("F", "F","F","F","M", "M", "M", "M",
"M", "M", "F","F"),
"Hand" = c("R", "R","L","L","R","R","L",
"L","R","R","L","L"),
"Gr" = c(1, 2, 1, 2, 1,
2, 1, 2, 1, 2, 1,
2) )
MyData <- within(MyData, {
Gender <- factor(Gender)
Hand <- factor(Hand)
Gr <- factor(Gr)
}
)
�
str(MyData)
�
library(ggplot2)
�
# Part 1 #
�
MyT <- table(MyData$Gender, MyData$Hand)
print(MyT)
�
MyChi<- chisq.test(MyT)
print(MyChi)
dMyT <- data.frame(as.table(as.matrix(table(MyData$Gender, MyData$Hand, useNA =
"ifany"
name2<- c("Gender", "Hand", "Frequency")
names(dMyT) <- name2
�
ggplot(data = na.omit(dMyT), aes(fill=Hand, y=Frequency, x=Gender)) +
geom_bar(position="dodge", stat="identity")
�
# Part 2
�
# I want to be able to pass Gender and Hand as V1 and V2 , respectively to
# table, Chi-Square test and ggplot
�
V1 <- "Gender"
V2 <- "Hand"
�
MyT2 <- table(MyData$V1, MyData$V2)
�
print(MyT)
�
MyChi<- chisq.test(MyT)
print(MyChi)
dMyT <- data.frame(as.table(as.matrix(table(MyData$V1, MyData$V2, useNA =
"ifany"
name2<- c(V1, V2, "Frequency")
names(dMyT) <- name2
�
ggplot(data = na.omit(dMyT), aes(fill=V2, y=Frequency, x=V1)) +
geom_bar(position="dodge", stat="identity")
�
�
�
�
Dr. Seyit Ali KAYIS
Bolu Abant Izzet Baysal University, Faculty of Medicine
Department of Biostatistics and Medical Informatics
Bolu, Turkey
s_a_ka...@yahoo.com,
s_a_ka...@hotmail.com
Tel: +90 374 254 30 32 Mobile: +90 535 587 1139
Greetings from Bolu, Turkey
--
�
[[alternative HTML version deleted]]
__
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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.
__
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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.
__
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Re: [R] Passing variable name
Sorry, Bert, I also forgot to copy to the list.
Hi Seyet Ali,
If you have created the data frame, you probably know that "Gender",
"Hand" and "Gr" are the names of the vectors of values that are joined
in the data frame "MyData". You now wish to change those names. I
don't know why you would change the names to obscure ones like "V1",
but I suggest a look at the "names" function. The answer to your
question should now be clear to you.
Jim
On Mon, Dec 28, 2020 at 8:47 AM Jim Lemon wrote:
>
> Hi Seyet Ali,
> If you have created the data frame, you probably know that "Gender",
> "Hand" and "Gr" are the names of the vectors of values that are joined
> in the data frame "MyData". You now wish to change those names. I
> don't know why you would change the names to obscure ones like "V1",
> but I suggest a look at the "names" function. The answer to your
> question should now be clear to you.
>
> Jim
>
> On Mon, Dec 28, 2020 at 7:25 AM Seyit Ali KAYIS
> wrote:
> >
> > Dear R users,
> >
> > �
> >
> > I have a data frame as below. In part 1, I have created a table for Gender
> > and Hand, performed Chi-Square test and made graph using ggplot.
> >
> > �
> >
> > I want to replace the original variable names (Gender and Hand) with V1 and
> > V2 and to be able to perform those things again as in #part 2. Is there a
> > way to be able to replace the original names?
> >
> > �
> >
> > Any help is deeply appreciated
> >
> > �
> >
> > Kind Regards
> >
> > �
> >
> > Seyit Ali
> >
> > �
> >
> > #
> >
> > �
> >
> > MyData<-data.frame("Gender" = c("F", "F","F","F",
> > "M", "M", "M", "M", "M", "M", "F",
> > "F"),
> >
> >"Hand" = c("R", "R","L","L",
> > "R","R","L", "L","R","R",
> >"L","L"),
> >
> >"Gr" = c(1, 2, 1, 2,
> > 1, 2, 1, 2, 1, 2,
> > 1, 2) )
> >
> >
> >
> > MyData <- within(MyData, {
> >
> > Gender <- factor(Gender)
> >
> > Hand <- factor(Hand)
> >
> > Gr <- factor(Gr)
> >
> > }
> >
> > )
> >
> > �
> >
> > str(MyData)
> >
> > �
> >
> > library(ggplot2)
> >
> > �
> >
> > # Part 1 #
> >
> > �
> >
> > MyT <- table(MyData$Gender, MyData$Hand)
> >
> > print(MyT)
> >
> > �
> >
> > MyChi<- chisq.test(MyT)
> >
> > print(MyChi)
> >
> > dMyT <- data.frame(as.table(as.matrix(table(MyData$Gender, MyData$Hand,
> > useNA = "ifany"
> >
> > name2<- c("Gender", "Hand", "Frequency")
> >
> > names(dMyT) <- name2
> >
> > �
> >
> > ggplot(data = na.omit(dMyT), aes(fill=Hand, y=Frequency, x=Gender)) +
> >
> > geom_bar(position="dodge", stat="identity")
> >
> > �
> >
> > # Part 2
> >
> > �
> >
> > # I want to be able to pass Gender and Hand as V1 and V2 , respectively to
> >
> > # table, Chi-Square test and ggplot
> >
> > �
> >
> > V1 <- "Gender"
> >
> > V2 <- "Hand"
> >
> > �
> >
> > MyT2 <- table(MyData$V1, MyData$V2)
> >
> > �
> >
> > print(MyT)
> >
> > �
> >
> > MyChi<- chisq.test(MyT)
> >
> > print(MyChi)
> >
> > dMyT <- data.frame(as.table(as.matrix(table(MyData$V1, MyData$V2, useNA =
> > "ifany"
> >
> > name2<- c(V1, V2, "Frequency")
> >
> > names(dMyT) <- name2
> >
> > �
> >
> > ggplot(data = na.omit(dMyT), aes(fill=V2, y=Frequency, x=V1)) +
> >
> > geom_bar(position="dodge", stat="identity")
> >
> > �
> >
> > �
> >
> > �
> >
> > �
> >
> >
> >
> > Dr. Seyit Ali KAYIS
> >
> > Bolu Abant Izzet Baysal University, Faculty of Medicine
> >
> > Department of Biostatistics and Medical Informatics
> >
> > Bolu, Turkey
> >
> >
> >
> > s_a_ka...@yahoo.com,
> > s_a_ka...@hotmail.com
> >
> > Tel: +90 374 254 30 32 Mobile: +90 535 587 1139
> >
> >
> >
> > Greetings from Bolu, Turkey
> >
> > --
> >
> > �
> >
> >
> > [[alternative HTML version deleted]]
> >
> > __
> > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
> > 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.
__
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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.
Re: [R] Passing variable name
This is a *plain text* list. As you can see from the included text that I
received, the HTML version that you sent was somewhat mangled by the
server. I do not know whether or not enough got through for you to get a
helpful reply, but if not, re-send *to the list, not me* in *plain text*.
Bert Gunter
"The trouble with having an open mind is that people keep coming along and
sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
On Sun, Dec 27, 2020 at 12:25 PM Seyit Ali KAYIS
wrote:
> Dear R users,
>
> �
>
> I have a data frame as below. In part 1, I have created a table for Gender
> and Hand, performed Chi-Square test and made graph using ggplot.
>
> �
>
> I want to replace the original variable names (Gender and Hand) with V1
> and V2 and to be able to perform those things again as in #part 2. Is there
> a way to be able to replace the original names?
>
> �
>
> Any help is deeply appreciated
>
> �
>
> Kind Regards
>
> �
>
> Seyit Ali
>
> �
>
>
> #
>
> �
>
> MyData<-data.frame("Gender" = c("F", "F","F","F",
> "M", "M", "M", "M", "M", "M", "F",
> "F"),
>
>"Hand" = c("R", "R","L","L",
> "R","R","L", "L","R",
> "R","L","L"),
>
>"Gr" = c(1, 2, 1, 2,
> 1, 2, 1, 2, 1, 2,
>1, 2) )
>
>
>
> MyData <- within(MyData, {
>
> Gender <- factor(Gender)
>
> Hand <- factor(Hand)
>
> Gr <- factor(Gr)
>
> }
>
> )
>
> �
>
> str(MyData)
>
> �
>
> library(ggplot2)
>
> �
>
> # Part 1 #
>
> �
>
> MyT <- table(MyData$Gender, MyData$Hand)
>
> print(MyT)
>
> �
>
> MyChi<- chisq.test(MyT)
>
> print(MyChi)
>
> dMyT <- data.frame(as.table(as.matrix(table(MyData$Gender, MyData$Hand,
> useNA = "ifany"
>
> name2<- c("Gender", "Hand", "Frequency")
>
>
> names(dMyT) <- name2
>
> �
>
> ggplot(data = na.omit(dMyT), aes(fill=Hand, y=Frequency, x=Gender)) +
>
> geom_bar(position="dodge", stat="identity")
>
> �
>
> # Part 2
>
> �
>
> # I want to be able to pass Gender and Hand as V1 and V2 , respectively to
>
> # table, Chi-Square test and ggplot
>
> �
>
> V1 <- "Gender"
>
> V2 <- "Hand"
>
> �
>
> MyT2 <- table(MyData$V1, MyData$V2)
>
> �
>
> print(MyT)
>
> �
>
> MyChi<- chisq.test(MyT)
>
> print(MyChi)
>
> dMyT <- data.frame(as.table(as.matrix(table(MyData$V1, MyData$V2, useNA =
> "ifany"
>
> name2<- c(V1, V2, "Frequency")
>
> names(dMyT) <- name2
>
> �
>
> ggplot(data = na.omit(dMyT), aes(fill=V2, y=Frequency, x=V1)) +
>
> geom_bar(position="dodge", stat="identity")
>
> �
>
> �
>
> �
>
> �
>
>
>
> Dr. Seyit Ali KAYIS
>
> Bolu Abant Izzet Baysal University, Faculty of Medicine
>
> Department of Biostatistics and Medical Informatics
>
> Bolu, Turkey
>
>
>
> s_a_ka...@yahoo.com, s_a_ka...@hotmail.com> s_a_ka...@hotmail.com
>
> Tel: +90 374 254 30 32 Mobile: +90 535 587 1139
>
>
>
> Greetings from Bolu, Turkey
>
> --
>
> �
>
>
> [[alternative HTML version deleted]]
>
> __
> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
> 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.
>
[[alternative HTML version deleted]]
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[R] Passing variable name
Dear R users,
�
I have a data frame as below. In part 1, I have created a table for Gender and
Hand, performed Chi-Square test and made graph using ggplot.
�
I want to replace the original variable names (Gender and Hand) with V1 and V2
and to be able to perform those things again as in #part 2. Is there a way to
be able to replace the original names?
�
Any help is deeply appreciated
�
Kind Regards
�
Seyit Ali
�
#
�
MyData<-data.frame("Gender" = c("F", "F","F","F",
"M", "M", "M", "M", "M", "M", "F",
"F"),
"Hand" = c("R", "R","L","L",
"R","R","L", "L","R","R",
"L","L"),
"Gr" = c(1, 2, 1, 2, 1,
2, 1, 2, 1, 2, 1,
2) )
MyData <- within(MyData, {
Gender <- factor(Gender)
Hand <- factor(Hand)
Gr <- factor(Gr)
}
)
�
str(MyData)
�
library(ggplot2)
�
# Part 1 #
�
MyT <- table(MyData$Gender, MyData$Hand)
print(MyT)
�
MyChi<- chisq.test(MyT)
print(MyChi)
dMyT <- data.frame(as.table(as.matrix(table(MyData$Gender, MyData$Hand, useNA =
"ifany"
name2<- c("Gender", "Hand", "Frequency")
names(dMyT) <- name2
�
ggplot(data = na.omit(dMyT), aes(fill=Hand, y=Frequency, x=Gender)) +
geom_bar(position="dodge", stat="identity")
�
# Part 2
�
# I want to be able to pass Gender and Hand as V1 and V2 , respectively to
# table, Chi-Square test and ggplot
�
V1 <- "Gender"
V2 <- "Hand"
�
MyT2 <- table(MyData$V1, MyData$V2)
�
print(MyT)
�
MyChi<- chisq.test(MyT)
print(MyChi)
dMyT <- data.frame(as.table(as.matrix(table(MyData$V1, MyData$V2, useNA =
"ifany"
name2<- c(V1, V2, "Frequency")
names(dMyT) <- name2
�
ggplot(data = na.omit(dMyT), aes(fill=V2, y=Frequency, x=V1)) +
geom_bar(position="dodge", stat="identity")
�
�
�
�
Dr. Seyit Ali KAYIS
Bolu Abant Izzet Baysal University, Faculty of Medicine
Department of Biostatistics and Medical Informatics
Bolu, Turkey
s_a_ka...@yahoo.com,
s_a_ka...@hotmail.com
Tel: +90 374 254 30 32 Mobile: +90 535 587 1139
Greetings from Bolu, Turkey
--
�
[[alternative HTML version deleted]]
__
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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.
