Hi friends - I have a simple problem of inserting values in label of a
ggplot2. I have a vector V with two values and want to show them in the
plot.
Here is what I tried - at most get the first entry "28".
R version 3.6.1 (2019-07-05)
Windows 10
BW
Troels
library(ggplot2)
x <- 1:5
y <- x^2
V <- c(28,14)
df <- data.frame(x=x,y=y)
ggplot(df,aes(x=x,y=y))+geom_line()+
annotate("text",x=3,y=20,label=bquote(V ==.(as.vector(V))))
ggplot(df,aes(x=x,y=y))+geom_line()+
annotate("text",x=3,y=20,label=expression(paste("V is
",V)))
ggplot(df,aes(x=x,y=y))+geom_line()+
annotate("text",x=3,y=20,label=bquote(V ==.(V)))
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Hello,
If you form the label with paste before the plot, it can display both
values. Something like
lab <- paste("V = ", paste(V, collapse = ","))
ggplot(df,aes(x=x,y=y)) + geom_line() +
annotate("text", x = 3, y = 20, label = lab)
Hope this helps,
Rui Barradas
?s 14:55 de 16/12/19, Troels Ring escreveu:> Hi friends - I have a simple problem of inserting values in label of a
> ggplot2. I have a vector V with two values and want to show them in the
> plot.
>
> Here is what I tried - at most get the first entry "28".
>
> R version 3.6.1 (2019-07-05)
>
> Windows 10
>
>
>
> BW
> Troels
>
>
>
> library(ggplot2)
>
> x <- 1:5
>
> y <- x^2
>
> V <- c(28,14)
>
> df <- data.frame(x=x,y=y)
>
> ggplot(df,aes(x=x,y=y))+geom_line()+
>
> annotate("text",x=3,y=20,label=bquote(V ==.(as.vector(V))))
>
>
>
>
>
>
>
> ggplot(df,aes(x=x,y=y))+geom_line()+
>
> annotate("text",x=3,y=20,label=expression(paste("V is
",V)))
>
>
>
>
>
> ggplot(df,aes(x=x,y=y))+geom_line()+
>
> annotate("text",x=3,y=20,label=bquote(V ==.(V)))
>
>
> This email has been scanned by BullGuard antivirus protection.
> For more info visit www.bullguard.com
>
<http://www.bullguard.com/tracking.aspx?affiliate=bullguard&buyaffiliate=smt
> p&url=/>
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at 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.
>
Another way:
expr <- substitute(V == x, list(x = as.list(V)))
ggplot(df, aes(x, y)) + geom_line() +
annotate("text", x = 3, y = 20,
label = deparse(expr), parse = TRUE)
Or this one (nothing to do with your use case, it's an example of plotmath):
v <- paste("atop(", paste0("'V ='*alpha[", V,
"]", collapse = ","), ")")
ggplot(df, aes(x, y)) + geom_line() +
annotate("text", x = 3, y = 20,
label = v, parse = TRUE)
More idiomatic? At least it allows for the use of plotmath.
Hope this helps,
Rui Barradas
?s 17:27 de 16/12/19, Rui Barradas escreveu:> Hello,
>
> If you form the label with paste before the plot, it can display both
> values. Something like
>
>
> lab <- paste("V = ", paste(V, collapse = ","))
>
> ggplot(df,aes(x=x,y=y)) + geom_line() +
> ? annotate("text", x = 3, y = 20, label = lab)
>
>
> Hope this helps,
>
> Rui Barradas
>
> ?s 14:55 de 16/12/19, Troels Ring escreveu:
>> Hi friends - I have a simple problem of inserting values in label of a
>> ggplot2. I have a vector V with two values and want to show them in the
>> plot.
>>
>> Here is what I tried -? at most get the first entry "28".
>>
>> R version 3.6.1 (2019-07-05)
>>
>> Windows 10
>>
>>
>> BW
>> Troels
>>
>>
>> library(ggplot2)
>>
>> x <- 1:5
>>
>> y <- x^2
>>
>> V <- c(28,14)
>>
>> df <- data.frame(x=x,y=y)
>>
>> ggplot(df,aes(x=x,y=y))+geom_line()+
>>
>> ???? annotate("text",x=3,y=20,label=bquote(V
==.(as.vector(V))))
>>
>>
>>
>>
>> ggplot(df,aes(x=x,y=y))+geom_line()+
>>
>> ???? annotate("text",x=3,y=20,label=expression(paste("V
is ",V)))
>>
>>
>>
>> ggplot(df,aes(x=x,y=y))+geom_line()+
>>
>> ???? annotate("text",x=3,y=20,label=bquote(V ==.(V)))
>>
>>
>> This email has been scanned by BullGuard antivirus protection.
>> For more info visit www.bullguard.com
>>
<http://www.bullguard.com/tracking.aspx?affiliate=bullguard&buyaffiliate=smt
>>
>> p&url=/>
>>
>> ????[[alternative HTML version deleted]]
>>
>> ______________________________________________
>> R-help at 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 at 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.
Thanks a lot for the interesting possibilities - R is wonderful!
BW
Troels
-----Oprindelig meddelelse-----
Fra: Rui Barradas <ruipbarradas at sapo.pt>
Sendt: 16. december 2019 19:31
Til: Troels Ring <tring at gvdnet.dk>; r-help mailing list <r-help at
r-project.org>
Emne: Re: [R] variable in annotation, ggplot2
Another way:
expr <- substitute(V == x, list(x = as.list(V))) ggplot(df, aes(x, y)) +
geom_line() +
annotate("text", x = 3, y = 20,
label = deparse(expr), parse = TRUE)
Or this one (nothing to do with your use case, it's an example of plotmath):
v <- paste("atop(", paste0("'V ='*alpha[", V,
"]", collapse = ","), ")") ggplot(df, aes(x, y)) +
geom_line() +
annotate("text", x = 3, y = 20,
label = v, parse = TRUE)
More idiomatic? At least it allows for the use of plotmath.
Hope this helps,
Rui Barradas
?s 17:27 de 16/12/19, Rui Barradas escreveu:> Hello,
>
> If you form the label with paste before the plot, it can display both
> values. Something like
>
>
> lab <- paste("V = ", paste(V, collapse = ","))
>
> ggplot(df,aes(x=x,y=y)) + geom_line() +
> annotate("text", x = 3, y = 20, label = lab)
>
>
> Hope this helps,
>
> Rui Barradas
>
> ?s 14:55 de 16/12/19, Troels Ring escreveu:
>> Hi friends - I have a simple problem of inserting values in label of
>> a ggplot2. I have a vector V with two values and want to show them in
>> the plot.
>>
>> Here is what I tried - at most get the first entry "28".
>>
>> R version 3.6.1 (2019-07-05)
>>
>> Windows 10
>>
>>
>> BW
>> Troels
>>
>>
>> library(ggplot2)
>>
>> x <- 1:5
>>
>> y <- x^2
>>
>> V <- c(28,14)
>>
>> df <- data.frame(x=x,y=y)
>>
>> ggplot(df,aes(x=x,y=y))+geom_line()+
>>
>> annotate("text",x=3,y=20,label=bquote(V
==.(as.vector(V))))
>>
>>
>>
>>
>> ggplot(df,aes(x=x,y=y))+geom_line()+
>>
>> annotate("text",x=3,y=20,label=expression(paste("V
is ",V)))
>>
>>
>>
>> ggplot(df,aes(x=x,y=y))+geom_line()+
>>
>> annotate("text",x=3,y=20,label=bquote(V ==.(V)))
>>
>>
>> This email has been scanned by BullGuard antivirus protection.
>> For more info visit www.bullguard.com
>>
<http://www.bullguard.com/tracking.aspx?affiliate=bullguard&buyaffili
>> ate=smt
>>
>> p&url=/>
>>
>> [[alternative HTML version deleted]]
>>
>> ______________________________________________
>> R-help at 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 at 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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