Add sum line to plot of multiple x values

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Add sum line to plot of multiple x values

Loris Bennett-2
Hi,

Here are my data:

> d
   user files       date
1 alice    18 2013-09-15
2   bob     5 2013-09-15
3 carol    21 2013-09-15
4 alice    22 2013-09-08
5   bob     9 2013-09-08
6 carol    14 2013-09-08
7 alice    26 2013-09-01
8   bob     3 2013-09-01
9 carol    22 2013-09-01

I would like to plot the number of files against date for all users, so
I have:

  library(ggplot2)

  people <- c("alice","bob","carol")
  user <- c(rep(people,3))
  files <- c(18,5,21,22,9,14,26,3,22)
  date <- c(rep("2013-09-15",3),rep("2013-09-08",3),rep("2013-09-01",3))
  d <- data.frame(user=user,files=files,date=date)

  p <- ggplot()
  p <- p + geom_line(data=d,aes(x=date,y=files,group=user,colour=user))

I would now like to add a line to show the total number of files as a
function of date.  I tried

  p <- p + geom_line(data=d,aes(x=date,y=sum(files),group=date),colour='black')

I don't get a black line, but the plot is scaled such that I can see
that sum(file) for all values of 'file', rather than those for each
date, is being used.

I would like to know how to do this correctly, but I would rather be
able to work it out for myself.  However, if I decide, say, that I don't
know exactly what the 'group' argument does, how do I find it out?

?geom_line doesn't have it, although the examples there use it. ?ggplot
doesn't mention it. ?group gives me stuff about formatting text
arguments. ??group only leads me to ?ggplot2::add_group, which also does
not seem to help.

Am I at fault for trying to learn R in an ad hoc manner, to which the
documentation of R does not lend itself, or am I missing something?

Cheers,

Loris

--
This signature is currently under construction.

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Re: Add sum line to plot of multiple x values

PIKAL Petr
Hi

Not extremely clear what do you want to plot. Do you want to add a line which marks total number of files each day regardless of user? Or a total number of files regardless of date coloured by user?

In each case you shall search functions geom_hline or geom_abline

http://stackoverflow.com/questions/13254441/add-a-horizontal-line-to-plot-and-legend-in-ggplot2

ggplot is rather complicated but very flexible

Petr

> -----Original Message-----
> From: R-help [mailto:[hidden email]] On Behalf Of Loris
> Bennett
> Sent: Monday, March 09, 2015 2:56 PM
> To: [hidden email]
> Subject: [R] Add sum line to plot of multiple x values
>
> Hi,
>
> Here are my data:
>
> > d
>    user files       date
> 1 alice    18 2013-09-15
> 2   bob     5 2013-09-15
> 3 carol    21 2013-09-15
> 4 alice    22 2013-09-08
> 5   bob     9 2013-09-08
> 6 carol    14 2013-09-08
> 7 alice    26 2013-09-01
> 8   bob     3 2013-09-01
> 9 carol    22 2013-09-01
>
> I would like to plot the number of files against date for all users, so
> I have:
>
>   library(ggplot2)
>
>   people <- c("alice","bob","carol")
>   user <- c(rep(people,3))
>   files <- c(18,5,21,22,9,14,26,3,22)
>   date <- c(rep("2013-09-15",3),rep("2013-09-08",3),rep("2013-09-
> 01",3))
>   d <- data.frame(user=user,files=files,date=date)
>
>   p <- ggplot()
>   p <- p + geom_line(data=d,aes(x=date,y=files,group=user,colour=user))
>
> I would now like to add a line to show the total number of files as a
> function of date.  I tried
>
>   p <- p +
> geom_line(data=d,aes(x=date,y=sum(files),group=date),colour='black')
>
> I don't get a black line, but the plot is scaled such that I can see
> that sum(file) for all values of 'file', rather than those for each
> date, is being used.
>
> I would like to know how to do this correctly, but I would rather be
> able to work it out for myself.  However, if I decide, say, that I
> don't
> know exactly what the 'group' argument does, how do I find it out?
>
> ?geom_line doesn't have it, although the examples there use it. ?ggplot
> doesn't mention it. ?group gives me stuff about formatting text
> arguments. ??group only leads me to ?ggplot2::add_group, which also
> does
> not seem to help.
>
> Am I at fault for trying to learn R in an ad hoc manner, to which the
> documentation of R does not lend itself, or am I missing something?
>
> Cheers,
>
> Loris
>
> --
> This signature is currently under construction.
>
> ______________________________________________
> [hidden email] 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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If you are not the intended recipient of this e-mail, you are not authorized to use, disseminate, copy or disclose this e-mail in any manner.
The sender of this e-mail shall not be liable for any possible damage caused by modifications of the e-mail or by delay with transfer of the email.

In case that this e-mail forms part of business dealings:
- the sender reserves the right to end negotiations about entering into a contract in any time, for any reason, and without stating any reasoning.
- if the e-mail contains an offer, the recipient is entitled to immediately accept such offer; The sender of this e-mail (offer) excludes any acceptance of the offer on the part of the recipient containing any amendment or variation.
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- the sender of this e-mail informs that he/she is not authorized to enter into any contracts on behalf of the company except for cases in which he/she is expressly authorized to do so in writing, and such authorization or power of attorney is submitted to the recipient or the person represented by the recipient, or the existence of such authorization is known to the recipient of the person represented by the recipient.
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Re: Add sum line to plot of multiple x values

Loris Bennett-2
PIKAL Petr <[hidden email]> writes:

> Hi
>
> Not extremely clear what do you want to plot. Do you want to add a
> line which marks total number of files each day regardless of user? Or
> a total number of files regardless of date coloured by user?

Sorry, I was unclear.  I meant that I would like to plot the following:

1. For each user: the number of files for each date (my code does this)
2. The sum of files of all users for each date (this is what I still
   need)

> In each case you shall search functions geom_hline or geom_abline
>
> http://stackoverflow.com/questions/13254441/add-a-horizontal-line-to-plot-and-legend-in-ggplot2

So I don't want a straight line

> ggplot is rather complicated but very flexible

I don't mind ggplot being complicated, but I find the documentation a
little impenetrable.

Cheers,

Loris


>> -----Original Message-----
>> From: R-help [mailto:[hidden email]] On Behalf Of Loris
>> Bennett
>> Sent: Monday, March 09, 2015 2:56 PM
>> To: [hidden email]
>> Subject: [R] Add sum line to plot of multiple x values
>>
>> Hi,
>>
>> Here are my data:
>>
>> > d
>>    user files       date
>> 1 alice    18 2013-09-15
>> 2   bob     5 2013-09-15
>> 3 carol    21 2013-09-15
>> 4 alice    22 2013-09-08
>> 5   bob     9 2013-09-08
>> 6 carol    14 2013-09-08
>> 7 alice    26 2013-09-01
>> 8   bob     3 2013-09-01
>> 9 carol    22 2013-09-01
>>
>> I would like to plot the number of files against date for all users, so
>> I have:
>>
>>   library(ggplot2)
>>
>>   people <- c("alice","bob","carol")
>>   user <- c(rep(people,3))
>>   files <- c(18,5,21,22,9,14,26,3,22)
>>   date <- c(rep("2013-09-15",3),rep("2013-09-08",3),rep("2013-09-
>> 01",3))
>>   d <- data.frame(user=user,files=files,date=date)
>>
>>   p <- ggplot()
>>   p <- p + geom_line(data=d,aes(x=date,y=files,group=user,colour=user))
>>
>> I would now like to add a line to show the total number of files as a
>> function of date.  I tried
>>
>>   p <- p +
>> geom_line(data=d,aes(x=date,y=sum(files),group=date),colour='black')
>>
>> I don't get a black line, but the plot is scaled such that I can see
>> that sum(file) for all values of 'file', rather than those for each
>> date, is being used.
>>
>> I would like to know how to do this correctly, but I would rather be
>> able to work it out for myself.  However, if I decide, say, that I
>> don't
>> know exactly what the 'group' argument does, how do I find it out?
>>
>> ?geom_line doesn't have it, although the examples there use it. ?ggplot
>> doesn't mention it. ?group gives me stuff about formatting text
>> arguments. ??group only leads me to ?ggplot2::add_group, which also
>> does
>> not seem to help.
>>
>> Am I at fault for trying to learn R in an ad hoc manner, to which the
>> documentation of R does not lend itself, or am I missing something?
>>
>> Cheers,
>>
>> Loris
>>
>> --
>> This signature is currently under construction.
>>
>> ______________________________________________
>> [hidden email] 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.
>
> ________________________________
> Tento e-mail a jakékoliv k němu připojené dokumenty jsou důvěrné a jsou určeny pouze jeho adresátům.
> Jestliže jste obdržel(a) tento e-mail omylem, informujte laskavě neprodleně jeho odesílatele. Obsah tohoto emailu i s přílohami a jeho kopie vymažte ze svého systému.
> Nejste-li zamýšleným adresátem tohoto emailu, nejste oprávněni tento email jakkoliv užívat, rozšiřovat, kopírovat či zveřejňovat.
> Odesílatel e-mailu neodpovídá za eventuální škodu způsobenou modifikacemi či zpožděním přenosu e-mailu.
>
> V případě, že je tento e-mail součástí obchodního jednání:
> - vyhrazuje si odesílatel právo ukončit kdykoliv jednání o uzavření smlouvy, a to z jakéhokoliv důvodu i bez uvedení důvodu.
> - a obsahuje-li nabídku, je adresát oprávněn nabídku bezodkladně přijmout; Odesílatel tohoto e-mailu (nabídky) vylučuje přijetí nabídky ze strany příjemce s dodatkem či odchylkou.
> - trvá odesílatel na tom, že příslušná smlouva je uzavřena teprve výslovným dosažením shody na všech jejích náležitostech.
> - odesílatel tohoto emailu informuje, že není oprávněn uzavírat za společnost žádné smlouvy s výjimkou případů, kdy k tomu byl písemně zmocněn nebo písemně pověřen a takové pověření nebo plná moc byly adresátovi tohoto emailu případně osobě, kterou adresát zastupuje, předloženy nebo jejich existence je adresátovi či osobě jím zastoupené známá.
>
> This e-mail and any documents attached to it may be confidential and are intended only for its intended recipients.
> If you received this e-mail by mistake, please immediately inform its sender. Delete the contents of this e-mail with all attachments and its copies from your system.
> If you are not the intended recipient of this e-mail, you are not authorized to use, disseminate, copy or disclose this e-mail in any manner.
> The sender of this e-mail shall not be liable for any possible damage caused by modifications of the e-mail or by delay with transfer of the email.
>
> In case that this e-mail forms part of business dealings:
> - the sender reserves the right to end negotiations about entering into a contract in any time, for any reason, and without stating any reasoning.
> - if the e-mail contains an offer, the recipient is entitled to immediately accept such offer; The sender of this e-mail (offer) excludes any acceptance of the offer on the part of the recipient containing any amendment or variation.
> - the sender insists on that the respective contract is concluded only upon an express mutual agreement on all its aspects.
> - the sender of this e-mail informs that he/she is not authorized to enter into any contracts on behalf of the company except for cases in which he/she is expressly authorized to do so in writing, and such authorization or power of attorney is submitted to the recipient or the person represented by the recipient, or the existence of such authorization is known to the recipient of the person represented by the recipient.
> ______________________________________________
> [hidden email] 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.

--
Dr. Loris Bennett (Mr.)
ZEDAT, Freie Universität Berlin         Email [hidden email]

______________________________________________
[hidden email] mailing list -- To UNSUBSCRIBE and more, see
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Re: Add sum line to plot of multiple x values

PIKAL Petr
Hi

see inline

> -----Original Message-----
> From: R-help [mailto:[hidden email]] On Behalf Of Loris
> Bennett
> Sent: Monday, March 09, 2015 4:35 PM
> To: [hidden email]
> Subject: Re: [R] Add sum line to plot of multiple x values
>
> PIKAL Petr <[hidden email]> writes:
>
> > Hi
> >
> > Not extremely clear what do you want to plot. Do you want to add a
> > line which marks total number of files each day regardless of user?
> Or
> > a total number of files regardless of date coloured by user?
>
> Sorry, I was unclear.  I meant that I would like to plot the following:
>
> 1. For each user: the number of files for each date (my code does this)
> 2. The sum of files of all users for each date (this is what I still
>    need)
>
> > In each case you shall search functions geom_hline or geom_abline
> >
> > http://stackoverflow.com/questions/13254441/add-a-horizontal-line-to-
> plot-and-legend-in-ggplot2
>
> So I don't want a straight line

but in your code is

>> geom_line(data=d,aes(x=date,y=sum(files),group=date),colour='black')

so you apparently want some sort of line.

anyway, if I do

d.ag<-aggregate(d$files, list(d$date), sum)

I can add

p+geom_point(data=d.ag,aes(x=Group.1,y=x), size=5)

and I get summary points.

If you want lines you can do

p+geom_hline(data=d.ag,aes(yintercept=x, colour=Group.1))

or you can fiddle with geom_segment

>
> > ggplot is rather complicated but very flexible
>
> I don't mind ggplot being complicated, but I find the documentation a
> little impenetrable.

You can find plenty of help when you just try to google on the item searching. Actually this is what I do when the solution is not obvious or requires some hidden instruction.

Cheers
Petr

>
> Cheers,
>
> Loris
>
>
> >> -----Original Message-----
> >> From: R-help [mailto:[hidden email]] On Behalf Of
> Loris
> >> Bennett
> >> Sent: Monday, March 09, 2015 2:56 PM
> >> To: [hidden email]
> >> Subject: [R] Add sum line to plot of multiple x values
> >>
> >> Hi,
> >>
> >> Here are my data:
> >>
> >> > d
> >>    user files       date
> >> 1 alice    18 2013-09-15
> >> 2   bob     5 2013-09-15
> >> 3 carol    21 2013-09-15
> >> 4 alice    22 2013-09-08
> >> 5   bob     9 2013-09-08
> >> 6 carol    14 2013-09-08
> >> 7 alice    26 2013-09-01
> >> 8   bob     3 2013-09-01
> >> 9 carol    22 2013-09-01
> >>
> >> I would like to plot the number of files against date for all users,
> so
> >> I have:
> >>
> >>   library(ggplot2)
> >>
> >>   people <- c("alice","bob","carol")
> >>   user <- c(rep(people,3))
> >>   files <- c(18,5,21,22,9,14,26,3,22)
> >>   date <- c(rep("2013-09-15",3),rep("2013-09-08",3),rep("2013-09-
> >> 01",3))
> >>   d <- data.frame(user=user,files=files,date=date)
> >>
> >>   p <- ggplot()
> >>   p <- p +
> geom_line(data=d,aes(x=date,y=files,group=user,colour=user))
> >>
> >> I would now like to add a line to show the total number of files as
> a
> >> function of date.  I tried
> >>
> >>   p <- p +
> >> geom_line(data=d,aes(x=date,y=sum(files),group=date),colour='black')
> >>
> >> I don't get a black line, but the plot is scaled such that I can see
> >> that sum(file) for all values of 'file', rather than those for each
> >> date, is being used.
> >>
> >> I would like to know how to do this correctly, but I would rather be
> >> able to work it out for myself.  However, if I decide, say, that I
> >> don't
> >> know exactly what the 'group' argument does, how do I find it out?
> >>
> >> ?geom_line doesn't have it, although the examples there use it.
> ?ggplot
> >> doesn't mention it. ?group gives me stuff about formatting text
> >> arguments. ??group only leads me to ?ggplot2::add_group, which also
> >> does
> >> not seem to help.
> >>
> >> Am I at fault for trying to learn R in an ad hoc manner, to which
> the
> >> documentation of R does not lend itself, or am I missing something?
> >>
> >> Cheers,
> >>
> >> Loris
> >>
> >> --
> >> This signature is currently under construction.
> >>
> >> ______________________________________________
> >> [hidden email] 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.
> >
> > ________________________________

________________________________
Tento e-mail a jakékoliv k němu připojené dokumenty jsou důvěrné a jsou určeny pouze jeho adresátům.
Jestliže jste obdržel(a) tento e-mail omylem, informujte laskavě neprodleně jeho odesílatele. Obsah tohoto emailu i s přílohami a jeho kopie vymažte ze svého systému.
Nejste-li zamýšleným adresátem tohoto emailu, nejste oprávněni tento email jakkoliv užívat, rozšiřovat, kopírovat či zveřejňovat.
Odesílatel e-mailu neodpovídá za eventuální škodu způsobenou modifikacemi či zpožděním přenosu e-mailu.

V případě, že je tento e-mail součástí obchodního jednání:
- vyhrazuje si odesílatel právo ukončit kdykoliv jednání o uzavření smlouvy, a to z jakéhokoliv důvodu i bez uvedení důvodu.
- a obsahuje-li nabídku, je adresát oprávněn nabídku bezodkladně přijmout; Odesílatel tohoto e-mailu (nabídky) vylučuje přijetí nabídky ze strany příjemce s dodatkem či odchylkou.
- trvá odesílatel na tom, že příslušná smlouva je uzavřena teprve výslovným dosažením shody na všech jejích náležitostech.
- odesílatel tohoto emailu informuje, že není oprávněn uzavírat za společnost žádné smlouvy s výjimkou případů, kdy k tomu byl písemně zmocněn nebo písemně pověřen a takové pověření nebo plná moc byly adresátovi tohoto emailu případně osobě, kterou adresát zastupuje, předloženy nebo jejich existence je adresátovi či osobě jím zastoupené známá.

This e-mail and any documents attached to it may be confidential and are intended only for its intended recipients.
If you received this e-mail by mistake, please immediately inform its sender. Delete the contents of this e-mail with all attachments and its copies from your system.
If you are not the intended recipient of this e-mail, you are not authorized to use, disseminate, copy or disclose this e-mail in any manner.
The sender of this e-mail shall not be liable for any possible damage caused by modifications of the e-mail or by delay with transfer of the email.

In case that this e-mail forms part of business dealings:
- the sender reserves the right to end negotiations about entering into a contract in any time, for any reason, and without stating any reasoning.
- if the e-mail contains an offer, the recipient is entitled to immediately accept such offer; The sender of this e-mail (offer) excludes any acceptance of the offer on the part of the recipient containing any amendment or variation.
- the sender insists on that the respective contract is concluded only upon an express mutual agreement on all its aspects.
- the sender of this e-mail informs that he/she is not authorized to enter into any contracts on behalf of the company except for cases in which he/she is expressly authorized to do so in writing, and such authorization or power of attorney is submitted to the recipient or the person represented by the recipient, or the existence of such authorization is known to the recipient of the person represented by the recipient.
______________________________________________
[hidden email] 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
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Re: Add sum line to plot of multiple x values

Loris Bennett-2
Hi Petr,

See inline.

PIKAL Petr <[hidden email]> writes:

> Hi
>
> see inline
>
>> -----Original Message-----
>> From: R-help [mailto:[hidden email]] On Behalf Of Loris
>> Bennett
>> Sent: Monday, March 09, 2015 4:35 PM
>> To: [hidden email]
>> Subject: Re: [R] Add sum line to plot of multiple x values
>>
>> PIKAL Petr <[hidden email]> writes:
>>
>> > Hi
>> >
>> > Not extremely clear what do you want to plot. Do you want to add a
>> > line which marks total number of files each day regardless of user?
>> Or
>> > a total number of files regardless of date coloured by user?
>>
>> Sorry, I was unclear.  I meant that I would like to plot the following:
>>
>> 1. For each user: the number of files for each date (my code does this)
>> 2. The sum of files of all users for each date (this is what I still
>>    need)
>>
>> > In each case you shall search functions geom_hline or geom_abline
>> >
>> > http://stackoverflow.com/questions/13254441/add-a-horizontal-line-to-
>> plot-and-legend-in-ggplot2
>>
>> So I don't want a straight line
>
> but in your code is
>
>>> geom_line(data=d,aes(x=date,y=sum(files),group=date),colour='black')
>
> so you apparently want some sort of line.

Yes, but see below.

> anyway, if I do
>
> d.ag<-aggregate(d$files, list(d$date), sum)
>
> I can add
>
> p+geom_point(data=d.ag,aes(x=Group.1,y=x), size=5)
>
> and I get summary points.

Thanks, this works.

> If you want lines you can do
>
> p+geom_hline(data=d.ag,aes(yintercept=x, colour=Group.1))
>
> or you can fiddle with geom_segment

I don't want an hline, just a line joining the dots I get using
geom_point.  I thought something like

  p + geom_line(data=d.ag,aes(x=as.character(Group.1),y=x)

would work.  However, while I get a plot with axes labelled in the
correct ranges, no line is plotted.  Explicitly setting the colour with

  p + geom_line(data=d.ag,aes(x=as.character(Group.1),y=x),colour="red")

doesn't help.  What am I doing wrong?

>>
>> > ggplot is rather complicated but very flexible
>>
>> I don't mind ggplot being complicated, but I find the documentation a
>> little impenetrable.
>
> You can find plenty of help when you just try to google on the item
> searching. Actually this is what I do when the solution is not obvious
> or requires some hidden instruction.

This is what I normally resort to with varying degrees of success.  It
just seems a bit of a shame the some of the documentation for such a
good piece of software does indeed appear to be rather "hidden".

> Cheers
> Petr
>
>>
>> Cheers,
>>
>> Loris
>>
>>
>> >> -----Original Message-----
>> >> From: R-help [mailto:[hidden email]] On Behalf Of
>> Loris
>> >> Bennett
>> >> Sent: Monday, March 09, 2015 2:56 PM
>> >> To: [hidden email]
>> >> Subject: [R] Add sum line to plot of multiple x values
>> >>
>> >> Hi,
>> >>
>> >> Here are my data:
>> >>
>> >> > d
>> >>    user files       date
>> >> 1 alice    18 2013-09-15
>> >> 2   bob     5 2013-09-15
>> >> 3 carol    21 2013-09-15
>> >> 4 alice    22 2013-09-08
>> >> 5   bob     9 2013-09-08
>> >> 6 carol    14 2013-09-08
>> >> 7 alice    26 2013-09-01
>> >> 8   bob     3 2013-09-01
>> >> 9 carol    22 2013-09-01
>> >>
>> >> I would like to plot the number of files against date for all users,
>> so
>> >> I have:
>> >>
>> >>   library(ggplot2)
>> >>
>> >>   people <- c("alice","bob","carol")
>> >>   user <- c(rep(people,3))
>> >>   files <- c(18,5,21,22,9,14,26,3,22)
>> >>   date <- c(rep("2013-09-15",3),rep("2013-09-08",3),rep("2013-09-
>> >> 01",3))
>> >>   d <- data.frame(user=user,files=files,date=date)
>> >>
>> >>   p <- ggplot()
>> >>   p <- p +
>> geom_line(data=d,aes(x=date,y=files,group=user,colour=user))
>> >>
>> >> I would now like to add a line to show the total number of files as
>> a
>> >> function of date.  I tried
>> >>
>> >>   p <- p +
>> >> geom_line(data=d,aes(x=date,y=sum(files),group=date),colour='black')
>> >>
>> >> I don't get a black line, but the plot is scaled such that I can see
>> >> that sum(file) for all values of 'file', rather than those for each
>> >> date, is being used.
>> >>
>> >> I would like to know how to do this correctly, but I would rather be
>> >> able to work it out for myself.  However, if I decide, say, that I
>> >> don't
>> >> know exactly what the 'group' argument does, how do I find it out?
>> >>
>> >> ?geom_line doesn't have it, although the examples there use it.
>> ?ggplot
>> >> doesn't mention it. ?group gives me stuff about formatting text
>> >> arguments. ??group only leads me to ?ggplot2::add_group, which also
>> >> does
>> >> not seem to help.
>> >>
>> >> Am I at fault for trying to learn R in an ad hoc manner, to which
>> the
>> >> documentation of R does not lend itself, or am I missing something?
>> >>
>> >> Cheers,
>> >>
>> >> Loris
>> >>
>> >> --
>> >> This signature is currently under construction.
>> >>

--
This signature is currently under construction.

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Re: Add sum line to plot of multiple x values

Loris Bennett-2
Loris Bennett <[hidden email]> writes:

> Hi Petr,
>
> See inline.
>
> PIKAL Petr <[hidden email]> writes:
>
>> Hi
>>
>> see inline
>>
>>> -----Original Message-----
>>> From: R-help [mailto:[hidden email]] On Behalf Of Loris
>>> Bennett
>>> Sent: Monday, March 09, 2015 4:35 PM
>>> To: [hidden email]
>>> Subject: Re: [R] Add sum line to plot of multiple x values
>>>
>>> PIKAL Petr <[hidden email]> writes:
>>>
>>> > Hi
>>> >
>>> > Not extremely clear what do you want to plot. Do you want to add a
>>> > line which marks total number of files each day regardless of user?
>>> Or
>>> > a total number of files regardless of date coloured by user?
>>>
>>> Sorry, I was unclear.  I meant that I would like to plot the following:
>>>
>>> 1. For each user: the number of files for each date (my code does this)
>>> 2. The sum of files of all users for each date (this is what I still
>>>    need)
>>>
>>> > In each case you shall search functions geom_hline or geom_abline
>>> >
>>> > http://stackoverflow.com/questions/13254441/add-a-horizontal-line-to-
>>> plot-and-legend-in-ggplot2
>>>
>>> So I don't want a straight line
>>
>> but in your code is
>>
>>>> geom_line(data=d,aes(x=date,y=sum(files),group=date),colour='black')
>>
>> so you apparently want some sort of line.
>
> Yes, but see below.
>
>> anyway, if I do
>>
>> d.ag<-aggregate(d$files, list(d$date), sum)
>>
>> I can add
>>
>> p+geom_point(data=d.ag,aes(x=Group.1,y=x), size=5)
>>
>> and I get summary points.
>
> Thanks, this works.
>
>> If you want lines you can do
>>
>> p+geom_hline(data=d.ag,aes(yintercept=x, colour=Group.1))
>>
>> or you can fiddle with geom_segment
>
> I don't want an hline, just a line joining the dots I get using
> geom_point.  I thought something like
>
>   p + geom_line(data=d.ag,aes(x=as.character(Group.1),y=x)
>
> would work.  However, while I get a plot with axes labelled in the
> correct ranges, no line is plotted.  Explicitly setting the colour with
>
>   p + geom_line(data=d.ag,aes(x=as.character(Group.1),y=x),colour="red")
>
> doesn't help.  What am I doing wrong?

I found the answer by googling "geom_line doesn’t draw lines".  The
following does what I want:

  ggplot(data=d.ag,aes(x=as.character(Group.1),y=x,group=1)) +_geom_line()

My understanding is that, because 'Group.1' is a factor, the 'x' values
are not considered as belonging to the same group and geom_line only
connects points within a group.

>>> > ggplot is rather complicated but very flexible
>>>
>>> I don't mind ggplot being complicated, but I find the documentation a
>>> little impenetrable.
>>
>> You can find plenty of help when you just try to google on the item
>> searching. Actually this is what I do when the solution is not obvious
>> or requires some hidden instruction.
>
> This is what I normally resort to with varying degrees of success.  It
> just seems a bit of a shame the some of the documentation for such a
> good piece of software does indeed appear to be rather "hidden".
>
>> Cheers
>> Petr
>>
>>>
>>> Cheers,
>>>
>>> Loris
>>>
>>>
>>> >> -----Original Message-----
>>> >> From: R-help [mailto:[hidden email]] On Behalf Of
>>> Loris
>>> >> Bennett
>>> >> Sent: Monday, March 09, 2015 2:56 PM
>>> >> To: [hidden email]
>>> >> Subject: [R] Add sum line to plot of multiple x values
>>> >>
>>> >> Hi,
>>> >>
>>> >> Here are my data:
>>> >>
>>> >> > d
>>> >>    user files       date
>>> >> 1 alice    18 2013-09-15
>>> >> 2   bob     5 2013-09-15
>>> >> 3 carol    21 2013-09-15
>>> >> 4 alice    22 2013-09-08
>>> >> 5   bob     9 2013-09-08
>>> >> 6 carol    14 2013-09-08
>>> >> 7 alice    26 2013-09-01
>>> >> 8   bob     3 2013-09-01
>>> >> 9 carol    22 2013-09-01
>>> >>
>>> >> I would like to plot the number of files against date for all users,
>>> so
>>> >> I have:
>>> >>
>>> >>   library(ggplot2)
>>> >>
>>> >>   people <- c("alice","bob","carol")
>>> >>   user <- c(rep(people,3))
>>> >>   files <- c(18,5,21,22,9,14,26,3,22)
>>> >>   date <- c(rep("2013-09-15",3),rep("2013-09-08",3),rep("2013-09-
>>> >> 01",3))
>>> >>   d <- data.frame(user=user,files=files,date=date)
>>> >>
>>> >>   p <- ggplot()
>>> >>   p <- p +
>>> geom_line(data=d,aes(x=date,y=files,group=user,colour=user))
>>> >>
>>> >> I would now like to add a line to show the total number of files as
>>> a
>>> >> function of date.  I tried
>>> >>
>>> >>   p <- p +
>>> >> geom_line(data=d,aes(x=date,y=sum(files),group=date),colour='black')
>>> >>
>>> >> I don't get a black line, but the plot is scaled such that I can see
>>> >> that sum(file) for all values of 'file', rather than those for each
>>> >> date, is being used.
>>> >>
>>> >> I would like to know how to do this correctly, but I would rather be
>>> >> able to work it out for myself.  However, if I decide, say, that I
>>> >> don't
>>> >> know exactly what the 'group' argument does, how do I find it out?
>>> >>
>>> >> ?geom_line doesn't have it, although the examples there use it.
>>> ?ggplot
>>> >> doesn't mention it. ?group gives me stuff about formatting text
>>> >> arguments. ??group only leads me to ?ggplot2::add_group, which also
>>> >> does
>>> >> not seem to help.
>>> >>
>>> >> Am I at fault for trying to learn R in an ad hoc manner, to which
>>> the
>>> >> documentation of R does not lend itself, or am I missing something?
>>> >>
>>> >> Cheers,
>>> >>
>>> >> Loris
>>> >>
>>> >> --
>>> >> This signature is currently under construction.
>>> >>

--
Dr. Loris Bennett (Mr.)
ZEDAT, Freie Universität Berlin         Email [hidden email]

______________________________________________
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Re: Add sum line to plot of multiple x values

PIKAL Petr
Hi

Yes, your understanding is correct

the same can be achieved by:

p+geom_point(data=d.ag,aes(x=Group.1,y=x), size=5)+
geom_line(data=d.ag,aes(x=1:3, y=x))

as factors are treated from 1 to number of levels if given as x aestetics.

The whole code is

library(ggplot2)
people <- c("alice","bob","carol")
user <- c(rep(people,3))
files <- c(18,5,21,22,9,14,26,3,22)
date <- c(rep("2013-09-15",3),rep("2013-09-08",3),rep("2013-09-01",3))
d <- data.frame(user=user,files=files,date=date)
p <- ggplot()
p <- p + geom_line(data=d,aes(x=date,y=files,group=user,colour=user))
d.ag<-aggregate(d$files, list(d$date), sum)
p+geom_point(data=d.ag,aes(x=Group.1,y=x), size=5)+
geom_line(data=d.ag,aes(x=1:3, y=x))

Cheers
Petr

> -----Original Message-----
> From: R-help [mailto:[hidden email]] On Behalf Of Loris
> Bennett
> Sent: Tuesday, March 10, 2015 1:43 PM
> To: [hidden email]
> Subject: Re: [R] Add sum line to plot of multiple x values
>
> Loris Bennett <[hidden email]> writes:
>
> > Hi Petr,
> >
> > See inline.
> >
> > PIKAL Petr <[hidden email]> writes:
> >
> >> Hi
> >>
> >> see inline
> >>
> >>> -----Original Message-----
> >>> From: R-help [mailto:[hidden email]] On Behalf Of
> >>> Loris Bennett
> >>> Sent: Monday, March 09, 2015 4:35 PM
> >>> To: [hidden email]
> >>> Subject: Re: [R] Add sum line to plot of multiple x values
> >>>
> >>> PIKAL Petr <[hidden email]> writes:
> >>>
> >>> > Hi
> >>> >
> >>> > Not extremely clear what do you want to plot. Do you want to add
> a
> >>> > line which marks total number of files each day regardless of
> user?
> >>> Or
> >>> > a total number of files regardless of date coloured by user?
> >>>
> >>> Sorry, I was unclear.  I meant that I would like to plot the
> following:
> >>>
> >>> 1. For each user: the number of files for each date (my code does
> >>> this) 2. The sum of files of all users for each date (this is what
> I still
> >>>    need)
> >>>
> >>> > In each case you shall search functions geom_hline or geom_abline
> >>> >
> >>> > http://stackoverflow.com/questions/13254441/add-a-horizontal-
> line-
> >>> > to-
> >>> plot-and-legend-in-ggplot2
> >>>
> >>> So I don't want a straight line
> >>
> >> but in your code is
> >>
> >>>>
> geom_line(data=d,aes(x=date,y=sum(files),group=date),colour='black'
> >>>> )
> >>
> >> so you apparently want some sort of line.
> >
> > Yes, but see below.
> >
> >> anyway, if I do
> >>
> >> d.ag<-aggregate(d$files, list(d$date), sum)
> >>
> >> I can add
> >>
> >> p+geom_point(data=d.ag,aes(x=Group.1,y=x), size=5)
> >>
> >> and I get summary points.
> >
> > Thanks, this works.
> >
> >> If you want lines you can do
> >>
> >> p+geom_hline(data=d.ag,aes(yintercept=x, colour=Group.1))
> >>
> >> or you can fiddle with geom_segment
> >
> > I don't want an hline, just a line joining the dots I get using
> > geom_point.  I thought something like
> >
> >   p + geom_line(data=d.ag,aes(x=as.character(Group.1),y=x)
> >
> > would work.  However, while I get a plot with axes labelled in the
> > correct ranges, no line is plotted.  Explicitly setting the colour
> > with
> >
> >   p +
> > geom_line(data=d.ag,aes(x=as.character(Group.1),y=x),colour="red")
> >
> > doesn't help.  What am I doing wrong?
>
> I found the answer by googling "geom_line doesn’t draw lines".  The
> following does what I want:
>
>   ggplot(data=d.ag,aes(x=as.character(Group.1),y=x,group=1))
> +_geom_line()
>
> My understanding is that, because 'Group.1' is a factor, the 'x' values
> are not considered as belonging to the same group and geom_line only
> connects points within a group.
>
> >>> > ggplot is rather complicated but very flexible
> >>>
> >>> I don't mind ggplot being complicated, but I find the documentation
> >>> a little impenetrable.
> >>
> >> You can find plenty of help when you just try to google on the item
> >> searching. Actually this is what I do when the solution is not
> >> obvious or requires some hidden instruction.
> >
> > This is what I normally resort to with varying degrees of success.
> It
> > just seems a bit of a shame the some of the documentation for such a
> > good piece of software does indeed appear to be rather "hidden".
> >
> >> Cheers
> >> Petr
> >>
> >>>
> >>> Cheers,
> >>>
> >>> Loris
> >>>
> >>>
> >>> >> -----Original Message-----
> >>> >> From: R-help [mailto:[hidden email]] On Behalf Of
> >>> Loris
> >>> >> Bennett
> >>> >> Sent: Monday, March 09, 2015 2:56 PM
> >>> >> To: [hidden email]
> >>> >> Subject: [R] Add sum line to plot of multiple x values
> >>> >>
> >>> >> Hi,
> >>> >>
> >>> >> Here are my data:
> >>> >>
> >>> >> > d
> >>> >>    user files       date
> >>> >> 1 alice    18 2013-09-15
> >>> >> 2   bob     5 2013-09-15
> >>> >> 3 carol    21 2013-09-15
> >>> >> 4 alice    22 2013-09-08
> >>> >> 5   bob     9 2013-09-08
> >>> >> 6 carol    14 2013-09-08
> >>> >> 7 alice    26 2013-09-01
> >>> >> 8   bob     3 2013-09-01
> >>> >> 9 carol    22 2013-09-01
> >>> >>
> >>> >> I would like to plot the number of files against date for all
> >>> >> users,
> >>> so
> >>> >> I have:
> >>> >>
> >>> >>   library(ggplot2)
> >>> >>
> >>> >>   people <- c("alice","bob","carol")
> >>> >>   user <- c(rep(people,3))
> >>> >>   files <- c(18,5,21,22,9,14,26,3,22)
> >>> >>   date <- c(rep("2013-09-15",3),rep("2013-09-08",3),rep("2013-
> 09-
> >>> >> 01",3))
> >>> >>   d <- data.frame(user=user,files=files,date=date)
> >>> >>
> >>> >>   p <- ggplot()
> >>> >>   p <- p +
> >>> geom_line(data=d,aes(x=date,y=files,group=user,colour=user))
> >>> >>
> >>> >> I would now like to add a line to show the total number of files
> >>> >> as
> >>> a
> >>> >> function of date.  I tried
> >>> >>
> >>> >>   p <- p +
> >>> >>
> geom_line(data=d,aes(x=date,y=sum(files),group=date),colour='blac
> >>> >> k')
> >>> >>
> >>> >> I don't get a black line, but the plot is scaled such that I can
> >>> >> see that sum(file) for all values of 'file', rather than those
> >>> >> for each date, is being used.
> >>> >>
> >>> >> I would like to know how to do this correctly, but I would
> rather
> >>> >> be able to work it out for myself.  However, if I decide, say,
> >>> >> that I don't know exactly what the 'group' argument does, how do
> >>> >> I find it out?
> >>> >>
> >>> >> ?geom_line doesn't have it, although the examples there use it.
> >>> ?ggplot
> >>> >> doesn't mention it. ?group gives me stuff about formatting text
> >>> >> arguments. ??group only leads me to ?ggplot2::add_group, which
> >>> >> also does not seem to help.
> >>> >>
> >>> >> Am I at fault for trying to learn R in an ad hoc manner, to
> which
> >>> the
> >>> >> documentation of R does not lend itself, or am I missing
> something?
> >>> >>
> >>> >> Cheers,
> >>> >>
> >>> >> Loris
> >>> >>
> >>> >> --
> >>> >> This signature is currently under construction.
> >>> >>
>
> --
> Dr. Loris Bennett (Mr.)
> ZEDAT, Freie Universität Berlin         Email loris.bennett@fu-
> berlin.de
>
> ______________________________________________
> [hidden email] 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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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
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