R help - Jun 2017 - Changing ggplot2 legend key/title to custom text

Hi all, 

ok I have this issue: 

I want to change my graphs legends to custom text, often requiring the use of
superscripts/subscripts
I tried to use this instruction I found on stack overflow: 

labs(x = "R(Ohm)", y= "CDF", aesthetic= " Content
(%)" )

but it wont' seem to work. 

Also tried bquote for super/ subscripts 

xlab(bquote(~x~/(~x~ + ~MO[2]~)* '(%)'))

but I get an error that the / operator is not recognized. 

Any ideas on how I can solve these issues ? 

Thanks in advance,
Marios Barlas

Hi

There are plenty of examples
https://stackoverflow.com/questions/6202667/how-to-use-subscripts-in-ggplot2-legends-r
https://stackoverflow.com/questions/19507742/using-expressionpaste-to-insert-math-notation-into-a-ggplot-legend

which you can modify.

If you say

"but it wont' seem to work"

how can we know what does it mean?

Plotmath expressions are rather tricky, especially if you do not use them often.
You need some experimenting.

Cheers
Petr
> -----Original Message-----
> From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of BARLAS
> Marios 247554
> Sent: Thursday, June 29, 2017 11:47 AM
> To: r-help at r-project.org
> Subject: [R] Changing ggplot2 legend key/title to custom text
>
> Hi all,
>
> ok I have this issue:
>
> I want to change my graphs legends to custom text, often requiring the use
of
> superscripts/subscripts I tried to use this instruction I found on stack
overflow:
>
> labs(x = "R(Ohm)", y= "CDF", aesthetic= " Content
(%)" )
>
> but it wont' seem to work.
>
> Also tried bquote for super/ subscripts
>
> xlab(bquote(~x~/(~x~ + ~MO[2]~)* '(%)'))
>
> but I get an error that the / operator is not recognized.
>
> Any ideas on how I can solve these issues ?
>
> Thanks in advance,
> Marios Barlas
>
> ______________________________________________
> 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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- odes?latel tohoto emailu informuje, ?e nen? opr?vn?n uzav?rat za spole?nost
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pov??en a takov? pov??en? nebo pln? moc byly adres?tovi tohoto emailu p??padn?
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Hi Petr and thanks for your reply,

That's the problem I don't want to modify the labels of my legends but
the title of the legend in itself inserting my custom text :)

Take for example the 1st graph in this tutorial
http://www.sthda.com/english/wiki/ggpubr-r-package-ggplot2-based-publication-ready-plots
I want to change the "sex" in "sex subscript 2" or "
(sex/sex[2]+Q)

Thanks again,

Marios Barlas
PhD Candidate
CMOS & Memory Integration
Advanced Memory Group

Leti, technology research institute 
Commissariat ? l??nergie atomique et aux ?nergies alternatives
T. +33 4 38 78 11 50 M. +33 6 02 61 83 49
www.leti.fr  | Leti is a member of the Carnot Institutes network
 
-----Message d'origine-----
De?: PIKAL Petr [mailto:petr.pikal at precheza.cz] 
Envoy??: jeudi 29 juin 2017 13:08
??: BARLAS Marios 247554 <Marios.BARLAS at cea.fr>; r-help at
r-project.org
Objet?: RE: Changing ggplot2 legend key/title to custom text

Hi

There are plenty of examples
https://stackoverflow.com/questions/6202667/how-to-use-subscripts-in-ggplot2-legends-r
https://stackoverflow.com/questions/19507742/using-expressionpaste-to-insert-math-notation-into-a-ggplot-legend

which you can modify.

If you say

"but it wont' seem to work"

how can we know what does it mean?

Plotmath expressions are rather tricky, especially if you do not use them often.
You need some experimenting.

Cheers
Petr
> -----Original Message-----
> From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of BARLAS 
> Marios 247554
> Sent: Thursday, June 29, 2017 11:47 AM
> To: r-help at r-project.org
> Subject: [R] Changing ggplot2 legend key/title to custom text
>
> Hi all,
>
> ok I have this issue:
>
> I want to change my graphs legends to custom text, often requiring the 
> use of superscripts/subscripts I tried to use this instruction I found on
stack overflow:
>
> labs(x = "R(Ohm)", y= "CDF", aesthetic= " Content
(%)" )
>
> but it wont' seem to work.
>
> Also tried bquote for super/ subscripts
>
> xlab(bquote(~x~/(~x~ + ~MO[2]~)* '(%)'))
>
> but I get an error that the / operator is not recognized.
>
> Any ideas on how I can solve these issues ?
>
> Thanks in advance,
> Marios Barlas
>
> ______________________________________________
> 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.
________________________________
Tento e-mail a jak?koliv k n?mu p?ipojen? dokumenty jsou d?v?rn? a jsou ur?eny
pouze jeho adres?t?m.
Jestli?e jste obdr?el(a) tento e-mail omylem, informujte laskav? neprodlen? jeho
odes?latele. Obsah tohoto emailu i s p??lohami a jeho kopie vyma?te ze sv?ho
syst?mu.
Nejste-li zam??len?m adres?tem tohoto emailu, nejste opr?vn?ni tento email
jakkoliv u??vat, roz?i?ovat, kop?rovat ?i zve?ej?ovat.
Odes?latel e-mailu neodpov?d? za eventu?ln? ?kodu zp?sobenou modifikacemi ?i
zpo?d?n?m p?enosu e-mailu.

V p??pad?, ?e je tento e-mail sou??st? obchodn?ho jedn?n?:
- vyhrazuje si odes?latel pr?vo ukon?it kdykoliv jedn?n? o uzav?en? smlouvy, a
to z jak?hokoliv d?vodu i bez uveden? d?vodu.
- a obsahuje-li nab?dku, je adres?t opr?vn?n nab?dku bezodkladn? p?ijmout;
Odes?latel tohoto e-mailu (nab?dky) vylu?uje p?ijet? nab?dky ze strany p??jemce
s dodatkem ?i odchylkou.
- trv? odes?latel na tom, ?e p??slu?n? smlouva je uzav?ena teprve v?slovn?m
dosa?en?m shody na v?ech jej?ch n?le?itostech.
- odes?latel tohoto emailu informuje, ?e nen? opr?vn?n uzav?rat za spole?nost
??dn? smlouvy s v?jimkou p??pad?, kdy k tomu byl p?semn? zmocn?n nebo p?semn?
pov??en a takov? pov??en? nebo pln? moc byly adres?tovi tohoto emailu p??padn?
osob?, kterou adres?t zastupuje, p?edlo?eny nebo jejich existence je adres?tovi
?i osob? j?m zastoupen? zn?m?.

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.