Dear all
I usually find out how I can use expressions in picture annotationmyself :-)
plot(1,1, xlab=expression(paste("D50 [", mu,"m]")))
However when I want to use this programmatically I am rather lost. Is there
anybody who can shed a light on such annotation?
nams<-c("P2O5 [%]", "D50 [mum]")
pdf("test.pdf")
for (i in 1:2) plot(1, 1, xlab=nams[i])
dev.off()
I want to use text with the greek letter.
Best regards
Petr
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> nams<-c("P2O5 [%]", "D50 [mum]")These are strings; plotmath is invoked on expressions. Also, in an expression, [] has special meaning (it's treated as a subscripted index), so a space followed by '[' causes an error and even if that didn't happen, [] would not give units in square brackets. However, there is (perhaps surprisingly) nothing wrong with horrible constructions like enams<-c(expression(P[2]*O[5]*" [%]"), expression("D50 ["*mu*"]")) par(mfrow=c(2,1)) for (i in 1:2) plot(1, 1, xlab=nams[i]) # As far as plotmath is concerned, '*' is represented graphically as implicit multiplication, # and since it's just graphical, plotmath doesn?t care that some of the things being multiplied # are actually strings. The plotmath page also has a lot of examples of programmatic substitution in plotmath expressions; they just have to be followed very carefully. And ?bquote is also useful for substitution in plotmath... S Ellison ******************************************************************* This email and any attachments are confidential. Any use, copying or disclosure other than by the intended recipient is unauthorised. If you have received this message in error, please notify the sender immediately via +44(0)20 8943 7000 or notify postmaster at lgcgroup.com and delete this message and any copies from your computer and network. LGC Limited. Registered in England 2991879. Registered office: Queens Road, Teddington, Middlesex, TW11 0LY, UK
I would do this names <- c(expression(D[50]~mu*m), expression(P[2]*O[5]*"%")) for (i in 1:2) plot(1, 1, xlab=names[i]) On Fri, Jan 30, 2015 at 7:33 AM, PIKAL Petr <petr.pikal at precheza.cz> wrote:> Dear all > > I usually find out how I can use expressions in picture annotationmyself :-) > > plot(1,1, xlab=expression(paste("D50 [", mu,"m]"))) > > However when I want to use this programmatically I am rather lost. Is there anybody who can shed a light on such annotation? > > nams<-c("P2O5 [%]", "D50 [mum]") > > pdf("test.pdf") > for (i in 1:2) plot(1, 1, xlab=nams[i]) > dev.off() > > I want to use text with the greek letter. > > Best regards > Petr > > > ________________________________ > 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. > ______________________________________________ > 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 So the key is to put expression(s) directly into pool of annotations. I should think about it myself, stupid me. I normally use paste but your constructions are much more readable. thanks again. Petr> -----Original Message----- > From: Richard M. Heiberger [mailto:rmh at temple.edu] > Sent: Friday, January 30, 2015 2:30 PM > To: PIKAL Petr > Cc: r-help at r-project.org > Subject: Re: [R] lost in plotmath expressions > > I would do this > > names <- c(expression(D[50]~mu*m), expression(P[2]*O[5]*"%")) for (i in > 1:2) plot(1, 1, xlab=names[i]) > > On Fri, Jan 30, 2015 at 7:33 AM, PIKAL Petr <petr.pikal at precheza.cz> > wrote: > > Dear all > > > > I usually find out how I can use expressions in picture > > annotationmyself :-) > > > > plot(1,1, xlab=expression(paste("D50 [", mu,"m]"))) > > > > However when I want to use this programmatically I am rather lost. Is > there anybody who can shed a light on such annotation? > > > > nams<-c("P2O5 [%]", "D50 [mum]") > > > > pdf("test.pdf") > > for (i in 1:2) plot(1, 1, xlab=nams[i]) > > dev.off() > > > > I want to use text with the greek letter. > > > > Best regards > > Petr > > > > > > ________________________________ > > 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. > > ______________________________________________ > > 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.
You successfully used an 'expression' object in your first example
plot(1,1,xlab=expression(paste("D50 [", mu,"m]")))
so use a vector of expressions in your second example
nams<-c(expression(P[205]~"[%]"), expression(paste("D50
[", mu, "m]")))
par(mfrow=c(2,1))
for (i in 1:2) plot(1, 1, xlab=nams[i])
c(expression(a), expression(b)) is equivalent to the shorter expression(a,
b).
Bill Dunlap
TIBCO Software
wdunlap tibco.com
On Fri, Jan 30, 2015 at 4:33 AM, PIKAL Petr <petr.pikal at precheza.cz>
wrote:
> Dear all
>
> I usually find out how I can use expressions in picture annotationmyself
> :-)
>
> plot(1,1, xlab=expression(paste("D50 [", mu,"m]")))
>
> However when I want to use this programmatically I am rather lost. Is
> there anybody who can shed a light on such annotation?
>
> nams<-c("P2O5 [%]", "D50 [mum]")
>
> pdf("test.pdf")
> for (i in 1:2) plot(1, 1, xlab=nams[i])
> dev.off()
>
> I want to use text with the greek letter.
>
> Best regards
> Petr
>
>
> ________________________________
> 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.
> ______________________________________________
> 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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