Yes ! Many thanks Gabor.I'll email the relevant people on Axis about this.
Tolga



Tolga Uzuner
Cross-Markets
Chief Investments Office
JP Morgan
6th Floor, 100 Wood Street
London EC2V 7RF
United Kingdom
Asst. Lee Hesketh
Tel: +44-20-77773303
Fax: +44-20-77422840




"Gabor Grothendieck" <ggrothendieck@gmail.com> 
05/11/2008 15:40

To
tolga.i.uzuner@jpmorgan.com
cc
r-help@r-project.org
Subject
Re: [R] fine grain tick marks for zoo plots






I think the problem is that there is a bug in R itself.  If we use axis 
instead
of Axis it works even with no check at all:

plotmonths<-function(z,...){
 plot(z,xaxt="n",...)
 tt <- time(z)
 m <- unique(as.Date(as.yearmon(tt)))
 jan <- format(m, "%m") == "01"
 mlab <- substr(months(m[!jan]), 1, 1)
 axis(side = 1, at = m[!jan], labels = mlab, tcl = -0.3, cex.axis = 0.7)
 axis(side = 1, at = m[jan], labels = format(m[jan], "%y"), tcl = -0.7)
 axis(side = 1, at = unique(as.Date(as.yearqtr(tt))), labels = FALSE)
}

d <- seq(as.Date("2008-01-15"), as.Date("2008-11-04"), by = "day")
z <- zoo(seq_along(d), d)
plotmonths(z)


On Wed, Nov 5, 2008 at 10:08 AM,  <tolga.i.uzuner@jpmorgan.com> wrote:
>
> Hi Gabor,
> Thanks very much.
>
> I tried that:
>
> plotmonths<-function(z,...){
>  plot(z,xaxt="n",...)
>  tt <- time(z)
>  m <- unique(as.Date(as.yearmon(tt)))
>  jan <- format(m, "%m") == "01"
>  mlab <- substr(months(m[!jan]), 1, 1)
>  Axis(side = 1, at = m[!jan], labels = mlab, tcl = -0.3, cex.axis = 0.7)
> #if(abs(as.numeric(head(index(z),1)-tail(index(z),1)))>367)
> if(any(jan))
>         Axis(side = 1, at = m[jan], labels = format(m[jan], "%y"), tcl =
> -0.7)
>  Axis(side = 1, at = unique(as.Date(as.yearqtr(tt))), labels = FALSE)
> }
>
> But that fails with the same error message:
> Error in axis(side, at = z, labels = labels, ...) :
>   'at' and 'labels' lengths differ, 0 != 1
>
> I think the problem is that, if one has a time series that goes from the
> 15th of Jan 2008 to 4 Nov 2008, in the absence of the test above, the 
script
> attempts to place "08" at the very left when that tick does not really 
get
> placed by plot.zoo. By testing that the time series is at least a year 
long,
> one ensures that there is space for the "08" tick.
>
> Tolga
>
>
>
>
> "Gabor Grothendieck" <ggrothendieck@gmail.com>
>
> 05/11/2008 14:47
>
> To
> tolga.i.uzuner@jpmorgan.com
> cc
> r-help@r-project.org
> Subject
> Re: [R] fine grain tick marks for zoo plots
>
>
>
>
> Try
>
> if (any(jan)) ...
>
>
> On Wed, Nov 5, 2008 at 8:55 AM,  <tolga.i.uzuner@jpmorgan.com> wrote:
>>
>> By way of follow-up, this will not work if the time series does not run
>> over
>> a year, as the replacement of January by the year fails on the second 
call
>> to Axis.
>>
>> The following tests for this:
>>
>> plotmonths<-function(z,...){
>>  plot(z,xaxt="n",...)
>>  tt <- time(z)
>>  m <- unique(as.Date(as.yearmon(tt)))
>>  jan <- format(m, "%m") == "01"
>>  mlab <- substr(months(m[!jan]), 1, 1)
>>  Axis(side = 1, at = m[!jan], labels = mlab, tcl = -0.3, cex.axis = 
0.7)
>> if(abs(as.numeric(head(index(z),1)-tail(index(z),1)))>367)
>>         Axis(side = 1, at = m[jan], labels = format(m[jan], "%y"), tcl 
=
>> -0.7)
>>  Axis(side = 1, at = unique(as.Date(as.yearqtr(tt))), labels = FALSE)
>> }
>>
>>
>>
>>
>> Tolga I Uzuner/JPMCHASE
>>
>> 04/11/2008 14:16
>>
>> To
>> "Gabor Grothendieck" <ggrothendieck@gmail.com>
>> cc
>> r-help@r-project.org, tolga.i.uzuner@jpmorgan.com
>> Subject
>> Re: [R] fine grain tick marks for zoo plotsLink
>>
>>
>>
>> Many thanks all. The following does the trick for me, taken out of the
>> vignette:
>>
>> plotmonths<-function(z,...){
>>  plot(z,xaxt="n",...)
>>  tt <- time(z)
>>  m <- unique(as.Date(as.yearmon(tt)))
>>  jan <- format(m, "%m") == "01"
>>  mlab <- substr(months(m[!jan]), 1, 1)
>>  Axis(side = 1, at = m[!jan], labels = mlab, tcl = -0.3, cex.axis = 
0.7)
>>  Axis(side = 1, at = m[jan], labels = format(m[jan], "%y"), tcl = -0.7)
>>  Axis(side = 1, at = unique(as.Date(as.yearqtr(tt))), labels = FALSE)
>> }
>>
>> Regards,
>> Tolga
>>
>>
>>
>>
>> "Gabor Grothendieck" <ggrothendieck@gmail.com>
>>
>> 04/11/2008 14:06
>>
>> To
>> tolga.i.uzuner@jpmorgan.com
>> cc
>> r-help@r-project.org
>> Subject
>> Re: [R] fine grain tick marks for zoo plots
>>
>>
>>
>>
>> And there are additional examples in
>> vignette("zoo-faq")
>> and
>> example(xyplot.zoo)
>>
>> On Tue, Nov 4, 2008 at 8:26 AM, Gabor Grothendieck
>> <ggrothendieck@gmail.com> wrote:
>>> example(plot.zoo) has an example.
>>>
>>> On Tue, Nov 4, 2008 at 8:10 AM,  <tolga.i.uzuner@jpmorgan.com> wrote:
>>>> Dear R Users,
>>>>
>>>> I am trying to get plot.zoo to place monthy tickmarks/labels for a 
time
>>>> series which spans daily data going back a bit over a year. Right 
now, I
>>>> am getting only one tick mark on the x-axis for the beginning of 
2008.
>>>> How
>>>> can I force plot.zoo to place more regular x-axis tick marks on a
>>>> monthly
>>>> basis ?
>>>>
>>>> Thanks in advance,
>>>> Tolga
>>>>
>>>>
>>>> Generally, this communication is for informational purposes only
>>>> and it is not intended as an offer or solicitation for the purchase
>>>> or sale of any financial instrument or as an official confirmation
>>>> of any transaction. In the event you are receiving the offering
>>>> materials attached below related to your interest in hedge funds or
>>>> private equity, this communication may be intended as an offer or
>>>> solicitation for the purchase or sale of such fund(s).  All market
>>>> prices, data and other information are not warranted as to
>>>> completeness or accuracy and are subject to change without notice.
>>>> Any comments or statements made herein do not necessarily reflect
>>>> those of JPMorgan Chase & Co., its subsidiaries and affiliates.
>>>>
>>>> This transmission may contain information that is privileged,
>>>> confidential, legally privileged, and/or exempt from disclosure
>>>> under applicable law. If you are not the intended recipient, you
>>>> are hereby notified that any disclosure, copying, distribution, or
>>>> use of the information contained herein (including any reliance
>>>> thereon) is STRICTLY PROHIBITED. Although this transmission and any
>>>> attachments are believed to be free of any virus or other defect
>>>> that might affect any computer system into which it is received and
>>>> opened, it is the responsibility of the recipient to ensure that it
>>>> is virus free and no responsibility is accepted by JPMorgan Chase &
>>>> Co., its subsidiaries and affiliates, as applicable, for any loss
>>>> or damage arising in any way from its use. If you received this
>>>> transmission in error, please immediately contact the sender and
>>>> destroy the material in its entirety, whether in electronic or hard
>>>> copy format. Thank you.
>>>> Please refer to http://www.jpmorgan.com/pages/disclosures for
>>>> disclosures relating to UK legal entities.
>>>>        [[alternative HTML version deleted]]
>>>>
>>>> ______________________________________________
>>>> R-help@r-project.org mailing list
>>>> 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.
>>>>
>>>
>>
>>
>> ________________________________
>>
>> Generally, this communication is for informational purposes only and it 
is
>> not intended as an offer or solicitation for the purchase or sale of 
any
>> financial instrument or as an official confirmation of any transaction. 
In
>> the event you are receiving the offering materials attached below 
related
>> to
>> your interest in hedge funds or private equity, this communication may 
be
>> intended as an offer or solicitation for the purchase or sale of such
>> fund(s). All market prices, data and other information are not 
warranted
>> as
>> to completeness or accuracy and are subject to change without notice. 
Any
>> comments or statements made herein do not necessarily reflect those of
>> JPMorgan Chase & Co., its subsidiaries and affiliates. This 
transmission
>> may
>> contain information that is privileged, confidential, legally 
privileged,
>> and/or exempt from disclosure under applicable law. If you are not the
>> intended recipient, you are hereby notified that any disclosure, 
copying,
>> distribution, or use of the information contained herein (including any
>> reliance thereon) is STRICTLY PROHIBITED. Although this transmission 
and
>> any
>> attachments are believed to be free of any virus or other defect that
>> might
>> affect any computer system into which it is received and opened, it is 
the
>> responsibility of the recipient to ensure that it is virus free and no
>> responsibility is accepted by JPMorgan Chase & Co., its subsidiaries 
and
>> affiliates, as applicable, for any loss or damage arising in any way 
from
>> its use. If you received this transmission in error, please immediately
>> contact the sender and destroy the material in its entirety, whether in
>> electronic or hard copy format. Thank you. Please refer to
>> http://www.jpmorgan.com/pages/disclosures for disclosures relating to 
UK
>> legal entities.
>
> ________________________________
>
> Generally, this communication is for informational purposes only and it 
is
> not intended as an offer or solicitation for the purchase or sale of any
> financial instrument or as an official confirmation of any transaction. 
In
> the event you are receiving the offering materials attached below 
related to
> your interest in hedge funds or private equity, this communication may 
be
> intended as an offer or solicitation for the purchase or sale of such
> fund(s). All market prices, data and other information are not warranted 
as
> to completeness or accuracy and are subject to change without notice. 
Any
> comments or statements made herein do not necessarily reflect those of
> JPMorgan Chase & Co., its subsidiaries and affiliates. This transmission 
may
> contain information that is privileged, confidential, legally 
privileged,
> and/or exempt from disclosure under applicable law. If you are not the
> intended recipient, you are hereby notified that any disclosure, 
copying,
> distribution, or use of the information contained herein (including any
> reliance thereon) is STRICTLY PROHIBITED. Although this transmission and 
any
> attachments are believed to be free of any virus or other defect that 
might
> affect any computer system into which it is received and opened, it is 
the
> responsibility of the recipient to ensure that it is virus free and no
> responsibility is accepted by JPMorgan Chase & Co., its subsidiaries and
> affiliates, as applicable, for any loss or damage arising in any way 
from
> its use. If you received this transmission in error, please immediately
> contact the sender and destroy the material in its entirety, whether in
> electronic or hard copy format. Thank you. Please refer to
> http://www.jpmorgan.com/pages/disclosures for disclosures relating to UK
> legal entities.



Generally, this communication is for informational purposes only
and it is not intended as an offer or solicitation for the purchase
or sale of any financial instrument or as an official confirmation
of any transaction. In the event you are receiving the offering
materials attached below related to your interest in hedge funds or
private equity, this communication may be intended as an offer or
solicitation for the purchase or sale of such fund(s).  All market
prices, data and other information are not warranted as to
completeness or accuracy and are subject to change without notice.
Any comments or statements made herein do not necessarily reflect
those of JPMorgan Chase & Co., its subsidiaries and affiliates.

This transmission may contain information that is privileged,
confidential, legally privileged, and/or exempt from disclosure
under applicable law. If you are not the intended recipient, you
are hereby notified that any disclosure, copying, distribution, or
use of the information contained herein (including any reliance
thereon) is STRICTLY PROHIBITED. Although this transmission and any
attachments are believed to be free of any virus or other defect
that might affect any computer system into which it is received and
opened, it is the responsibility of the recipient to ensure that it
is virus free and no responsibility is accepted by JPMorgan Chase &
Co., its subsidiaries and affiliates, as applicable, for any loss
or damage arising in any way from its use. If you received this
transmission in error, please immediately contact the sender and
destroy the material in its entirety, whether in electronic or hard
copy format. Thank you.
Please refer to http://www.jpmorgan.com/pages/disclosures for
disclosures relating to UK legal entities.
	[[alternative HTML version deleted]]

