[R] Plot two zoo object with different indexes
Dear R community, I have the following two zoo objects: MONTHLY CPI plot(z) par(usr) [1] 1977.76333 2011.15333 70.39856 227.03744 z=zooreg(cpius$Value,as.yearmon(1979-11),frequency=12) str(z) ‘zooreg’ series from Nov 1979 to Oct 2010 Data: num [1:372] 76.2 77 77.8 78.5 79.5 80.3 81.1 82 82 82.6 ... Index: Class 'yearmon' num [1:372] 1980 1980 1980 1980 1980 ... Frequency: 12 AND A DAILY SERIES IN THE SAME RANGE plot(y) par(usr) [1] 3233.8 15362.270.42363 226.38559 str(y) ‘zoo’ series from 1980-02-01 to 2010-10-31 Data: num [1:11231] 76.2 76.2 76.3 76.3 76.3 ... Index: Class 'Date' num [1:11231] 3683 3684 3685 3686 3687 ... Now, due to a different index (and a different usr parameter for the graphic) I am not able to plot the two series together. How shall I do? Thanks -- View this message in context: http://r.789695.n4.nabble.com/Plot-two-zoo-object-with-different-indexes-tp3055890p3055890.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Plot two zoo object with different indexes
On Tue, Nov 23, 2010 at 12:53 PM, Manta mantin...@libero.it wrote: Dear R community, I have the following two zoo objects: MONTHLY CPI plot(z) par(usr) [1] 1977.76333 2011.15333 70.39856 227.03744 z=zooreg(cpius$Value,as.yearmon(1979-11),frequency=12) str(z) ‘zooreg’ series from Nov 1979 to Oct 2010 Data: num [1:372] 76.2 77 77.8 78.5 79.5 80.3 81.1 82 82 82.6 ... Index: Class 'yearmon' num [1:372] 1980 1980 1980 1980 1980 ... Frequency: 12 AND A DAILY SERIES IN THE SAME RANGE plot(y) par(usr) [1] 3233.8 15362.2 70.42363 226.38559 str(y) ‘zoo’ series from 1980-02-01 to 2010-10-31 Data: num [1:11231] 76.2 76.2 76.3 76.3 76.3 ... Index: Class 'Date' num [1:11231] 3683 3684 3685 3686 3687 ... Now, due to a different index (and a different usr parameter for the graphic) I am not able to plot the two series together. How shall I do? Try this: library(zoo) z1 - zooreg(1:20, start = as.yearmon(2000-01), freq = 12) z2 - zoo(1:600, as.Date(2000-01-01) + 0:599) m - merge(day = aggregate(z1, as.Date, identity), month = z2) plot(na.approx(m)) -- Statistics Software Consulting GKX Group, GKX Associates Inc. tel: 1-877-GKX-GROUP email: ggrothendieck at gmail.com __ 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.
Re: [R] Plot two zoo object with different indexes
Thanks as always Gabor. What I was looking for was to plot the daily series on the same graph of the monthly using the command 'lines'. That is why I wanted to change the index of one of the two, as it seems the reason why at the moment it is not working! -- View this message in context: http://r.789695.n4.nabble.com/Plot-two-zoo-object-with-different-indexes-tp3055890p3055936.html Sent from the R help mailing list archive at Nabble.com. __ 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.
Re: [R] Plot two zoo object with different indexes
On Tue, Nov 23, 2010 at 1:11 PM, Manta mantin...@libero.it wrote: Thanks as always Gabor. What I was looking for was to plot the daily series on the same graph of the monthly using the command 'lines'. That is why I wanted to change the index of one of the two, as it seems the reason why at the moment it is not working! plot(na.approx(m), screen = 1) -- Statistics Software Consulting GKX Group, GKX Associates Inc. tel: 1-877-GKX-GROUP email: ggrothendieck at gmail.com __ 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.
Re: [R] Plot two zoo object with different indexes
Ok this helps definitely! But I still would like to know 1. How to change from one index to another within a 'zoo' object 2. How to import using as index 'Date' a monthly series (code below). The series in the US CPI from November 1979 to October 2010. z - zoo(cpius$Value, as.Date(1979-11-30)+0:372) -- View this message in context: http://r.789695.n4.nabble.com/Plot-two-zoo-object-with-different-indexes-tp3055890p3056215.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Plot two zoo object with different indexes
On Tue, Nov 23, 2010 at 3:58 PM, Manta mantin...@libero.it wrote: Ok this helps definitely! But I still would like to know 1. How to change from one index to another within a 'zoo' object Using z - zooreg(1:10, start = as.yearmon(2000-01), freq = 12) Try aggregate(z, as.Date, identity) or time(z) - as.Date(time(z)) Note that an example of the first approach was already shown in the earlier answer. 2. How to import using as index 'Date' a monthly series (code below). The series in the US CPI from November 1979 to October 2010. z - zoo(cpius$Value, as.Date(1979-11-30)+0:372) Assuming the question is how to turn this daily series into a monthly series: aggregate(z, as.yearmon, function(x) tail(x, 1)) Suggest you carefully review ?aggregate.zoo -- Statistics Software Consulting GKX Group, GKX Associates Inc. tel: 1-877-GKX-GROUP email: ggrothendieck at gmail.com __ 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.
Re: [R] Plot two zoo object with different indexes
Gabor Grothendieck wrote: 2. How to import using as index 'Date' a monthly series (code below). The series in the US CPI from November 1979 to October 2010. z - zoo(cpius$Value, as.Date(1979-11-30)+0:372) Assuming the question is how to turn this daily series into a monthly series: No, I have a monthly series and I want to create a zoo object indexed by date and not by class yearmon or by a number (i.e., I would like to avoid this two structures when importing monthly data and to have as index the class date) z=zooreg(cpius$Value,as.yearmon(1978-11),frequency=12) str(z) ‘zooreg’ series from Nov 1978 to Oct 2009 Data: num [1:372] 76.2 77 77.8 78.5 79.5 80.3 81.1 82 82 82.6 ... Index: Class 'yearmon' num [1:372] 1979 1979 1979 1979 1979 ... Frequency: 12 z=zooreg(cpius$Value,start=c(1978,11),frequency=12) str(z) ‘zooreg’ series from 1978.833 to 2009.75 Data: num [1:372] 76.2 77 77.8 78.5 79.5 80.3 81.1 82 82 82.6 ... Index: num [1:372] 1979 1979 1979 1979 1979 ... Frequency: 12 -- View this message in context: http://r.789695.n4.nabble.com/Plot-two-zoo-object-with-different-indexes-tp3055890p3056295.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Plot two zoo object with different indexes
On Tue, Nov 23, 2010 at 4:41 PM, Manta mantin...@libero.it wrote: Gabor Grothendieck wrote: 2. How to import using as index 'Date' a monthly series (code below). The series in the US CPI from November 1979 to October 2010. z - zoo(cpius$Value, as.Date(1979-11-30)+0:372) Assuming the question is how to turn this daily series into a monthly series: No, I have a monthly series and I want to create a zoo object indexed by date and not by class yearmon or by a number (i.e., I would like to avoid this two structures when importing monthly data and to have as index the class date) z=zooreg(cpius$Value,as.yearmon(1978-11),frequency=12) str(z) ‘zooreg’ series from Nov 1978 to Oct 2009 Data: num [1:372] 76.2 77 77.8 78.5 79.5 80.3 81.1 82 82 82.6 ... Index: Class 'yearmon' num [1:372] 1979 1979 1979 1979 1979 ... Frequency: 12 z=zooreg(cpius$Value,start=c(1978,11),frequency=12) str(z) ‘zooreg’ series from 1978.833 to 2009.75 Data: num [1:372] 76.2 77 77.8 78.5 79.5 80.3 81.1 82 82 82.6 ... Index: num [1:372] 1979 1979 1979 1979 1979 ... Frequency: 12 How to convert a monthly series to a daily series has already been illustrated in multiple ways in this thread. -- Statistics Software Consulting GKX Group, GKX Associates Inc. tel: 1-877-GKX-GROUP email: ggrothendieck at gmail.com __ 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.
Re: [R] Plot two zoo object with different indexes
Gabor Grothendieck wrote: How to convert a monthly series to a daily series has already been illustrated in multiple ways in this thread. Fair enough. However, my last question was different. I simply want to know if there is a simple neat way to import a monthly series as a zoo object indexed by date without applying other function after the import (as in the example, using aggregate) Thanks -- View this message in context: http://r.789695.n4.nabble.com/Plot-two-zoo-object-with-different-indexes-tp3055890p3056327.html Sent from the R help mailing list archive at Nabble.com. __ 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.
Re: [R] Plot two zoo object with different indexes
On Tue, Nov 23, 2010 at 5:03 PM, Manta mantin...@libero.it wrote: Gabor Grothendieck wrote: How to convert a monthly series to a daily series has already been illustrated in multiple ways in this thread. Fair enough. However, my last question was different. I simply want to know if there is a simple neat way to import a monthly series as a zoo object indexed by date without applying other function after the import (as in the example, using aggregate) Thanks If by import you mean reading it in from a file you can use the read.zoo FUN= argument to manipulate the time index as you read it in (and if you want to aggregate or split it at the same time there are aggregate= and split= arguments as well). See ?read.zoo -- Statistics Software Consulting GKX Group, GKX Associates Inc. tel: 1-877-GKX-GROUP email: ggrothendieck at gmail.com __ 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.
