[R] Replacing dates with consecutive observations
I am working with a list of dates and I would like to replace each date with the one that comes after, ie. 1/1/07 will become 1/5/07, 1/5/07 will become 1/7/07, etc. The number of days between my dates always varies, so I can't just increase each one by 5 days or so. Does anyone know of a way I can do this in R? thank you [[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.
[R] looking for matches
My question is probably pretty basic, but since I'm really new to R, here it goes I have two separate data frames that include class names and various other information on classes. I'm trying to create a match based on class names and if a match exists to create a third data frame with the class name. I was hoping to accomplish this with sapply, but I can't figure out if I can embed an "if statement" with sapply. Does anyone know if that's a legit way to accomplish what I am trying to do or is there some better way? thank you, Alina Sheyman [[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.
[R] (no subject)
I'm trying to establish the occurrence of a specific day of the week in a given month. Namely I want to know if a specific Tuesday was the 2nd,3rd Tuesday in a month. Is there a good way to this in R? thank you, Alina Sheyman [[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.
[R] occurrence of a weekday in a month
I'm trying to establish the occurrence of a specific day of the week in a given month. Namely I want to know if a specific Tuesday was the 2nd,3rd Tuesday in a month. Is there a good way to this in R? thank you, Alina Sheyman [[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.
[R] creating a map
I'm trying to create a fairly basic map using R. What i want to get is the
map of the country with circles representing a count of students in each
state.
What I've done so far is as following -
map("state")
symbols(data1$count,circles=log(data1$count)*3,fg=col,bg=col,add=T,inches=F)
this gives me the map of the country, but one that's not populated by my
counts.
Does anyone know what I'm doing wrong?
Also, if anyone can recommend a good reference for creating maps in R, I'd
really appreciate that.
thank you
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Re: [R] creating a map
Thanks Greg,
do you know where i can find the sate.center dataset that you mention?
On Tue, Feb 17, 2009 at 12:28 PM, Greg Snow wrote:
> You need to give the symbols function the locations where you want the
> centers of the circles to be. Some datesets with map information also have
> centers of the states that you can use, for the USA, there is the
> state.center dataset that may work for you, or the maptools package function
> get.Pcent will compute a center for polygons (there are probably other
> similar functions in other packages).
>
> For adding circles to a map of the USA, you may want to look at the
> state.vbm data in the TeachingDemos package (works with maptools package),
> but you will need to computer the centers of the polygons, they don't match
> state.center or others.
>
> Hope this helps,
>
> --
> Gregory (Greg) L. Snow Ph.D.
> Statistical Data Center
> Intermountain Healthcare
> greg.s...@imail.org
> 801.408.8111
>
>
> > -Original Message-
> > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-
> > project.org] On Behalf Of Alina Sheyman
> > Sent: Tuesday, February 17, 2009 9:53 AM
> > To: r-help@r-project.org
> > Subject: [R] creating a map
> >
> > I'm trying to create a fairly basic map using R. What i want to get is
> > the
> > map of the country with circles representing a count of students in
> > each
> > state.
> > What I've done so far is as following -
> > map("state")
> >
> > symbols(data1$count,circles=log(data1$count)*3,fg=col,bg=col,add=T,inch
> > es=F)
> >
> > this gives me the map of the country, but one that's not populated by
> > my
> > counts.
> > Does anyone know what I'm doing wrong?
> >
> > Also, if anyone can recommend a good reference for creating maps in R,
> > I'd
> > really appreciate that.
> >
> > thank you
> >
> > [[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.
>
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[R] RcolorBrewer
I've downloaded the RcolorBrewer package, but when I try to run mypalette<-brewer.pal(7,"Greens") (or any other command with brewer.pal) I get the following error message - Error: could not find function "brewer.pal" Does anyone know why that's happening? Is there smth else I need to download? thank you [[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.
Re: [R] RcolorBrewer
I figured it out thanks On Wed, Feb 18, 2009 at 3:50 PM, Domenico Vistocco wrote: > Alina Sheyman wrote: > >> I've downloaded the RcolorBrewer package, but when I try to run >> mypalette<-brewer.pal(7,"Greens") >> >> (or any other command with brewer.pal) >> >> I get the following error message - Error: could not find function >> "brewer.pal" >> >> Does anyone know why that's happening? Is there smth else I need to >> download? >> >> > Do you have loaded the package? > library(RcolorBrewer) > > thank you >> >>[[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. >> >> >> > > [[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.
[R] color maps with counts
I have yet another question concerning maps. This time I want to create a colored map of number of students by state. Can this be done using palettes in Rcolor brewer, is there some other way? I've been looking through R archives, but am still really at a loss here, so all help will be much appreciated. Thank you! [[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.
[R] colored maps again
I'm trying to create a colored map that would show the number of students
per state.
My data frame consists of two columns - state and count.
I'm using the following code
library(maps)
map("usa")
library(plotrix)
state.col<-color.scale(gre$count,0,0,c(0,1))
map("state",fill=TRUE,col=state.col)
I'm getting a map, but the values are not being mapped to correct states.
What do I need to do to fix that?
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[R] mapping lat and long with maps package
I am trying to overlay a data frame with lat and longitude(which refer to
zip codes) on the map of US that I get by using map ("states").
Is there anyway to do this or do I have to resort to using maptools?
thank you
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Re: [R] mapping lat and long with maps package
When I run this code i get the following error messages
Error in mapgetg(database, gon, as.polygon, xlim, ylim) :
NA/NaN/Inf in foreign function call (arg 6)
In addition: Warning messages:
1: In min(x, na.rm = na.rm) :
no non-missing arguments to min; returning Inf
2: In max(x, na.rm = na.rm) :
no non-missing arguments to max; returning -Inf
On Wed, Mar 4, 2009 at 5:27 PM, David Winsemius wrote:
> The example on the help page would seem to be completely on point if I
> understand your desire to be plotting text at particular long,lat
> coordinates:
>
> ?map
>
> text(long, lat, "text")
>
> #
> data(ozone)
> map("state", xlim = range(ozone$x), ylim = range(ozone$y))
> text(ozone$x, ozone$y, ozone$median)
> box()
>
> --
> David Winsemius
>
>
> On Mar 4, 2009, at 5:04 PM, Alina Sheyman wrote:
>
> I am trying to overlay a data frame with lat and longitude(which refer to
>> zip codes) on the map of US that I get by using map ("states").
>> Is there anyway to do this or do I have to resort to using maptools?
>>
>> thank you
>>
>>[[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.
>>
>
>
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[R] target of assignment expands to non-language object
I'm running the following code
numbers <- 1:50
for (i in 1:50)
assign(paste("model",numbers[i]),i)<-(lm(temp$Overall.Scaled.Score~temp$raw.score))
where I want R to create 50 different models-1:50, but get the following
error message
"target of assignment expands to non-language object". I've tried it with
paste("model",numbers[i]))<-(lm(temp$Overall.Scaled.Score~temp$raw.score)
and get the same error.
Does anyone know what the problem is or whether there's a better way to get
at what I'm trying to do?
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[R] model selection using ANOVA
I've created a number of models using lm and now want to pick one with the smallest standard error or the smallest RSS, I can get a list of RSS using anova function, but is the any way I can then select one with the smallest RSS from the list? [[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.
[R] Europe zip code shapefiles
Hi all, I'm looking for zip code shapefiles for Italy and France.Does anyone know where I might be able to find these? thank you! [[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.
