[R] Multiple plots and postscripts using split function
Florian Denzinger
florian.denzinger at uzh.ch
Sat Aug 2 05:22:26 CEST 2014
Thank you everyone for your help so far.
I am still working on the problem to get a merged new dataframe which fills in new rows with NA values for each year that is missing for plotting with gaps ( in the example the item BARTLEY: years 1984 to 1987 should be filled with a row containing NA values). Could someone maybe help me with this? Thank you.
NAME ID YEAR VALUE
ADAMS 885 1988 -2
ADAMS 885 1989 0
BAHIA DEL DIABLO 2665 1999 4
BAHIA DEL DIABLO 2665 2000 8
BAHIA DEL DIABLO 2665 2001 19
BAHIA DEL DIABLO 2665 2002 13
BAHIA DEL DIABLO 2665 2003 13
BARTLEY 893 1983 0
BARTLEY 893 1988 2
BARTLEY 893 1989 -1
CANADA 877 1972 -1
CLARK CPI 894 1973 -3
Am 01.08.2014 um 11:27 schrieb PIKAL Petr <petr.pikal at precheza.cz>:
> Hi
>
> Maybe others will disagree but I find for cycle for this type of task better than sapply.
>
> for(i in 1:length(ind)) {
>
> if (there are more than 3 date items*) {
>
> postscript(ind[i])
> do all plotting
> dev.off()
> }}
>
> If you want to plot with gaps you need to add all relevant YEARs for x axis with missing value in y before plotting. Then R plots it automatically with gap.
>
> x<-1:10
> y<-rnorm(10)
> y[5:6]<-NA
> plot(x,y, type="b")
>
> I would suggest to use merge for this task.
>
> table(dat$ID)
> gives you number of unique values for each ID and you can use it for discarding this ID from the list.
>
> Regards
> Petr
>
>
>> -----Original Message-----
>> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
>> project.org] On Behalf Of fd
>> Sent: Thursday, July 31, 2014 4:37 PM
>> To: r-help at r-project.org
>> Subject: [R] Multiple plots and postscripts using split function
>>
>> Hi,
>>
>> I'm relatively new to R and I would like to do the following:
>>
>> I have a .csv file with four columns (NAME, ID, YEAR, VALUE) and would
>> like to do several xy plots with the year on the x-axis and the data
>> values
>> (measurements) on the y-axis and after that export the different plots
>> to postcript.
>>
>> My .csv file looks something like this (only an example):
>>
>> NAME ID YEAR VALUE
>> ADAMS 885 1988 -2
>> ADAMS 885 1989 0
>> BAHIA DEL DIABLO 2665 1999 4
>> BAHIA DEL DIABLO 2665 2000 8
>> BAHIA DEL DIABLO 2665 2001 19
>> BAHIA DEL DIABLO 2665 2002 13
>> BAHIA DEL DIABLO 2665 2003 13
>> BARTLEY 893 1983 0
>> BARTLEY 893 1984 -1
>> BARTLEY 893 1985 0
>> BARTLEY 893 1988 2
>> BARTLEY 893 1989 -1
>> CANADA 877 1972 -1
>>
>> I have split the different items into groups and I'd like the plots to
>> have the title of NAME but the filename of the postscript to be
>> exported should have the ID as filename.
>>
>> My code so far:
>>
>> #Set Working Directory:
>> setwd("/Users/Desktop/FV")
>> # Read CSV
>> dat <- read.csv("FV.csv", sep=";", header=TRUE) # Split Data ind <-
>> split(x = dat,f = dat[,'ID']) nam <- names(ind)
>>
>> sapply(nam, function(x) {
>> postscript(x)
>> par(mar=c(6,8,6,5), cex=0.8)
>> plot(ind[[x]][,c('YEAR','VALUE')],
>> type='b',
>> main = x,
>> xlab="Time [Years]",
>> ylab="Front variation")
>> axis(1, at = seq(1800,2100,5), cex.axis=1, labels=FALSE, tcl=-
>> 0.3)
>> axis(2, at = seq(-100000,100000,500), cex.axis=1, labels=FALSE,
>> tcl=-0.3)
>>
>> dev.off()
>> })
>>
>> This results in plots with the title and filename of the resulting
>> postscript being the same. Is there a way to get the plot title out of
>> the NAME column and the filename out of the ID?
>>
>> Additionally I'd only like to plot graphs for items with more than 3
>> data values. Is this possible to incorporate in the split command?
>>
>> Another point is that some items have gaps in the time series where no
>> measurements were taken (in my example: BARTLEY from 1983 to 1985 and
>> 1988 to 1989). I would like to plot using type= 'b' so that the points
>> are connected with lines, but when doing that, the values between 1985
>> and 1988 are automatically connected which I don't want. I'd like the
>> plot to start again at the value where the gap ends (in my example from
>> 1988 onwards). Is there a solution for this?
>>
>> Any help is kindly appreciated! Thanks for your help.
>>
>> Kind regards,
>> fd
>>
>>
>>
>> --
>> View this message in context: http://r.789695.n4.nabble.com/Multiple-
>> plots-and-postscripts-using-split-function-tp4694850.html
>> Sent from the R help mailing list archive at Nabble.com.
>>
>> ______________________________________________
>> R-help at 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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