R help - Mar 2015 - Superimposing 2 curves on the same graph with par(new=TRUE)

Dear R-Experts,

I try to superimpose/present 2 curves/plots on the same graph. I would like the
result/graph to be readable.
For that, I use the par(new=TRUE) argument but on the Y-axis there is a
superposition of writings and the Y-axis becomes unreadable.
How can I solve this problem ?

Here is a reproducible example :
Date<-c(1970,1971,1972,1973,1974,1975,1976,1977,1978,1979,1980,1981,1982,1983,1984,1985,1986,1987,1988,1989,1990,1991,1992,1993,1994,1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010)
 
MORTSFr<-c(16445,17671,18113,17043,14738,14355,15028,14283,13229,13603,13672,13547,13527,13021,12737,11388,11947,10742,11497,11476,11215,10483,9900,9568,9019,8891,8541,8444,8918,8487,8079,8160,7655,6058,5593,5318,4709,4620,4275,4273,3992)
 
MORTSBu<-c(838,889,934,946,960,1030,1021,1040,1153,1149,1199,1219,1229,1123,1119,1113,1070,1153,1153,1280,1567,1114,1299,1307,1390,1264,1014,915,1003,1047,1012,1011,959,960,943,957,1043,1006,1061,901,776)
 
plot(Date,MORTSFr,type="l")
par(new=TRUE)

plot(Date,MORTSBu,lwd=2,lty="dashed")

Thanks for your time.
Best,
S

Here is how:

plot(Date,MORTSFr,type="l", ylim=c(0,max(MORTSFr)))
points(Date,MORTSBu,type="l",lty=2)


If you don't use the same scale for the two plots, you are probably
misrepresenting the data. If you want to plot relative change, normalize the
data before plotting.

norm <- function(x) {(x - min(x))/(max(x) - min(x))}
plot(Date,norm(MORTSFr),ylab=c("Relative Change"),type="l")
points(Date,norm(MORTSBu),type="l",lty=2)


B.

On Mar 23, 2015, at 11:54 AM, varin sacha <varinsacha at yahoo.fr> wrote:
> Dear R-Experts,
> 
> I try to superimpose/present 2 curves/plots on the same graph. I would like
the result/graph to be readable.
> For that, I use the par(new=TRUE) argument but on the Y-axis there is a
superposition of writings and the Y-axis becomes unreadable.
> How can I solve this problem ?
> 
> Here is a reproducible example :
>
Date<-c(1970,1971,1972,1973,1974,1975,1976,1977,1978,1979,1980,1981,1982,1983,1984,1985,1986,1987,1988,1989,1990,1991,1992,1993,1994,1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010)
> 
>
MORTSFr<-c(16445,17671,18113,17043,14738,14355,15028,14283,13229,13603,13672,13547,13527,13021,12737,11388,11947,10742,11497,11476,11215,10483,9900,9568,9019,8891,8541,8444,8918,8487,8079,8160,7655,6058,5593,5318,4709,4620,4275,4273,3992)
> 
>
MORTSBu<-c(838,889,934,946,960,1030,1021,1040,1153,1149,1199,1219,1229,1123,1119,1113,1070,1153,1153,1280,1567,1114,1299,1307,1390,1264,1014,915,1003,1047,1012,1011,959,960,943,957,1043,1006,1061,901,776)
> 
> plot(Date,MORTSFr,type="l")
> par(new=TRUE)
> 
> plot(Date,MORTSBu,lwd=2,lty="dashed")
> 
> Thanks for your time.
> Best,
> S
> 
> ______________________________________________
> 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.

Try:
plot(Date,MORTSBu,lwd=2,lty="dashed",axes=F,xlab="",ylab="")



Clint Bowman			INTERNET:	clint at ecy.wa.gov
Air Quality Modeler		INTERNET:	clint at math.utah.edu
Department of Ecology		VOICE:		(360) 407-6815
PO Box 47600			FAX:		(360) 407-7534
Olympia, WA 98504-7600

         USPS:           PO Box 47600, Olympia, WA 98504-7600
         Parcels:        300 Desmond Drive, Lacey, WA 98503-1274

On Mon, 23 Mar 2015, varin sacha wrote:
> Dear R-Experts,
>
> I try to superimpose/present 2 curves/plots on the same graph. I would like
the result/graph to be readable.
> For that, I use the par(new=TRUE) argument but on the Y-axis there is a
superposition of writings and the Y-axis becomes unreadable.
> How can I solve this problem ?
>
> Here is a reproducible example :
>
Date<-c(1970,1971,1972,1973,1974,1975,1976,1977,1978,1979,1980,1981,1982,1983,1984,1985,1986,1987,1988,1989,1990,1991,1992,1993,1994,1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010)
>
>
MORTSFr<-c(16445,17671,18113,17043,14738,14355,15028,14283,13229,13603,13672,13547,13527,13021,12737,11388,11947,10742,11497,11476,11215,10483,9900,9568,9019,8891,8541,8444,8918,8487,8079,8160,7655,6058,5593,5318,4709,4620,4275,4273,3992)
>
>
MORTSBu<-c(838,889,934,946,960,1030,1021,1040,1153,1149,1199,1219,1229,1123,1119,1113,1070,1153,1153,1280,1567,1114,1299,1307,1390,1264,1014,915,1003,1047,1012,1011,959,960,943,957,1043,1006,1061,901,776)
>
> plot(Date,MORTSFr,type="l")
> par(new=TRUE)
>
> plot(Date,MORTSBu,lwd=2,lty="dashed")
>
> Thanks for your time.
> Best,
> S
>
> ______________________________________________
> 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.
>

... which is exactly what he shouldn't do because now it the plot falsely
asserts that both curves are plotted to the same scale.


B.



On Mar 23, 2015, at 12:34 PM, Clint Bowman <clint at ecy.wa.gov> wrote:
> Try:
>
plot(Date,MORTSBu,lwd=2,lty="dashed",axes=F,xlab="",ylab="")
> 
> 
> 
> Clint Bowman			INTERNET:	clint at ecy.wa.gov
> Air Quality Modeler		INTERNET:	clint at math.utah.edu
> Department of Ecology		VOICE:		(360) 407-6815
> PO Box 47600			FAX:		(360) 407-7534
> Olympia, WA 98504-7600
> 
>        USPS:           PO Box 47600, Olympia, WA 98504-7600
>        Parcels:        300 Desmond Drive, Lacey, WA 98503-1274
> 
> On Mon, 23 Mar 2015, varin sacha wrote:
> 
>> Dear R-Experts,
>> 
>> I try to superimpose/present 2 curves/plots on the same graph. I would
like the result/graph to be readable.
>> For that, I use the par(new=TRUE) argument but on the Y-axis there is a
superposition of writings and the Y-axis becomes unreadable.
>> How can I solve this problem ?
>> 
>> Here is a reproducible example :
>>
Date<-c(1970,1971,1972,1973,1974,1975,1976,1977,1978,1979,1980,1981,1982,1983,1984,1985,1986,1987,1988,1989,1990,1991,1992,1993,1994,1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010)
>> 
>>
MORTSFr<-c(16445,17671,18113,17043,14738,14355,15028,14283,13229,13603,13672,13547,13527,13021,12737,11388,11947,10742,11497,11476,11215,10483,9900,9568,9019,8891,8541,8444,8918,8487,8079,8160,7655,6058,5593,5318,4709,4620,4275,4273,3992)
>> 
>>
MORTSBu<-c(838,889,934,946,960,1030,1021,1040,1153,1149,1199,1219,1229,1123,1119,1113,1070,1153,1153,1280,1567,1114,1299,1307,1390,1264,1014,915,1003,1047,1012,1011,959,960,943,957,1043,1006,1061,901,776)
>> 
>> plot(Date,MORTSFr,type="l")
>> par(new=TRUE)
>> 
>> plot(Date,MORTSBu,lwd=2,lty="dashed")
>> 
>> Thanks for your time.
>> Best,
>> S
>> 
>> ______________________________________________
>> 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.
>> 
> 
> ______________________________________________
> 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.