[R] xyplot: modify axis tick marks

Sun Jan 16 18:46:07 CET 2011

Using lattice and the rainfall$Time series as proposed below by Dennis 
gives also a nice result:

rainfall$Time <- seq(from = as.Date('1993-01-01'), 
                                to      = as.Date('2007-12-01'), by = 'month')
xyplot(rainfall~Time,data=rainfall,type=c("g","p","l","smooth"))

On Sunday 16 January 2011 17:33:18 Dennis Murphy wrote:
> Hi:
> 
> Try this, since your data have no missing months:
> 
> rainfall$Time <- seq(from = as.Date('1993-01-01'), to =
> as.Date('2007-12-01'), by = 'month')
> g <- ggplot(rainfall, aes(x = Time, y = rainfall))
> g + geom_path()
> 
> HTH,
> Dennis
> 
> On Sun, Jan 16, 2011 at 5:01 AM, Kang Min <ngokangmin at gmail.com> wrote:
> 
> > Hi,
> >
> > I would like to plot time against rainfall data (data is at the end)
> > using xyplot.
> >
> > The basic code looks like this: xyplot(rainfall~time, type="a")
> > When I do this, the graph looks ok except that the x-axis has too many
> > values. I would just like to display the years and not the months on
> > the x-axis. I've been fiddling around with 'scales', and read previous
> > posts about axis problems but I still can't find the solution.
> >
> > Thanks in advance.
> >
> > Kang Min
> >
> > time    rainfall
> > Jan1993 176.4
> > Feb1993 69.2
> > Mar1993 250.5
> > Apr1993 283.9
> > May1993 129.9
> > Jun1993 115.5
> > Jul1993 240
> > Aug1993 106.8
> > Sep1993 61.7
> > Oct1993 175.5
> > Nov1993 250.8
> > Dec1993 308.5
> > Jan1994 56.9
> > Feb1994 133.5
> > Mar1994 288.2
> > Apr1994 154
> > May1994 169.6
> > Jun1994 184.7
> > Jul1994 53.8
> > Aug1994 45.1
> > Sep1994 23.7
> > Oct1994 84.7
> > Nov1994 322.2
> > Dec1994 425.4
> > Jan1995 349.4
> > Feb1995 334
> > Mar1995 67.7
> > Apr1995 242.3
> > May1995 84.4
> > Jun1995 63.7
> > Jul1995 173.6
> > Aug1995 211.6
> > Sep1995 29.5
> > Oct1995 101.1
> > Nov1995 372.8
> > Dec1995 302.5
> > Jan1996 173.2
> > Feb1996 180.2
> > Mar1996 129.7
> > Apr1996 178.2
> > May1996 107.5
> > Jun1996 265.8
> > Jul1996 162.3
> > Aug1996 258.4
> > Sep1996 297
> > Oct1996 300
> > Nov1996 180.2
> > Dec1996 185.5
> > Jan1997 15.4
> > Feb1997 105.4
> > Mar1997 34.3
> > Apr1997 118.4
> > May1997 41.6
> > Jun1997 78.9
> > Jul1997 18.6
> > Aug1997 86.6
> > Sep1997 31.1
> > Oct1997 78.4
> > Nov1997 158.3
> > Dec1997 351.9
> > Jan1998 268.8
> > Feb1998 32.5
> > Mar1998 58.8
> > Apr1998 187.7
> > May1998 370.8
> > Jun1998 198.8
> > Jul1998 259.2
> > Aug1998 195
> > Sep1998 258.2
> > Oct1998 222.7
> > Nov1998 107.2
> > Dec1998 463.4
> > Jan1999 193.9
> > Feb1999 67.4
> > Mar1999 181.4
> > Apr1999 88.5
> > May1999 157.1
> > Jun1999 103.4
> > Jul1999 225.4
> > Aug1999 204
> > Sep1999 125.9
> > Oct1999 205
> > Nov1999 241.5
> > Dec1999 340.5
> > Jan2000 275.2
> > Feb2000 237.8
> > Mar2000 238.3
> > Apr2000 311.6
> > May2000 96.8
> > Jun2000 157.5
> > Jul2000 116.1
> > Aug2000 113.5
> > Sep2000 81.1
> > Oct2000 120.9
> > Nov2000 385.7
> > Dec2000 236
> > Jan2001 425.8
> > Feb2001 86.6
> > Mar2001 297.3
> > Apr2001 203.3
> > May2001 164.9
> > Jun2001 137.1
> > Jul2001 111.3
> > Aug2001 158.3
> > Sep2001 162
> > Oct2001 252.2
> > Nov2001 175.3
> > Dec2001 609
> > Jan2002 221.2
> > Feb2002 50.8
> > Mar2002 55.6
> > Apr2002 116.5
> > May2002 236.6
> > Jun2002 83.1
> > Jul2002 233.7
> > Aug2002 54.2
> > Sep2002 124.2
> > Oct2002 10.8
> > Nov2002 307.2
> > Dec2002 255
> > Jan2003 444.2
> > Feb2003 172.9
> > Mar2003 154.6
> > Apr2003 159.9
> > May2003 81.8
> > Jun2003 50.3
> > Jul2003 170.4
> > Aug2003 193.6
> > Sep2003 205.3
> > Oct2003 351.4
> > Nov2003 133.8
> > Dec2003 273
> > Jan2004 600.9
> > Feb2004 31.9
> > Mar2004 269.4
> > Apr2004 57.1
> > May2004 137.6
> > Jun2004 127.2
> > Jul2004 166.6
> > Aug2004 185.2
> > Sep2004 128.9
> > Oct2004 125.6
> > Nov2004 166.2
> > Dec2004 139.8
> > Jan2005 163.2
> > Feb2005 8.4
> > Mar2005 82.4
> > Apr2005 81.7
> > May2005 331.1
> > Jun2005 82.3
> > Jul2005 104
> > Aug2005 58.5
> > Sep2005 175.7
> > Oct2005 314.5
> > Nov2005 362.9
> > Dec2005 166
> > Jan2006 454.4
> > Feb2006 115.5
> > Mar2006 83.1
> > Apr2006 239.8
> > May2006 205.7
> > Jun2006 236.8
> > Jul2006 153.8
> > Aug2006 127.3
> > Sep2006 83.3
> > Oct2006 102
> > Nov2006 185.6
> > Dec2006 765.9
> > Jan2007 450.1
> > Feb2007 105.5
> > Mar2007 269.1
> > Apr2007 240.2
> > May2007 127.2
> > Jun2007 139
> > Jul2007 141.7
> > Aug2007 190.7
> > Sep2007 149
> > Oct2007 237.2
> > Nov2007 367.9
> > Dec2007 468.6
> >
> > ______________________________________________
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> > 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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> 
> ______________________________________________
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>