Re: smooth line

[Greg Snow]

Look at the function `xspline` (or related functions in grid).  You can give `xspline` your points and the argument `draw=FALSE` and it will return a set of points that you can pass to the ggplot2 functions to get a smooth curve.  The amount of smoothness and how the points influence the curve depends on the parameters that you set.

On Fri, May 24, 2013 at 12:14 PM, yadong xue <eag...@gmail.com> wrote:

hi, there
     I just want to connect points with smoothed line, but the geom_smooth() or stat="smooth" is not what i want. what then do is not connecting points, they do a transformation. i don't want that. I just want to connected the points with smooth line just like you draw a smooth line cover all points on a paper.

    can ggplot2 do that?

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Gregory (Greg) L. Snow Ph.D.
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[yadong xue]

ok, thank you, i'll try that.

[C]

I was looking a way to smooth points in a line just like this...its xspline  got it

Carey Duryea

On May 24, 2013 9:31 PM, "yadong xue" <eag...@gmail.com> wrote:

ok, thank you, i'll try that.

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[saadi]

Respected Mr Greg,

i m a beginner in ggplot2 and unable to plot a time series by using it.my R code is 

plot=ggplot(ct,aes(x=years,start=1948,end=2011,y=y))+geom_line() 

ct is my file name which is an object of ts. R is giving an error 

Error in grid.Call.graphics(L_lines, x$x, x$y, index, x$arrow) : 

  invalid line type

please guide me how can i make this simple graph.

[Gmail]

maybe you can try this script:

ggplot(data=economics,aes(x=date,y=unemploy)) + geom_line() + scale_x_date(limits=c(as.Date("1970-1-1"),as.Date("1995-1-1")))

best regards

Honglong Wu

On 29 May, 2013, at 1:24 AM, saadi <sadiachau...@gmail.com> wrote:

dear fellow,

i m a beginner in ggplot2 and unable to plot a time series by using it.my R code is 

plot=ggplot(ct,aes(x=years,start=1948,end=2011,y=y))+geom_line() 

ct is my file name which is an object of ts. R is giving an error 

Error in grid.Call.graphics(L_lines, x$x, x$y, index, x$arrow) : 

  invalid line type

please guide me how can i make this simple graph.