Message-ID: <tencent_4B4B250970D10EB51E7120D2@qq.com>
Date: 2008-11-28T03:38:49Z
From: Wind
Subject: segments could not draw line in log plot
abline(v=x) is better for my charts.
Thanks Christian.
Regards,
Winds
------------------ ???? ------------------
???: "Christian Prinoth"<Christian.Prinoth at epsilonsgr.it>;
????: 2008?11?28?(???) ??0:56
???: "Wind"<windspeedo at qq.com>; "r-sig-finance"<r-sig-finance at stat.math.ethz.ch>;
??: RE: [R-SIG-Finance] segments could not draw line in log plot
abline(v=x)
where x is the x-value for the vertical line
Christian Prinoth <cp at epsilonsgr.it>
Epsilon SGR
+39-02-88102355
> -----Original Message-----
> From: r-sig-finance-bounces at stat.math.ethz.ch
> [mailto:r-sig-finance-bounces at stat.math.ethz.ch] On Behalf Of Wind
> Sent: 27 November, 2008 17:44
> To: r-sig-finance
> Subject: [R-SIG-Finance] segments could not draw line in log plot
>
> The following code show the vertical red line successfully.
> y<-1:100
> plot(y)
> segments(50,0,50,100,col='red')
>
> But, if the y axis is changed to log axis, the red line could
> not be drawn.
> y<-1:100
> plot(y,log='y')
> segments(50,0,50,100,col='red')
>
> I wonder whether there is some method to draw a vertical line
> in a log-axis plot?
> Thanks in advance.
>
>
>
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