Thnaks Liam. The problem is solved.

-----Original Message-----
From: Saleh Rahimlouye Barabi 
Sent: 30. september 2019. a. 16:32
To: Liam Revell; R-sig-phylo@r-project.org
Subject: RE: [R-sig-phylo] plotting time-calibrated trees

Dear Liam,

Yes, It is the best solution. But I'm getting an error with the negative sign 
of the "by" argument in the following code. Would you please explain it to me?

obj<-axis(1,pos=0,at=seq(T,min.tick,by=-tick.spacing),cex.axis=0.5,labels=FALSE)
error : wrong sign in 'by' argument

Best Regards,
Saleh

-----Original Message-----
From: Liam Revell [mailto:liam.rev...@umb.edu]
Sent: 30. september 2019. a. 15:03
To: Saleh Rahimlouye Barabi; R-sig-phylo@r-project.org
Subject: Re: [R-sig-phylo] plotting time-calibrated trees

Dear Saleh.

You can do this using my package phytools or using ape::axisPhylo. I have an 
example using both options on my blog: 
http://blog.phytools.org/2018/02/another-technique-for-including-time.html.

All the best, Liam

Liam J. Revell
Associate Professor, University of Massachusetts Boston Profesor Asistente, 
Universidad Católica de la Ssma Concepción
web: http://faculty.umb.edu/liam.revell/, http://www.phytools.org

Academic Director UMass Boston Chile Abroad (starting 2019):
https://www.umb.edu/academics/caps/international/biology_chile

On 9/30/2019 8:46 AM, Saleh Rahimlouye Barabi wrote:
> [EXTERNAL SENDER]
> 
> Hello,
> 
> I have constructed a big time-calibrated tree (683 tip labels) using the  
> ape::chronopl function. What is a good way of visualizing this tree in a 
> circular way with time scale axis?
> 
> Best,
> Saleh Rahimlou
> Ph.D. Candidate
> Department of Botany and Ecology
> University of Tartu
> 14A Ravila, 50411 Tartu
> Estonia
> Email: saleh.rahim...@ut.ee<mailto:saleh.rahim...@ut.ee>
> 
> 
>          [[alternative HTML version deleted]]
> 
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