Hi Jim,

I am manipulating the data before drawing the graph and somehow get 
'factors'. So this code is what works perfectly.

set1$duration<- as.POSIXct(paste('2013-08-24', set1$duration))
plot(set1$duration,as.numeric(levels(set1$duration.1)[set1$duration.1]),type="b",col 
= "blue", 
ylim=c(0,max(as.numeric(levels(set1$duration.1)[set1$duration.1]))),ylab="Duration", 
xaxt = 'n', xlab="Time",las=2,lwd=2.5, lty=1,cex.axis=1.2)

axis(1, at = set1$duration, labels = set1$duration, las = 2,cex.axis=1.2)
text(set1$duration,as.numeric(levels(set1$duration.1)[set1$duration.1]), 
as.numeric(levels(set1$duration.1)[set1$duration.1]), 2, cex=1.45)

Thanks,
Mohan



From:   jim holtman <jholtman@gmail.com>
To:     mohan.radhakrishnan@polarisft.com
Cc:     R mailing list <r-help@r-project.org>
Date:   09/06/2013 08:20 PM
Subject:        Re: [R] Y-axis labels as decimal numbers



Does this modification work for you:

par(mar=c(10,4,4,2))
plot(set1$duration,set1$duration.1,type="b",col = "blue",  ylab="", xaxt =
'n', xlab="",las=2,lwd=2.5, lty=1,cex.axis=2.5)
# now plot you times
axis(1
    , at = set1$duration
    , labels = format(set1$duration, format = "%H:%M")
    , las = 2
    ,cex.axis=2.5
    )


Jim Holtman
Data Munger Guru

What is the problem that you are trying to solve?
Tell me what you want to do, not how you want to do it.


On Fri, Sep 6, 2013 at 1:42 AM,  <mohan.radhakrishnan@polarisft.com> 
wrote:
> Hi,
>
> set1$duration.2<- as.POSIXct(paste('2013-08-24', set1$duration))
> plot(set1$duration.2,set1$duration.1,type="b",col = "blue",  ylab="", 
xaxt =
> 'n', xlab="",las=2,lwd=2.5, lty=1,cex.axis=2.5)
> # now plot you times
> axis(1, at = set1$duration.2, labels = set1$duration, las = 
2,cex.axis=2.5)
> text(set1$duration,set1$duration.1, set1$duration.1, 2, cex=1.45)
>
> I think this is the correct code. The graphs is attached. y-axis is not
> accurately shown.
>
>
>
>
> Thanks.
>
>
>
> From:        jim holtman <jholtman@gmail.com>
> To:        mohan.radhakrishnan@polarisft.com
> Cc:        R mailing list <r-help@r-project.org>
> Date:        09/05/2013 10:01 PM
> Subject:        Re: [R] Y-axis labels as decimal numbers
> ________________________________
>
>
>
> So what is wrong with the y-axis?  When I run your script, things seem
> right.  Can you explain what it is that you want.
> Jim Holtman
> Data Munger Guru
>
> What is the problem that you are trying to solve?
> Tell me what you want to do, not how you want to do it.
>
>
>
> On Thu, Sep 5, 2013 at 9:22 AM,  <mohan.radhakrishnan@polarisft.com> 
wrote:
>> Hi,
>>              I am able to create a graph with this code but the decimal
>> numbers are not plotted accurately because the ylim values are not set
>> properly. x-axis is proper.
>>
>> How do I accurately set the ylim for duration.1 column ?
>>
>> Thanks,
>> Mohan
>>
>> set1$duration<- as.POSIXct(paste('2013-08-24', set1$duration))
>> plot(set1$duration,set1$duration.1,type="b",col = "blue",  ylab="", 
xaxt =
>> 'n', xlab="",las=2,lwd=2.5, lty=1,cex.axis=2.5)
>> # now plot you times
>> axis(1, at = set1$duration, labels = set1$duration, las = 
2,cex.axis=2.5)
>>
>>    duration duration.1
>> 2  16:03:41       0.05
>> 3  17:03:41       0.27
>> 4  18:03:43       1.22
>> 5  19:03:45       1.51
>> 6  20:03:47       1.27
>> 7  21:03:48       1.15
>> 8  22:03:50       1.22
>> 9  23:03:52       1.27
>> 10 00:03:54       1.27
>> 11 01:03:55       1.22
>> 12 02:03:57       1.26
>> 13 03:03:59       1.57
>> 14 04:04:01       1.31
>> 15 05:04:03       1.24
>>
>>
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