Dear All,

Thank you  very much for your kind help and support I got it.

Jeet

On Tue, Jun 1, 2010 at 5:32 PM, Jim Lemon <jim@bitwrit.com.au> wrote:

> On 06/01/2010 09:01 PM, khush ........ wrote:
>
>> Dear All,
>>
>> I am newbie to R, and I wanted to plot a barplots with R and in such a way
>> that It will also show me position which I can plot on the bar line.
>>
>> Here is my code that I am using to plot,
>>
>>  chromosome<- c(40.2, 35.6, 36.1, 29.6, 31, 29.6, 31, 29.4, 28.2, 23, 23,
>>>
>> 28.2)
>>
>>> barplot (chromosome, col="purple", xlab="Oryza sativa Chromosomes",
>>> border
>>>
>> = NA, space = 5, ylim = c(0,45))
>>
>> I wanted to mark the position say on chromosome 1 (40.2) I need to mark
>> 10.2
>> and on other also.
>> I also want to set the scale of y axis from 0,5,10,15,20,25,30,35,40,45
>> i.e
>> gap of 5 instead of 10.
>>
>> please help me to solve my query....gurus.
>>
>>  Hi Jeet,
> I think you want the x positions of the bars. Get them like this:
>
> xpos<-barplot (chromosome, col="purple",
>
>  xlab="Oryza sativa Chromosomes",
>  border = NA, space = 5, ylim = c(0,45))
>
> Then you can place the extra labels using the values in xpos.
> For the custom y axis, add the argument yaxt="n" to your plot command and
> then add the axis later. I suspect you will have to use something like the
> staxlab function in the plotrix package to get all those labels to display.
>
> Jim
>

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