[R] barplot problem

[Uwe Ligges]

On 27.05.2012 17:46, jack hietpas wrote:
> Hi Jim- Thanks for your help.  I am not sure how to execute your
> instructions... I used the space argument to to equally space the bars
> (barplot(data, space=c(1,1,1,1,1,1)).
>
> How do I get the "x positions in the return values".  Take care,


xp <- barplot(.....)

Then take a look into xp.

See also ?barplot!

Uwe Ligges


> -jh
>
>
>
> On Sun, May 27, 2012 at 3:42 AM, Jim Lemon<jim at bitwrit.com.au>  wrote:
>
>> On 05/27/2012 01:26 PM, jack hietpas wrote:
>>
>>> Hello- I am having trouble making a barplot...
>>>
>>> The y-values are:
>>> data=c(-0.0002129061,0.**0000000000,-0.0002699561,0.**
>>> 0163883061,0.0400000000).
>>>
>>> The x-values are distance=c(0, 71, 172, 206, 292).
>>> The desired x-range is 0 and ~300+ (kilometers), range=seq(0,300,1)
>>>
>>> I would like to make a bar plot with the bar locations along the x-axis
>>> spaced according to their distances.
>>>
>>> I have tried barplot(distance, data)... but this produces a very strange
>>> plot.
>>>
>>> plot(distance, data) is almost correct, except it is a scatter plot.
>>>
>>> Thanks for any help you can provide, I must be missing something very
>>> obvious.
>>>
>>>   Hi Jack,
>> You can use the space argument in barplot to do this by running barplot
>> with equally spaced bars, and getting the x positions of the bars in the
>> return values. Then just space the bars out as needed with a vector of
>> "space" values. This should give you a reasonable looking x axis, but you
>> might have to pass the cumulative sum of bar positions and spaces if you
>> want each bar labelled.
>>
>> Jim
>>
>>
>
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>
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