# [R] r graphing

R. Michael Weylandt michael.weylandt at gmail.com
Thu Apr 12 01:11:36 CEST 2012

```I repeat myself: Please reply all to the list and don't send HTML.

I'm not aware of facilities to do that automatically (though others
might now them) -- you can draw arrows manually with the arrows()
function.

Michael

On Wed, Apr 11, 2012 at 7:08 PM, John Kim <provicon2000 at yahoo.com> wrote:
> thank you so much..
>
> is it possible to make arrows show up at the end of axis.. and make
> numberings show up in the middle axis??
>
> From: R. Michael Weylandt <michael.weylandt at gmail.com>
> To: John Kim <provicon2000 at yahoo.com>; r-help <r-help at r-project.org>
> Sent: Wednesday, April 11, 2012 4:06 PM
> Subject: Re: [R] r graphing
>
> Alternatively, you can use
>
> curve(x^3, from = -5, to = 5); abline(h = 0, v = 0, lty = 2)
>
> which will work even if the axes aren't in the middle of the image.
>
> Michael
>
> On Wed, Apr 11, 2012 at 6:54 PM, R. Michael Weylandt
> <michael.weylandt at gmail.com> wrote:
>>
>> curve(x^3, from = -5, to = 5); grid()
>>
>> If you only want dotted lines at x = 0 & y = 0 use
>>
>> grid(2,2)
>>
>>
>> Michael
>>
>> On Wed, Apr 11, 2012 at 6:49 PM, John Kim <provicon2000 at yahoo.com> wrote:
>>>
>>> i tried the code below.. it shows the graph.. but how do i make x and y
>>> axis
>>> show up in the middle??
>>>
>>> i am teaching secondary school math.. and i need to produce graphs for
>>> learning purpose..
>>>
>>> i need nice x- y-axis.. in the middle.. with arrows at the end of axis..
>>>
>>> can you tell me how i can realize that??
>>>
>>> john
>>>
>>>
>>> From: R. Michael Weylandt <michael.weylandt at gmail.com>
>>> To: John Kim <ktown4989 at gmail.com>
>>> Cc: r-help at r-project.org; provicon2000 at yahoo.com
>>> Sent: Wednesday, April 11, 2012 2:37 PM
>>> Subject: Re: [R] r graphing
>>>
>>> The easiest way is to just use ?curve (type ?curve at the prompt to
>>> get documentation for curve): e.g., curve(x^3, from = -5, to = 5)
>>>
>>> You could also build the plot yourself like:
>>>
>>> x <- seq(-5, 5, length.out = 200)
>>> y <- x^3
>>>
>>> plot(x,y)
>>>
>>> Michael
>>>
>>> On Wed, Apr 11, 2012 at 4:41 PM, John Kim <ktown4989 at gmail.com> wrote:
>>>> can anybody tell me how i can draw x- y- axis and draw x^3 graph using
>>>> R graph??
>>>>
>>>> i need nice coordinate system with legends and coordinate
>>>> numberings..
>>>>
>>>> and nice graph of x^3 on it..  it will be nice if you tell me how i
>>>> can center the graph..
>>>>
>>>> i want the origin (0,0) to be right in the middle of the graph.
>>>>
>>>> thank you so much.
>>>>
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