[R] Differentiate values in a plot by colour or symbol

[Ismail SEZEN]

> On 30 May 2017, at 20:48, Tobias Christoph <s3tochri at uni-bayreuth.de> wrote:
> 
> Hi Ismael,
> 
> thanks for your quick reply.
> 
> I was now able to esmitate two intervals with the "findInterval"-Function.
> 
>   x  
>  [1,] 2005 1
>  [2,] 2006 1
>  [3,] 2007 1
>  [4,] 2008 1
>  [5,] 2009 1
>  [6,] 2010 1
>  [7,] 2011 2
>  [8,] 2012 2
>  [9,] 2013 2
> [10,] 2014 2
> [11,] 2015 2
> [12,] 2016 2
> But I was not able to connect the intervals with the plot-function. I used the following formular.
> "plot(data$stations, data$revenue, xlab="stations", ylab="revenue", col(findInterval())"
> 
In fact I should say “feed _col_ or _pch_ argument with the result of findInterval” as below:

plot(data$stations, data$revenue, xlab="stations", ylab="revenue", col = findInterval(x$year, c(2005, 2010, 2015))

Please note that If you have many (20-30) intervals, colour handling will be more complex. But I assume you have maximum 5-10 intervals. So, the piece of code above will work for you.

> How can I proceed and get the plot-funktion running?
> Maybe it is not running because the years as single numbers are already contained in my data-frame?
> Cheers,
> 
> Toby
> 
> 
> Am 30.05.2017 um 18:26 schrieb Ismail SEZEN:
>>> On 30 May 2017, at 19:02, Tobias Christoph <s3tochri at uni-bayreuth.de> <mailto:s3tochri at uni-bayreuth.de> wrote:
>>> 
>>> Hey Guys,
>>> 
>>> I just try to differentiate certain values in my plot by colour or symbol.
>>> 
>>> I have panel data with three dimensions (number of stations, revenue, 
>>> years). To integrate the third dimension (years) in the plot, I want to 
>>> differentiate the values(number of stations, revenue) by a certain range 
>>> of years.
>>> 
>>> e.g.: 2005-2010: red coloured dots, 2011-2016, blue coloured dots
>>> 
>>> For the normal plot I used the following formula:
>>> 
>>> *plot(data$stations, data$revenue, xlab="stations", ylab="revenue")*
>>> 
>>> I only found a way to mark every single year. So hopefully you can help?
>>> 
>>> Cheers,
>>> 
>>> Toby
>>> 
>> 
>> See ?findInterval. Especially, first 3 lines in _Examples_ section. Use result of findInterval as argument to _col_ or _pch_ in plot function.
>> 
>> 
> 


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