[R] invalid 'row.names' length error when running scatterplots or plot in R Commander

[Dejian Zhao]

  I did not reproduce the error either, because I failed to find the 
function scattperplot in your script. :D  I suggest that you check 
whether they read the data into R correctly.

On 2010-9-20 10:00, Samantha McKenzie wrote:
> Hello,
> I teach statistics and use R Commander for teaching. I have 2 students
> out of 169 that can't get scatterplots or plot to work. I have had them
> update packages, restart R/R Commander/their computers and even
> reinstall R/R Commander. One is using Windows 7 on a new pc and the
> other is a pc user (not sure the OS). They are both using R2.11.1 and R
> Commander 1.6-0.
>
> The data look like this:
>> Mass
>     Mass Fore Bicep Chest Neck Shoulder Waist Height Calf Thigh Head
> 1  77.0 28.5  33.5 100.0 38.5    114.0  85.0  178.0 37.5  53.0 58.0
> 2  85.5 29.5  36.5 107.0 39.0    119.0  90.5  187.0 40.0  52.0 59.0
> 3  63.0 25.0  31.0  94.0 36.5    102.0  80.5  175.0 33.0  49.0 57.0
> 4  80.5 28.5  34.0 104.0 39.0    114.0  91.5  183.0 38.0  50.0 60.0
> 5  79.5 28.5  36.5 107.0 39.0    114.0  92.0  174.0 40.0  53.0 59.0
> 6  94.0 30.5  38.0 112.0 39.0    121.0 101.0  180.0 39.5  57.5 59.0
> 7  66.0 26.5  29.0  93.0 35.0    105.0  76.0  177.5 38.5  50.0 58.5
> 8  69.0 27.0  31.0  95.0 37.0    108.0  84.0  182.5 36.0  49.0 60.0
> 9  65.0 26.5  29.0  93.0 35.0    112.0  74.0  178.5 34.0  47.0 55.5
> 10 58.0 26.5  31.0  96.0 35.0    103.0  76.0  168.5 35.0  46.0 58.0
>
>
> This script:
>> scatterplot(Calf~Bicep, reg.line=lm, smooth=FALSE, spread=FALSE,
> +   boxplots=FALSE, span=0.5, data=Mass)
>
> Produces this error:
> invalid 'row.names' length
>
> The data look fine and correlation/regression can be done on them with
> correct output. Just not scatterplots.
>
> I tried a work around using the following script, but still with the
> same result:
> attach(Mass)
> Mass
> str(Mass)
> names(Mass)
> plot(Calf~Bicep)
> abline(lm(Calf~Bicep))
>
> I cannot repeat the error, nor have I found much information on that
> error message, and I'm a bit stumped why these two students are getting
> the error even after one has reinstalled the program.
>
> Cheers,
> Sam McKenzie
> The University of Queensland
>
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