R help - Aug 2011 - Access Violation error after loading csv file

Hello,

I am using Windows 7 and R version 2.13.1. I was trying to read a csv file
which has about 1.5 million records and 13 variables. My R code loaded
145,346 records only without showing any error. If I want to see the last
few records (tail), it is throwing access violation error. I am attaching
the screenshot showing this error and  the code I am running to read this
file.

While running this program, I was observing the memory usage in Windows
resource monitor. It showed the maximum usage of 30% physical memory at the
peak.

To see if the line 145,346 is the cause of problem, I tried to read starting
line 145,300 -it read again few thousands line including line 145, 346, but
the same access violation error if I want to see the tail. So, I don't think
it is due to that particular line (145,346).

Can you please help me to resolve this problem?

Thanks,

Mitu
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Can you please make an example available that reproduces the error, e.g. 
some code that produces a similar csv file like yours?

Uwe Ligges


On 23.08.2011 06:29, Mitu De wrote:
> Hello,
>
> I am using Windows 7 and R version 2.13.1. I was trying to read a csv file
> which has about 1.5 million records and 13 variables. My R code loaded
> 145,346 records only without showing any error. If I want to see the last
> few records (tail), it is throwing access violation error. I am attaching
> the screenshot showing this error and  the code I am running to read this
> file.
>
> While running this program, I was observing the memory usage in Windows
> resource monitor. It showed the maximum usage of 30% physical memory at the
> peak.
>
> To see if the line 145,346 is the cause of problem, I tried to read
starting
> line 145,300 -it read again few thousands line including line 145, 346, but
> the same access violation error if I want to see the tail. So, I don't
think
> it is due to that particular line (145,346).
>
> Can you please help me to resolve this problem?
>
> Thanks,
>
> Mitu
>
>
> ErrorMsg.png
>
>
>
>
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