On 08.05.2013 13:38, Ramon Hofer wrote:
Thanks for your answer Uwe
On Fri, 03 May 2013 23:36:24 +0200
Uwe Ligges <lig...@statistik.tu-dortmund.de> wrote:
On 02.05.2013 14:37, Ramon Hofer wrote:
I'm trying to analyse the network speed and used iperf to create a
csv file containing the link test data. It's only about 6 MB big but
contains about 40'000 samples.
I can do boxplots (apart from printing the number of samples but I
ask separately for that).
To find the behaviour over time I wanted to plot the throuphput. So
I have this command:
plot(A$Timestamp, A$Bandwidth.bit.sec., xlab = "Timestamp", ylab =
"Bandwidth [bit/s]", ylim = quantile(A$Bandwidth.bit.sec.,
c(0, .99), na.rm = TRUE))
Unfortunately I get this:
Error: cannot allocate vector of size 12.5 Gb
40000 samples and 6MB can't be the issue unless this is not a regular
plot but the classes of A$Timestamp or A$Bandwidth.bit.sec are rather
special.
This should be a standard plot. I can't tell exactly as I'm new to R...
What do
str(A$Timestamp)
Factor w/ 40886 levels "2013-04-29_10:31:47.189194629",..: 1 2 3 4 5 6
7 8 9 10 ...
That's the problem: you have a factor, hence producing 40886 parallel
boxplots with a median line only in each one:
plot(factor(1:2), 1:2)
You have to convert that to a time object, e.g. to POSIXlt via:
A$Timestamp <- strptime(as.character(A$Timestamp), "%Y-%m-%d_%H:%M:%S")
Then it should work rather quickly.
Best,
Uwe Ligges
str(A$Bandwidth.bit.sec.)
int [1:40886] NA 79106 86086 49918 96353 97268 98027 99369 98049
97280 ...
Can you make a reprducible examples available?
You can find the data here:
http://people.ee.ethz.ch/~hoferr/download/data.csv
The script I have so far:
http://people.ee.ethz.ch/~hoferr/download/draw_graph.R
The same error occurs if I start a new R session and enter these two
commands:
A <- read.csv('data.csv')
plot(A$Timestamp, A$Bandwidth.bit.sec., xlab = "Timestamp", ylab =
"Bandwidth [bit/s]", ylim = quantile(A$Bandwidth.bit.sec., c(0, .99),
na.rm = TRUE))
Best regards
Ramon
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
