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qplot with many files (each one curve)

7 messages · Jonas Stein, Ben Bolker, Nicolai Schneider +3 more

Jonas Stein
# 
Hi,

i would like to plot a few hundred .csv files. 
Each file contains one curve with x,y values to plot.

I have been searching for "gnu r read many files qplot" 
and similar words. I found for loops that use assign to generate 
one variable containing a dataframe.

When i uesed the classic "plot' command i could add 
the curves with something like

for... {
data<-read.csv....
points(data$x, data$y, col=myrainbow, type="l")
}

How would you solve it in ggplot?

Kind regards,
Ben Bolker
# 
Jonas Stein <news <at> jonasstein.de> writes:
I would use something along the lines of

L <- lapply(list.files(pattern),read.csv)

  to read the files into a list.

Something like

L2 <- mapply(function(i,x) {
    data.frame(file=i,x) },seq_along(L),L)

to add an index column to each data frame

L3 <- do.call(rbind,L2)

to combine them all into a single data frame

and

ggplot(L3,aes(x=x,y=y,group=file))+geom_line()
Nicolai Schneider
# 
Hello,

I?m really sorry to bother you with this problem but it took me a whole day searching for a solution.

I want the y axis labels positioned closer to the y axis, by default they are partly outside the window.


Example:

x <- as.zoo(EuStockMarkets)

par(las=1)

plot.zoo(x, type="l", main="", xlab="", yaxt="n", xaxs="i")
title(main="Title", xlab="index")

par(las=0)


Thanks in advance!


Best,
Nico
David Winsemius
#
On Sep 10, 2012, at 8:24 AM, Nicolai Schneider wrote:

            

      
      
      
    

        
I could be wrong, but I think you need to specify xaxt="n" to suppress the standard axis and then use axis to supply your own choices.

  
    

      
      
    

  


  


      

    

    

      
      

        


  

        

      MacQueen, Don
    

    

      
      #
    

  


  

      
Either way, there is a par() parameter to control the axis and label title
position.
Look at the entry for 'mgp' in ?par

-Don

  
    

      
      
    

  


  


      

    

    

      
      

        


  

        

      Jose Iparraguirre
    

    

      
      #
    

  


  

      
Hi Nico,

Far from the most elegant solution, at least it works and will give you plenty of freedom to choose where to place the labels:

            

      
      
      
    

        
Hope it helps,

Jos?



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-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Nicolai Schneider
Sent: 10 September 2012 16:24
To: r-help at stat.math.ethz.ch
Subject: [R] Position of y axis labels in plot graphic

Hello,

I?m really sorry to bother you with this problem but it took me a whole day searching for a solution.

I want the y axis labels positioned closer to the y axis, by default they are partly outside the window.


Example:

x <- as.zoo(EuStockMarkets)

par(las=1)

plot.zoo(x, type="l", main="", xlab="", yaxt="n", xaxs="i")
title(main="Title", xlab="index")

par(las=0)


Thanks in advance!


Best,
Nico
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      Nicolai Schneider
    

    

      
      #
    

  


  

      
Thanks a lot to everyone who gave my me advice.

Btw, the most elegant solution came from a German R user who "simply" extended the plot.zoo function by the parameter line (ie the distance of the y labels from the y axis).

Here the URL of his posting and the code, unfortunately his comments are written in German only:

http://forum.r-statistik.de/viewtopic.php?f=9&t=2819

Thanks again,
Nico

Am 11.09.2012 um 13:08 schrieb Jose Iparraguirre: