ggplot with geom_tile

Dear Frederic,
 
No this was not the problem, the problem are horizontal and vertical white lines in the figure. But the problem is gone when I save the figure and reopen it (in another program), so I think the problem is only with my direct plot outputs. 
Thanks for your help.
 
Kind regards,
Saskia

________________________________

From: Frederic Andrieu [mailto:fandrieu at mango-solutions.com]
Sent: Fri 09/12/2011 12:43
To: Pelt van, Saskia (KNMI)
Cc: r-help at r-project.org; Hiemstra, Paul (KNMI)
Subject: RE: [R] ggplot with geom_tile



Dear Saskia,

If you mean the grid lines around the edge then they can be removed by using the following:

p <- ggplot(tot, aes(x=temp, y=precip,group=dis))
p+geom_tile(aes(fill=dis)) + scale_fill_gradientn(colours=cols) +
scale_x_continuous(expand = c(0,0)) +
scale_y_continuous(expand = c(0,0))

I hope this helps

I remain at your disposal should you have any questions.

Best regards,

Frederic Andrieu

M: +44(0)07813 526 123
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F: +44 (0)1249 767 707
www.mango-solutions.com
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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 Paul Hiemstra
Sent: 09 December 2011 11:23
To: Pelt van, Saskia (KNMI)
Cc: r-help at r-project.org
Subject: Re: [R] ggplot with geom_tile

Dear Saskia,

Thank you for the reproducible example, that helps a lot. I pasted you
code into R and got a perfectly fine image. You need to provide us with
your sessionInfo(). Mine is listed at the end of the mail. I seem to
remember having this problem with R 2.12. Therefore updating R might be
a good option.

hope this helps,
Paul

sessionInfo()

R version 2.13.0
(2011-04-13)                                                                                      

Platform: i686-pc-linux-gnu
(32-bit)                                                                               

                                                                                                                   

locale:                                                                                                            

 [1] LC_CTYPE=en_US.utf8     
LC_NUMERIC=C                                                                        

 [3] LC_TIME=en_US.utf8      
LC_COLLATE=en_US.utf8                                                               

 [5] LC_MONETARY=C           
LC_MESSAGES=en_US.utf8                                                              

 [7] LC_PAPER=en_US.utf8     
LC_NAME=C                                                                           

 [9] LC_ADDRESS=C            
LC_TELEPHONE=C                                                                      

[11] LC_MEASUREMENT=en_US.utf8
LC_IDENTIFICATION=C                                                                 

                                                                                                                   

attached base
packages:                                                                                            

[1] grid      stats     graphics  grDevices utils     datasets
methods                                            
[8]
base                                                                                                           

                                                                                                                   

other attached
packages:                                                                                           

[1] ggplot2_0.8.9  proto_0.3-9.2  reshape_0.8.4  plyr_1.6     
fortunes_1.4-2                                     
                                                                                                                   

loaded via a namespace (and not
attached):                                                                         

[1]
digest_0.5.1

Dear R-users,

I am trying to make a plot with ggplot-geom_tile(), but cannot remove some unwanted (white) lines through my plot.

Below a reproducible example:

#####
library(ggplot2)
tot=as.data.frame(rep(seq(-50,50,5),each=21))
names(tot)="precip"
temp=rep(seq(-5,5,0.5),21)
tot$temp=temp

disc=array(dim=c(21,21)) 
  for(i in 1:21){
    for(y in 1:21){
temp<- rev(seq(10000+((i-1)*500),12000+((i-1)*500),100))
disc[i,y]=temp[y]
  }}
 
disc1=t(disc)
bla=as.vector(disc1)
tot$dis=bla

cols=c("darkred"," white"," darkblue")

p <- ggplot(tot, aes(x=temp, y=precip,group=dis))
p+geom_tile(aes(fill=dis)) + scale_fill_gradientn(colours=cols)
###

This creates the plot that I want, but with white horizontal and vertical lines that I do not need. I have tried different things, but have not found the solution. Can you help me with this problem?

Kind regards,

Saskia van Pelt

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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
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--
Paul Hiemstra, Ph.D.
Global Climate Division
Royal Netherlands Meteorological Institute (KNMI)
Wilhelminalaan 10 | 3732 GK | De Bilt | Kamer B 3.39
P.O. Box 201 | 3730 AE | De Bilt
tel: +31 30 2206 494

http://intamap.geo.uu.nl/~paul
http://nl.linkedin.com/pub/paul-hiemstra/20/30b/770

______________________________________________
R-help at r-project.org mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
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