[R] LSD comparison

arun smartpink111 at yahoo.com
Thu Jun 27 20:05:05 CEST 2013

Hi,Without any reproducible example or code, it is difficult to understand the problem.  Did you load the package?
Using the example in ?LSD.test()
      model<-aov(yield~virus, data=sweetpotato)
      out <- LSD.test(model,"virus", p.adj="bonferroni",
      main="Yield of sweetpotato\ndealt with different virus")

Study: Yield of sweetpotato
dealt with different virus

LSD t Test for yield 
P value adjustment method: bonferroni 

Mean Square Error:  22.48917 

virus,  means and individual ( 95 %) CI

      yield  std.err r       LCL      UCL Min. Max.
cc 24.40000 2.084067 3 19.594134 29.20587 21.7 28.5
fc 12.86667 1.246774 3  9.991602 15.74173 10.6 14.9
ff 36.33333 4.233727 3 26.570341 46.09633 28.0 41.8
oo 36.90000 2.482606 3 31.175100 42.62490 32.1 40.4

alpha: 0.05 ; Df Error: 8
Critical Value of t: 3.478879 

Least Significant Difference 13.4704
Means with the same letter are not significantly different.

Groups, Treatments and means
a      oo      36.9 
a      ff      36.33 
ab      cc      24.4 
b      fc      12.87 

R version 3.0.1 (2013-05-16)
Platform: x86_64-unknown-linux-gnu (64-bit)

 [1] LC_CTYPE=en_CA.UTF-8       LC_NUMERIC=C              
 [3] LC_TIME=en_CA.UTF-8        LC_COLLATE=en_CA.UTF-8    
 [7] LC_PAPER=C                 LC_NAME=C                 
 [9] LC_ADDRESS=C               LC_TELEPHONE=C            

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] agricolae_1.1-4 stringr_0.6.2   reshape2_1.2.2 

loaded via a namespace (and not attached):
[1] plyr_1.8    tcltk_3.0.1 tools_3.0.1


Dear Sir 
I'm a student in the university and just start to use R for agricultural research analysis. 
I know my question is an old question, but I don't find any clear explanation about  my problem via internet. 
I'm sorry if my email is disturbing all of you. 
I install R with version 3.0.1 and no problem with anova analysis, 
my problem is I can't perfprm LSD comparison, it is appearing "Error: 
could not find function "LSD.test" 
I think I'm already installed "agricolae package" on my system. I attach some picture as shown on my screen. 
if possible please guide me  how to solve the problem. (how to check if agricolae package is completely installed?) 
Thanks you very much for reading

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