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HEEELP!!!!

4 messages · Ana María Prieto, Liviu Andronic, David Winsemius +1 more

Original
Ana María Prieto
# 
Hello.
My name is Ana. I?m doing an eology master, and I?m just learning how R
works.
I have a Mac OS X 10.5.6, and I?m tryng to run just a simple ANOVA
nanalyses.
I dowloaded R version 2.10.0, and it seems I have problems with the script.
I don?t know what to do, I?ve already change the languages, be sure of
being
working in the correct directory and doesn?t work

the script is:

#1. example

data01<-read.table("ch01.txt",header=T)

names(data01)

attach(data01)

FERTIL<-factor(FERTIL)

model01<-(YIELD~FERTIL)

summary(model01)

anova(model01)


all my classmates, even those with a mac operator, wrote the same, and it
worked.

When copying the script in the R console, it seems that there is a problem
with the

~ symbol. this symbol is not in the keyboard, so I select it from spetial
characters,

and then i selected with shift an <>key, and still, it doesn?t works

I attached th file with the data. i hope you can help me!!!!!


Ana.
-------------- next part --------------
FERTIL	YIELD	YIELDM	VARIETY	SEX	DBH	FLOWERS	YIELD2
1	6.27	25.12	1	2	174	234	6.27
1	5.36	17.25	1	1	171	110	5.36
1	6.39	26.42	1	2	212	512	6.39
1	4.85	16.08	1	1	187	133	4.85
1	5.99	22.15	1	2	227	1107	5.99
1	7.14	15.92	1	1	274	624	7.14
1	5.08	40.25	2	2	86	8	5.08
1	4.07	35.25	2	2	161	333	4.07
1	4.35	31.98	2	1	285	637	4.35
1	4.95	36.52	2	1	182	225	4.95
2	3.07	43.32	2	2	225	512	3.07
2	3.29	37.1	2	1	133	47	3.29
2	4.04	18.3	3	2	154	164	4.04
2	4.19	22.6	3	2	71	1	4.19
2	3.41	25.9	3	1	133	36	3.41
2	3.75	15.05	3	1	267	524	3.75
2	4.87	28.05	4	2	166	198	4.87
2	3.94	28.55	4	2	145	225	3.94
2	6.28	33.2	4	2	207	548	NA
2	3.15	31.68	4	1	216	272	3.15
3	4.04	30.32	4	2	157	164	4.04
3	3.79	27.58	4	2	87	5	3.79
3	4.56	NA	NA	1	185	133	4.56
3	4.55	NA	NA	1	183	133	4.55
3	4.55	NA	NA	2	193	419	4.55
3	4.53	NA	NA	1	264	442	4.53
3	3.53	NA	NA	1	83	3	3.53
3	3.71	NA	NA	2	300	1482	3.71
3	7	NA	NA	1	242	333	NA
3	4.61	NA	NA	2	316	1138	4.61
NA	NA	NA	NA	2	217	561	NA
NA	NA	NA	NA	1	235	488	NA
NA	NA	NA	NA	2	189	282	NA
NA	NA	NA	NA	1	242	536	NA
NA	NA	NA	NA	2	84	11	NA
NA	NA	NA	NA	2	135	148	NA
NA	NA	NA	NA	1	267	512	NA
NA	NA	NA	NA	2	122	70	NA
NA	NA	NA	NA	2	280	1107	NA
NA	NA	NA	NA	2	295	941	NA
NA	NA	NA	NA	2	139	89	NA
NA	NA	NA	NA	2	165	181	NA
NA	NA	NA	NA	2	81	8	NA
NA	NA	NA	NA	1	190	173	NA
NA	NA	NA	NA	2	68	1	NA
NA	NA	NA	NA	2	314	1091	NA
NA	NA	NA	NA	1	284	561	NA
NA	NA	NA	NA	2	77	3	NA
NA	NA	NA	NA	1	228	312	NA
NA	NA	NA	NA	2	282	1398	NA
Liviu Andronic
# 
Hello
On 11/10/09, Ana Mar?a Prieto <prieto.anamaria at gmail.com> wrote:
For what language is your keyboard designed? If it is for English,
similar to this one [1], try a British English layout, and then the ~
sign will (possibly) be on the "\" button (press shift+\). I'm on
Linux, but I hope it would be similar for Mac.
Liviu

[1] http://www.mrtotes.co.uk/UK_Mac_Keyboard.jpg
David Winsemius
#
On Nov 10, 2009, at 11:24 AM, Ana Mar?a Prieto wrote:

            

      
      
      
    

        
I suspect that the problem is not with the lack of a tilde ("~") or  
the misinterpretation of the special character that you seem to have  
gotten into this mail message, but rather with your failure to type  
the two letters "lm" thusly:

model01 <- lm(YIELD~FERTIL)

I have 3 Macs of varying vintages (one desktop and two laptops) and  
they all have the tilde in the upper left corner just below the escape  
key.

Future submissions to the R-help list should be accompanied by a more  
informative subject line. That sort of "Subject" is considered rude  
(some might even say infantile) behavior in this arena.

-- 
David.

            

      
      
      
    

  
    

      
      
    

  


  


      

    

    

      
      

        


  

        

      Charlie Sharpsteen
    

    

      
      #
    

  


  

      
Ana Mar?a Prieto wrote:

            

      
      
      
    

        
Well, the line:

  model01 <- (YIELD~FERTIL)

Creates an object of class "formula", which is not a model.  A formula only
expresses a relationship between variables, a model consists of a formula
that has been fit to a data set.  The anova() function has no meaning for
formula objects since no data has been fit.  If you wanted a linear model,
use the lm() function to create it:

  model01 <- lm( YIELD ~ FERTIL )

Non-linear functions may be fit using nls() and R has plenty of other
fitting schemes if you should require them.

        
Ana Mar?a Prieto wrote:

            

      
      
      
    

        
On my keyboard the '~' character is accessed by pressing SHIFT-backtick,
where backtick is the key above the "Tab" key and to the left of the "1"
key.  You may have a different keyboard.

        
Ana Mar?a Prieto wrote:

            

      
      
      
    

        
-----
Charlie Sharpsteen
Undergraduate
Environmental Resources Engineering
Humboldt State University