I was asked for the following information and hope it might help those who
could answer my question...

 

To import the table I used:

AsMi05test=read.csv("C:/AsMi_Site05_1998.csv")

 

> str(AsMi05test)

`data.frame':   12 obs. of  8 variables:

 $ X                          : Factor w/ 6 levels "Dead","Dormant",..: 5 6 3
4 2 1 5 6 3 4 ...

 $ Vegetative                 : num  0.25 0.50 0.17 0.08 0.00 ...

 $ Vegetative.with.Herbivory  : num  0.13 0.5 0.33 0.67 0 0 0.41 0.5 0 0 ...

 $ Reproductive               : num  0 0 0 0 0 0 0 0 0 0 ...

 $ Reproductive.with.Herbivory: num  0 0 0 0 0 ...

 $ Dormant                    : num  0.08 0 0.33 0.08 1 0 0.06 0 0 0 ...

 $ Dead                       : num  0.42 0.00 0.33 0.17 0.00 ...

 $ End.Date                   : int  1998 1998 1998 1998 1998 1998 1999 1999
1999 1999 ...

 

 

________________________________

From: Michelle DePrenger-Levin 
Sent: Monday, January 28, 2008 11:35 AM
To: 'r-help@r-project.org'
Subject: matrix creation



Hello,



I am trying to create multiple matrices (to run a PVA) but can't import all
of them from a .csv without the numbers treated as labels and not factors.



I can enter the matrix slowly:

Site05_96 <- matrix(c(0.07,0,0.03,0.00,NA,0.00,
0.09,0.166666667,0.31,0.42,NA,0.00,  0.00,0,0.00,0.00,NA,0.00, 

                        0.00,0,0.00,0.00,NA,0.00,
0.26,0.166666667,0.19,0.00,NA,0.00,  0.58,0.666666667,0.47,0.58,0,0.00),

            nrow = 6, ncol = 6, 

            dimnames = list(c("Vegetative", "Vegetative with herbivory",
"Reproductive", 

                        "Reproductive with herbivory", "Dormant", "Dead"),
c("Vegetative", "Vegetative with herbivory", "Reproductive", 

                        "Reproductive with herbivory", "Dormant", "Dead")))



I would like to list all matrices (for all 12 years and all 4 sites) in one
Excel sheet (.csv) and then read each matrix as chucks of 6 rows. However,
when I try this I either get all the values (the %) in quotes (not as
factors) and if I try to force them with as.factor, it no longer seems to be
a matrix. 



AsMi0598test2 <- as.matrix(AsMi05test[1:6,1:6])

  X                             Vegetative Vegetative.with.Herbivory
Reproductive Reproductive.with.Herbivory Dormant

1 "Vegetative"                  "0.25"     "0.13"                    "0"
"0"                         "0.08" 

2 "Vegetative with Herbivory"   "0.50"     "0.50"                    "0"
"0"                         "0.00" 

3 "Reproductive"                "0.17"     "0.33"                    "0"
"0"                         "0.33" 

4 "Reproductive with Herbivory" "0.08"     "0.67"                    "0"
"0"                         "0.08" 

5 "Dormant"                     "0.00"     "0.00"                    "0"
"0"                         "1.00" 

6 "Dead"                        "0.00"     "0.00"                    "0"
"0"                         "0.00"



When I add AsMi0598test2 <- as.factor(as.matrix(AsMi05test[1:6,1:6])) I get
this:

[1] Vegetative                  Vegetative with Herbivory   Reproductive
Reproductive with Herbivory

 [5] Dormant                     Dead                        0.25
0.50                       

 [9] 0.17                        0.08                        0.00
0.00                       

[13] 0.13                        0.50                        0.33
0.67                       

[17] 0.00                        0.00                        0
0                          

[21] 0                           0                           0
0                          

[25] 0                           0                           0
0                          

[29] 0                           0                           0.08
0.00                       

[33] 0.33                        0.08                        1.00
0.00                       

16 Levels: 0 0.00 0.08 0.13 0.17 0.25 0.33 0.50 0.67 1.00 Dead Dormant
Reproductive ... Vegetative with Herbivory



I want to read all matrices into stoch.projection( ) {popbio}



Thanks for any suggestions. I could enter them all in the .txt document if I
can't read them from the Excel sheet. 



Michelle DePrenger-Levin


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