I need some help with sub-setting my data.  I am trying to divide a data frame into multiple data frames based on the year collected, and stored in a list with each new data frame labeled with "year X" where X is the year the data was collected.  When I run my current code I get nine error messages stating
"In one_year[name] <- myear :  number of items to replace is not a multiple of replacement length"What I have so far is:
Below is my code, the data frame mydat, and what I would like the final product to look like.  I would appreciate any help or suggestions on what I am doing wrong.
Thanks,
Tim
 
 
one_year<-list()
for (i in min(mydat$Year):max(mydat$Year)) #Loops from first to last year in dataset
{
myear<-mydat[mydat$Year==i,]
name<-paste("Year",i)
one_year[name]<-myear
}
 
 
mydat:
Year Month Day          number other   Ind1      Ind2       Ind3   Ind4
1985     8  13             1     1       0         0          0      0
1986     8   5             2     3       0         0          0      0
1991     4  24             3     0       0         0          0      0
1991     4  25             4     0       0         0          0      0
1991     8   2             5     0       0         0          0      0
1991     8   6             6     0       0         0          0      0
1991     9   4             7     2       0         0          0      0
1991     9   9             8     4       0         0          0      0
1991    12  16             9     0       0         0          0      0
1992     3  18            10     1       0         0          0      0
1992     5  13            11     0       0         0          0      0
1992     7  31            12     1       0         0          0      0
1992     8  19            13     0       0         0          0      0
1992    10  14            14     2       0         0          0      0
1992    10  30            15     4       0         0          0      0
1992    11  11            16     2       0         0          0      0
1992    11  20            17     0       0         0          0      0
1992    12   5            18     0       0         0          0      0
1992    12   9            19     3       0         0          0      0
1993     1  24            20     5       0         0          0      0
 
 
What I would like is:
Year1985
1985     8  13             1     1       0         0          0      0

Year 1986
1986     8   5             2     3       0         0          0      0

Year 1991
1991     4  24             3     0       0         0          0      0
1991     4  25             4     0       0         0          0      0
1991     8   2             5     0       0         0          0      0
1991     8   6             6     0       0         0          0      0
1991     9   4             7     2       0         0          0      0
1991     9   9             8     4       0         0          0      0
1991    12  16             9     0       0         0          0      0
ect.

 


      
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