hello,
1. when i get a column data from a table, it always follows with the level. 
for exmaple if i have a table = (v1, v2), and table$v1 = (1, 2, 3); and col1 <- table$v1;
then there is level assign to the table, with 1 is level1 and 2 is level2 3 is level3 ect.
however, when are want to get col1[3], which is 3, by when i add the col1[3] to a list, the is actually appears as 33 instead of because the level for 3 is 3. In fact, the data i want is 3 not 33, so i don't want any levels come with the data each time when read from the column in the table. how can i do that?
 
2. how can i read from a file from a specific folder, and how i create a folder and write a file to that folder?
 
 
Thank you very much.
 
C-Ming
 
April 14,2005

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