大约有 41,200 项符合查询结果（耗时：0.0349秒） [XML]
Changing column names of a data frame
...
Use the colnames() function:
R> X <- data.frame(bad=1:3, worse=rnorm(3))
R> X
bad worse
1 1 -2.440467
2 2 1.320113
3 3 -0.306639
R> colnames(X) <- c("good", "better")
R> X
good better
1 1 -2.440467
2 2 1.320113
3 3 -0.306639
You can also...
Python: What OS am I running on?
...
answered Aug 5 '08 at 3:27
Louis BrandyLouis Brandy
15.1k33 gold badges3333 silver badges2929 bronze badges
...
Django: Set foreign key using integer?
...
answered May 17 '10 at 3:44
Will HardyWill Hardy
12.8k55 gold badges3838 silver badges4141 bronze badges
...
How do DATETIME values work in SQLite?
...
edited Sep 18 '14 at 18:13
gobernador
5,12333 gold badges2727 silver badges5050 bronze badges
answered ...
Is a Python dictionary an example of a hash table?
... |
edited Jun 26 '15 at 3:13
zvyn
62688 silver badges1616 bronze badges
answered Sep 22 '08 at 13:23
...
Python logging not outputting anything
...
murgatroid99
13.9k77 gold badges5050 silver badges8787 bronze badges
answered Aug 10 '11 at 19:12
Omri BarelOmri Ba...
How to get the host name of the current machine as defined in the Ansible hosts file?
...
3 Answers
3
Active
...
How do I convert a string to a double in Python?
...
3 Answers
3
Active
...
Adding Xcode Workspace Schemes to Version Control
...
|
edited Sep 13 '17 at 6:01
user2067021
3,5793232 silver badges4040 bronze badges
answered A...