大约有 42,000 项符合查询结果（耗时：0.0509秒） [XML]
Remove an entire column from a data.frame in R
...enome <- NULL
> head(Data)
chr region
1 chr1 CDS
2 chr1 exon
3 chr1 CDS
4 chr1 exon
5 chr1 CDS
6 chr1 exon
As pointed out in the comments, here are some other possibilities:
Data[2] <- NULL # Wojciech Sobala
Data[[2]] <- NULL # same as above
Data <- Data[,-2] ...
rgdal package installation
...
tflutre
2,76444 gold badges3535 silver badges5151 bronze badges
answered Mar 6 '13 at 13:42
jubajuba
41k1...
is guava-libraries available in maven repo?
...
Starting from r03, Guava releases may be found in the central Maven repository.
You may include Guava by adding the following dependency to your POM:
<dependency>
<groupId>com.google.guava</groupId>
<artifactId...
LEFT OUTER JOIN in LINQ
...
Multinerd
43233 silver badges1616 bronze badges
answered Aug 5 '10 at 10:15
ajay_whizajay_whiz
...
Spring MVC @PathVariable getting truncated
...
answered Aug 19 '10 at 22:03
earldouglasearldouglas
12.2k55 gold badges3434 silver badges4747 bronze badges
...
How to calculate moving average without keeping the count and data-total?
...
93
You can simply do:
double approxRollingAverage (double avg, double new_sample) {
avg -= av...
How to create a shared library with cmake?
...cify the minimum required version of cmake
cmake_minimum_required(VERSION 3.9)
You should declare a project. cmake says it is mandatory and it will define convenient variables PROJECT_NAME, PROJECT_VERSION and PROJECT_DESCRIPTION (this latter variable necessitate cmake 3.9):
project(mylib VERSIO...
How do I access command line arguments in Python?
... |
edited Aug 1 '16 at 20:36
yiwei
3,23077 gold badges3030 silver badges5050 bronze badges
answered Oct ...
python max function using 'key' and lambda expression
...xample 2: Applying max to a list of tuples.
>>> lis = [(1,'a'), (3,'c'), (4,'e'), (-1,'z')]
By default max will compare the items by the first index. If the first index is the same then it'll compare the second index. As in my example, all items have a unique first index, so you'd get th...
Batch equivalent of Bash backticks
...
53
You can do it by redirecting the output to a file first. For example:
echo zz > bla.txt
set...