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How to succinctly write a formula with many variables from a data frame?
... a formula to mean all the variables, it is the . identifier.
y <- c(1,4,6)
d <- data.frame(y = y, x1 = c(4,-1,3), x2 = c(3,9,8), x3 = c(4,-4,-2))
mod <- lm(y ~ ., data = d)
You can also do things like this, to use all variables but one (in this case x3 is excluded):
mod <- lm(y ~ . ...
Move entire line up and down in Vim
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edited Feb 16 '10 at 22:47
answered Apr 12 '09 at 14:06
M...
warning about too many open figures
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answered Feb 19 '14 at 15:04
HookedHooked
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How to remove element from array in forEach loop?
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mPrinC
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answered Jul 17 '14 at 20:53
Xotic750Xotic750
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Find the closest ancestor element that has a specific class
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edited Jul 2 '17 at 11:42
answered Nov 20 '14 at 10:43
t...
致PHP路上的“年轻人” - 杂谈 - 清泛网 - 专注C/C++及内核技术
...以月为单位，或以季度。但长期规划，一定给自己按照3~4年为一个阶段去规划。
短期规划，根据当下情况，明确一个较短的周期内要完成哪些事，实现什么目标，并且可以以这个周期为单位，陆续的给自己制定目标，这样当你...
CMake unable to determine linker language with C++
I'm attempting to run a cmake hello world program on Windows 7 x64 with both Visual Studio 2010 and Cygwin, but can't seem to get either to work. My directory structure is as follows:
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Determining complexity for recursive functions (Big O notation)
...ften Big O notation and complexity analysis uses base 2.
void recursiveFun4(int n, int m, int o)
{
if (n <= 0)
{
printf("%d, %d\n",m, o);
}
else
{
recursiveFun4(n-1, m+1, o);
recursiveFun4(n-1, m, o+1);
}
}
Here, it's O(2^n), or exponential, since...
Office在线预览及PDF在线预览的实现方式大集合 - 更多技术 - 清泛网 - 专注...
...时间也非常漫长，这个时间主要是卡在了转换PDF上面。
4、转换完成服务器会遗留大量Excel、Word进程无法正常退出，有一些折中的解决办法，可以在网上搜索。
5、设置非常麻烦，本身微软官方的说法Office软件是客户端程序，在...