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How to succinctly write a formula with many variables from a data frame?
...er.
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 ~ . - x3, data = d)
Technically, . means all variables not a...
How can I validate a string to only allow alphanumeric characters in it?
...
183
Use the following expression:
^[a-zA-Z0-9]*$
ie:
using System.Text.RegularExpressions;
Reg...
adb shell command to make Android package uninstall dialog appear
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178
You can do it from adb using this command:
adb shell am start -a android.intent.action.DELETE -...
VS2010 and IE10 Attaching the Script debugger to process iexplore.exe failed
... IE
In elevated cmd prompt run this command:
regsvr32.exe "%ProgramFiles(x86)%\Common Files\Microsoft Shared\VS7Debug\msdbg2.dll"
(or %ProgramFiles% on a 32-bit OS)
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Removing the fragment identifier from AngularJS urls (# symbol)
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Eugene
4,08477 gold badges4949 silver badges7777 bronze badges
answered Feb 8 '13 at 11:17
Maxim GrachMaxim Gra...
How to organize large R programs?
...ction 6. Otherwise, I tend to use defaults in Emacs' ESS mode.
Update 2008-Aug-13: David Smith just blogged about the Google R Style Guide.
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How does Go update third-party packages?
...se was looking.
– Dan Anderson
Apr 18 '14 at 20:11
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Is it not possible to stringify an Error using JSON.stringify?
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187
You can define a Error.prototype.toJSON to retrieve a plain Object representing the Error:
if ...