You can use ifelse, like so check if foo meets your criteria and then go ahead and assign it to pe94.person$H03 directly. I find it safer to assign it a new variable and usually use that in subsequent analysis.
The error happens because of you are trying to map a numeric vector to data in geom_errorbar: GVW[1:64,3]. ggplot only works with data.frame. In general, you shouldn’t subset inside ggplot calls. You are doing so because your standard errors are stored in four separate objects. Add them to your original data.frame and you will be … Read more
In base R the function lag() is useful for time series objects. Here you have a dataframe and the situation is somewhat different. You could try the following, which I admit is not very elegant: An alternative consists in using the Lag() function (with capital “L”) from the Hmiscpackage:
As @thijs van den bergh points you to, Is one way to do this. Your error comes from trying to make a data.fr
I got this error because of an issue with the parallel computing back-end for foreach/dopar. You may have some parallel computing going on in the background that is not getting cleaned up fully between runs. The easiest way I have found to fix it is to call this function: This function is from Steve Weston’s … Read more
I’m going to attempt to explain this without making any mistakes, but I’m betting this will attract a clarification or two in the comments. A data frame is a list. When you subset a data frame using the name of a column and [, what you’re getting is a sublist (or a sub data frame). If you want … Read more
Neither. A vector does not have a dimension attribute by default, it only has a length. If you look at the documentation on matrix arithmetic, help(“%*%”), you see that: Multiplies two matrices, if they are conformable. If one argument is a vector, it will be promoted to either a row or column matrix to make the … Read more
I think you want tidyr rather than dplyr: Using this, you can specify your groupings – and you can add on select(-group) to remove them later.
Install GNURoot from Google Play Install Gnuroot Wheezy from Google Play. See http://www.linux-magazine.com/ Online/Blogs/Productivity-Sauce/GNURoot-Linux-on-Android-No-Root-Required for more help. Update the package repositories (twice!):apt-get update apt-get update Block updates to system Perl:apt-mark hold perl-base Install R:apt-get install r-base Install all available cran packages from the Debian repositories:apt-get install r-cran* Start R from the command line:R source http://www.r-ohjelmointi.org/?p=1434
The truth is that objects in R don’t have names per-se. There exists different kinds of environments, including a global one for every process. These environments have lists of names, that point to various objects. Two different names can point to the same object. This is best explained to my knowledge in the environments chapter … Read more