The with function will let you use shorthand column references and sum will count TRUE results from the expression(s). As @mnel pointed out, you can also do: The benefit of that is that you can do: And, the behaviour matches Stata’s count almost exactly (syntax notwithstanding).
In general, to provide your own formula you should use arguments x and y that will correspond to values you provided in ggplot() – in this case x will be interpreted as x.plot and y as y.plot. You can find more information about smoothing methods and formula via the help page of function stat_smooth() as it is the default stat used by geom_smooth(). If you are using the same x and … Read more
is the code to send CTRL+L to the console, and therefore will clear the screen. Far better than just sending a whole lot of returns.
Then tell read.table not to use row.names: and now your rows will simply be numbered. Also look at read.csv which is a wrapper for read.table which already sets the sep=’,’ and header=TRUE arguments so that your call simplifies to
Also check complete.cases : na.omit is nicer for just removing all NA‘s. complete.cases allows partial selection by including only certain columns of the dataframe: Your solution can’t work. If you insist on using is.na, then you have to do something like: but using complete.cases is quite a lot more clear, and faster.
It might be that you have a character or factor, and it’s expecting a numeric vector for conversion from unix time :
The default for the parameter stringsAsFactors is now default.stringsAsFactors() which in turn yields FALSE as its default. Assuming your list of lists is called l: The above will convert all character columns to factors, to avoid this you can add a parameter to the data.frame() call:
I have a data.frame of 10 Variables in R. Lets call them var1 var2…var10 I want to find correlation of one of var1 with respect to var2, var3 … var10 How can we do that? cor function can find correlation between 2 variables at a time. By using that I had to write cor function for each Analysis
Trying ?max, you’ll see that it actually has a na.rm = argument, set by default to FALSE. (That’s the common default for many other R functions, including sum(), mean(), etc.) Setting na.rm=TRUE does just what you’re asking for: If you do want to remove all of the NAs, use this idiom instead: A final note: Other functions (e.g. table(), lm(), and sort()) have NA-related arguments that use different … Read more
These errors mean that the R code you are trying to run or source is not syntactically correct. That is, you have a typo. To fix the problem, read the error message carefully. The code provided in the error message shows where R thinks that the problem is. Find that line in your original code, … Read more