Re: [R] Null values in R

Would ?is.null be what you are looking for? -- Jonathan P. Daily Technician - USGS Leetown Science Center 11649 Leetown Road Kearneysville WV, 25430 (304) 724-4480 "Is the room still a room when its empty? Does the room, the thing itself have purpose? Or do we,

Re: [R] Null values in R

Are you talking about NULL or NA that may occur in some data? Can you give an example of what your concern is and what set of operations you want to do. If they are NAs, there are some standard ways that they can be handled. On Mon, Nov 15, 2010 at 9:55 AM, Raji wrote: > > Hi R-helpers , can yo

Re: [R] Null values In R.

paul murima wrote: > > > My problem is largely when i attempt to use correlation for my data... > xcc <- cor(a); > > The error i get is as follows > > Error in cor(a) : missing observations in cov/cor > As Daniel suggested, it is always best to use the function's parameter to handle NULLs

Re: [R] Null values In R.

Hi, for your cor() command you will want to specify the "use" argument as either "complete.obs" or as "pairwise.complete.obs". The difference between the two is that the former only uses those observations for which ALL information in "a" is available, whereas the latter uses information that is av