search for: wiedenhoeft

Dear all, I apologize if this is a FAQ (seems a bit like one, but I didn't find anything). I'm looking for an easy way to cut one value out of a vector and shorten the vector accordingly. Something like: x <- c(1, 1, 0, 6, 2) throwaway(x[3]) which will return x = 1 1 6 2, with length(x) = 4. I know one could do this by hand, but then one would have to create a second vector y in a

Hi there, I rejoiced when I realized that you can use Perl regex from within R. However, as the FAQ states "Some functions, particularly those involving regular expression matching, themselves use metacharacters, which may need to be escaped by the backslash mechanism. In those cases you may need a quadruple backslash to represent a single literal one. " I was wondering if that is

Hi, I have two curves that are best displayed using a logarithmic y-axis. I want to plot the difference of these curves, which means I would need a log scaling on both the negative and the positive side (i.e. the y-axis should be -100 -10 -1 0 1 10 100). Zero values should not be discarded. Is there an easy way to do that? Thanks, John

Dear all, I'm sorry I have to bother you with this newbie stuff. Within a loop I obtain pairs of values x <- c(a, b). An empty set M is defined before the loop (as a list or whatever). Now I want to do the following: if there is a vector y in M that contains at least one of the values of x, then x shall be concatenated to y. If y doesn't contain any of the values in x, then x shall

Hi there, I guess this must be a standard issue, but I'm starting to go crazy with it. I simply want a plot with the x axis being logarithmic, having labels 1, 10, 100..., and ten unlabelled ticks between each of them - just as they introduce logarithmic axis at school. I've played around a bit with log="x", xlog=T (where exactly is the difference here?), xaxp, and xaxt

Hi there, I'm having myself a hard time writing an algorithm for finding patterns within a given melody. In a vector I'd like to find ALL sequences that occur at least twice, without having to check all possible patterns via pattern matching. I finally found a solution in a style that I'm used from C, i.e. calling one function from within another. GNU R doesn't seem to like that,

...tats (Prof Brian Ripley) 86. grDevices package (amna khan) 87. Re: Displaying R, N, Z-symbols with expression (Paul Murrell) 88. Naming elements of a list (Thomas L Jones, PhD) 89. Re: Displaying R, N, Z-symbols with expression (David Winsemius) 90. Re: How can I save a plot ? (John Wiedenhoeft) 91. Odp: t.test : extracting Error (Petr PIKAL) 92. Re: Naming elements of a list (Bernardo Rangel Tura) 93. Re: grDevices package (Uwe Ligges) 94. Re: Plotting + saving to file on Linux (peter360) 95. A installation problem that needs your supports. (PING-SHAN_CHEN at promos.com....