similar to: Index of Character

Hi all, I have a data frame for which I want to limit the output by checking whether row values for specific column meets particular conditions. Here are the more specific details: I have a function that checks whether an input string exists in a defined list:- checkBaseLine <- function(s){ for (listItem in WHITELIST){ if(regexpr(as.character(listItem), s)[1] > -1){ return(TRUE) } }

RHEL5.3, syslinux 3.75 I tested syslinux "--once" functionality on a vmware image and all was working as expected, then I tried it on a real system and it failed: it got "stuck", it had effect at every boot, I could see the cmdline was never deleted from extlinux.sys. The vmware image used during testing has a virtual IDE disk (/deb/hda), the real system has SATA-AHCI

On Tue, August 15, 2017 8:03 pm, Sami Ketola wrote: > >> On 15 Aug 2017, at 2.50, voytek at sbt.net.au wrote: >> >> >> how do I generate hashed string from my password ? > > use this sql command: > > GRANT SELECT ON vmail TO ?vmail?@?127.0.0.1? IDENTIFIED BY > PASSWORD(?yourpassword?); > > > or if you just want to see the hash: > > SELECT

I have a variable that can have either numeric or character values. When numeric, I take one action; when not-numeric, I take another action. Unfortunately, my approaches are awkward, so I look for others' approaches. To detect a numeric value, I have semi-successfully used two appoaches. I somewhat simplify here using direct character values like "123" rather than a variable. 1.

like: "a" %in% "abcd" TRUE Thanks.

Hi I have this problem where I need to find if there is any numbers in a string, this is no problem if theres only one number per string. I would then simply use the regexpr() funtion togheter with the substring function to extract the number. But regexpr only picks one number per string either from the beginning or the end, but not multiple. Can this be done? And how for example My string <-

I have been trying to write a selector function for Autocompleter.Local that will show a predefined Array and will scroll automatically to the first match. I have had success with with getting my list to populate and show all of the choices, however I cannot get it to scroll to the first match. Since I build the JS Array I can know exactly how many items are in the list going into my selector,

Hello, I'm trying to pull data from a network drive on a windows machine. The location is read into a string <rem> and then used later with a data input command. > rem<- "\\192.192.192.3\Shared\iris1.csv" Warning messages: 1: '\S' is an unrecognized escape in a character string 2: '\i' is an unrecognized escape in a character string 3: unrecognized

Hi, I am writing a function that writes to a csv file for every call. However, for the subsequent calls, I want to append the data to the existing csv file without appending the column names again. I tried searching in the previous posts, but I am stuck with different errors. Here is what I am doing (dataF is a data-frame):- outputFilePath <- paste(getwd(), "/",

Hi, I am trying to execute the following SQL statement using two data frames: tab1, tab2 : Two Tables Select tab1.*, tab2.*, tab1.tobiiTime - tab2.ruiTime as timeDiff, IFNULL(n-m, -9999999) as alwaysIncrement FROM tab1 LEFT OUTER JOIN tab2 On tab1.data1 - tab2.mouseX = 0 And tab1.data2 - tab2.mouseY = 0 I am trying to do the following in R:- *#Getting error here:* data

Hi, I have a global data-frame in my R script. At some point in my script, I want to update certain columns of this data-frame by calling in an update function. The function looks like this: # get events data. This populates a global event data frame in the R-script events <- getEvents(con, eventsFilePath) # events has columns eventid, timeStamp, isSynchronized, timeDiff; with millions of

I need to split a data frame into 3 columns. The column I want to split contains indices of lag (prefix L1 or L2 and suffix 01, 03, 04), station name (shown in the sample data as capitalized G, P and S) and pollutant name. Names with no ?L? prefix or 01/04 suffix are lag 0. Lag 01 is average of lag 0 and 1, and 04 is average of 0 to 4 days. How can one do that in R? I will ignore the other

Full_Name: J Utans Version: 1.1.1 OS: NT4 (SP6) Submission from: (NULL) (155.140.123.250) After grep is called many times (> 250k), with constant strings as patterns, it complains with "invalid regular expression" on calls that worked before (with same pattern and x). At the same time copying to the clipboard does no longer work with "out of memory" error (i.e. when trying

Hi, I have a function in R that compares two very large strings for about 1 million records. The strings are very large URLs like:- http://query.nytimes.com/gst/sitesearch_selector.html?query=US+Visa+Laws&type=nyt&x=25&y=8. .. or of larger lengths. The data-frame looks like:- id url 1

Hi, I need to split a string into 2 strings, with the split point defined by the last occurrence of some substring. I come up with some convoluted code to do so: str = "Chance favors the prepared mind" sub = "e" y = unlist(strsplit(str,sub)) z = cbind(paste(y[-length(y)], sub, sep="", collapse = ""), y[length(y)]); y z z[1] z[2] Is there a simpler way

Hi, I am getting the following error while trying to run an R script: Error: cannot allocate vector of size 31.8 Mb I tried setting up memory.limit(), vsize, etc. but could not make it run. My computer has following configurations:- OS: Windows 7 Processor: Intel Core 2 Duo RAM: 4GB Thanks in advance, Harsh Yadav [[alternative HTML version deleted]]

Hi, I am running a query using sqldf() [package : sqldf]. The query is:- userid <- 5 taskid <- 5 tab1 <- fn$sqldf("SELECT tobiiEvents.data1, tobiiEvents.data2, events.`timestamp` as tobiiTime FROM tobiiEvents INNER JOIN events ON events.eventid = tobiiEvents.eventid WHERE tobiiEvents.subtype = 'MOUSE' AND tobiiEvents.userid = 5 AND tobiiEvents.taskid = 5 ORDER BY

Can't seem to get the code below working. It gets stuck on line 24 inside the function hm; comments show the line in question. The function hm is called by sapply and is at the bottom of the code. Other stuff above line 24 works correctly including the first couple of lines of the function hm. Should I be using a different apply function or am I doing something wrong with xmlTreeParse ?

I'm a great fan of read.table(), but this time the data had a lot of cruft. So I used readLines() and editted the char vector to eventually get something like this: " 23.4 1.5 4.2" " 19.1 2.2 4.1" and so on. To get that into a 3 col numeric table, I first just used: writeLines(data,"tempfile")

Recently working with strings and data I have found a small problem. Windows XP R 1.8.1 Reading data from a "txt file" with readLine. finding a specific line with "grep" command, all OK. but here comes the problem... After finding the correct line(s) i need to find a substring inside each string. In this case "tabs" I think it represented by "\t" in the