similar to: Data Frame Manipulation using function

Displaying 20 results from an estimated 4000 matches similar to: "Data Frame Manipulation using function"

2010 Jul 01
4
Index of Character
Hi, I am a newbie to R and this may be too simple to ask. I am trying to find out a string function in R that returns the index of a character. For e.g. indexOf("Test1234", '4') would return 8. Is there a similar function in R. I tried searching the documentation and could find other useful string functions, but not the index function. Thanks in advance. Regards, Harsh
2006 Mar 16
1
Patch: patches for smbmount opton documentation ( smbmount.8.xml )
Hi, I use samba on Linux 2.6 and 2G over size file sharing. It seems smbmount '-o lfs' need to use with large file. but default man page doesn't say this option. I want to edit smbmount.8.xml for lfs and unicode option. I believe using mount.cifs is right way on latest Linux. But one of the implementation smb_clients tools take this lazy option. Is it right way to change of man page
2010 Aug 12
2
Append to csv without header
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(), "/",
2009 Oct 24
6
Working with ListCtrl and ListItem
Hi List, I''m trying to get my ListCtrl to work. Currently I''ve managed to fill my ListCtrl with items, but I think it''s not the most beautiful way: class MyList < Wx::ListCtrl def initialize(parent, *args) super(parent, :style => Wx::LC_REPORT|LC_HRULES ) create_layout fill_list end def create_layout self.insert_column(0, "Name")
2010 Jul 25
1
Left Outer Join 2 DF's on Multiple Conditions
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
2010 Jul 22
1
Updating a Data Frame
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
2007 Jul 27
1
Wx::ListItem data
Hi all, i have a question: i need a Wx::ListItem to wrap my content but i get a strange result... irb(main):001:0> require ''wx'' => true irb(main):002:0> li = Wx::ListItem.new => #<Wx::ListItem:0x281610c> irb(main):003:0> li.set_data(3) => nil irb(main):004:0> li.get_data => 7 any hint? thank you, fabio.
2010 Jul 12
1
Comparison of two very large strings
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
2010 Jun 18
1
Error: cannot allocate vector of size 31.8 Mb
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]]
2010 Jul 20
1
Error using sqldf
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
2007 May 01
1
How to insert item to ListCtrl
The only way I know to use ListCtrl is to call ListCtrl#set_item_count and define a callback function on_get_item_text(item, col) How can I insert Listitem one by one, that each Listitem is composed with several string -- flyerhzm@hotmail.com _______________________________________________ wxruby-users mailing list wxruby-users@rubyforge.org http://rubyforge.org/mailman/listinfo/wxruby-users
2010 Jul 28
1
Reading timestamp column from MySQL
Hi, I am reading a SQL (MySQL) table in R data frame. When I read in the table that has a timestamp data-type field, R gives it the following format:- 1.236887e+12 So when I want to manipulate a column with timestamp = 1236887146615 It returns me multiple rows, as many timestamps gets converted to same value: 1.236887e+12 Any ideas of how this could be dealt with, so that I can get the
2010 Aug 11
1
Bigmemory: Error Running Example
Hi, I am trying to run the bigmemory example provided on the http://www.bigmemory.org/ The example runs on the "airline data" and generates summary of the csv files:- library(bigmemory) library(biganalytics) x <- read.big.matrix("2005.csv", type="integer", header=TRUE, backingfile="airline.bin", descriptorfile="airline.desc",
2006 Mar 28
3
ListItem patches
Hi Attached, patches to implement ListItem. This class, in wxruby 0.6.0, allows styling of individual items in a ListCtrl, via a particularly clunky API. In disambiguating the overloaded ListCtrl#set_item method it introduces one non backwards-compatible change. I''ve followed the WxPython convention as described in the Wx class ref, renaming set_item(index, col, string, imageid) to
2007 Jan 12
9
Nil object in E1 capture the order
I''m following the depot application in the rails bible Agile Web Development with Rails. In interation E1 NoMethodError in Admin#checkout Showing app/views/admin/checkout.rhtml where line #12 raised: You have a nil object when you didn''t expect it! You might have expected an instance of Array. The error occured while evaluating nil.include? Extracted source (around line #12):
2009 Oct 10
1
documentation bug?
Hi, I'm thoroughly RTFM'ing in order to find out what I'm doing wrong <http://lists.samba.org/archive/samba/2009-October/thread.html#151046> and I noticed that links from the *Samba-HOWTO-Collection* to the *manpages-3* don't work... the problem is that both documentation sets are on different directories but links don't include a path (nor absolute, nor relative).
2007 Jun 15
0
Branch 'as' - 4 commits - libswfdec/swfdec_as_frame.c libswfdec/swfdec_as_object.c libswfdec/swfdec_player.c
libswfdec/swfdec_as_frame.c | 3 ++- libswfdec/swfdec_as_object.c | 3 ++- libswfdec/swfdec_player.c | 16 ++++++++++------ 3 files changed, 14 insertions(+), 8 deletions(-) New commits: diff-tree 51bdd4e30a331ac9d4c21748097323187eed89f9 (from e415c0893f4316b99bbec0eb418b9664efee2b99) Author: Benjamin Otte <otte at gnome.org> Date: Fri Jun 15 19:38:26 2007 +0200 mark the
2006 Mar 25
2
Calling an action in another controller
I have two controllers, one for lists and one for list items. When I''m viewing a list I''d like to have a link to create list items within that list. How do I go about calling an action in the listitems controller to create a new item within that specific list? Thanks -- Posted via http://www.ruby-forum.com/.
2010 Feb 26
2
Routing Error using Paperclip
For some reason I can''t figure out why I am getting a routing error when I add Paperclip support. I have another test app when similar code is working. I created a new test app first without Paperclip support and it was doing the CRUD operation fine. However when I added Paperclip support I get the following error? Routing Error user_url failed to generate from
2006 Nov 15
0
[740] trunk/wxruby2: API - Make ListCtrl#get_item return a ListCtrl item corresponding to a row and
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