search for: caliculating

Displaying 8 results from an estimated 8 matches for "caliculating".

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2009 Jun 08
2
problem with bulk insert into a *.csv file
Hi all, I am trying to create a "index.csv" with caliculating different types of caliculations . In that i have to caliculate on 10,000 studies and have to insert many no of rows more than 500,000 for that right now I am inserting every row after caliculating and doing data.frame but its taking much time to create that index.csv is there any thing like bulk...
2010 Mar 09
2
Problem with mean
Hi all, I got one intresting problem with caliculating mean that is while i am taking mean of values *0.6, -0.8, 4, -3.8* using *val<-c(0.6, -0.8, 4, -3.8)* *mean(val)* it given result as *2.775558e-17* but the actual result is *"0"* can any one suggest how can I get correct mean result in this case can any one suggest how I can far...
2009 Jan 20
2
problem with writing data to *.xls file
Hi all, I read data from *.xls file and i did some caliculations on that data and now i have to create a column in the same .xls file and i have to insert the data in to the consicutive rows related to the previous data i tried it with *write.xls() *but the thing is it deleted all the columns previously presented in that file and it created a column and inserted data can any one suggest what to do
2009 Feb 02
2
parsing problem
Hi all, I am trying to parse a vector for caliculating minimum in that vector the vector having values like 1 Kontrolle 2 Placebo 3 125mg/kg 4 250mg/kg 5 500mg/kg 6 1000mg/kg hear i tries for comverting it into numeric with using "as.numaric()" function but i got values like 5 6 2 3 4 1 it gi...
2009 Jun 22
2
problem with checking wether file is present or not
Hi all, I have a problem with checking File is present in the directory or not like I have a sequence of files in one folder I have to take each file in order and have to caliculate on those files data but in order some files are missing for that I have to check and load those files for that I am using condition like if(file.exists(findings)==TRUE){} its giving results for files which are
2009 Jan 23
1
problem in appending data into*.csv file
Hi all, I got a problem with appending data into the *.csv file like abc<-read.csv("bbb.csv") # reading data from one csv file abc1<-mean(subset(abc,Group=="A")) hear i have to creat a .csv file and in that i have to create column's with names *group, mean* and farther i have to caliculate for Groups:-A, B, C, D, F and i have to append data to consicutive rows of
2009 Mar 19
1
problem with Dates
Hi all, I am strugling with date formates and caliculating diferent operations like different between 2 dates and getting minimum in vector of dates that is i m working with dates in formate "6/22/1992 12:00:00 AM" and the vector is [1] 6/4/1992 12:00:00 AM 2/13/1992 12:00:00 AM 6/19/1992 12:00:00 AM [4] 2/11/1992 12:00:00 AM...
2010 Jan 12
1
Problem with toString
Hi all, I got a problem with * "toString()"* function its behaving odd in some times most of the times its giving correct results but in peculier cases its giving results like *"愭]"* especially while i am working with c# +R-project thats also after getting some error like after trying to caliculate "*mean("NA")" * can any one help me why its