similar to: how can i sort a column of data.frame ?

Displaying 20 results from an estimated 1000 matches similar to: "how can i sort a column of data.frame ?"

2008 Jun 08
2
multinormality
is there any function under R that allows me to test the normality of my 92 sumples? -- View this message in context: http://www.nabble.com/multinormality-tp17717230p17717230.html Sent from the R help mailing list archive at Nabble.com.
2008 May 18
2
how can i superpose 2 graphs
Hio i tried to do this by: par(new=TRUE) but the result is one picture but y-axis has 2 diff?rent graduations.how can i correct this?( i want one graduation on y axis). -- View this message in context: http://www.nabble.com/how-can-i-superpose-2--graphs-tp17305355p17305355.html Sent from the R help mailing list archive at Nabble.com.
2008 May 29
2
lm() function
hi, my linear model is y=c+a*x1+b*x2 i tried to found a, c, b by the use of: mymodel<-lm(y~1+x1+x2) where y, x1, x2 are 3 vectors with the same length the result is a=NA.so i want to know where is the problem. -- View this message in context: http://www.nabble.com/lm%28%29-function-tp17546079p17546079.html Sent from the R help mailing list archive at Nabble.com.
2008 May 19
2
i want to export a data.frame to file.xls
in order to export a data.frame to sheet.xls i try: write(df,file="file_name.xls") but when i open it a message appears: "impossible to oppen this file. her format is unvalid" knowen that i work with excel_2007 what is the solution ? -- View this message in context: http://www.nabble.com/i-want-to-export-a-data.frame-to-file.xls-tp17326119p17326119.html Sent from the R
2008 May 18
3
two curves at one graph
i try to use par(new=TRUE) i get them at the same graph but the y_axis and x_axis are drowen with two unevenly graduations that graph become unreadable. -- View this message in context: http://www.nabble.com/two-curves-at-one-graph-tp17307590p17307590.html Sent from the R help mailing list archive at Nabble.com.
2008 May 16
1
(1-alpha)th percentile
hello; firstly, my gratitude to all who help me to find a function that allows me to add confidence interval to my graph. in order to calculate the (1-alpha)th percentile of for exemple an F(df1,df2) distribution i do like this: v<-df(alpha,df1,df2) percentile<-qf(v,df1,df2,alpha) if it is true please alert me , and if it is not what should do then? :handshake: -- View this message in
2008 Feb 12
2
how to specify modes of certain fields in read.table
I have a data file with 50 columns. Among them, there are two coordinates, X and Y X Y 641673.78807 3607080.78438 641436.56207 3607108.30543 641165.28042 3607136.82957 640879.58373 3607116.20568 When I use read.table, it rounds X and Y to the maximal 8 decimal number as. 641673.8 3607081 641436.6 3607108 641165.3 3607137 640879.6 3607116 640683.5 3607105 My question
2008 Feb 11
2
how to generate a column based on other columns in a data frame
HI, I am working on a data set with multiple collections of mosquitoes at sampling sites. Each row represents a collection of individual samples with coordinates for each collection. ... X, Y,... 1 36.435 30.118 2 36.435 30.118 3 36.435 30.118 4 35.329 29.657 5 35.329 29.657 6 36.431 30.111 7 36.431 30.111 8 35.421 29.797 9 35.421 29.797 10 35.421 29.797
2008 May 06
1
substring
I have a data frame such as Name DISC1_5916 DABC2_789 ABCD_1234 I want to substring column Name so that DISC1 DABC2 ABCD ... Thanks. --------------------------------- [[elided Yahoo spam]] [[alternative HTML version deleted]]
2008 Sep 07
1
run optim() on a list
Hi, I am at the end of my wit to figure out how to run the optim function on a list. Basically, I have a data set of three columns as "Site", "Pool" and "Positivity" ( the full data set is copied at the end). I want to run the maximal likelihood estimation separately on subsets split by "Site" data<-read.table(...)
2008 Jan 31
1
decrease amount of ticks on y axis in lattice levelplot
Hi all, How can I decrease the number of ticks on the y-axis in a lattice levelplot()? I have as many ticks displayed on the y-axis as I have columns of data (1000 columns), how can I decrease this amount of ticks, while still properly displaying all the data? Note that I get my data from a matrix object, in which the z-values of the levelplot are the actual values in the matrix, whereas the
2008 May 14
2
is there any graphic function
hello: is there any graphic function under R that allow me to add an interval on the graphic's picture at any place i want. i mean by interval the symbol "|----|" showed verticaly and has as middle the point M with coordinates (yi,ti).please answer me as soon as possible. -- View this message in context: http://www.nabble.com/is-there-any-graphic-function-tp17240811p17240811.html
2013 Feb 23
5
Selecting First Incidence from Longitudinal Data
I have a longitudinal competing risk data of the form: ID COMPL SEX HEREDITY 1 0 1 2 1 0 1 2 1 3 1 2 2 0 0 1 2 1 0 1 2 2 0 1 2 2 0 1 3 0 0 1 3 0 0 1 3 0 0 1 3 0 0 1 3 2 0 1 4 0 1 2 4 0 1
2010 Dec 14
1
rpart - how to estimate the “meaningful” predictors for an outcome (in classification trees)
Hi dear R-help memebers, When building a CART model (specifically classification tree) using rpart, it is sometimes obvious that there are variables (X's) that are meaningful for predicting some of the outcome (y) variables - while other predictors are relevant for other outcome variables (y's only). *How can it be estimated, which explanatory variable is "used" for which of
2008 Jun 05
2
bartlett.test()
i'm trying to test the homogeneity of variance of 92 samples each one contains 3 observations. to use bartlett.test function i have created a (3,92) matrix (named xx): >bartlett.test(xx) this message appears: >Erreur dans bartlett.test.default(xx) : l'argument "g" est manquant, avec aucune valeur par d?faut when i checked the help i have understood that in g i should
2008 Jan 07
1
one question
I had a program voice chat programmed in delphi now i have a programmer making a new one in vb.net he has informed me speex does not work in vb.net applications i don't understand why not can you give some assistance Thanks Hanen -------------- next part -------------- An HTML attachment was scrubbed... URL:
2008 Feb 08
4
how to extract characters from a character string
Hi, I ran into a problem when I complied a dataset with UTM coordinates. For calculating distances between sites, I need to reformat the coordinates from, for example, 32?35.421 N, to 35.421, i.e. I need to delete all digits before symbol ? and a space and N at the end of the string. What functions I should use? Thanks in advance. Weidong Gu, Department of Medicine University of
2008 Jun 16
1
minimizing title's police
in order to minimize the police of the title of my graph i tried to use: >title("nombre de fleurs donn?es journellement par 6 cereus peruvianus du 1/07/02 au 31/09/02",font=0) but this message appears: Erreur dans title("nombre de fleurs donn?es journellement par 6 cereus peruvianus de 1/07/02 au 31/09/02", : valeur sp?cifi?e pour le param?tre graphique
2007 Apr 20
2
sorting data in R
hello, I'd like know how to sort a data frame in R for example how I should do to sort by Catholic with swiss data frame like below thanks Fertility Agriculture Examination Education Catholic Infant.Mortality Courtelary 80.2 17.0 15 12 9.96 22.2 Delemont 83.1 45.1 6 9 84.84 22.2
2004 Jan 13
1
SMB Signature verification failed on incoming packet
My setup is Samba/smbclient version 3.0.1 on linux RedHat 9. \\snapper\dfs is a dfs share on snapper, a Win2k3 Active Directory server. My smb.conf contains: [global] realm = ciswinnet.cis.uab.edu workgroup=CISWINNET security = ADS encrypt passwords = yes password server = snapper.cis.uab.edu client use spnego = yes I am trying to run the following command: smbclient \\\\snapper\\dfs