[R] renaming intercept column when retrieving coeficients from lme using coef function
I am still fairly new to R and have a fairly rudimentary question. I am trying to name a vector of coefficients retrieved from a multilevel model using the coef function. I guess the default name is Intercept and I cannot figure out how to rename it. I have tried the using the code below to name the column of coefficients ind.y derived from an lme model. Unfortunately, the name ind.y is not applied to the column. What can I do to name the column? toy-data.frame(ID=c(1,1,1,2,2,2,3,3,3,4,4,4), x=rnorm(12), y=rnorm(12)) model.toy-lme(y~1, random=~1|ID, data=toy) coef.y-(ind.y=coef(model.toy)) coef.y (Intercept) 1 0.52065015 2 0.04066776 3 0.29793571 4 0.11213693 Thanks, Eric McKibben Doctoral Candidate I-O Psychology Clemson University [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] Using while statements to insert rows in a dataframe
Hi. I am very new to R and have been diligently working my way through the manual and various tutorials. I am now trying to work with some of my own data and have encountered a problem that I need to fix. I have a dataframe with 8 columns and approximately 850 rows. I have provided an excerpt of the dataframe below. Within column 6 (Question) the numbers 1:33 repeat down the entire column. Occasionally, however, another value (-32767) appears. I need to locate this value everytime it appears and in its place insert 33 rows that are numbered 1:33 in column Question. Additionally, I need to maintain the integrity of the other columns so that the values at that location in each column are also repeated 33 times. So, in the example below, I currently have 68 rows of data, but I actually need 132 rows (two -32767 values need to be replaced). Based on my reading I am guessing that I need to use a while loop, but I cannot seem to get it right. Is this the appropriate function! or is there another more efficient method for achieving my goal. Again, I am quite new to R. Thanks for your help! Year Month Day Time PartID Question Latency Response 2008 2 7 194556 6 1 265 -1 2008 2 7 194556 6 2 466 84 2008 2 7 194556 6 3 199 68 2008 2 7 194556 6 4 152 83 2008 2 7 194556 6 5 177 100 2008 2 7 194556 6 6 177 61 2008 2 7 194556 6 7 400 43 2008 2 7 194556 6 8 225 88 2008 2 7 194556 6 9 249 32 2008 2 7 194556 6 10 172 8 2008 2 7 194556 6 11 163 17 2008 2 7 194556 6 12 326 70 2008 2 7 194556 6 13 232 26 2008 2 7 194556 6 14 157 22 2008 2 7 194556 6 15 135 -1 2008 2 7 194556 6 16 133 2 2008 2 7 194556 6 17 222 2 2008 2 7 194556 6 18 357 4 2008 2 7 194556 6 19 131 -1 2008 2 7 194556 6 20 222 90 2008 2 7 194556 6 21 230 35 2008 2 7 194556 6 22 374 32 2008 2 7 194556 6 23 275 85 2008 2 7 194556 6 24 141 -1 2008 2 7 194556 6 25 264 19 2008 2 7 194556 6 26 380 17 2008 2 7 194556 6 27 240 21 2008 2 7 194556 6 28 127 -1 2008 2 7 194556 6 29 232 92 2008 2 7 194556 6 30 205 95 2008 2 7 194556 6 31 185 96 2008 2 7 194556 6 32 319 61 2008 2 7 194556 6 33 101 -1 2008 2 8 122203 6 -32767 0 NA 2008 2 7 194556 6 1 265 -1 2008 2 7 194556 6 2 466 84 2008 2 7 194556 6 3 199 68 2008 2 7 194556 6 4 152 83 2008 2 7 194556 6 5 177 100 2008 2 7 194556 6 6 177 61 2008 2 7 194556 6 7 400 43 2008 2 7 194556 6 8 225 88 2008 2 7 194556 6 9 249 32 2008 2 7 194556 6 10 172 8 2008 2 7 194556 6 11 163 17 2008 2 7 194556 6 12 326 70 2008 2 7 194556 6 13 232 26 2008 2 7 194556 6 14 157 22 2008 2 7 194556 6 15 135 -1 2008 2 7 194556 6 16 133 2 2008 2 7 194556 6 17 222 2 2008 2 7 194556 6 18 357 4 2008 2 7 194556 6 19 131 -1 2008 2 7 194556 6 20 222 90 2008 2 7 194556 6 21 230 35 2008 2 7 194556 6 22 374 32 2008 2 7 194556 6 23 275 85 2008 2 7 194556 6 24 141 -1 2008 2 7 194556 6 25 264 19 2008 2 7 194556 6 26 380 17 2008 2 7 194556 6 27 240 21 2008 2 7 194556 6 28 127 -1 2008 2 7 194556 6 29 232 92 2008 2 7 194556 6 30 205 95 2008 2 7 194556 6 31 185 96 2008 2 7 194556 6 32 319 61 2008 2 7 194556 6 33 101 -1 2008 2 8 143056 6 -32767 0 NA Eric S McKibben Industrial-Organizational Psychology Graduate Student Clemson University Clemson, SC [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] error in importing text files
Hello All: I am very new to R and am trying to import some (107) text files into R while simultaneously manipulating the data into a structure that I can use. Below is a description of what I am trying to ultimately accomplish. However, I find that I am unable to even read one file into R using the read.table function. I get the following error: test-read.table(test4.txt) Error in scan(file, what, nmax, sep, dec, quote, skip, nlines, na.strings, : line 16 did not have 8 elements So, I would like to resolve the error first, and then ultimately accomplish the goal outlined below. I understand that my ultimate goal may require multiple steps. I am open to that. First, a little background: Data were collected from 107 participants on palm pilots. Participants were randomly beeped 5 times throughout the day for 5 days resulting in a total of 25 measurement occasions. Participants responded to beeps only when they were able to (not in class, driving, etc). Thus, most participants completed far less than 25 measurement occasions. During each measurement occasion participants responded to 32 questions by moving a slider on a 100 point scale. The palms recorded the date, time, palm pilot ID number, response to the beep (non-response = -32767), question number, response latency in milliseconds, response to each question, and three addtiional data points of no interest. The data are arranged in an unstacked (long) text file such that each line contains all of the above information and there are 34 (32 responses plus 2 extra lines of meaningless data) lines per measurement occasion (upto 850 lines of data if all 34 lines are present ! for all 25 measurment occasions). Below is an example of how the data are arranged. 20080204131646 23256063 6 0 20080204131646 233152-1 7 0 20080204150043 2-32767 0 0 65535 20080204182117 2 1283-1 7 0 20080204182117 2 283834 6 0 20080204182117 2 326636 6 0 Year/Month/Day/Time Palm ID Response/Q#Latency Response 3 meangingless columnsThe dataset presented above begins with question 32 of one measurement occasion on Febraury 4, 2008 taken at 13:16:46. The next line (33) is in the datafile because participants had to click a button to exit the measurement occasion. You then see the beginning of another measurement occasion (20080204192117) in which the participant did not respond (-32767). The next measurement occasion begins on the next line which actually starts with response 2 because participants were required to read a screen and click through prior to answering any questions. Thus, anytime participants simply read an instruction page responses are coded as a -1. What I would like to do is write code to automatically import these 107 files into R and structure them appropriately while importing them. Furthermore, I would like for the code to use conditional statements so that whenever it encounters a -32767! it inserts 32 variables (columns) with missing data and whenever it encounters a -1 it deletes that column all together. I would also like the code to separate the combined year/month/day/time column into 4 separate columns (year, month, day, time). Finally, I would like the code to stack the 32 responses during each measurement occasion so that I have 32 columns of reponses plus columns for year, month, day, and latency, but leave each measurment occasion unstacked. Thanks! Eric S McKibben Industrial-Organizational Psychology Graduate Student Clemson University Clemson, SC [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] error in importing text files
Hi Steve, Thanks for the reply. My initial thought was just as you indicated, one of the rows must be missing an element. Interestingly, all of the rows in that text file had 8 columns. I went directly to the line in the text file indicated in the error and there was nothing unusual about that line as far as I could tell. On a related note, is it possible to import one set of characters at a time to create a series of vectors that I could then bind together into a data frame? For example, lets say I want the first 4 characters in a column that contains the following data 20080204131646. Could I assign these characters to a vector called year? Could I then assign characters five and six to another vector called day? If so, how do I do this? Thanks again, Eric S McKibben Industrial-Organizational Psychology Graduate Student Clemson University Clemson, SC - Original Message - From: steve_fried...@nps.gov To: Eric McKibben emck...@clemson.edu Cc: r-help@r-project.org; r-help-boun...@r-project.org Sent: Monday, May 18, 2009 11:01 AM Subject: Re: [R] error in importing text files Eric, The error suggests that the file has an inconsistent number of attributes. You should inspect the file to make sure that each line has the same number of expected attributes (columns). If one or more is missing, it suggests that the data collection process from the Palm Pilot is not what you expect it to be. Perhaps, participants, just didn't answer all of the questions or something like that. Steve Friedman Ph. D. Spatial Statistical Analyst Everglades and Dry Tortugas National Park 950 N Krome Ave (3rd Floor) Homestead, Florida 33034 steve_fried...@nps.gov Office (305) 224 - 4282 Fax (305) 224 - 4147 Eric McKibben emck...@clemson. edu To Sent by: r-help@r-project.org r-help-boun...@r- cc project.org Subject [R] error in importing text files 05/18/2009 10:42 AM AST Hello All: I am very new to R and am trying to import some (107) text files into R while simultaneously manipulating the data into a structure that I can use. Below is a description of what I am trying to ultimately accomplish. However, I find that I am unable to even read one file into R using the read.table function. I get the following error: test-read.table(test4.txt) Error in scan(file, what, nmax, sep, dec, quote, skip, nlines, na.strings, : line 16 did not have 8 elements So, I would like to resolve the error first, and then ultimately accomplish the goal outlined below. I understand that my ultimate goal may require multiple steps. I am open to that. First, a little background: Data were collected from 107 participants on palm pilots. Participants were randomly beeped 5 times throughout the day for 5 days resulting in a total of 25 measurement occasions. Participants responded to beeps only when they were able to (not in class, driving, etc). Thus, most participants completed far less than 25 measurement occasions. During each measurement occasion participants responded to 32 questions by moving a slider on a 100 point scale. The palms recorded the date, time, palm pilot ID number, response to the beep (non-response = -32767), question number, response latency in milliseconds, response to each question, and three addtiional data points of no interest. The data are arranged in an unstacked (long) text file such that each line contains all of the above information and there are 34 (32 responses plus 2 extra lines of meaningless data) lines per measurement occasion (upto 850 lines of data if all 34 lines are present ! for all 25 measurment occasions). Below is an example of how the data are arranged. 20080204131646 23256063 6 0 20080204131646 233152-1 7 0 20080204150043 2-32767 0 0 65535 20080204182117 2 1283-1 7 0 20080204182117 2 283834 6 0 20080204182117 2 326636 6 0 Year/Month/Day/Time Palm ID Response/Q#Latency Response 3 meangingless columnsThe dataset presented above begins with question 32 of one measurement occasion on Febraury 4, 2008 taken at 13:16:46. The next line (33) is in the datafile because participants had to click a button to exit the measurement occasion. You then see the beginning of another measurement occasion (20080204192117) in which the participant did not respond (-32767). The next measurement occasion begins on the next line which actually starts with response 2
