Re: [R] Subscript Error

Thanks to you both. Calling recover (an option hitherto unknown to me) helped me identify the problem. For the record, the error occurred in the geom_path() line, not the list concatenation, as I had previously thought. It was a logic problem: when typeof == NULL the function jumped, but i

[R] Subscript Error

json_dir is a list of JSON lists mapping lat/long route points between locations using CloudMade's API. post_url is the URL of the HTTP request for (n in json_dir) { i = i + 1 if (typeof(json_dir[[i]]) != NULL) { if (i == 1) { dat_add

Re: [R] convert a list to a data frame

Have you looked at plyr? Generally, ldply works well for this sort of thing. -- View this message in context: http://r.789695.n4.nabble.com/convert-a-list-to-a-data-frame-tp4532206p4533257.html Sent from the R help mailing list archive at Nabble.com.

[R] Why does this work? plyr within-subset normalization

Working code that normalize each row's value against the subset's maximum. Does the invocation of max() somehow instruct R to 'step back' and evaluate the subset? Thanks, Zack -- View this message in context:

Re: [R] scanning data into r

Just read into a data.frame with read.table and then subset to use the first column. e.g., your_desired_data - data.frame(read.table(path_to_file, sep = , fill = T)) your_desired_data - your_desired_data[,1] -- View this message in context:

[R] Unique instances of a string in a vector -- there must be a better way to do this

I'm sure there's a better way to do this using plyr. I just can't nail the right series of commands. I've got a vector of strings. I want to remove all where the string's count within the vector is 1. Right now I'm using: Where x2 is the original data.frame and my character strings live

Re: [R] passing xlim to coord_map in ggplot2

The first block of code should be reproducible. For the second block, you need only a data.frame. I've included a few rows from the one I'm working with. Two required libraries: maps, ggplot2. http://r.789695.n4.nabble.com/file/n4492267/upton_tank_trunc_nabble.csv upton_tank_trunc_nabble.csv

[R] passing xlim to coord_map in ggplot2

I'm sure this is smack-head moment, but I haven't been able to find an example of this on Nabble or SO, so thought I'd ask. This works: michigan - map_data('county', 'michigan') mich_points - data.frame(x = rnorm(n = 200, median(michigan[,1]), 0.75), y = rnorm(n = 200, median(michigan[,2]),

[R] twitteR package -- geocode

Question: twitteR's searchTwitter() function contains a 'geocode' argument that returns tweets from users whose location falls within a given radius. I'm not completely familiar with the API from which twitteR pulls, but no mechanism exists to extract location coordinates from the tweets

[R] Installing RMySQL -- 64-bit Windows 7

Trying to install RMySQL on 64-bit Windows 7. Using R-2.14.2 with Rtools214 and MySQL Server 5.5. Read through several step-by-steps of RMySQL source installation. Troubleshooting: - Copied libmysql.dll to R-2.14.2/bin AND R-2.14.2/bin/i386. - Copied libmysql.dll and libmysql.lib to MySQL

[R] I'm sure I'm missing something with formatC() or sprintf()

I have a four-digit string I want to convert to five digits. Take the following frame: zip 2108 60321 60321 22030 91910 I need row 1 to read '02108'. This forum directed me to formatC previously (thanks!) That usually works but, for some reason, it's not in this instance. Neither of the syntaxes

[R] Assigning a function to the 'times' argument of rep()

Question: I'm trying to use paste() with rep() to reformat a series of values as zip codes. e.g., if column 1 looks like: 52775 83111 99240 4289 112 57701 20001 I want rows 4 and 5 to read, 04289 00112 My thought was this: perry_frame$zip - ifelse(nchar(as.character(perry_frame$zip))5,

[R] Combining two or more KML files in R

Wanted to post an exchange with Roger Bivand on combining KML files. I had hoped to combine multiple KML files into a single SpatialPolygonsDataFrame. I used readOGR to bring files into R; had I worked with .shp files, I might've used readShapePoly and a unique IDvar. SPRbind construction would

Re: [R] Prediction from censReg?

Just posting again here... -- View this message in context: http://r.789695.n4.nabble.com/Prediction-from-censReg-tp4155855p4158844.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list

[R] Prediction from censReg?

Hi - First post, so excuse any errors in protocol: Wanted to ask if there's an easy way to use 'predict' with objects of class 'censReg', 'maxLik', 'maxim' or 'list'. Have a left-censored dataset, attempting to use a Tobit model and am working with the censReg package. I like how easy it is