[R] Coercing Output from mget() into Proper Data Frame
ntyson at clovermail.net
ntyson at clovermail.net
Thu Jun 9 22:29:00 CEST 2011
Nevermind, I found the problem. I was using a variant of the function
that was wrong.
Quoting "Sarah Goslee" <sarah.goslee at gmail.com>:
> That's not enough information for us to be able to help you, since
> there's no reproducible code.
>
> Here's the crucial bit:
>> stem_freqs_list <- mget(uniq_stems,stem_dict)
>> stem_freqs <- do.call(rbind,stem_freqs_list)
>
> What does stem_freqs_list look like?
> What does stem_freqs look like?
>
> dim() and str() would both be helpful here.
>
> Sarah
>
>
> On Thu, Jun 9, 2011 at 3:48 PM, <ntyson at clovermail.net> wrote:
>> Hello R-philes:
>>
>> I have the following function that gets the output of mget() and converts it
>> to a data frame to return. What I am finding is that the dimensions are
>> wrong. Basically, I get:
>>
>> bridesmaid wed u see m gt lt like love X.0 dress pagetrack one go X3 get
>> 1 56 35 27 30 24 20 20 23 28 17 25 16 16 28 15 26
>>
>> Instead, I want something like:
>>
>> [1] bridesmaid 56
>>
>> In other words, I want the word in the first column and the frequency in the
>> second column.
>>
>> Any help would be very much appreciated.
>>
>> Regards,
>>
>> Na'im
>>
>> library(Rstem)
>>
>> # make a data frame of stems and their frequencies
>> stem_freq_list <- function(freqFile) {
>> stem_dict <- new.env(parent=emptyenv(), hash=TRUE)
>> freq_dist <- read.csv(freqFile,header=TRUE)
>> words <- as.character(freq_dist[,1])
>> freqs <- as.numeric(freq_dist[,2])
>> stems <- wordStem(words, language="english")
>> uniq_stems <- c()
>>
>> # make a hash table of stems and their frequencies
>> for (i in 1:length(words)) {
>> word <- words[i]; stem <- stems[i]; freq <- freqs[i]
>> if (exists(stem, envir=stem_dict)) {
>> cnt <- get(stem, envir=stem_dict)
>> cnt <- cnt + freqs[i]
>> assign(stem,cnt,envir=stem_dict)
>> } else {
>> assign(stem, freq, envir=stem_dict)
>> uniq_stems <- append(uniq_stems, stem)
>> }
>> }
>>
>> # return data frame of stems and their frequencies
>> stem_freqs_list <- mget(uniq_stems,stem_dict)
>> stem_freqs <- do.call(rbind,stem_freqs_list)
>> return(stem_freqs_list)
>> }
>>
>
>
> --
> Sarah Goslee
> http://www.functionaldiversity.org
>
>
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