Created
August 29, 2011 09:50
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Neo4j-Cypher-R
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# Requirements | |
#sudo apt-get install libcurl4-gnutls-dev # for RCurl on linux | |
#install.packages('RCurl') | |
#install.packages('RJSONIO') | |
library('RCurl') | |
library('RJSONIO') | |
query <- function(querystring) { | |
h = basicTextGatherer() | |
curlPerform(url="http://localhost:7474/db/data/ext/CypherPlugin/graphdb/execute_query", | |
postfields=paste('query',curlEscape(querystring), sep='='), | |
writefunction = h$update, | |
verbose = FALSE | |
) | |
result <- fromJSON(h$value()) | |
data <- data.frame(t(sapply(result$data, unlist))) | |
names(data) <- result.json$columns | |
data | |
} | |
# EXAMPLE | |
# ======= | |
# Cypher query | |
q <- " | |
START root = (0) | |
MATCH (root)-[:CommentType]->(comments)<-[:HasType]-(comment)-[:PartOf]->(submission)-[:PartOf]->(subreddit) | |
RETURN comment.ups, comment.downs, submission.ups, submission.downs, subreddit.label, submission.created, comment.created | |
" | |
data <- query(q) | |
head(data) | |
top_subreddits <- data.frame(table(data$subreddit.label)) | |
top_subreddits[order(top_subreddits$Freq, decreasing=T),] | |
# OUTPUT: | |
submission.ups submission.created comment.downs subreddit.label comment.ups submission.downs | |
1 33 1307643497 0 TheoryOfReddit 5 9 | |
2 6375 1307723661 0 worldnews 6 4599 | |
3 7 1307832288 1 IAmA 3 4 | |
4 7 1307749193 0 semanticweb 1 3 | |
5 84 1307979471 0 worldnews 1 29 | |
6 19 1308051068 0 belgium 5 4 | |
comment.created | |
1 1307691304 | |
2 1307744384 | |
3 1307908788 | |
4 1307910667 | |
5 1308049417 | |
6 1308058498 | |
Var1 Freq | |
25 TrueReddit 9 | |
4 AskSocialScience 7 | |
11 IAmA 7 | |
5 belgium 6 | |
9 Foodforthought 6 | |
15 politics 6 | |
26 videos 5 | |
2 AskReddit 4 | |
17 Python 4 | |
20 semanticweb 4 | |
16 programming 3 | |
22 statistics 3 | |
27 worldnews 3 | |
14 pics 2 | |
18 reddit.com 2 | |
19 Scholar 2 | |
23 Terraria 2 | |
24 TheoryOfReddit 2 | |
1 academicpublishing 1 | |
3 askscience 1 | |
6 bestof 1 | |
7 buildapc 1 | |
8 Drugs 1 | |
10 greed 1 | |
12 MensRights 1 | |
13 PhilosophyofScience 1 | |
21 sociology 1 | |
28 WTF 1 |
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I think I fixed it! Have a look at my fork.