Created
June 21, 2012 00:44
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Extended historical queries with the cosm R package
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| require('cosm') | |
| if (!exists('key')) key <- readline('API key: ') | |
| feed <- getFeed(58537, key) | |
| print(feed$description) | |
| t0 <- Sys.time() | |
| duration <- 60 * 60 * 24 * 7 # one week | |
| z <- getDatapoints(feed, key, datastreams='2h', end=t0, start=t0-duration) | |
| while (TRUE) { | |
| t0 <- t0 - duration | |
| message("Requesting: end = ", t0) | |
| result <- getDatapoints(feed, key, datastreams='2h', end=t0, start=t0-duration) | |
| if (is.null(result)) break | |
| z <- c(z, result) | |
| } | |
| plot(z, main=feed$title) |
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