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authorGertjan van den Burg <gertjanvandenburg@gmail.com>2020-03-10 12:27:53 +0000
committerGertjan van den Burg <gertjanvandenburg@gmail.com>2020-03-10 12:27:53 +0000
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+# Loading a TCPD dataset into R
+
+The file ``load_dataset.R`` contains the function ``load.dataset`` that reads
+the JSON file into an R dataframe. The
+[RJSONIO](https://cran.r-project.org/web/packages/RJSONIO/index.html) package
+is required:
+
+```R
+> install.packages('RJSONIO')
+```
+
+Simply run:
+
+```R
+> source('./load_dataset.R')
+> df <- load.dataset('../../datasets/ozone/ozone.json')
+> df
+ t Total Emissions
+1 0 380000
+2 1 400000
+3 2 440000
+4 3 480000
+5 4 510000
+6 5 540000
+7 6 580000
+8 7 630000
+```
+
+Notice that the time axis in TCPD is always 0-based. This needs to be taken
+into account when comparing detection results to the human annotations. (This
+is an unfortunate consequence of the differences between indexing in R and
+Python.)
+
+Missing observations in time series are represented with a ``NA`` value.