|
|
|
|
## ----setup, results='hide'----------------------------------------------------
|
|
|
|
|
# this vignette requires:
|
|
|
|
|
library(opensensmapr)
|
|
|
|
|
library(jsonlite)
|
|
|
|
|
library(readr)
|
|
|
|
|
|
|
|
|
|
## ----cache--------------------------------------------------------------------
|
|
|
|
|
b = osem_boxes(grouptag = 'ifgi', cache = tempdir())
|
|
|
|
|
|
|
|
|
|
# the next identical request will hit the cache only!
|
|
|
|
|
b = osem_boxes(grouptag = 'ifgi', cache = tempdir())
|
|
|
|
|
|
|
|
|
|
# requests without the cache parameter will still be performed normally
|
|
|
|
|
b = osem_boxes(grouptag = 'ifgi')
|
|
|
|
|
|
|
|
|
|
## ----cachelisting-------------------------------------------------------------
|
|
|
|
|
list.files(tempdir(), pattern = 'osemcache\\..*\\.rds')
|
|
|
|
|
|
|
|
|
|
## ----cache_custom-------------------------------------------------------------
|
|
|
|
|
cacheDir = getwd() # current working directory
|
|
|
|
|
b = osem_boxes(grouptag = 'ifgi', cache = cacheDir)
|
|
|
|
|
|
|
|
|
|
# the next identical request will hit the cache only!
|
|
|
|
|
b = osem_boxes(grouptag = 'ifgi', cache = cacheDir)
|
|
|
|
|
|
|
|
|
|
## ----clearcache, results='hide'-----------------------------------------------
|
|
|
|
|
osem_clear_cache() # clears default cache
|
|
|
|
|
osem_clear_cache(getwd()) # clears a custom cache
|
|
|
|
|
|
|
|
|
|
## ----data, results='hide', eval=FALSE-----------------------------------------
|
|
|
|
|
# # first get our example data:
|
|
|
|
|
# measurements = osem_measurements('Windgeschwindigkeit')
|
|
|
|
|
|
|
|
|
|
## ----serialize_json, eval=FALSE-----------------------------------------------
|
|
|
|
|
# # serializing senseBoxes to JSON, and loading from file again:
|
|
|
|
|
# write(jsonlite::serializeJSON(measurements), 'measurements.json')
|
|
|
|
|
# measurements_from_file = jsonlite::unserializeJSON(readr::read_file('measurements.json'))
|
|
|
|
|
# class(measurements_from_file)
|
|
|
|
|
|
|
|
|
|
## ----serialize_attrs, eval=FALSE----------------------------------------------
|
|
|
|
|
# # note the toJSON call instead of serializeJSON
|
|
|
|
|
# write(jsonlite::toJSON(measurements), 'measurements_bad.json')
|
|
|
|
|
# measurements_without_attrs = jsonlite::fromJSON('measurements_bad.json')
|
|
|
|
|
# class(measurements_without_attrs)
|
|
|
|
|
#
|
|
|
|
|
# measurements_with_attrs = osem_as_measurements(measurements_without_attrs)
|
|
|
|
|
# class(measurements_with_attrs)
|
|
|
|
|
|
|
|
|
|
## ----cleanup, include=FALSE, eval=FALSE---------------------------------------
|
|
|
|
|
# file.remove('measurements.json', 'measurements_bad.json')
|
|
|
|
|
|
