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