| ww_floorIVUSGS | R Documentation | 
This function generates instantaneous NWIS data from https://waterservices.usgs.gov/ and then floors to a user defined interval with wwOptions ('1 hour' is default) by taking the mean.
ww_floorIVUSGS(
  procDV,
  sites = NULL,
  parameter_cd = NULL,
  options = wwOptions(),
  parallel = FALSE,
  verbose = TRUE,
  ...
)
| procDV | A previously created ww_dvUSGS object. | 
| sites | A  | 
| parameter_cd | A USGS code parameter code, only if using  | 
| options | A wwOptions call. | 
| parallel | 
 | 
| verbose | 
 | 
| ... | arguments to pass on to future_map. | 
A tibble with a user defined interval time step.
For performance reasons, with multi-site retrievals you may
retrieve data since October 1, 2007 only. If a previously created ww_dvUSGS object is not used then the user needs to
provide a sites vector. This will run ww_dvUSGS in the background.
## Not run: 
library(whitewater)
yaak_river_dv <- ww_dvUSGS('12304500',
parameter_cd = '00060',
wy_month = 10)
yaak_river_iv <- ww_floorIVUSGS(yaak_river_dv)
#change floor method
yaak_river_iv <- ww_floorIVUSGS(yaak_river_dv,
                                options = wwOptions(floor_iv = '6-hour'))
#change number of days
yaak_river_iv <- ww_floorIVUSGS(yaak_river_dv,
                                options = wwOptions(floor_iv = '2-hour',
                                                    period = 365))
# get by date range
yaak_river_wy <- ww_floorIVUSGS(yaak_river_dv,
                                options = wwOptions(date_range = 'date_range',
                                                    dates = c('2022-03-01', '2022-05-11')))
#parallel
#get sites
huc17_sites <- dataRetrieval::whatNWISdata(huc = 17,
siteStatus = 'active',
service = 'dv',
parameterCd = '00060')
library(future)
#need to call future::plan()
plan(multisession(workers = availableCores()-1))
pnw_dv <- ww_dvUSGS(huc17_sites$site_no,
parameter_cd = '00060',
wy_month = 10,
parallel = TRUE)
pnw_iv <- ww_floorIVUSGS(pnw_dv,
                    parallel = TRUE)
## End(Not run)
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