Doc: Model result properties and image properties

[rburghol]

ds <- RomDataSource$new(site, rest_uname)
ds$get_token(rest_pw)

# post a file
vahydro_post_metric_to_scenprop(scenprop$pid, 'external_file', remote_url, 'logfile', NA, ds)

#scenprop$pid, , NULL, , wd_mgd
if (is.null(met.propcode)) {
  met.propcode <- ''
}
metprop <- RomProperty$new(
  ds, 
  metinfo <- list(
    varkey = 'om_class_Constant',
    propname = 'wd_mgd',
    featureid = as.integer(scenprop$pid),
    entity_type = "dh_properties",
    bundle = "dh_properties"
  ), 
  TRUE
)
metprop$propcode <- as.character(met.propcode)
metprop$propvalue <- as.numeric(met.value)
metprop$save(TRUE)

img_prop <- RomProperty$new(
  ds, list(
    varkey = 'dh_image_file',
    propname="mllr_plot", 
    featureid=ts$tid, 
    entity_type="dh_timeseries",
    bundle='dh_properties'
  ),TRUE
)
# now add the image
img_prop$propcode <- furl
img_prop$save(TRUE)