mergecsPi: Adds parent variables to the child records of a csPi object.
In ldbk/fishPifct: fishPi functions

Description Usage Arguments Details Value Warning Author(s) Examples

This function is designed as a prerequisite for plotting variables within the tr, sl, hl and ca data frames of a csData object where the spatio-temporal and technical information within the hh data frame is required.

1	mergecsPi(csobj)

csobj

an object of class csData

csPi objects consist of 6 nested data frames: se, tr, hh, sl, hl and ca. Information of ICES statistical rectangle, ICES (or FAO) areas, and gear type are recorded as variables only within the hh data frame. This function adds the variables

\$rect, \$area, \$date, \$foCatNat, \$foCatEu5, \$foCatEu6, \$quarter, \$month,

to the tr, hl, sl and ca data frames and defines

\$quarter, \$month,

for the hh data frame.

csobj

An amended csData object with the additional variables as outlined above

The returned csobj is no longer in csData format.

Alastair Pout a.pout@marlab.ac.uk

#data(cod2004cs)
# A csData@hl table contains data on length frequencies but no 
# information on where these data were obtained, when (other than the year) 
# and with what gear type
#dim(cod2004cs@hl)
#head(cod2004cs@hl)
#newcod2004cs <-mergecsData(cod2004cs)
# The merged csData@hl table contains the additional 
# information on where these data were obtained, when and with what gear type
#dim(newcod2004cs@hl)
#head(newcod2004cs@hl)