Converts wide format growth data from radial to incremental or incremental to radial measurements.
A data.frame that contains the growth measurement data in wide or one-fish-per-line format.
A string that indicates the prefix for all variable names in the input data frame that contain the measurements from the calcified structures. See details.
A vector of column numbers or variable names in the input data frame that contain the measurements from the calcified structures. See details.
A string that identifies the output format data type (i.e., the format to convert to). If
A string that indicates the prefix to use for the newly computed measurements in the output data frame. Defaults to the same string as
The data must be in WIDE format where each row contains all information (including all measurements from the calcified structure) for an individual fish. It is assumed that the input data.frame is of the opposite data type given in
out.type (i.e., that a conversion is needed). It does not check to see if this is true.
The columns that contain the original measurement data can specified in a variety of ways. First, if all columns begin with the same prefix (and no other columns contain that prefix), then the prefix string may be given to
in.pre=. Second, a sequence of column numbers may be given to
in.var= with the
#:# (if the columns are contiguous) or as a vector (if the columns are not contiguous). Third, a vector of column names may be given to
in.var=. Note that one, but not both, of
in.pre= must be specified by the user.
The newly computed data will be labeled with a prefix the same as
out.pre= is set by the user. For example, if the data are converted to radial measurements, then the output variables will be “rad1”, “rad2”, etc. unless
out.pre= was changed from the default. This function assumes that the measurements start with age-1.
A data.frame with all columns, except for those defined by
in.var, from the
df retained as the left-most columns and the original data in the
in.var columns converted to the
out.type type as the remaining columns.
Derek H. Ogle, firstname.lastname@example.org
addRadCap for related functionality.
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## Get data with radial measurements data(SMBassWB) headtail(SMBassWB) ## Use in.pre= to convert to increments SMBi1 <- gConvert(SMBassWB,in.pre="anu",out.type="inc") headtail(SMBi1) ## Use in.var= with column names to convert to increments SMBi2 <- gConvert(SMBassWB,in.var=c("anu1","anu2","anu3","anu4","anu5","anu6", "anu7","anu8","anu9","anu10","anu11","anu12"), out.type="inc") headtail(SMBi2) ## Use in.var with column numbers to convert to increments SMBi3 <- gConvert(SMBassWB,in.var=8:19,out.type="inc") headtail(SMBi3) ## Convert back to radial measurements SMBr1 <- gConvert(SMBi1,in.pre="inc",out.type="rad") headtail(SMBr1)