cm_df2long function

Transform Codes to Start-End Durations

Transforms the range coding structure(s) from cm_df.temp

(in list format) into a data frame of start and end durations in long format.

cm_df2long(
  df.temp.obj,
  v.name = "variable",
  list.var = TRUE,
  code.vars = NULL,
  no.code = NA,
  add.start.end = TRUE,
  repeat.vars = NULL,
  rev.code = FALSE
)

Arguments

• df.temp.obj: A character vector of names of object(s) created by cm_df.temp, a list of cm_df.temp created objects or a data frame created by cm_df.temp.
• v.name: An optional name for the column created for the list.var argument.
• list.var: logical. If TRUE creates a column for the data frame created by each time.list.
• code.vars: A character vector of code variables. If NULL uses all variables from the first column after the column named word.num.
• no.code: The value to assign to no code; default is NA.
• add.start.end: logical. If TRUE adds a column for start and end times.
• repeat.vars: A character vector of repeated/stacked variables. If NULL uses all non code.vars variables.
• rev.code: logical. If TRUE reverses the order of code.vars and no.code variables.

Returns

Generates a data frame of start and end times for each code.

Examples

## Not run:

codes <- qcv(dc, sf, wes, pol, rejk, lk, azx, mmm)
x1 <- cm_df.temp(DATA, "state", codes)
head(x1)

#empty code matrix
out1 <- cm_df2long(x1,  code.vars = codes)
head(out1, 15)

#fill it randomly
x1[, 7:14] <- lapply(7:14,  function(i) sample(0:1, nrow(x1), TRUE))
out2 <- cm_df2long(x1,  code.vars = codes)
head(out2, 15)
plot(out2)
## End(Not run)

References

Miles, M. B. & Huberman, A. M. (1994). An expanded sourcebook: Qualitative data analysis. 2nd ed. Thousand Oaks, CA: SAGE Publications.

See Also

cm_time2long, cm_range2long, cm_df.temp