Create an Emu trackdata object
Create an Emu trackdata object from a raw data matrix.
as.trackdata(data, index, ftime, trackname = "")
data |
A two dimensional matrix of numerical data. |
index |
Segment index, one row per segment, two columns give the start
and end rows in the |
ftime |
A two column matrix with one row per segment, gives the start and end times in milliseconds for each segment. |
trackname |
The name of the track. |
Emu trackdata objects contain possibly multi-column numerical data
corresponding to a set of segments from a database. Data for each segment
takes up a number of rows in the main data matrix, the start and end
rows are stored in the index component. The ftime component
contains the start and end times of the segment data.
Trackdata objects are returned by the get_trackdata function.
The components are bound into a trackdata object.
# make a trackdata object of two data segments data1 <- matrix( 1:10, ncol=2 ) data2 <- matrix( 11:20, ncol=2 ) nd1 <- nrow(data1) nd2 <- nrow(data2) index <- rbind( c( 1, nd1 ), c(nd1+1,nd1+nd2) ) times <- rbind( c( 100.0, 110.0 ), c( 200.0, 210.0 ) ) tdata <- as.trackdata( rbind( data1, data2 ), index, times, trackname="fake") # describe the data summary(tdata) # get the data for the first segment tdata[1] # and the second tdata[2]
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.