Refactored BLT Components (RBC), includes data vectors and graph widgets for developing line and bar graph applications in Tcl/Tk.
The rbc repository is hosted at: http://chiselapp.com/user/rene/repository/rbc/
To load rbc call:
package require rbc
License & support
This work is under BSD license.
Original sources are from https://sourceforge.net/projects/rbctoolkit/ and https://sourceforge.net/projects/blt/