change

var Command = &command.Command{
	Usage: `change [--from <age>] [--to <age>] [--at <age>]
	--old <value> --new <value> <time-pix-file>`,
	Short: "change pixel values of a time pixelation",
	Long: `
Command change reads a time pixelation model and changes its pixel values.

The flag --old is required and is used to set the pixel value to be changed.
The flag --new is required and is used to set the new value of the pixels.

By default, all time stages of the time pixelation will be changed. With the
flags --from and --to, it will change only the stages inside the indicated
ages (in million years). Another possibility is using the flag --at to change
a particular time stage.

The argument of the command is the file that contains the time pixelation.
This argument is required.
	`,
	SetFlags: setFlags,
	Run:      run,
}