Used in tick bars, or at least not in time, to evaluate the duration of the bar in seconds.
Returns the number of seconds elapsed to complete each individual bar.

Could be useful to measure the market speed in non-time-dependent charts: ticks charts, range bars, renko bars, etc.

Code emerged from discussion here: Indicator for bar duration

// utilizzato nelle barre a tick, o comunque non a tempo, per valutare la durata della barra in secondi
// ritorna il numero di secondi trascorsi per il completamento di ogni singola barra

ptime = Time[1]
ctime = Time

// estraggo la differenza in ore
if ctime>=10000 then
 hend = (ctime - (ctime mod 10000))/10000
 ctime = (ctime mod 10000)
else
 hend = 0
endif
if ptime>=10000 then
 hstart = (ptime - (ptime mod 10000))/10000
 ptime = (ptime mod 10000)
else
 hstart = 0
endif

// estraggo la differenza in minuti
if ctime>=100 then
 mend = (ctime - (ctime mod 100))/100
 ctime = (ctime mod 100)
else
 mend = 0
endif
if ptime>=100 then
 mstart = (ptime - (ptime mod 100))/100
 ptime = (ptime mod 100)
else
 mstart = 0
endif

secstarttime = hstart*3600+mstart*60+ptime
secendtime = hend*3600+mend*60+ctime

barsec = secendtime-secstarttime
// correggo l'eventuale cambio di giorno
if barsec<0 then
 barsec = 3600*24-secstarttime+secendtime
endif

return barsec as "seconds/bar"