Clock

Clock[]
represents a clock variable whose value cycles continuously from 0 to 1 once per second when it appears inside a dynamically updated object such as a Dynamic.

Clock[t]
cycles from 0 to t every t seconds.

Clock[vmax,t]
cycles from 0 to every t seconds.

Clock[{vmin,vmax},t]
cycles through the range to every t seconds.

Clock[{vmin,vmax}]
cycles through the range to over the course of seconds.

Clock[{vmin,vmax,dv}]
cycles from to in steps of dv, spending dv seconds at each value.

Clock[{vmin,vmax,dv},t]
cycles from to in steps dv every t seconds.

Clock[vals,t,n]
goes through the cycle only n times, then always yields only the maximum value.

DetailsDetails

  • The base for all times used by Clock is the creation time of the cell in which Clock appears.
  • Clock[Infinity] gives a value that ranges from to at a rate of one unit per second.
  • Clock[{vmin,Infinity}] gives a value that ranges from to at a rate of one unit per second.
  • Clock[{vmin,Infinity,dv}] ranges from to in steps of dv, spending dv seconds at each value.

ExamplesExamplesopen allclose all

Basic Examples  (2)Basic Examples  (2)

Create a clock value that cycles continuously from 0 to 1 once per second:

In[1]:=
Click for copyable input
Out[1]=

Use Clock to trigger updates for some time interval:

In[1]:=
Click for copyable input
Out[1]=
Introduced in 2007
(6.0)