![]() ![]() Alternatively, a clock objectĬan be specified directly, this can be useful if a clock should be sharedīetween several objects – under most circumstances, however, a user should not ![]() Changing this will therefore change the dt ofĪll objects that don’t specify one. Simulation is determined by dt, if it is specified, or otherwise byĭefaultclock.dt. Object creation time: dt, when, and order. You cannot, however, switch to a dt of 0.3ms, becauseġ00ms are not an integer multiple of 0.3ms.Įvery simulated object in Brian has three attributes that can be specified at for 1000 steps)Īnd then switch to a dt of 0.5ms, the time will then be internally For example, youĬan simulate an object for 100ms with a time step of 0.1ms (i.e. Note that a change of dt has to be compatible with the internal representation ofĬlocks as an integer value (the number of elapsed time steps). Objects at once by assigning a new value to Clock.dt. This way, you can later change the dt for several Object with the clock keyword argument (instead of dt). ![]() when you cannot useĭefaultclock.dt) then you might consider creating a Clock object explicitly and then passing this clock to each To change the dt value of several objects at the same time (but not for all of them, i.e. To change the time step between runs for objects that do not use the defaultclock, you cannot directly change theirĭt attribute (which is read-only) but instead you have to change the dt of the clock attribute. dt = 0.01 * ms run ( full_time - initial_time ) Simulation, you can create the object in the beginning of your simulationĪnd then set its active attribute. Note that if you do not want to run an object for the complete duration of your objects that haveīrianObject.invalidates_magic_network set to False) are ignored, e.g.Ĭreating new monitors is always possible. In these checks, “non-invalidating” objects (i.e. when a new input source and synapses should beĪdded to a network at a later stage), use an explicit Network object. Of previously run objects and new objects, an error will be raised. If neither of these two situations apply, i.e., the network consists of a mix Run() call, it will continue that simulation at the previous time. Simulation only consists of objects that have been simulated in the previous Time 0 (corresponding to the creation of a new Network object). Objects that have not been run, it will start a new simulation starting at You want to continue a previous simulationįor this, it uses the following heuristic: if a simulation consists only of When you use more than a single run() statement, the magic system tries toĭetect which of the following two situations applies: ![]()
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