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Built-in functions : ramp function

ramp(time,slope)

Generates a ramp of slope slope, starting at time time and zero before that time.

Result: the ramp function.

Arguments: time at which to start ramping, slope (positive or negative) of ramp

Example:

the function ramp(20,-7) will have a return value of 0 at time 20 and -70 at time 30