Description Usage Arguments Value Examples

View source: R/ratemeter_sim.R

Plot simulated ratemeter readings once per second for 600 seconds. The meter starts with a reading of zero and builds up based on the time constant. Resolution uncertainty is established to express the uncertainty from reading an analog scale, including the instability of its readings. Many standard references identify the precision or resolution uncertainty of analog readings as half of the smallest increment. This should be considered the single coverage uncertainty for a very stable reading. When a reading is not very stable, evaluation of the reading fluctuation is evaluated in terms of numbers of scale increments covered by meter indication over a reasonable evaluation period.

1 2 3 4 5 6 7 | ```
rate_meter_sim(
cpm_equilibrium,
meter_scale_increments,
trials = 600,
tau = 9.5,
log_opt = ""
)
``` |

`cpm_equilibrium` |
The expected count rate. |

`meter_scale_increments` |
The meter scale increments. |

`trials` |
Number of seconds to run simulation. Default = 600. |

`tau` |
equal to the Resistance * Capacitance of the counting circuit. Units = seconds. Default set to 9.5, which provides 90 seconds. If the user does not know the time constant, but has an estimate of equilibrium in some time, use tau.estimate. |

`log_opt` |
If logarithmic scale is needed, set to "y". If set to anything but blank (default), scale will be logarithmic. |

Plot of simulated meter reading every second..

1 2 3 | ```
rate_meter_sim(cpm_equilibrium = 270, meter_scale_increments = seq(100, 1000, 20))
rate_meter_sim(cpm_equilibrium = 2.7e5, meter_scale_increments = seq(2e5, 1e6, 2e4))
rate_meter_sim(450, seq(20, 1000, 20), trials = 1200, tau = 24.8534)
``` |

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