GM_RotD_cal: A Function for Combination of Two Rotated Ground Motions

In wltcwpf/RCTC: The Rotated Combination of Two-Component Ground Motions

A Function for Combination of Two Rotated Ground Motions

Description

This function computes RotD with 180 rotated angles and Geometric Mean of RotD with 90 angles

Usage

GM_RotD_cal(
  data1,
  data2,
  period_t,
  damping,
  time_dt,
  fraction = 0.7,
  Interpolation_factor = "auto"
)

Arguments

data1	The first horizontal component of acceleration ground motion, in g
data2	The second horizontal component of acceleration ground motion, in g
period_t	A array of oscillator periods
damping	Damping ratio
time_dt	Time step of two time series. These two datasets have the same time step
fraction	A fraction for subset selection to speed up calculation. 0 is using all dataset. 0.7 is recommended for RotD50 if the input data are Sinc interpolated (default); 0.5 is recommended if GMRotI50 is also interested; 0.0 should be used regarding for RotD00
Interpolation_factor	The specific value depends on sampling rate, the detailed explanation is described in the PEER report. Users can give their desired value, or can use defult "auto", which will compute Interpolation_factor according to time step automatically.

Value

A list is returned with RotD, GMRotD, number of selected subsets points, threshold values, PGARotD (in g), PGVRotD (in cm/s), and PGDRotD (in cm)

wltcwpf/RCTC documentation built on March 5, 2023, 11:01 p.m.