Given the two databases shown in Figure $1,$ develop fragility curves for a reinforced concrete bridge column across four damage states using two different approaches: cloud method and stripe method.

The databases include pairs of ground motion intensity measure $($here$,$ peak ground acceleration $($PGA$)$ in g$)$ and seismic demand $($here$,$ maximum column drift in $\%).$

Both the demand and capacity are lognormally distributed. Table $1$ presents the median and dispersion of the column$$s capacity models for the four damage states.

Assume that $(1)$ for the case of the cloud method, all data are regarded as non$-$collapse, while $(2)$ for the case of the stripe method, the data contain both non$-$collapse and collapse events $($collapse damage threshold $=10\%$ drift$).[40$ points$]$

I would appreciate it if you could provide R language coding for solving the task.