[R] How to create a new data.frame based on calculation of subsets of an existing data.frame

[Jim Lemon]

I'm probably misunderstanding what you want. I get this from the code I sent:

 VC
[[1]]
 Prob.of.exceedance_1 Prob.of.exceedance_2 Prob.of.exceedance_3
1                    0                    0          0.005343027
 Prob.of.exceedance_4
1           0.01947477

[[2]]
 Prob.of.exceedance_1 Prob.of.exceedance_2 Prob.of.exceedance_3
5                    0                    0           0.00115359
 Prob.of.exceedance_4
5           0.01122235

Two list elements with four values. Perhaps you want a matrix for each
block of Taxonomy and IM.type that has a row for each element of the
block? This often happens with a remotely specified problem.

Jim

On Sat, Dec 21, 2019 at 8:33 AM Ioannou, Ioanna
<ioanna.ioannou using ucl.ac.uk> wrote:
>
> Hello Jim ,
>
> Thank you ever so much for your help. I was truly stuck!
>
> This looks much better and yes I can turn them into a matrix no problem. Indeed I need only the results for ER+ETR_H1,PGA and ER+ETR_H2,Sa. One minor point as it is the VC has 4 values for three cases instead of the aforementioned two. In fact, the third is identical to the first. Could you please optimize?
>