Dear R-helpers,
I have a data.frame (bcpe.lat.m) containing 13 countries, ages 0-50yrs per
month, and the corresponding mu&sigma (see below).
* I would like to limit the age range to include all 12 months for the
1st 5 years and only whole years for all ages thereafter for each of the
countries present in the data frame.
* I would like to create separate data.frames according to the country
the data is from (Bolivia.bcpe.lat.m, brazil.bcpe.lat.m, etc)
I have tried using: c(seq(0,5,1/12),seq(5,50,1) ) to select the desired ages
but am unsure how to repeat that sequence for consecutive countries.
I have tried using: split(bcpe.lat.m, bcpe.lat.m$country) But end up with a
string which I am no longer to select the specific ages I want and all the data
still remains in one variable
Have also looked a 'by', 'apply' and things like 'for (i in 1:13)'
Help with either or both steps would be greatly appreciated.
Greetings from Formentera,
Daniel
Age(yrs) country mu sigma
1 0.00000000 Bolivia 11.42168 0.1014872
2 0.08333333 Bolivia 11.33625 0.1053837
3 0.16666667 Bolivia 11.28417 0.1070594
4 0.25000000 Bolivia 11.21125 0.1083872
5 0.33333333 Bolivia 11.11637 0.1095305
...
602 0.00000000 Brazil 11.54888 0.10839417
603 0.08333333 Brazil 11.46345 0.11255592
604 0.16666667 Brazil 11.41137 0.11434565
605 0.25000000 Brazil 11.33844 0.11576378
606 0.33333333 Brazil 11.24357 0.11698489
...
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