Export GED Dwelling Fractions

[Paul Henshaw]

(Created to describe a part of https://bugs.launchpad.net/bugs/1187008)

It should be possible for the user to export the dwelling fractions separately from population data.

Since the fractions do not in themselves describe any assets, it is not appropriate to export in NRML format so we suggest the use of a CSV format including the following columns:

distribution_group_id (integer),
study_region_id (integer),
country ISO code (three char string),
is_urban (boolean),
occupancy (res/non-res),
building_type (string)
dwelling_fraction (floating point),

Some example data follows:

dg_id,study_region_id,iso,is_urban,occupancy_type,building_type,dwelling_fraction
160,111,ITA,f,Res,UNK,0.08699
160,111,ITA,f,Res,UFB1,0.135
160,111,ITA,f,Res,UFB3,0.138
160,111,ITA,f,Res,UFB4,0.221
160,111,ITA,f,Res,C1L,0.054
160,111,ITA,f,Res,C1M,0.047
160,111,ITA,f,Res,C3L,0.123
160,111,ITA,f,Res,C3M,0.195
161,111,ITA,t,Res,UFB1,0.135
161,111,ITA,t,Res,UFB3,0.138
161,111,ITA,t,Res,UFB4,0.221
161,111,ITA,t,Res,C1L,0.054
161,111,ITA,t,Res,C1M,0.047
161,111,ITA,t,Res,C3L,0.123
161,111,ITA,t,Res,C3M,0.195
161,111,ITA,t,Res,UNK,0.08699
367,220,CHE,t,Res,UFB1,0.135
367,220,CHE,t,Res,UFB3,0.138
367,220,CHE,t,Res,UFB4,0.221
367,220,CHE,t,Res,C1L,0.054
367,220,CHE,t,Res,C1M,0.047
367,220,CHE,t,Res,C3L,0.123
367,220,CHE,t,Res,C3M,0.195
367,220,CHE,t,Res,UNK,0.08699
368,220,CHE,f,Res,UFB1,0.135
368,220,CHE,f,Res,UFB3,0.138
368,220,CHE,f,Res,UFB4,0.221
368,220,CHE,f,Res,C1L,0.054
368,220,CHE,f,Res,C1M,0.047
368,220,CHE,f,Res,C3L,0.123
368,220,CHE,f,Res,C3M,0.195
368,220,CHE,f,Res,UNK,0.08699

[Paul Henshaw (paul-sl-henshaw)]

Updated status - note that I am not convinced proposed format makes sense any more.