Reputation

Hi,

is it possible to get reputation value of a steemit user at particular time? I would like to build a graph how user's reputation grew from post to post.

get_accounts method returns actual reputation.

Probably I can calculate reputation of a author. For example I get each author's post using get_discussions_by_author_before_date method. and then summarize all rshares of all votes. But it is very calculation intensive. Maybe there is a simpler way?

Thanks