From: Mark Thomas <ruby@...>
Date: 2008-06-24T23:18:03+09:00
Subject: Re: date intervals for graphs

On Jun 23, 3:24 pm, Marcelo Barbudas <nos...@gmail.com> wrote:
> Hi,
>
> I'm in a position where I have to create dynamic date based Line graphs.
> By dynamic I mean the start and end dates are variable and the output
> should depend on the time period.
>
> For example if the date interval is 7 days I would have to display 7
> points of data. If the date interval is 100 days I would have to display
> it by months since 100 points of data would be too much. It has to be
> grouped somehow.
>
> Is there a library that does this automatically?
>
> If not, what would be the best solution for such a problem?
>
> I was thinking making 1 data point = 1 day. Then arbitrarily choose that
> I want to display a max amount of 15 points per graph. Get the data for
> those 15 points and plot the graph according to that.
>
> What problems could appear with this version?
>
> --
> M.

Why is 100 points too much? If your graph will be 200 pixels wide or
more, you've got room for them.