[ROOT] Re: time labels

From: Damir Buskulic (buskulic@lapp.in2p3.fr)
Date: Thu Jul 20 2000 - 14:29:24 MEST


Hi Anton,

Anton Fokin wrote:
> thanks for your input. I agree that it is not obvious
> how the drawing algorithm should behave in different cases
> but at least a few suggestions can be made. I think you
> can check a user time format string and then
> 
> Do not repeat the same labels, i.e. avoid
> 
> ---|------|-----|-----|---
>   Oct    Oct   Oct   Nov
> 
> case and draw
> 
> ---|------|-----|-----|---
>   Oct                Nov
> 
> instead if a user wants to write month labels only.

I'm not sure I agree on this one. It is the user responsibility to know
what is the time frame he/she is displaying. It seems to me it could
bring some undesirable side-effects. The default behaviour should choose
the best format. Perhaps is it possible to send to the user, via a
method call, the best format length ("sec" or "months" or whatever)
depending on the axis limits. Then the user may choose an appropriate
(and private) format.

> Then set the first label at a point where month
> actually starts. The same is true for hours, minutes, etc.
> Of course some calculations are needed cause a year has
> 12 months but a hour has 60 minutes :)

These calculations are already done. Is it interesting to have access to
their result ?

Cheers

Damir

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