Stephane Raynaud wrote:
> On Thu, Mar 6, 2008 at 6:15 PM, Jeff Whitaker <[EMAIL PROTECTED]> wrote:
>   
>> Stephane Raynaud wrote:
>>  > Hi,
>>  >
>>  > this scalebar is a really good idea!
>>  >
>>  > However, I suggest that all parameters must be optional:
>>  > - The position could be by default somewhere in the lower left corner
>>  > (for example). It may be interesting to find a "best" position using
>>  > the algo of legend.
>>  > - Then length could be estimated from automatically from the map 
>> coordinates.
>>  >
>>  >
>>  >
>>  Stephane:  While I agree it would be nice to be able to just say 'give
>>  me a scalebar', I don't think having Basemap choose a default location
>>  and size would be very useful.  You want the scalebar to be where there
>>  is nothing else drawn on the map, and this will be different in every
>>  case.
>>     
>
> Sure, but the algorithm used by legend tries to put the legend where
> there is nothing drawn.
>
>
>   
>> Plus, you probably want the length to be a nice round number, not
>>  an arbitrary fraction of the map domain.
>>     
>
> I was not thinking about a simple fraction, but a nice length taken
> within values derived from a Locator scaled by a fraction on the map
> domain.
>
>   

Stephane:  Sounds reasonable, but I don't have time to work on this 
now.  Patches are always welcome! (including your caching module)

-Jeff

-- 
Jeffrey S. Whitaker         Phone : (303)497-6313
NOAA/OAR/CDC  R/PSD1        FAX   : (303)497-6449
325 Broadway                Boulder, CO, USA 80305-3328


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