[Xastir] Road Detail

[Tom Russo]

On Mon, Apr 27, 2009 at 05:38:02PM -0500, we recorded a bogon-computron collision of the <kg5lt at verizon.net> flavor, containing:
> 
> 
> 
> On Apr 27, 2009, at 11:00 AM, Keith Kaiser wrote:
> 
> > I have too much road detail at the higher zoom levels. Which of the
> > new dbfawk files do I need to poke at to adjust for this? This is for
> > the new 2008 Tiger maps.
> 
> 
> You want the edge.dbfawk, Keith.  Look for the rule lines that begin  
> with "/^MTFCC=S"  They are the road rules.  That's where you'll  
> adjust the display and label levels to get what you want.  Notice,  
> that the values are a power of 2 - e.g. 2, 4, 8, 16, 32, 64, etc.  I  
> haven't tried anything other than power-of-2 values.  Someone else  
> familiar with the code can explain what might be the consequence of  
> any integer value other than power-of-2 values.  Perhaps, it's  
> because the default zoom levels, when displaying a map,  are also  
> that way.

You can set these to any value you like.  But the "Zoom Level" options in the
pop-up menu are all powers of two, so the most readily accessible zoom
levels  are those.  You can, however, zoom in and out with the mouse and
wind up at any zoom level possible, and may also set the zoom level to any
value using the "Custom Zoom Level" dialog.  So really, display_level and
label_levl can be anything you like.

-- 
Tom Russo    KM5VY   SAR502   DM64ux          http://www.swcp.com/~russo/
Tijeras, NM  QRPL#1592 K2#398  SOC#236        http://kevan.org/brain.cgi?DDTNM
  In some cultures what I do would be considered normal. 
                                  -- Ineffective daily affirmation