[Qgis-user] snapping, revisited

[Christopher Barker]

Micha Silver wrote:
> There are two separate operations 
> mixed together: the mouse tolerance, and snapping.

Thanks for bringing this up -- this is an oddity that has confused me 
from the early days of the editing branch.

snapping and "mouse tolerance" are completely different concepts and 
should be handled separately.

> Is it possible to set some sane default number for the "search radius" 
> rather than zero? After each install, when you first try the information 
> button, you get the popup window suggesting to set the "search radius". 
> You have to check the scale, calculate some logical number for the 
> search radius, then open Options-> etc.  to set the default. Could be a 
> bit of a stumbling block for beginning users.

absolutely -- and besides not having a default -- it makes little sense. 
mouse tolerance should be in pixel units, and be completely scale 
independent. In fact, you need this so that if you need to distinguish 
between two points that are close together, you can zoom in to make the 
appear farther apart.

-Chris

-- 
Christopher Barker, Ph.D.
Oceanographer

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