[Qgis-user] two items for help

[Firstname Lastname]

First, in settings, options, digitizing:  i have clicked on 'enable
snapping by default.'  when i am digitizing polygons, the snapping does not
seem to be engaged.   i have set the snapping tolerance to 13 pixels.  does
anyone know why the snapping does not work?  i assume that these are the
correct settings for snapping to polygons.

second.  i have imported several elevation model files into qgis.  they
come in as x,y,z, elevation points.  the original files are of the type:
GDBINDEXES, GDBTABLE FILE, GDBTABLX, and SPX.  can someone help me with a
workflow for gridding and contouring these elevation files so that they
look like either a contoured topo map or density contoured DEM.

-- 
Byron Veilleux, MSc. P.Geo
Conjugate Geologic Services Limited
Calgary, Alberta Canada
byron at conjugategeo.com
Cell:4037108414

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