[Freegis-list] RE: Freegis-list digest, Vol 1 #135 - 8 msgs

[Shankar Narayanan.K , STC Chennai]

Dear all,
		This is in continuation with the query I posted on dynamic
segmentaion earlier.I am not using arcview/arcinfo etc right now.(We will
get it soon)So I may not be able to understand 'coverages' and lingo
specific to that product.Can you pls explain this in general terms.I am
putting whatever I've understood about DS and pls clarify it.

1) Say I am having a theme named roads (obviously including .shp,.dbf,.shx.)

2) I want to view the roughness of the road throughout it's length (which is
not a field in the .dbf table)

3) Now,I am creating an event table with fields Route_id,From,To,
attribute(with values good,bad,fair etc..).

Note: Is route_id  the foreign key that connects my roads.dbf and the event
table?

5) How will the map viewer software recognises that the event table values
belong to roads.dbf?

6) How can it plot the segments(line) in the map over the "roads" theme?

7) How the "FROM" & "TO" values are properly recognised and placed in the
map?Because from what I've understood it is the .shp file that holds the
coordinate info and will be used for plotting of lines in the map.Here are
we creating a .shp for every record in the event table?

Regards,
Shankar

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