[OSM-newbies] Power lines

James Ewen ve6srv at gmail.com
Sat Apr 23 16:20:22 BST 2011


On Sat, Apr 23, 2011 at 9:00 AM, Dave F. <davefox at madasafish.com> wrote:

> For future reference, that you already probably know, it's easier to draw
> the power line first,. putting a node at each occurrence of a pylon. Then
> when you've finished, select one node, add the tags for the pylon, then
> select another node & press 'R' for replicate... and so on until you're
> done.

Actually, it wasn't hard to put the pylons in first, and then string
the power line between them.

The aerial photography isn't super detailed, so it was easier to pick
out the base of the pylon first, then press R to replicate the tags.
Stringing the power line was easy, with Potlatch allowing me to click
"close enough" to the pylon for it to understand where I wanted the
line to attach.

Because of parallax error, stringing the line along where the lines
are on the photo would put the lines well off from where they should
be.

BTW Stewart... I don't want to import the power lines in Ontario... 8)

I was playing in an area where I had to create my own roads from GPX
traces that I gathered yesterday. Silly oil companies want to dig up
the old road, so they blasted a new road through the bush.

Again, OSM is the first map available for the area.

http://www.openstreetmap.org/browse/way/109684405

I love OSM... I go out in the bush, collect GPX tracks, draw maps of
the area, overlay my wireless shots, and create a presentation for my
supervisors, salesmen, and customers. They all wonder where I get all
the fancy maps and such when they can't find anything like that
themselves.

I usually end up with better maps than the customer's GIS department created.

James
VE6SRV



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