Replied at
http://gis.stackexchange.com/questions/131854/spacing-a-set-of-pointswith some
Postgis options...
Brent Wood
From: toni hernández t...@sigte.udg.edu
To: postgis-users@lists.osgeo.org
Sent: Wednesday, January 28, 2015 12:05 AM
Subject: Re: [postgis-users] Evenly distributing
Maybe you can also try to simplify the geometry using X as the tolerance.
http://postgis.net/docs/manual-1.4/ST_Simplify.html
On 25/01/2015 12:54, Dave Barter wrote:
KNN distance
Will that work on a point layer?
I have added a diagram and more detail here
Maybe not on a point.
I was thinking with linestring
On 27/01/2015 11:46, Dave Barter wrote:
Maybe you can also try to simplify the geometry using X as the
tolerance.
http://postgis.net/docs/manual-1.4/ST_Simplify.html
On 25/01/2015 12:54, Dave Barter wrote:
KNN distance
Will that work
Maybe you can also try to simplify the geometry using X as the tolerance.
http://postgis.net/docs/manual-1.4/ST_Simplify.html
On 25/01/2015 12:54, Dave Barter wrote:
KNN distance
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Hey,
I used Nicolas's strategy and it works.
You could slightly improving it by some preprocessing on the linestring
itself
(smoothing or simplifying, depending on your data)
Cheers,
Rémi-C
2015-01-25 22:32 GMT+01:00 Nicolas Ribot nicolas.ri...@gmail.com:
Hello,
You could build the linestring
Hey,
it is unclear what you want and how your data looks like.
For better answer it would be good to have better info.
Maybe a screen of your data, some facts, for what usage (admissible error,
expected quality ..) etc etc.
What you are trying to do (reconstruct a network from sampled pieces) is
These points were created from a GPX file along a road journey so they
crudely map to a line string
Map matching is the term often used to describe the process of assigning
noisy Gpx points to underlying road network.
My problem is a bit more involved.
The GPX points represent the
These points were created from a GPX file along a road journey so they
crudely map to a line string
Map matching is the term often used to describe the process of assigning
noisy Gpx points to underlying road network.
I was thinking compute the KNN distance for each point and remove
If I had a table of points which are irregularly distributed and wanted to
evenly distribute them what would be the best strategy and query?
These points were created from a GPX file along a road journey so they crudely
map to a line string.
I was thinking compute the KNN distance for each
Hello,
You could build the linestring from points (makeLine(geom order by time))
then , with linear referencing (st_lineInterpolatePoint,
st_linelocatePoint), you can divide your linestring by the distance you
want, creating new points.
Then, if you need to keep time information, you could
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