153 reputation
110
bio website google.com/profiles/Vanuan
location Odessa, Ukraine
age 25
visits member for 1 year, 10 months
seen Sep 25 at 22:42

MS in CS. Graduated in 2010.

My English is far from perfect... sorry for my mistakes. I appreciate any corrections.


Sep
15
awarded  Benefactor
Sep
12
revised Interpolate data from multiple gpx tracks
added 146 characters in body
Sep
12
comment Matching GPS tracks
possible duplicate of Different approaches for map matching : links / ideas?
Sep
11
comment Interpolate data from multiple gpx tracks
@radouxju I do not want to interpolate height, and yes, I want to find the median line of each lane.
Sep
11
comment Interpolate data from multiple gpx tracks
But nobody so far has an answer (besides mine) with a simple explanation of any algorithm that doesn't involve rasterization.
Sep
11
comment Interpolate data from multiple gpx tracks
No, It's just random thoughts on an algorithm. That was before I read articles referenced by julien. Those algorithms are way better.
Sep
11
comment Interpolate data from multiple gpx tracks
youtube.com/watch?v=byJzKjCta3c
Sep
11
comment Interpolate data from multiple gpx tracks
Yet another link: mapconstruction.org/#et_page_7
Sep
10
answered Interpolate data from multiple gpx tracks
Sep
10
comment Interpolate data from multiple gpx tracks
I would add the fourth and fifth steps: filter out cells with lowest value and vectorize the line back.
Sep
10
comment Interpolate data from multiple gpx tracks
Sorry, I'm not into GIS jargon. Could you give an explanation of "digitalise the centerline of the bundle" process? Google doesn't help.
Sep
10
comment Interpolate data from multiple gpx tracks
@Hornbydd Thanks for your edit. Now this algorithm has a clear explanation.
Sep
10
comment Interpolate data from multiple gpx tracks
It is already digital. You mean I should rasterize it first? I'm a bit worried that I would lost precision by rasterizing. I think the algorithm should take into account the error of each measured point. And I have hundreds of those tracks, so doing it by hand would be quite tedious. I want an algorithm, not "how to do it in Foo Application". Thanks for the links, they look promising.
Sep
9
answered Point interpolation in route
Sep
9
comment Interpolate data from multiple gpx tracks
Can you elaborate on rasterizing, adding grids and what is highest value? Are these some GIS system builtin functionality? Say, is it possible to do in QGIS?
Sep
9
comment Interpolate data from multiple gpx tracks
1. Vertices vary with time. 2. No, the data is not truncated, it's basically a loop. 3. I'm not using any GIS system. Hm... This probably should go to StackOverflow then, right? Here's a sample track openstreetmap.org/user/Vanuan/traces/1789135
Sep
9
awarded  Promoter
Sep
9
awarded  Student
Sep
7
asked Interpolate data from multiple gpx tracks
Sep
7
answered (R)SAGA: saga_cmd 2.1.0 error? inconsistency?