meta user
network profile
| bio | website | byte-consult.be |
|---|---|---|
| location | Belgium | |
| age | 38 | |
| visits | member for | 7 months |
| seen | May 14 at 8:51 | |
| stats | profile views | 28 |
I'm a computer scientist, currently doing a lot of work in the asset tracking field. I do plenty of application design, lots of programming and system administration for a living. I'm not a particular expert in a field but I do go deep into a subject/problem which is probably my only specialty ;-)
|
Apr 16 |
awarded | Caucus |
|
Apr 16 |
comment |
Different searching results in local Nominatim and openstreetmap.org You're hitting the border problem when using extracts with geocoding. You'll have to (atleast I did) modify the code and get some polygon defined around the covered area. I've had this with the benelux subset once. I believe the shape files could also help you there. |
|
Feb 10 |
answered | PgRouting routing algorithm from start to end via nodes with restrictions |
|
Jan 29 |
answered | Hosted nominatim services |
|
Jan 14 |
comment |
(When) should I use a GIS-enabled database? Tx for bringing SpatiaLite to my attention, I use sqlite extensively, I didn't know it existed. |
|
Jan 12 |
comment |
GPS Tracking by SMS I'm using gammu-smsd with sqlite3 and it's been running for 4 years now using SIEMENS MC35i , any kind of terminal GSM modem speaking a decent protocol will probably work with it. This is a good suggestion. I also have to add it's running on ubuntu linux on a minimac. |
|
Jan 12 |
comment |
Tracking a vehicle without GPS device Not always. Chances are not every sat is being reflected, but if it is just a question of 10 vs 8 sats used to fix position, the results of 8 will not be so off it becomes an issue for road use. I don't even look at visible metrix, only sats used to determine a fix. You could even hang your GPS receiver upside down under your car using reflections. This is not theory, we've tested this a lot. But I agree with you it's that it's not optimal, you just need to ask the question, how accurate do I really need it... |
|
Jan 7 |
awarded | Autobiographer |
|
Jan 1 |
revised |
What GPS device do I need for vehicle tracking? Updated facts + spell check |
|
Dec 30 |
comment |
slow import via osm2pgsql to postgresql database If you built the executable, you can install it by doing a make install. The files you mention is source code and source headers which are used to build it and after that do not serve a purpose. After that, just use it like you used to do it, there should be no difference |
|
Dec 28 |
comment |
Nearest point on a line ( Spherical / Mercator projection ) I just checked your results on a mercator projection in Google earth, it's about 16 meters off. But it sure looks like it's more... |
|
Dec 28 |
comment |
Trouble with GeoJSON in HTTP GET Request Any chance to see the geoJSON ? And do give us your openlayers versions please. |
|
Dec 28 |
comment |
Nearest point on a line ( Spherical / Mercator projection ) That could indeed be the offset, like I said, I only use it on very small scale so the error margin must be really low using 8 digits. It's indeed just math, not geo-math :) |
|
Dec 28 |
comment |
Nearest point on a line ( Spherical / Mercator projection ) That's about the scale I use it on, no more than that. I use it to see at what time a bus (public transport) passes a stop the closest. I am going to doublecheck it though and put it in a map to 'see' if it projects well on a sphere. |
|
Dec 28 |
comment |
Nearest point on a line ( Spherical / Mercator projection ) It's not my class, just found it after searching a lot ;-) But I use 8 digits precision in my problems, you seem to use 6. That could be the reason, I never noticed any offset here. Thanks for pointing it out, I will doublecheck this soon as I need to know. |
|
Dec 28 |
answered | Another Student in Need of Career Advice |
|
Dec 28 |
comment |
Need advice on hardware/os upgrade I wouldn't buy ANY SSD just like that, recent research of mine to build a postgis database on top of that shows that not any SSD is good for that. It's my conclusion that if you really want to keep your data for years on an SSD and want to do DB crunching, there is almost no other alternative that the Intel DC series |
|
Dec 28 |
comment |
Nearest point on a line ( Spherical / Mercator projection ) My solution below does that, the point on the segment is unknown. I actually have a rather similar problem/solution as mentioned. You can safely use these on small scale's. |
|
Dec 28 |
revised |
Nearest point on a line ( Spherical / Mercator projection ) adding geocalc link update |
|
Dec 28 |
answered | Nearest point on a line ( Spherical / Mercator projection ) |
