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+--- Thread: Map Overlay position error? - NSW AU Oceania (/showthread.php?tid=901)
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RE: Map Oerlay position error? - NSW AU Oceania - Tobi - 2014-10-02
(2014-10-01, 10:00)Michael.Sanders Wrote: Maybe something to do with the International Date Line...?Exactly. It has been fixed.
RE: Map Oerlay position error? - NSW AU Oceania - Stephen.Walker - 2014-10-11
Hi,
I have just checked the NSW map - the position error is still present.
Egon, thanks for your suggestion - I have checked the position reporting from 874 - it is ok.
Also, my position on the Oceania area map is correct (harder to be precise due to scale) but the New South Wales map has an error.
I have marked the position error with orange triangles. I know the location of Sth Sydney 1, Brisbane Nth & Albury -one of RossW's stations.
Thanks Ross for the link to your GPS data. For reference, South Sydney ! should be about 10km from the 'Sydney' city marker on the map.
These stations all appear to be out by the same error. Very roughly, the error is -1.25 degrees latitude +0.5 degress longitude.
Regards,
Stephen
RE: Map Oerlay position error? - NSW AU Oceania - Ross.Wheeler - 2014-10-11
(2014-10-11, 11:25)Stephen.Walker Wrote: Thanks Ross for the link to your GPS data. For reference, South Sydney ! should be about 10km from the 'Sydney' city marker on the map.
These stations all appear to be out by the same error. Very roughly, the error is -1.25 degrees latitude +0.5 degress longitude.
OK, to add information to this:
If the "Albury" orange triangle is me, the other two stations shown "nearby" will be:
Wagga-Wagga (the next marker north-north-east of the indicated Albury location)
Corryong (the marker east-south-east of the indicated Albury location)
Both are "roughly" 100km from me (and are both my stations also). Their relative positions look right, but the offset is consistent.
RE: Map Oerlay position error? - NSW AU Oceania - Stephen.Walker - 2014-10-12
(2014-10-11, 22:26)Ross.Wheeler Wrote:(2014-10-11, 11:25)Stephen.Walker Wrote: Thanks Ross for the link to your GPS data. For reference, South Sydney ! should be about 10km from the 'Sydney' city marker on the map.
These stations all appear to be out by the same error. Very roughly, the error is -1.25 degrees latitude +0.5 degress longitude.
OK, to add information to this:
If the "Albury" orange triangle is me, the other two stations shown "nearby" will be:
Wagga-Wagga (the next marker north-north-east of the indicated Albury location)
Corryong (the marker east-south-east of the indicated Albury location)
Both are "roughly" 100km from me (and are both my stations also). Their relative positions look right, but the offset is consistent.
Thanks Ross.
There is a lot of storm activity in NSW at the moment.
The position error is apparent if NSW maps & Oceania maps are compared.
My station is a bout 3km from the cost, but it is a fair way inland on the NSW map.
Tobi & Egon, let me know if you need anymore information on this.
regards,
Stephen
RE: Map Oerlay position error? - NSW AU Oceania - argus42 - 2014-10-13
The lightning strikes appear to be roughly in the correct position but the stations are 150 - 200 km from where they should be.
Argus42
RE: Map Oerlay position error? - NSW AU Oceania - Stephen.Walker - 2014-10-13
Hi argus42,
I agree - Ive attached 2 images of a storm passing through Sydney (Blitzortung & local weather radar). The NSW map is correctly reporting the storm locations, but the stations detecting the strikes are all showing the position error.
regards,
Stephen
RE: Map Overlay position error? - NSW AU Oceania - Egon - 2014-10-15
You are right, its corrected!
Egon
RE: Map Overlay position error? - NSW AU Oceania - Stephen.Walker - 2014-10-16
Thanks Egon.
Regards
Stephen