Hi Daan,
I'd like to re-project these two pipeline maps of Europe and Russia, but I cant find any projection information written on either map. Just by looking at them would you be able to make some educated guesses as to which projections they might be in?
That would be great - there are so many projections, I'm a bit lost trying to figure out which ones they are.
http://www.entsog.eu/public/uploads/fil ... NE2014.pdf
http://www.oilforum.ru/index.php?app=co ... h_id=26386
Thanks
Martin
Pipeline map re-projection
Re: Pipeline map re-projection
Hello Martin.
The Russian map is almost certainly a pure conic, but which one and what its standard parallels are would take a fair amount of time to tease out.
The Entsog map is also probably a conic, but I say that with less confidence due to the lack of a graticule on the maps.
In both cases, I would expect Lambert conformal conic to be the most likely candidate. However, a lot of Russian maps use domestic inventions that intend to optimize for this or that. The map might be in one of those. Geocart does not have any of those Russian domestic conics. Information on them is not easy to come by.
If you want me to narrow the projections down enough for you to reproduce the projection (or reproject the maps), it would take more than trivial work, and I would need to bill for it. Please contact me offline in that case.
Best,
— daan
The Russian map is almost certainly a pure conic, but which one and what its standard parallels are would take a fair amount of time to tease out.
The Entsog map is also probably a conic, but I say that with less confidence due to the lack of a graticule on the maps.
In both cases, I would expect Lambert conformal conic to be the most likely candidate. However, a lot of Russian maps use domestic inventions that intend to optimize for this or that. The map might be in one of those. Geocart does not have any of those Russian domestic conics. Information on them is not easy to come by.
If you want me to narrow the projections down enough for you to reproduce the projection (or reproject the maps), it would take more than trivial work, and I would need to bill for it. Please contact me offline in that case.
Best,
— daan
Re: Pipeline map re-projection
Hi Daan,
Thank you very much for the advice and the offer. Its not for a commercial project so I'm not going to throw any money at it though. I'm just trying to piece together a half-decent map of the oil industry to use as reference material for one of the map layers on the globe I'm making. http://worldmap.harvard.edu/maps/oilandgasmap
Its definitely tricky trying to get the standard parallels to match and the other geo-referencing software was also struggling too, especially with the Russian one, so it may well be in some obscure projection. I think Ill just opt for putting hundreds of control points on them and see how it goes.
Martin
Thank you very much for the advice and the offer. Its not for a commercial project so I'm not going to throw any money at it though. I'm just trying to piece together a half-decent map of the oil industry to use as reference material for one of the map layers on the globe I'm making. http://worldmap.harvard.edu/maps/oilandgasmap
Its definitely tricky trying to get the standard parallels to match and the other geo-referencing software was also struggling too, especially with the Russian one, so it may well be in some obscure projection. I think Ill just opt for putting hundreds of control points on them and see how it goes.
Martin