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Axis order in CRS used for INSPIRE data

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Dear all,

A question has for a while been on my disk, and despite a lot of reading I cannot find the right answer:

Why has all of the possible CRS for INSPIRE data listed in table 1 in TG DS CS axis order N,E? (And not E,N)?

E,N is most common for spatial data - many spatial data is stored, managed and exchanged in CRS:EPSG=25832 which has axis order E,N and is not in the before mentioned table. And most common used GIS expect data in CRS with axis order E,N and not the opposite.

I can read in https://themes.jrc.ec.europa.eu/pages/revision/48364 that back in 1999 there was a workshop on recommendations for pan-EU CRS. A report was written (pub03ProceedingsWS1999.pdf) but it is not available in the page - can someone repair the link?

The axis-order difference in EPSG:3044 and EPSG:25832 is discussed in https://github.com/OSGeo/proj.4/issues/571. Why has INSPIRE chosen N,E???

Replies

    • Public

    By Jordi ESCRIU

    Dear Lars,

    Thank you for your question!

    Please have look at the topic https://themes.jrc.ec.europa.eu/discussion/view/3771/order-of-coordinate-axis-in-the-transverse-mercator-projection-etrs89-tmzn, which I opened time ago almost at the beginning of the thematic cluster activity.

    It contains a link to a discussion taken place in the INSPIRE Forum, where you may find some extra information.

    I guess the people better positioned to answer your question are those who participated in INSPIRE TWG-RS. I will try to contact some of them to interact in this topic.

    About the Workshop “Spatial Reference Systems for Europe”, I realized about the broken link recently - I will repare the link as soon as possible. 

    Meanwhile, you can access the document through this link: http://www.crs-geo.eu/pub02ShortProceedingsWS1999.pdf

    And other related references here:

    http://www.crs-geo.eu/references.htm

    Jordi

    • Public

    By Artur SEARA

    Good morning. Maybe there is a more complex explanation or it has to do with the order used in geodetic coordinates (latitude, longitude) and the derived mapping coordinates just follow the same order (Northing, Easting)

    • Public

    By Jordi ESCRIU

    Dear Lars,

    The link is now corrected.

    The correct page is https://themes.jrc.ec.europa.eu/pages/view/37693/workshop-%E2%80%9Cspatial-reference-systems-for-europe%E2%80%9D 

    https://themes.jrc.ec.europa.eu/pages/revision/48364 seems to be a revision snapshot of the page, i.e. not the current version of the page.

    Thank you for pointing me to this issue.

    Jordi 

    • Public

    By Lars Erik STORGAARD

    Thank you all for the answers, links etc. We will start the studie and reading.

    • Public

    By Jordi ESCRIU

    Any contributions on the initial question from Lars are welcome!

    @Lars - Hope to have any new views / questions from you after your study / reading.

     Jordi

    • Public

    By Peter PARSLOW

    Simply stated, INSPIRE has chosen a 'geodetically correct' Coordinate Reference System (i.e. one fixed to the European tectonic plate, and therefore useful for the widest range of use cases) - and that has latitude / longitude axes order.

    The idea that "E N" is "most common" may be true in certain domains, but in marine navigation, air navigation, and many other 'world wide' geography domains, lat/long is more common. Except perhaps in North America.

    Note: I work for Ordnance Survey; we maintain our own national grid system, which is a projected 'rectangular' grid, expressed as east, north in metres from an origin. Useful for some things, and at some scales. And because we keep it up to date with tectonic movement, it works for land ownership. But it isn't popular with GPS folks.

    Of course, the answer is always to be explicit about what CRS (& therefore coordinate order) is being used in any bit of data.

    • Public

    By Jordi ESCRIU

    Thank you Peter!

    Nice and clear explanation.

    Jordi

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