Dear Jukka,
thank you for clarifying this, now it makes sense. So far I could not identify
instructions in the documentation on how to specify a URL identifier (this
seems the most sensible option when the CRS is not indexed by the IOGP). Is it
supported by MapServer?
Thank you.
--
Luís Moreira de Sousa
Email: [email protected]
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‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Tuesday, November 13, 2018 5:03 PM, Rahkonen Jukka (MML)
<[email protected]> wrote:
> Hi,
>
> I guess the WMS 1.3.0 standard, page 15:
>
> “Every Layer CRS has an identifier that is a character string. Two types of
> Layer CRS identifiers are permitted:
>
> “label” and “URL” identifiers:
>
> ⎯Label: The identifier includes a namespace prefix, a colon, a numeric or
> string code, and in some instances a comma followed by additional parameters.
> This International Standard defines three namespaces: CRS, EPSG and AUTO2, as
> discussed below.
>
> ⎯URL: The identifier is a fully-qualified URL that references a
> publicly-accessible file containing a definition of the CRS that is compliant
> with ISO 19111.
>
> -Jukka Rahkonen-
>
> Lähettäjä: mapserver-users [mailto:[email protected]]
> Puolesta Luís Moreira de Sousa
> Lähetetty: 13. marraskuuta 2018 17:33
> Vastaanottaja: Jean-Christophe Malapert <[email protected]>
> Kopio: [email protected]
> Aihe: Re: [mapserver-users] Using a CRS not indexed by the IOGP
>
> Hi Jean-Christophe,
>
> to which OGC standard are you refereing to, regarding the namespaces CRS,
> EPSG and AUTO?
>
> Thank you.
>
> --
>
> Luís Moreira de Sousa
>
> Email: [email protected]
>
> RingID: ring:7ca91d83f4f9dec82fec9f1144b8e5c1ef2a110c
>
> URL: https://ldesousa.github.io
>
> Sent with [ProtonMail](https://protonmail.com) Secure Email.
>
> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
>
> On Tuesday, November 13, 2018 10:37 AM, Jean-Christophe Malapert
> <[email protected]> wrote:
>
>> Hello,
>>
>> I got the same problem with Mars planet with IAU2000 namespace. I have
>> modified the mapserver code to make it works (I have still a couple of tests
>> to check everything is fine).
>>
>> However, CRS, EPSG and AUTO namespaces are defined by OGC. So, if you define
>> a new one:
>>
>> - 1/ I am not sure it is compatible with OGC standards
>>
>> - 2/ I am not sure clients will understand this new namespace
>>
>> In my case, I have also written the client.
>>
>> If you are interested, I can share my current development about the
>> mapserver code.
>>
>> Regards,
>>
>> Jean-Christophe
>>
>> Le lun. 12 nov. 2018 à 17:38, Luís Moreira de Sousa
>> <[email protected]> a écrit :
>>
>>> Dear all,
>>>
>>> I am developing a WMS with layers defined in a CRS that is not indexed by
>>> the IOGP. This CRS is defined within a specific PROJ namespace (e.g.
>>> init=namespace:001, just like others.extra or esri.extra) and is used
>>> correctly both by PROJ and GDAL. However, if I add this namescape to the
>>> "wms_srs" parameter in the mapfile, any request will be met with the
>>> following error message:
>>>
>>> msWMSLoadGetMapParams(): WMS server error. Unsupported SRS namespace (only
>>> EPSG and AUTO currently supported).
>>>
>>> I find this strange, is it only possible to use the CRSs indexed by the
>>> IOGP? Is there any way to convince MapServer to accept any other namespaces
>>> available in the PROJ database?
>>>
>>> I am awere I may create a fake IOGP index, but this is likely to create a
>>> good deal of confusion among users. I would rather make it clear this is a
>>> specific CRS.
>>>
>>> Thank you.
>>>
>>> --
>>>
>>> Luís Moreira de Sousa
>>>
>>> Bowlespark 8
>>>
>>> 6701 DN Wageningen
>>>
>>> The Netherlands
>>>
>>> Phone: +31 628 544 755
>>>
>>> Email: [email protected]
>>>
>>> RingID: ring:7ca91d83f4f9dec82fec9f1144b8e5c1ef2a110c
>>>
>>> URL: https://ldesousa.github.io
>>>
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>>>
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>>>
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