Home » railML newsgroups » railml.rollingstock » railML 2.3: Formation attributes shall have values > 0
railML 2.3: Formation attributes shall have values > 0 [message #1320] Fri, 09 October 2015 15:01 Go to next message
Philip Wobst is currently offline  Philip Wobst
Messages: 36
Registered: November 2013
Location: Hanover, Germany
Member
Dear all,

a change to the formation attributes was discussed at the last
coordinator meeting. The aim is to not allow values such as speed="0"
and length="0" for the element <formation>.
A TRAC ticket (#269, http://trac.railml.org/ticket/269) was created for
this change for the upcoming railML 2.3 version. Please provide
feedback/concerns in the forum till the end of October.

Best regards,

Philip
Re: railML 2.3: Formation attributes shall have values > 0 [message #1321 is a reply to message #1320] Wed, 21 October 2015 15:08 Go to previous messageGo to next message
Dirk Bräuer is currently offline  Dirk Bräuer
Messages: 212
Registered: August 2008
Senior Member
Dear Philip,

no objections from our side: Values =0 may be disallowed _if_ the
corresponding attribute is optional.

But please be careful with attributes such as "formation/tareWeight" or
"nettoWeight": What is the difference between both? In German, the rule
is "Tara = Brutto - Netto". Therefore, tareWeight may be zero if
bruttoWeight=nettoWeight and if tareWeight=Tara.

However, in the English wiki it is written:
tareWeight: total tare weight (empty vehicles)
nettoWeight: total net weight (payload only)

which is a little bit confusing for me. ("Payload only" suggests that
nettoWeight is the load and tareWeight is the mass of the empty formation.)

If you disallow these values to be zero, you should define which is to
be used for what. In my opinion, either tareWeight or nettoWeight must
be allowed to be zero in case of formations of vehicles with no payload
(engines/locomotives running light).

With best regards,
Dirk.
Re: railML 2.3: Formation attributes shall have values > 0 [message #1322 is a reply to message #1321] Mon, 26 October 2015 15:52 Go to previous messageGo to next message
Joerg von Lingen is currently offline  Joerg von Lingen
Messages: 59
Registered: May 2011
Member
Remark on weights:
This is already clearly described in the wiki. The only definition I could find
in the www confirms this.

Gross/brutto weight (the total weight) = net weight (the weight of the goods) +
tare weight (the weight of the empty container)

Best regards,
Joerg v. Lingen

Rollingstock Coordinator

On 21.10.2015 15:08, Dirk Bräuer wrote:
> Dear Philip,
>
> no objections from our side: Values =0 may be disallowed _if_ the corresponding
> attribute is optional.
>
> But please be careful with attributes such as "formation/tareWeight" or
> "nettoWeight": What is the difference between both? In German, the rule is "Tara
> = Brutto - Netto". Therefore, tareWeight may be zero if bruttoWeight=nettoWeight
> and if tareWeight=Tara.
>
> However, in the English wiki it is written:
> tareWeight: total tare weight (empty vehicles)
> nettoWeight: total net weight (payload only)
>
> which is a little bit confusing for me. ("Payload only" suggests that
> nettoWeight is the load and tareWeight is the mass of the empty formation.)
>
> If you disallow these values to be zero, you should define which is to be used
> for what. In my opinion, either tareWeight or nettoWeight must be allowed to be
> zero in case of formations of vehicles with no payload (engines/locomotives
> running light).
>
> With best regards,
> Dirk.
Re: railML 2.3: Formation attributes shall have values > 0 [CLOSED] [message #1349 is a reply to message #1322] Wed, 02 March 2016 08:29 Go to previous message
Philip Wobst is currently offline  Philip Wobst
Messages: 36
Registered: November 2013
Location: Hanover, Germany
Member
Dear all,

the corresponding TRAC ticket #269 has been closed with the status 'won't fix' - see http://trac.railml.org/ticket/269 for details.

Best regards,

Philip Wobst
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