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<p>Le 21/05/2018 à 16:56, Mateusz Loskot a écrit :</p>
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<blockquote type="cite"
cite="mid:CABUeae_aJmVvfdezxDdiS00c4aah6JbQPCEbBDHbZe-2xD-s0w@mail.gmail.com">
<p>My point was, that your conclusion above, ie. "does not include
modification" seems to be a bit premature and inaccurate for the
overal picture of what is permitted or and what is not.</p>
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<p align="justify">It seems to me that at least, <a
moz-do-not-send="true" href="http://www.epsg.org/TermsOfUse">http://www.epsg.org/TermsOfUse</a>
§6vii does not allow modifications while keeping the EPSG name.
But actually we should look at the intent. The terms of use does
allow <u><b>some</b></u> modifications while keeping the EPSG
name, provided that those modifications are among the
modifications authorized in table 1. The intent is to allow
modifications that do not change the numerical results of map
projections. So for example replacing an <i>"inverse flattening
factor"</i> by a <i>"semi-minor axis length"</i> is allowed
(provided that the axis length is correctly calculated, of course)
because it does not change map projection results, but changing
axis order is not. In my understanding if we change axis order,
then the code for that CRS should not have "EPSG" in its name any
more.</p>
<p align="justify"><br>
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<blockquote type="cite"
cite="mid:CABUeae_aJmVvfdezxDdiS00c4aah6JbQPCEbBDHbZe-2xD-s0w@mail.gmail.com">
<p>
</p>
<p wrap="">Especially, that the ToU only explicitly forbids
distribution for profit.</p>
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<p align="justify">This is §2, which is relaxed by §6iii saying <i>"The
data may be included in any commercial package provided that any
commerciality is based on value added by the provider and not on
a value ascribed to the EPSG Dataset which is made available at
no charge."</i> My understanding is that it means that if
someone was selling a product, the main reason why a client would
want to buy that product would not be for having a copy of EPSG
data; it must rather be for other functionalities provided by the
product.</p>
<p align="justify"> Martin</p>
<p align="justify"><br>
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