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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>daan,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Good! And thanks for your
clarification, with which I agree. I am betwixt and between on this
issue. Cartography is a marvelous entertainment in the abstract that
needn’t be / shouldn’t be encumbered with a datum. However,
once culture is presented on the map (other than a cartoon coastline or some
such for reference), then the geodetic datum is critical. In this era of
computers and GIS, the issue of small scale versus large scale is irrelevant.
Before culture ever gets to a paper map where scale is relevant, it lives
forever in a database and can be re-presented at any scale one might
(mistakenly) desire. That’s not good. So, I guess I agree
with you for cartoons, but not for real data. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Noel<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<hr size=2 width="100%" align=center tabindex=-1>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
proj-bounces@lists.maptools.org [mailto:proj-bounces@lists.maptools.org] <b><span
style='font-weight:bold'>On Behalf Of </span></b>strebe<br>
<b><span style='font-weight:bold'>Sent:</span></b> Sunday, March 29, 2009 5:31
PM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">PROJ.4
and general Projections Discussions</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Proj] datum matters</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><br>
On Mar 29, 2009, at 1:45:42 PM, "Noel Zinn"
<ndzinn@comcast.net> wrote:<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'><span style='orphans: 2;text-align:auto;widows: 2;-webkit-border-horizontal-spacing: 0px;
-webkit-border-vertical-spacing: 0px;-webkit-text-decorations-in-effect: none;
-webkit-text-size-adjust: auto;-webkit-text-stroke-width: 0;word-spacing:0px'>Fictitious
datum? That’s offensive, daan. When the datum is ignored,
cartography is an entertainment merely purporting to represent the real world.
That’s fine, but (the) datum is hardly fictitious.
-Noel </span></font><font color=black><span style='color:black'><o:p></o:p></span></font></p>
</span>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Noel: I did not call the datum fictitious in general. Please read more
carefully so that people do not get attributed with and then taken to task for
words and ideas they do not espouse.<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>If no datum is attached to the coordinates, and if the
projection/coordinate conversion software requires a datum because it has
conflated projection and coordinate transformation, then the user would be
forced to declare some fictitious datum in order to satisfy the ideological
requirements of the software. That is what I referred to as a "fictitious
datum". If that is "offensive", then feel free to elaborate,
though I am very much at the point of bowing out of the conversation. (I will
not, however, take my marbles and go home.)<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Regards,<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>— daan Strebe<o:p></o:p></span></font></p>
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