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<p>Hi all,</p>
<p>Piero is right - what I said applies to the case that grid and
CRS axes align - which addresses the vast marjotiy of cases in my
experience. However, OGC coverages (to some extent CIS 1.0, more
with CIS 1.1) can also address more complex cases (irregular
grids, grids embedded in higher-dimensional spaces, grids given by
sensor models, etc.), but naturally description of such grids gets
increasingly involved.</p>
<p>To put it differently: parameters omitted use defaults that try
to keep usage simple.</p>
<p>My 2 philosophical cents,</p>
<p>Peter<br>
</p>
<br>
<div class="moz-cite-prefix">On 04/11/2017 09:13 AM, Piero Campalani
wrote:<br>
</div>
<blockquote
cite="mid:CAMp9JaOT3Xay__VevcgJAUj7u2qSj=CivV+8seSTPw5a6_Df+g@mail.gmail.com"
type="cite">
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<div class="gmail_extra">
<div class="gmail_quote">
<div style="font-family:tahoma,sans-serif"
class="gmail_default">Hi Jukka,</div>
<br>
On 10 April 2017 at 16:56, <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:gdal-dev-request@lists.osgeo.org"
target="_blank">gdal-dev-request@lists.osgeo.org</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div id="gmail-:1kt" class="gmail-a3s gmail-aXjCH
gmail-m15b585e2d624af4f">Andrea wrote:<br>
<br>
If there is no 1:1 correspondence between geographic and
raster space axis, then I see no other way but to use
Function to explicitly correlate the two.<br>
How would you propose to proceed instead?<br>
<br>
Perhaps with offset vectors?</div>
</blockquote>
</div>
<br>
<br>
<div style="font-family:tahoma,sans-serif"
class="gmail_default">l'lI just chime in to confirm you
that: yes, offset vectors are the right means.<br>
<br>
</div>
<div style="font-family:tahoma,sans-serif"
class="gmail_default">There is no need for raster and CRS
axis to have 1) the same dimensionality (you want to
describe a 2D grid in a 3D cube) and neither 2) the same
axis ordering.<br>
<br>
</div>
<div style="font-family:tahoma,sans-serif"
class="gmail_default">Indeed raster/CRS axis pairing can
make sense only when the raster is diligently aligned with
the CRS space, otherwise that would makes no sense.<br>
<br>
</div>
<div style="font-family:tahoma,sans-serif"
class="gmail_default">@see<br>
</div>
<div style="font-family:tahoma,sans-serif"
class="gmail_default"><a moz-do-not-send="true"
href="http://rasdaman.org/wiki/PetascopeUserGuide#GridaxislabelsandCRSaxislabels">http://rasdaman.org/wiki/PetascopeUserGuide#GridaxislabelsandCRSaxislabels</a><br>
<a moz-do-not-send="true"
href="http://rasdaman.org/attachment/wiki/PetascopeUserGuide/GridDomainSetAxes.png">http://rasdaman.org/attachment/wiki/PetascopeUserGuide/GridDomainSetAxes.png</a><br>
<br>
hth,<br>
-Piero<br>
</div>
<br>
</div>
</div>
<br>
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<br>
<pre class="moz-signature" cols="80">--
Dr. Peter Baumann
- Professor of Computer Science, Jacobs University Bremen
<a class="moz-txt-link-abbreviated" href="http://www.faculty.jacobs-university.de/pbaumann">www.faculty.jacobs-university.de/pbaumann</a>
mail: <a class="moz-txt-link-abbreviated" href="mailto:p.baumann@jacobs-university.de">p.baumann@jacobs-university.de</a>
tel: +49-421-200-3178, fax: +49-421-200-493178
- Executive Director, rasdaman GmbH Bremen (HRB 26793)
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tel: 0800-rasdaman, fax: 0800-rasdafax, mobile: +49-173-5837882
"Si forte in alienas manus oberraverit hec peregrina epistola incertis ventis dimissa, sed Deo commendata, precamur ut ei reddatur cui soli destinata, nec preripiat quisquam non sibi parata." (mail disclaimer, AD 1083)
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