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<div class="moz-cite-prefix"><font face="Georgia">I am so far out of
my depth here there is no measurement for it.<br>
<br>
Thanks to all...<br>
WV-Mike<br>
====<br>
<br>
On 3/10/2022 11:04 AM, chris hermansen wrote:<br>
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<div dir="ltr"><font face="Georgia">Mike and list,<br>
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<div dir="ltr" class="gmail_attr"><font face="Georgia">On Thu,
Mar 10, 2022 at 5:07 AM Mike Breiding - Morgantown WV via
Qgis-user <<a href="mailto:qgis-user@lists.osgeo.org"
moz-do-not-send="true">qgis-user@lists.osgeo.org</a>>
wrote:<br>
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<div><font face="Georgia">I appreciate you taking the time
for writing such a detailed set of instructions.<br>
However, it is quicker for me to do it manually.<br>
</font> <font face="Georgia"><br>
If the process could be automated then of course it
would be a different matter.<br>
I am working only with the ferns - less than a hundred
records.<br>
The flower plants are over 2500.<br>
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<div><font face="Georgia"><br>
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<div><font face="Georgia">Perhaps others are better
understanding how you want to visualize the distributions,
but what I get from your description is that if you have
100 (or 2500) species then you will have 100 (or 2500)
maps, which sounds unwieldy to me.</font></div>
<div><font face="Georgia"><br>
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<div><font face="Georgia">This paper <a
href="https://www.sciencedirect.com/science/article/pii/S1574954116300097"
moz-do-not-send="true">https://www.sciencedirect.com/science/article/pii/S1574954116300097</a>
might have some interesting suggestions for you.</font></div>
<div><font face="Georgia"><br>
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<div><font face="Georgia">Taken as a database design question,
the idea of having 100 columns to record the presence or
absence of each species is not elegant. A more normalized
approach would be to have your geometry table (geometry of
counties and unique key, perhaps county name) and a
separate table with multiple rows per county, one for each
species present, along with the county unique key, and
then a one-to-many table join between the two.<br>
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<div><font face="Georgia"><br>
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<div><font face="Georgia">Of course this doesn't necessarily
help with the business of visualizing the data...<br>
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<font face="Georgia"><br clear="all">
<br>
-- <br>
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<div dir="ltr"><font face="Georgia">Chris Hermansen ·
clhermansen "at" gmail "dot" com<br>
<br>
C'est ma façon de parler.</font></div>
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<pre class="moz-signature" cols="72"><font face="Georgia">--
Mike Breiding
<a class="moz-txt-link-abbreviated" href="http://www.EpicRoadTrips.us">www.EpicRoadTrips.us</a></font></pre>
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