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You should be able to merge all the shapefiles in a directory
(assuming they are all the same projection/attributes). Vector ->
Data Management -> Merge Shapefiles <br>
<br>
If you are able to merge them, you can use the plugin Group Stats to
find the number of species available in each QDS. <br>
<br>
Randy<br>
<pre class="moz-signature" cols="72">--------------------------------------------
Randal Hale
North River Geographic Systems, Inc
<a class="moz-txt-link-freetext" href="http://www.northrivergeographic.com">http://www.northrivergeographic.com</a>
423.653.3611 <a class="moz-txt-link-abbreviated" href="mailto:rjhale@northrivergeographic.com">rjhale@northrivergeographic.com</a>
twitter:rjhale <a class="moz-txt-link-freetext" href="http://about.me/rjhale">http://about.me/rjhale</a>
<a class="moz-txt-link-freetext" href="http://www.northrivergeographic.com/introduction-to-quantum-gis">http://www.northrivergeographic.com/introduction-to-quantum-gis</a></pre>
<div class="moz-cite-prefix">On 03/15/2015 05:59 PM, Pat Brown
wrote:<br>
</div>
<blockquote
cite="mid:CAJdnw=j=bJYi76Bjk8tZ9cQHkwbpPSHFgndL4j04JYXo-Tf8Sg@mail.gmail.com"
type="cite">
<div dir="ltr">I have a number of shapefiles showing the
distribution of various plants. The distribution data are in the
form of polygons as they are recorded by quarter-degree square
(QDS). I want to find out how many species are present in each
QDS. What is the best way to do this? Should I first merge the
shapefiles? is there a way to do this without merging? What
would be the advantages of merging? There are about 200
shapefiles. Many thanks<br>
</div>
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