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
If you are able to merge them, you can use the plugin Group Stats to
find the number of species available in each QDS.
Randy
--------------------------------------------
Randal Hale
North River Geographic Systems, Inc
http://www.northrivergeographic.com
423.653.3611 [email protected]
twitter:rjhale http://about.me/rjhale
http://www.northrivergeographic.com/introduction-to-quantum-gis
On 03/15/2015 05:59 PM, Pat Brown wrote:
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
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