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....ac.jp/~akitaoka/classic9e.html in the graph "Four circles surrounding illusion"). Does anybody has a nice solution, ideally with a possible solution in R? Thanks in advance! Johannes -- Project Coordinator BIOTA West Amphibians Museum of Natural History Dep. of Research (Herpetology) Invalidenstrasse 43 D-10115 Berlin Tel: +49 (0)30 2093 8708 Fax: +49 (0)30 2093 8565 http://www.biota-africa.org http://community-ecology.biozentrum.uni-wuerzburg.de

...this site nor via CRAN it is possible to install the package. Is there any other possibility? Is the package included in any other package? Thanks a lot in advance. With kind regards Johannes -- Project Coordinator BIOTA West Amphibians Museum of Natural History Dep. of Research (Herpetology) Invalidenstrasse 43 D-10115 Berlin Tel: +49 (0)30 2093 8708 Fax: +49 (0)30 2093 8565 http://www.biota-africa.org http://community-ecology.biozentrum.uni-wuerzburg.de

...ld like to use binary data only. At first I thought of generating null models and test the observed occupancy against the randomly generated one. However, this needs more than one species... Any hints are highly appreciated! Best regards Johannes Penner Museum f?r Naturkunde (AG Herpetologie) Invalidenstrasse 43 D-10115 Berlin Tel: +49 (0)30 2093 8708