title: Is there a way to define the first column as site names for specaccum in the R vegan package to avoid errors?
body: <p>I believe I'm struggling with a data frame issue. In my data set, my first column is site names, call them Tech 1 through Tech 8. The rest of my columns are each assigned to one species, with binary 0s or 1s beneath to signify their presence in each site. Every time I use the specaccum function, it spits back "Error in colSums(x): 'x' must be numeric". Removing the first column results in only 1 site and errors, but including the column only results in more errors. How can I manipulate my data frame such that the first column becomes the site names? Thanks in advance</p>