quadrat.test()
On Mon, 2 Apr 2007, emason wrote:
Hello, I stumbled upon an respones you write regarding the quadrat()
function in R. I have been manhandling it all day and I still cannot
get quadrat() or quadrat.test() to work for me. I keep getting this
errror:
Error in quadrat.count.engine(X$x, X$y, b$xbreaks, b$ybreaks) :
xbreaks do not span the actual range of x coordinates in data
Does this mean anything to you? I am at a total loss.
Please always include the command giving the error message in your posting, otherwise we have to guess. Looking at the code and ?quadrat.test, and trying: data(simdat) simdat quadrat.test(simdat) works, but if xbreaks= is set outside x's range: quadrat.test(simdat, xbreaks=seq(-10,0,1)) your error appears. So you are setting an inappropriate xbreaks= argument, or possibly have an inappropriate window in your ppp object.
Thank You, Erin K.
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