Re: [R] accumulation curves

Hi Kyran, Please reply via the list - you'll get more answers that way :) My example had the data in vectors, you are using a data.frame. Try replacing the relevant bits of your code (below) with these lines and see if that helps... rich.lm ~ lm(Chao1 ~ log(N.obs), data=table1) smooth.effort <-

Re: [R] accumulation curves

OK, assuming a trend in estimated spp richness vs log(effort) you could do this... plot(effort, richness) rich.lm <- lm( richness ~ log(effort) ) smooth.effort <- seq(1, 10, 0.1) # or whatever is appropriate lines( smooth.effort, predict(rich.lm, newdata=list(effort=smooth.effort)), col="red" )

Re: [R] accumulation curves

Hello Kyran, Some more details of your data would be helpful. For example, is it cumulative species count over time ? Michael On 23 September 2010 15:05, Kyran Staunton wrote: > Hi, > > I am trying to fit a logarithmic trendline to a scatterplot of a > species accumulation curve. I've tried abl

[R] accumulation curves

Hi, I am trying to fit a logarithmic trendline to a scatterplot of a species accumulation curve. I've tried abline, lines, curve and scatter.smooth but none of these work. Can anyone help please, Kyran __ R-help@r-project.org mailing list https://stat