I was able to answer a few of my question on my own. The units for the Y-axis can be set to days with the following:
/fpt(fit1, seq(length=5), units="days") / This sets the y-axis units to 'days', defines the number of radii (5), and removes the scaling function that wasn't really necessary for my work. This code creates the same graphical output as Fig. 3, but includes data for all 5 radii. /q<-fpt(fit1, seq(length=5), units="days") plot(q, scale=5) q/ [[1]] r1 r2 r3 r4 r5 1 NA NA NA NA NA 2 0.93059793 1.8611959 2.7917938 3.2376702 3.5896499 3 0.67953065 1.3590613 2.0385919 3.0999968 4.2353756 4 0.06163299 0.1232660 0.1848990 0.2465320 0.3081650 5 0.29740059 0.5948012 0.8922018 1.1896024 1.4870029 6 0.37765181 0.7553036 1.1329554 1.5106072 1.8882590 7 0.15249607 0.3049921 0.4574882 0.6099843 0.7624803 8 0.41124037 0.8224807 1.2337211 1.6449615 2.0562018 9 0.69655056 1.3931011 2.0896517 2.7862022 3.4827528 10 1.23742436 2.4748487 3.2033270 3.7745322 4.3457374 11 1.09054333 2.1810867 3.3980111 4.6539895 5.3108066 12 0.76754471 1.5350894 2.3026341 3.0701788 3.8377235 13 0.78835903 1.5767181 2.3650771 3.1534361 3.9417951 14 0.23311856 0.4662371 0.6993557 0.9324742 1.1655928 15 0.06427280 0.1285456 0.1928184 0.2570912 0.3213640 16 2.68054024 3.3610805 4.0416207 NA NA 17 2.68054024 3.3610805 4.0416207 NA NA 18 NA NA NA NA NA I'd still like to know how I can set radii as a function of distance. -- View this message in context: http://r.789695.n4.nabble.com/Trouble-with-first-passage-time-analysis-using-adehabitatLT-tp4647675p4647704.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.