<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hello,<div class=""><br class=""></div><div class="">I have been looking at the population structure of whitefish in a small lake area. I used xvalDapc to determine the optimal number of PCs to retain for the dapc analysis. When I look at the output from this xval command I see that the following:</div><div class=""><br class=""></div><div class=""><div class="">$`Median and Confidence Interval for Random Chance`</div><div class=""> 2.5% 50% 97.5% </div><div class="">0.08354526 0.12267036 0.17258877 </div><div class=""><br class=""></div><div class="">$`Mean Successful Assignment by Number of PCs of PCA`</div><div class=""> 20 40 60 80 100 120 140 160 180 </div><div class="">0.1319444 0.1694444 0.1680556 0.1875000 0.2013889 0.1291667 0.1666667 0.1250000 0.1125000 </div><div class=""><br class=""></div><div class="">$`Number of PCs Achieving Highest Mean Success`</div><div class="">[1] "100"</div><div class=""><br class=""></div><div class="">$`Root Mean Squared Error by Number of PCs of PCA`</div><div class=""> 20 40 60 80 100 120 140 160 180 </div><div class="">0.8704578 0.8361065 0.8360719 0.8177360 0.8051124 0.8730468 0.8389395 0.8772458 0.8905042 </div><div class=""><br class=""></div><div class="">$`Number of PCs Achieving Lowest MSE`</div><div class="">[1] "100"</div></div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">From this I have interpreted that I should use 100 PCs. From there when I run the dapc with 100 PCs and then look at output from summary(dapc) I have an assignment probability of 0.8701923. Where I am confused is how to interpret the “Mean Successful Assignment†from the above output. Does this also correspond to the assignment to populations? If so, is it more accurate to assume that the assignment probability is 0.2013889?</div><div class=""><br class=""></div><div class="">Thanks,</div><br class=""><br class=""><div class="">
<div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class=""><span style="text-align: -webkit-auto;" class="">Carly Graham</span></div><div class="">PhD Candidate</div><div class="">University of Regina</div><div class=""><br class=""></div></div><br class="Apple-interchange-newline"></div><br class="Apple-interchange-newline"><br class="Apple-interchange-newline">
</div>
<br class=""></body></html>