<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi Fred,<div><span class="Apple-tab-span" style="white-space:pre"> </span>I've committed a change to both the daily build and the 1.6 release candidate that will cause the "sel" command to treat your old selectors as wanting to do atom selection rather than model activation (namely, if the argument to the "sel" commands contains any characters that are illegal in the model-activation mode [anything but dash, comma, period or digits] then it will try to do atom selection).</div><div><br><div><div>On Jan 31, 2012, at 1:34 PM, frederick lee wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>hi elaine,<br>thanks for the quick help. i tried using aliases just now.<br>now i have 4 aliases: g0a, g0b, g1a, g1b.<br><br>i can only sel all 4 groups by using<br><blockquote type="cite">sel g0a | g0b | g1a | g1b<br></blockquote><br>the & operator returns nothing as there are<br>no intersection among the 4 groups.<br></div></blockquote><div><br></div>Right. You said "and" in your original mail and in English that can be ambiguous whether that corresponds to "and" or "or" in boolean logic. As you figured out, you actually wanted the boolean or ("|").</div><div><br><blockquote type="cite"><div>seemed the & is intersection and not plus here.<br>when i used<br><blockquote type="cite">sel g0a,g0b,g1a,g1b<br></blockquote>i got error.<br><br>given above, seemed like i need to do something like<br><blockquote type="cite">sel (g0a | g0b | g1a | g1b) & without CA/C1'<br></blockquote>but parentheses are not legal here. how should i get<br>around this? thanks again.</div></blockquote><br></div><div>For a complication selection like this it's probably easiest to do it in two steps:</div><div><br></div><div>sel g0a | g0b | g1a | g1b ; sel sel & without CA/C1'</div><div><br></div><div>--Eric</div></div><br><div apple-content-edited="true"> <span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 16px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><p style="margin: 0.0px 0.0px 0.0px 0.0px"><font face="Helvetica" size="5" style="font: 16.0px Helvetica"><span class="Apple-converted-space"> <span class="Apple-converted-space"> </span></span>Eric Pettersen</font></p><p style="margin: 0.0px 0.0px 0.0px 0.0px"><font face="Helvetica" size="5" style="font: 16.0px Helvetica"><span class="Apple-converted-space"> <span class="Apple-converted-space"> </span></span>UCSF Computer Graphics Lab</font></p><p style="margin: 0.0px 0.0px 0.0px 0.0px"><font face="Helvetica" size="5" style="font: 16.0px Helvetica"><span class="Apple-converted-space"> </span><a href="http://www.cgl.ucsf.edu">http://www.cgl.ucsf.edu</a></font></p><br class="Apple-interchange-newline"></div></span> </div><br></body></html>