<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; ">Hi Virginia,<DIV><SPAN class="Apple-tab-span" style="white-space:pre"> </SPAN>Perhaps you could describe what your ultimate goal here is -- there may be an easier way to achieve it than by constructing a custom selector.</DIV><DIV><SPAN class="Apple-tab-span" style="white-space:pre"> </SPAN>But in regards to your problem, for the purposes of selector construction the "Existing Selection" isn't what is selected at that instant -- it's what's selected at the time the selector is invoked from Chimera's Select menu. This allows you to build selectors that intersect the peptide backbone with the current selection for example.</DIV><DIV><SPAN class="Apple-tab-span" style="white-space:pre"> </SPAN>If you want to make a selector that simply holds what's currently selected, use the Name Selection... entry in Chimera's Select menu. That creates a selector under Named Selections in the Select menu, and will also be remembered in saved sessions.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>--Eric<BR><DIV> <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>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>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="mailto:pett@cgl.ucsf.edu">pett@cgl.ucsf.edu</A></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><BR><DIV><DIV>On Oct 25, 2007, at 2:22 PM, Virginia Pett wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite"> <FONT face="Verdana, Helvetica, Arial"><SPAN style="font-size:12.0px">Hello,<BR> There is a difficulty with the Selector Construction Panel. I make a selection in the main window, such as chain A or atom @NZ. The Inspect Selection panel shows that I have made a selection. Then in the Selector Construction Panel: Workbench, Load from current. The Status panel shows workbench content: Existing Selection. Then Workbench, Save, as chain A, for example. However, when I go back to the main window, Select, Clear Selection and then Select, chain A, there is nothing selected.<BR> <BR> I downloaded the latest version of Chimera for Mac OS X a few days ago (chimera-1.2422-osx_x11.dmg). I’m running it on a PowerBook G4 with Mac OS X (10.4.10).<BR> Virginia<BR> _____________________________________________________ <BR> <BR> Virginia B. Pett<BR> Professor of Chemistry<BR> Department of Chemistry, The College of Wooster<BR> 943 College Mall, Wooster, OH 44691<BR> Telephone: 330-263-2114<BR> Fax: 330-263-2386<BR> <BR> </SPAN></FONT><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">_______________________________________________</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Chimera-users mailing list</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><A href="mailto:Chimera-users@cgl.ucsf.edu">Chimera-users@cgl.ucsf.edu</A></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><A href="http://www.cgl.ucsf.edu/mailman/listinfo/chimera-users">http://www.cgl.ucsf.edu/mailman/listinfo/chimera-users</A></DIV> </BLOCKQUOTE></DIV><BR></DIV></BODY></HTML>