<div dir="ltr"><div class="gmail_extra"><div class="gmail_extra">Dear Elaine,</div><div class="gmail_extra"><br></div><div class="gmail_extra">Thanks for your answer.</div><div class="gmail_extra"><br></div><div class="gmail_extra">1) I turned on &quot;Report value at mouse position&quot; in Surface Color (Electrostatic Surface Coloring) tool.</div><div class="gmail_extra"><br></div><div class="gmail_extra">After, I clicked Color to apply the coloring, the value-reporting works fine for me, giving the potential</div><div class="gmail_extra">value and the XYZ coordinates of the surface point in the status line at the bottom of the Chimera window.</div><div class="gmail_extra"><br></div><div class="gmail_extra">I used this scripts from the following tutorial:</div><div class="gmail_extra"><br></div><div class="gmail_extra"><a href="http://www.cgl.ucsf.edu/chimera/videodoc/SurfaceValues/index.html">http://www.cgl.ucsf.edu/chimera/videodoc/SurfaceValues/index.html</a></div><div class="gmail_extra"><br></div><div class="gmail_extra">Please note to the time 3:20 in this video in which there is following line</div><div class="gmail_extra">in the status line at the bottom of the Chimera window.</div><div class="gmail_extra"><br></div><div class="gmail_extra">*.dx value at surface point = 0.78023.</div><div class="gmail_extra"><br></div><div class="gmail_extra">What is the reason of this state? How to have value at surface point</div><div class="gmail_extra">instead of XYZ coordinates of the surface point.</div><div class="gmail_extra"><br></div><div class="gmail_extra">2) Please answer my first question in mailing list:</div><div class="gmail_extra"><br></div><div class="gmail_extra">I did following steps to obtain ¬†Electrostatic Potential based on ¬†Poisson-Boltzmann using APBS:</div><div class="gmail_extra"><br></div><div class="gmail_extra">open... pr.pdb</div><div class="gmail_extra">action... surface... show</div><div class="gmail_extra">to obtain *.dx file, I typed APBS in command line, after minutes, *.dx file was created and</div><div class="gmail_extra">surface color window was opened, I pressed color tab.</div><div class="gmail_extra"><br></div><div class="gmail_extra">Please see the figure in following link:</div><div class="gmail_extra"><a href="https://www.dropbox.com/s/99gjecypqu910hu/apbs.png?dl=0">https://www.dropbox.com/s/99gjecypqu910hu/apbs.png?dl=0</a></div><div class="gmail_extra"><br></div><div class="gmail_extra">Why are the colors black and white in the surface, instead of blue and red?</div><div><br></div></div></div>