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<div>Dear Junjie:</div><div><br class="webkit-block-placeholder"></div>I do not know whether the distribution contains a ready-to-use tool. At the very worse, it contains a routine for cubic spline interpolation that, although not commented, is rather self-explanatory. If you do not know what sline interpolation is, the wikipedia is your friend<div><br class="webkit-block-placeholder"></div><div><a href="http://en.wikipedia.org/wiki/Spline_%28mathematics%29">http://en.wikipedia.org/wiki/Spline_%28mathematics%29</a></div><div><br class="webkit-block-placeholder"></div><div>in case you do not have access to wikipedia, you can try mathworld:</div><div><br class="webkit-block-placeholder"></div><div><a href="http://mathworld.wolfram.com/Spline.html">http://mathworld.wolfram.com/Spline.html</a></div><div><br class="webkit-block-placeholder"></div><div>Stefano (another one!) B.</div><div><br><div><div>On Sep 24, 2007, at 5:39 AM, wangjunjie1981_0 wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div><br>Dear Stefano </div> <div> Thank you for your advice, i can understand your ideas.But i have a question how to achive the interpolation.Is it included in PWSCF program or generated by other special program? How can i have or find ? I hope your help again, Thank you very much I will give back to the community about the testing results.</div> <div> </div> <div> </div> <div>Best regards</div> <div>Junjie Wang</div><br><!-- footer --><br> <hr> <font style="font-size:12px;line-height:15px;">杀70万种木马病毒，</font><a style="font-size:12px;line-height:15px; color:blue; text-decoration:underline;" href="http://pro.163.com/event.ng/Type=click&FlightID=96648&AdID=98138&TargetID=635&Values=31,43,51,60,72,82,91,100,110,312,330,332,499,587,702,733,734&Redirect=http://adcn.doubleclick.net/clk;134682177;20226578;k%3Fhttp://www.rising.com.cn/2008/trial/index.htm">瑞星2008版免费</a><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; ">Pw_forum mailing list</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><a href="mailto:Pw_forum@pwscf.org">Pw_forum@pwscf.org</a></div><div style="margin-top: 0px; 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See:</span></span></span></span></span></span></span></span></span></font><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px;"><span class="Apple-style-span" style="font-size: 12px; "><span class="Apple-style-span" style="font-size: 12px; "><span class="Apple-style-span" style="font-size: 12px; "><span class="Apple-style-span" style="font-size: 12px; "><span class="Apple-style-span" style="font-size: 12px; "><span class="Apple-style-span" style="font-size: 12px; "><span class="Apple-style-span" style="font-size: 12px; "><span class="Apple-style-span" style="font-size: 12px; "> </span></span></span></span></span></span></span></span></span></font><a href="http://www.gnu.org/philosophy/no-word-attachments.html"><font class="Apple-style-span" color="#0023E9" size="3"><span class="Apple-style-span" style="font-size: 12px;; color: rgb(0, 35, 233); -khtml-text-decorations-in-effect: underline; "><span class="Apple-style-span" style="color: rgb(0, 35, 233); font-size: 12px; -khtml-text-decorations-in-effect: underline; "><span class="Apple-style-span" style="color: rgb(0, 35, 233); font-size: 12px; -khtml-text-decorations-in-effect: underline; "><span class="Apple-style-span" style="color: rgb(0, 35, 233); font-size: 12px; -khtml-text-decorations-in-effect: underline; "><span class="Apple-style-span" style="color: rgb(0, 35, 233); font-size: 12px; -khtml-text-decorations-in-effect: underline; "><span class="Apple-style-span" style="color: rgb(0, 35, 233); font-size: 12px; -khtml-text-decorations-in-effect: underline; "><span class="Apple-style-span" style="color: rgb(0, 35, 233); font-size: 12px; -khtml-text-decorations-in-effect: underline; "><span class="Apple-style-span" style="color: rgb(0, 35, 233); font-size: 12px; -khtml-text-decorations-in-effect: underline; "><span class="Apple-style-span" style="color: rgb(0, 35, 233); font-size: 12px; -khtml-text-decorations-in-effect: underline; ">http://www.gnu.org/philosophy/no-word-attachments.html</span></span></span></span></span></span></span></span></span></font></a></div><div><br class="khtml-block-placeholder"></div><br class="Apple-interchange-newline"></span></span></span></span></span></span></span></span></span> </div><br></div></body></html>