<div dir="ltr">I guess the problem is about the brain phantom related file, range_atten-brain.dat as followed:<div>```</div><div><table class="gmail-highlight gmail-tab-size gmail-js-file-line-container" style="box-sizing:border-box;border-spacing:0px;border-collapse:collapse;color:rgb(36,41,46);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";font-size:14px"><tbody style="box-sizing:border-box"><tr style="box-sizing:border-box"><td id="gmail-LC1" class="gmail-blob-code gmail-blob-code-inner gmail-js-file-line" style="box-sizing:border-box;padding:0px 10px;line-height:20px;vertical-align:top;overflow:visible;font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;font-size:12px;white-space:pre">4</td></tr><tr style="box-sizing:border-box"><td id="gmail-L2" class="gmail-blob-num gmail-js-line-number" style="box-sizing:border-box;padding:0px 10px;width:50px;min-width:50px;font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,0.3);text-align:right;white-space:nowrap;vertical-align:top"></td><td id="gmail-LC2" class="gmail-blob-code gmail-blob-code-inner gmail-js-file-line" style="box-sizing:border-box;padding:0px 10px;line-height:20px;vertical-align:top;overflow:visible;font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;font-size:12px;white-space:pre">  0     0     Air         false 0.0  0.0  0.0  0.2</td></tr><tr style="box-sizing:border-box"><td id="gmail-L3" class="gmail-blob-num gmail-js-line-number" style="box-sizing:border-box;padding:0px 10px;width:50px;min-width:50px;font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,0.3);text-align:right;white-space:nowrap;vertical-align:top"></td><td id="gmail-LC3" class="gmail-blob-code gmail-blob-code-inner gmail-js-file-line" style="box-sizing:border-box;padding:0px 10px;line-height:20px;vertical-align:top;overflow:visible;font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;font-size:12px;white-space:pre">  4     4     Water       true 1.0  0.0  0.0  0.2</td></tr><tr style="box-sizing:border-box"><td id="gmail-L4" class="gmail-blob-num gmail-js-line-number" style="box-sizing:border-box;padding:0px 10px;width:50px;min-width:50px;font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,0.3);text-align:right;white-space:nowrap;vertical-align:top"></td><td id="gmail-LC4" class="gmail-blob-code gmail-blob-code-inner gmail-js-file-line" style="box-sizing:border-box;padding:0px 10px;line-height:20px;vertical-align:top;overflow:visible;font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;font-size:12px;white-space:pre">  5     5     Water       true 0.0  1.0  0.0  0.2</td></tr><tr style="box-sizing:border-box"><td id="gmail-L5" class="gmail-blob-num gmail-js-line-number" style="box-sizing:border-box;padding:0px 10px;width:50px;min-width:50px;font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,0.3);text-align:right;white-space:nowrap;vertical-align:top"></td><td id="gmail-LC5" class="gmail-blob-code gmail-blob-code-inner gmail-js-file-line" style="box-sizing:border-box;padding:0px 10px;line-height:20px;vertical-align:top;overflow:visible;font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;font-size:12px;white-space:pre">  14    15    Water       true 0.0  0.0  1.0  0.2
</td></tr></tbody></table>```</div><div>Is anyone familiar with this file? Can anybody explain it explicitly? Like what is the '0' before Air meaning?</div><div>Any response will be highly appreciated! Thank you!</div><div><br></div><div>Best,</div><div><br></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Apr 13, 2020 at 10:12 AM Xinjie Cao <<a href="mailto:xinjie.cao@stonybrook.edu">xinjie.cao@stonybrook.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr"><div dir="ltr">Dear all,<br><div><br></div><div>I am running a simulation with new geometry of our model, but the GATE always stucks with following problem:</div><div>```</div><div>List of initialized processes:<br>[Core-0] Initialization of geometry<br>GateMaterialDatabase.cc (l.131): GateMaterialDatabase: could not find the definition for material '0' in material files<br></div><div><br></div><div>```</div><div>I am not sure what is the problem with this error, but I have checked my macro many times without any definition for material '0'. Has anyone ever met this problem before? Any answer will be highly appreciated. Thank you!</div><div><br></div><div>Best,</div></div></div></div>
</blockquote></div>