<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body ><div><p class="MsoNormal" style="margin-top: 0cm; margin-right: 0cm; margin-left: 0cm; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><span class="Apple-style-span" style="font-family: sans-serif; font-size: medium; ">Good morning, </span></p><p class="MsoNormal" style="margin-top: 0cm; margin-right: 0cm; margin-left: 0cm; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><span class="Apple-style-span" style="font-family: sans-serif; font-size: medium; "><br></span></p><p class="MsoNormal" style="margin-top: 0cm; margin-right: 0cm; margin-left: 0cm; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><span class="Apple-style-span" style="font-family: sans-serif; font-size: medium; ">I am a new user of Paraview and I am requesting your support regarding volume rendering.</span></p><p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p><p class="MsoNormal"><span lang="EN-US">I have a set of data included in a CSV file. The data looks like:<o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US"> X Y Z C (Value to be represented)<o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US">The C value typically represents particle concentration.<o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p><p class="MsoNormal"><span lang="EN-US">My ultimate goal would be to display a volume with color and opacity being directly linked to C (particle concentration).<o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p><p class="MsoNormal"><span lang="EN-US">I managed to import my data in ParaView and then used the “Tetrahedralize” filter to get an unstructured Grid.<o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US">I am able to display my points (using “Points” representation) such that the color of each point depends on its C value. However, changing representation to “Volume” just lead to nothing being displayed.<o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US">Obviously I am missing something. Do you have an idea about how to get my volume?<o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p><p class="MsoNormal"><span lang="EN-US">Thank you in advance for your help.<o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p><p class="MsoNormal"><span lang="EN-US">Géraud Vaurs</span></p></div></body></html>