Code and log results are best copied from the Log or editor and pasted as text into a code box opened on the forum with the {I} or "running man" icon. Pictures are right out as it is very hard to copy and highlight or make changes to code. Code from a word processor program often ends up with characters that are not actually valid in code.     Without any actual description of the "method" it is impossible to tell if you have implemented in correctly. Without example data and documentation it is impossible to tell if your data meets any assumptions of the process. One suspects this may be the case with zero counts. ... View more