<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hi,<div class=""><br class=""></div><div class="">I have a vector (`POINT`) which has two layers containing relevant attributes (’strata’ and ’stand’). I would like to concatenate the two values into a new attribute for Layer 1 (’<STRATA>_<STAND>’). I’ve been struggling to sort this out for too long and am tapping out. Its probably blatantly obvious but it has escaped me.</div><div class=""><br class=""></div><div class="">Thank you!</div><div class=""><br class=""></div><div class="">Here are some specifics.</div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">east, north: 651849.842735, 6604949.78485</div><div class="">c34_patch@project_area: </div><div class=""> Type: Point</div><div class=""> Id: 21622</div><div class=""> Layer: 1</div><div class=""> Category: 21623</div><div class=""> Driver: sqlite</div><div class=""> Database: /Users/pete/grassdata/PortGraham/project_area/sqlite/sqlite.db</div><div class=""> Table: c34_patch</div><div class=""> Key_column: cat</div><div class=""> Attributes: </div><div class=""> cat: 21623</div><div class=""> <b class="">strata: 3 — STRATA</b></div><div class="">c34_patch@project_area: </div><div class=""> Type: Point</div><div class=""> Id: 21622</div><div class=""> Layer: 2</div><div class=""> <b class="">Category: 10 — STAND</b></div></body></html>