<div dir="ltr"><div dir="ltr">Is there anyway for PostGIS to make use of external functions such as FME <h1 class="gmail-fmx" style="box-sizing:border-box;font-size:32px;margin:1px;border-bottom:1px solid rgb(192,192,192);padding-bottom:3px;font-family:"Open Sans","Source Sans Pro",Arial,Verdana,"Microsoft Sans Serif";line-height:44px;color:rgb(0,0,0)"><span style="box-sizing:border-box">StreamOrderCalculator?</span></h1><div><span style="box-sizing:border-box"><br></span></div><div><span style="box-sizing:border-box">Regards,</span></div><div><span style="box-sizing:border-box"><br></span></div><div><span style="box-sizing:border-box">David</span></div></div></div>