Thank you for your reply Luis. In this case I will put this project on standby. Thankfully it's in its early stage so it's not very painful. There is a huge number of lakes and it's no viable edit all of them by hand in Sbuilder. And, as I said before, Globalmapper is not an option for me due its pr...

Hello there I've started a new proyect with a high number of .shp's, but I have the next problem: When I import .shp from QGis, I use the option "altitude imported polys" from one of the fields. The problem is I always get the next error: "is not a double precision number and will ignored" In Qgis I...