Hello all...related question here, I've been trying to figure this out alone but it's like hitting your head to a concrete wall.
I have build my drawing so that on surface layer I have all the surfaces...everything assigned to a different class...the class names follow the pattern surface-asphalt, surface-concrete paving, surface-gravel etc.
I made a worksheet where I listed all the surface materials and then calculated the areas for each surface, for example (=AREA((C='surface-asphalt'))
So far working well...but then I thought that there must be a way that I can list automatically the surfaces I have used in the drawing. I mean I don't always use asphalt and now that I've listed it in the worksheet that means that I have to hide the rows when I don't need it.
Anywayyyy... I tried to list the objects automatically but I can't get it to work. I used a database header and used the criteria List all objects whose Layer is surfaces. It works so far that it understands that there are 6 objects on the layer...but it doesn't give the names of the classes...
What am I doing wrong? or do I have to name the objects too somehow? Since they are already in classes can I use the classnames somehow?