I know that for overlapping mesh, the layer with lower priority (=lower number) has precedence over mesh with the same LOD in a layer with a higher priority.I put my landclass as far as possible to scenerybasescenery (has a very low layer number), but what happens if I have scenery with landclass bgls in e.g. layer 50 (overlapping, i.e. landclass for the same area)? Which one takes precedence?Andreas

The landclass seems to work differently. I have mine in three levels in the scenery library. At the lowest level I keep the broader coverage, next up any specialised overlapping areas such as a particular state or region, then on top any edits I may do to those regions which may be based on local knowledge or texture preferences etc.Andy

Yup landclass works the complete oposite way...So with mesh:Same LOD - put the one you want to use *below* the one you want overridden.Different LOD - The most detailed one wil be usedLandclass:Since landclass is only available in one resolution...just put the one you want to use *above* any landclass you want overridden. Note that any landclass placed in the base scenery folder is placed below everything else including the aerial photos used for some of the detailed default airports.

Thank you a lot for that information.I'll move the custom landclass files out of scenerybasescenery to a much higher level (above all which come with FS9 by default), and place custom scenery (e.g. airports or such with their own landclass) above it.I wonder how others keep their scenery.cfg files in good shape. I don't think many think about such things, and this file is important for how FS9 looks...Andreas

Yes,I had FreeFlow NE above USA roads, and many of my major highways had become dirt roads. When I moved it below, everything was fine.Thomas

Does this mean that if I want to use a custom landclass, Matt Fox's California v2, for example, then I have to place it below the default aerial photo of Los Angeles? I have also noticed many add-ons require that the LC folder be placed above the scenery folder. A good example of this is Holger's Columbia River add-on. This could get really confusing on what general order to place your items. By that I mean what comes first, mesh, scenery, LC, a mixture, or all of the above? :)Brad

This effect of the FREEflow scenery is not related to landclass, however - it's the fact that the layers used for VTP scenery from both USAroads and FFNE are the same. Placing USAroads (and American Data roads for that matter) above FFNE solves the problem - thanks to Thomas for sorting that one out!To the point of the thread - land class can not be "layered" per se. Since land class is always defined for an entire LOD5, the actual area covered is always the same. What happens is that if only a small area is re-classed, the remaining area in the LOD5 is set as undefined. The undefined areas are essentially transparent. The statement that smaller LODs are on top is essentially correct, though class scenery can only be LOD13 tiles within an LOD5. The more LOD13's that are "painted" in a class scenery bgl, the lower it will appear to be layered. This is why FS's "global" land class is always the lowest layer - everything except another global class scenery will be smaller, thus layered above. To ensure a class scenery is on top, painting a single LOD13 will result in the highest layer, but you'll end up with 256 bgls to cover a single LOD5. Thus, I think that file size is a better measure of which class file is "on top" - the smallest being above the larger.I'm sure that's not clear.Please feel free to ask questions!Best,sg

I did some experiments and screenshots this weekend, here's the result:Landclass used: MyWorld2004 Ed. 2005 and all landclass available from FSFreeware's mapserver. The bgl files of both are in 2 separate scenery folders.Both enabled: MyWorld landclass has precedence, but FSFreeware landclass is partly merged.Both enabled with reverse order: MyWorld rules again, the mixture is a little different.I have much different results if only wither Myworld or FSFreeware landclasses are active alone.For some reason, the FSFreeware landclass has not so much importance, no matter at which layer it is; MyWorld landclass in most areas takes precedence, but there's a merge of MyWorld and FSFreeware landclass in certain areas; the result of this merge varies depending of the layer the landclass files are on.So, I'm not sure what causes MyWorld landclass to take over almost completely, and I cannot confirm that reversing the layers landclass is in changes much to the output I get, but I'm happy with what I have...Andreas