Looking to make a context model for the bay area (San Francisco)
Looking to get it as high quality as possible over a very large area so wondering what the best method would be for this.
Ive tried to use the Rest Raster workflow but im getting some funky gaps in the tiling which would be ideal to avoid. the quality that im getting is pretty good for a large context model but would be awesome to see how high it could go.
Also tried to use slippy but i think the area is too large and when i tried to input multiple boundaries at zoom level 19 it failed for all but one boundary curve.
BTW LOVING this plugin, way better than searching on nasa for the SRTM, but if anyone could help out that would be awesome. Attached is some images of what ive been able to achieve and where the errors are occuring.
@eve3 ,
Have you tried using the USGS 3DEP sources from the RESTTopo component? Also, what resolution topo are you hoping to achieve? 10m per pixel? Is this just for visualization? Is there are area of interest that could be zoom level 19 instead of the entire bay area? Before diving in, it would be good to know a little more about the intent.
Hey brian thanks for the quick reply!
The Topo and raster are just for visualization purposes. I haven’t been using the slippy raster component but was using the rest raster component instead so there was no zoom option, just a standard resolution input which i had set at 7000. Ideally we need just a small chunk close to the site at a high resolution (zoom 19) if using slippy. That location is the piers south of the bay bridge.
I hadn’t tried the USGS 3DEP source, but can give that a try, Overall the topo resolution seems great for what we need.
The output i have right now seems to be a good resolution overall for everything else, but because im inputting multiple boundaries to get the higher resolution of the raster, it seems like there may be a rounding error that is causing boundaries to not match up with each other.
@Brian_Washburn I was able to fix the seams with the USGS 3DEP topo thanks for the suggestion, but yeah if any advice on how to tile or on how best to get the raster stuff (slippy or RESTraster) would be great thanks so much
Hi @eve3 ,
I typically build up surrounding topography with nested boundaries, one at the scale of the “site”, one at the scale of the “neighborhood” and one at the scale of the “region”. Using the USGS 3DEP Bare Earth DEM High setting for the RESTTopo component with these curves get enough resolution for my needs. I then cull out the faces of the mesh from an outer boundary with one from the inner boundary so there aren’t overlapping topo meshes. You can then use the SlippyRaster component to get aerial imagery at the desired zoom level for mapping on the resulting meshes.
