Rendering a rock shelter for archaeology - how to?
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11-04-2011 06:52 PM
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by
Sure!
Here's a photo I found online of a similar rock shelter. This one is in New Jersey, I'm in Colorado.
The one we're working on was inhabited long ago by early Indians. There are all kinds of artifacts in the area - flakes indicating tool manufacturing, points, cores, etc. As such, we've done excavation under the overhang. My problem is in showing the excavation - in the ground - under the overhang. The "Z" data gets confused.
I have regular access to the site, and I can easily figure out which points are on the surface, which are on the interior roof, and which are on the overhead surface - it would be no problem to add another column to the attribute table for this.
But - then what? Is it possible to do a - for lack of a better term - negative contour?
Here's a photo I found online of a similar rock shelter. This one is in New Jersey, I'm in Colorado.
The one we're working on was inhabited long ago by early Indians. There are all kinds of artifacts in the area - flakes indicating tool manufacturing, points, cores, etc. As such, we've done excavation under the overhang. My problem is in showing the excavation - in the ground - under the overhang. The "Z" data gets confused.
I have regular access to the site, and I can easily figure out which points are on the surface, which are on the interior roof, and which are on the overhead surface - it would be no problem to add another column to the attribute table for this.
But - then what? Is it possible to do a - for lack of a better term - negative contour?
by
Here, maybe this will help. I've made a quick diagram using MSPaint. (Don't laugh, it works...)
This is a sketched cross-section of the rock shelter. I have data points I surveyed - they have x, y, and z data. (Figure 1.)
When I try to make them into a TIN - "TIN Management - Create TIN" - it takes the points and creates triangles using the most logical method, resulting in a surface like figure 2.
I need it to create a surface like figure 3. But is that "reverse contour" even possible?
This is a sketched cross-section of the rock shelter. I have data points I surveyed - they have x, y, and z data. (Figure 1.)
When I try to make them into a TIN - "TIN Management - Create TIN" - it takes the points and creates triangles using the most logical method, resulting in a surface like figure 2.
I need it to create a surface like figure 3. But is that "reverse contour" even possible?
