This week introduced us to the use of ArcScene for creating and displaying archaeological data. We were given a study area and shovel test data; from this we created three-dimensional layouts showing shovel test depth as well as the relative depths of three soil strata. We went further by creating interpolated surfaces from the shovel test data depicting the surfaces of each stratum (above). These surfaces gave us a better idea of the trajectory of the strata than the shovel tests alone. However, to make the differences in depth stand out, we used a high vertical exaggeration value.
An additional task for grad students was to create another three-dimensional scene with a cross-section of strata depth data derived from the interpolated raster surfaces. For both layouts, I went with textual scale information rather than a visual scale due to the distortion of the 3D image as well as the vertical exaggeration.
We were also introduced to the Fly tool of ArcScene. Below is a recording of a fly-through of the shovel test data. While I can imagine the Fly tool would not be something used on every project, it does allow the user to view data from different perspectives; recording a fly-through gives others the opportunity for multiple perspectives as well.
While not part of the assignment, a note in the lab instructions briefly described how to incorporate elevation data into ArcScene. Although I did not have much time to experiment, I was able to successfully incorporate elevation data from a DEM (downloaded from USGS.gov) into our shovel test data and create interpolated surfaces. For this image I set the vertical exaggeration to 10 rather than 20.
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