In preparation of conducting the mathematical analyses of my mercurian craters, I have completed the GIS files of all 36 of these craters including the two or three that have less-than-optimal data files associated with them. All MDIS, MLA/USGS, and contour, rim, floor, and melt files exist for each cataloged crater.
All was going well until I attempted to begin performing statistical analyses on these completed craters, and the statistical functions in QGIS wouldn’t spit out any numbers — or anything for that matter. As it turned out, the floor and rim shapefiles I created first time around had the incorrect coordinate system attached to them; so, while the shapefiles were drawn properly over their respective craters the coordinate system still believed those shapefiles were far elsewhere with respect to the craters they were supposed to be related to. Thus, I had to redraw the floor and rim shapefiles for nearly all 36 of the craters according to the correct coordinate system.
With the GIS files in the proper coordinate system, it appears from my initial run of stat-analyses on Abedin crater that numbers are being spat out as expected — the “qProf” and “zonal statistics” tools differ in the mean, std-dev, etc…, values they spit out, compared to each other, however. “qProf”, used for the rim, uses the raw elevation values, while “zonal statistics”, used for the floor, subtracts those elevation values from the radius of Mercury before it goes ahead and calculates the statistical values. Regardless, I can now statistically analyze the craters and from there prepare the final two plots that will take a similar form to Figures 4 and 7 of Neish et al. (2017).