Name: edge_products Purpose: From a vector of contiguous channel boundaries return the commonly used quantities for plotting and scaling. Category: GEN, SPECTRA Input: Edges -if 1d, contiguous channel boundaries, n+1 values for n channels if 2d, 2xn, [lo(i),hi(i)], etc., assumed contiguous for calculating edges_1 Output: Mean - arithmetic mean of boundaries Gmean - geometric mean width - absolute difference between upper and lower edges edges_2 - 2xn array of edges [lo(i), hi(i)], etc. edges_1 - array of n+1 edges of n contiguous channels Keyword Input EPSILON - If the absolute relative difference is less than epsilon then two numbers are considered to be equal and a new bin is not required under the contiguous requirement. If epsilon isn't passed but CONTIGOUS is set it attempts to construct an epsilon based on the average relative difference between adjacent bins, it takes that value and multiplies it by 1e-5 and limits that to 1e-6 CONTIGUOUS - force all edges to be contiguous, including edges_1 Mod. History: ras, 21-oct-93 8-dec-2001, richard.schwartz@gsfc.nasa.gov, added CONTIGUOUS added protection against degenerate entry of single value for edges, clearly edges_2 and width have no meaning, but are set to edges and 0.0 respectively 25-aug-2006, ras, added epsilon and default epsilon as test to differentiate real numbers. If the absolute relative difference is less than epsilon then two numbers are considered to be equal and a new bin is not required under the contiguous requirement