in simpledata.m: removing empty metadata; added missing optional argument to varargin method; added missing mask input to tx_masked method; no longer updating descriptor to simple algebraic operations; using correct tx method in plot
in simpledata.m: removing empty metadata; added missing optional argument to varargin method; added missing mask input to tx_masked method; no longer updating descriptor to simple algebraic operations; using correct tx method in plot

jgte/orb,jgte/orb,jgte/orb,jgte/orb,jgte/orb