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 GRAFirst f

This keyword specifies the density level for plotting the first (dotted) contour line. This contour will be plotted at $ \bar{\rho}$ + f$ \sigma$($ \rho$), where $ \bar{\rho}$ is the mean density of the section that is being plotted, and $ \sigma$($ \rho$) the corresponding rms deviation (again, not of the whole map but only of given section). To the best of my knowledge, GraphEnt will allow you to give f a negative value, thus allowing you to start contouring from below the mean density level (although I bet that you could crash either GraphEnt or PGPLOT by giving random values to this parameter). Default is 0.0 (ie, first contour at the mean density).



NMG, March 2000