Are there any use cases which are still not addressed? > > If the block_data_missing table were exported exactly as it is except > for the removal of the '|' characters and "set datafile missing '?'" > were specified in the gnuplot script this would enable gnuplot to plot > the red and green surfaces with the missing values. To see this try > executing the last code block (gnuplot_4) which plots the data which > is first "cleaned" by the shell command you suggested in a previous > post. This would also remove the need to have the :missing header > argument. > > Kind regards, > > Paul > -- Eric Schulte http://cs.unm.edu/~eschulte