More followup ...
Made fifty individual graphs out of 800+ rows & a dozen columns of data from
the
raw access files in a few hours ...now plodding through the task of resizing
the
bitmaps to ready them for prime time as medium-sized JPG's and thumbnails
(Gimp).
Had all fifty graphs and the original PSI-Plot spreadsheet open at once
without
a hint of any memory crunch. It was the conversion from the LibreOffice Calc
spreadsheet to the PSI-Plot equivalent that ran into the out of memory error.
The graphs are all vector plots of GPS data showing signal paths .. all from
April.
George Langford