I am a Surfer user since its DOS versions. A long time ago I used the ALTERSYM.EXE (1989) program from Golden Software, to create an improved CENTERED.SYM set of symbols. I wanted a set of arrows that would have their foot in the center point of the symbol cell instead of being centered in the symbol cell. Since I work with hydrodynamics, quite often it is convenient to plot a field of flow velocity vectors with their feet at the computing nodes instead of centered at the nodes. This is great to compare vector fields!
For that I've used the ALTERSYM.EXE program to create a bunch of extra arrow symbols. None of the original CENTERED.SYM symbols has been altered. Since then, at least from the Surfer 7 era, I always substitute the standard installed version of the CENTERED.SYM set with my improved version. I´ve done that in Surfer 14 as well.
I would be happy to give this improved CENTERED.SYM file to all users of Surfer. Perhaps Golden Software could analyze the improved set and adopt it. It is free! Just tell me to whom could I send the file.
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