Thousandths separators

Mike Johnson — Wed, 28 Feb 2024 08:46:40 -0000

I have been using gnuplot to look at the performance of some very high precision voltage measurements. At the level of precision I am talking about, I need to plot data and derive statistics info from numbers with up to eight digits after the decimal point.
In the same way as very large numbers become difficult to read without thousands separators, high precision numbers are much harder to read without being able to add thousandths separators. I have attached an example plot.
From what I can see, neither gprintf or sprintf support the use of thousandths separators.
Is there any way I can hook my own script or even C code into gnuplot's formatting functions to achieve this?

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Thousandths separators