[time-nuts] web presentation of data
Hal Murray
hmurray at megapathdsl.net
Tue Aug 7 18:06:11 UTC 2012
albertson.chris at gmail.com said:
> So the web server is inside an Arduino? Yes can't run GNUplot there. Why
> not have the Arduino produce either Postscript or PDF? It is very easy to
> draw a graph in Postscript.
That's a very good suggestion.
I think the key idea is that the programmer is making some high level
decisions that greatly simplify making the graph. Once you do that, you
don't need a complicated graphing program like gnuplot. An Arduino is smart
enough to do simple things like scaling once you have the environment setup.
Now that you remind me, I actually did that 20+ years ago. I'll fish out the
details if anybody wants to go down that rathole. The old/early Postscript
books are very good.
We were collecting loadcell data. A Mac-SE is probably about as smart as an
Arduino. Each data file had a few header lines then a bunch of numbers. To
print things, I just cat-ed a postscript program with one or more data files
and sent it to the printer. The postscript code was smart enough to read and
process the data files.
--
These are my opinions. I hate spam.
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