Good Evening,
I think there was a little sun this week; it did not last long.
Mostly fog and more fog with light to heavy rain. The bracken fern are
turning bronze, many leaves are falling. We are in the rainy season.
The sun awoke from a short nap. Two or three X class flares from a
new sunspot group. Large and active spots are appearing in a chain.
Solar flux is up too. A 'mild' CME hit the Earth but more, bigger ones
are on the way. Should be noisy tomorrow. More autumn thunderstorms
with a steady hiss from the sun. QSB should be up too.
Please join us on (or near):
14050 kHz at 2200z Sunday (3 PM PDT Sunday)
7047 kHz at 0000z Monday (5 PM PDT Sunday)
73,
Kevin. KD5ONS
Reminder: next week some of the US changes their clocks. We will do the
same.
-
If I need to graph a data file I use gnuplot. It is a light, command
line tool, which runs from scripts. This is the script I have been
using a lot lately:
plot 'dt.dat' using 1:4 title 'Carnivore' with line, 'dt.dat' using 1:3
title 'Herbivore' with line, 'dt.dat' using 1:2 title 'Plant' with line
But this is fancy. The default settings can work just fine. plot
'dt.dat' using 1:4 is enough.
plot reads the dt.dat file and displays whatever is in column 1 as the X
coordinate, and column 4 data as the Y coordinate. Stringing commands
together, with commas in between, gives me a three value chart. If you
don't specify line you get the default icons at each data point. Kind
of yucky for what I am doing. The other bit is title 'Carnivore' to
label the chart's legend.
http://gnuplot.info/ For more information, downloads, descriptions, and
demos. I have used it for twenty years if I am not mistaken. It has
been well maintained over that time.
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