[Kst] How to do a simple graph in kst
bgee at campercaver.net
Thu Nov 1 02:41:39 CET 2007
HELP!!! Can anyone here help me out? What am I missing?
I've been beating my head against every graphing program I can find trying get
one that will create a simple graph. So far I have not been able to figure
any of them out. They'll do complex stuff but not simple. Urgh!
The data I want to graph is from water level loggers. It is organized by date
and consists of a water depth, water temp and air temp taken every 15 minutes
over a period of about 8 months. It is all in a txt file. Here is a sample
of the first few lines of the file:
"Time","Water Temp","Water Depth","Cave Air Temp"
Sat Oct 28 10:45:00 2006,56.75,1.03,60.02
Sat Oct 28 11:00:00 2006,56.58,1.04,58.65
Sat Oct 28 11:15:00 2006,56.58,1.03,57.96
Sat Oct 28 11:30:00 2006,56.58,1.03,57.61
Sat Oct 28 11:45:00 2006,56.58,1.03,57.27
Sat Oct 28 12:00:00 2006,56.58,1.02,57.1
Sat Oct 28 12:15:00 2006,56.58,1.03,57.1
Sat Oct 28 12:30:00 2006,56.58,1.03,56.92
Sat Oct 28 12:45:00 2006,56.58,1.03,56.92
Sat Oct 28 13:00:00 2006,56.58,1.03,56.92
Sat Oct 28 13:15:00 2006,56.58,1.03,56.92
Sat Oct 28 13:30:00 2006,56.58,1.03,56.92
So here is what I am fighting:
1) How the heck do you get dates to become the X axis? I've tried every date
format I can think of, but all kst will do is either give me garbage or give
me what looks like about 10 seconds around midnight Jan 1 1969. If I use the
internally generated INDEX for the X-axis, kst will make a nice plot of the
data. Looking at dates that run from 0 to 22,000 is pretty useless, though.
2) How do you get multiple Y ranges? The water depth ranges between about 1
and 3 feet while the temperatures are in the 55-62 range. I want both on the
same plot with appropriate scaling.
3) I have other sets of data which do not exactly line up time-wise. Rainfall
events, for example ... Every .01 inch generates an event with a time stamp.
Is there a way to plot these events mixed in with the other data in
My clue buffer is in an underflow condition. Thanks for any help you can
More information about the Kst