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Questions about gnuplot command fit by a newbee.

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Subject	Questions about gnuplot command fit by a newbee.
From	jnw@xs4all.nl
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Greetings,

I'm new to gnuplot, but I've read the documentation and searched thsi newsgroup,but I still have some questions.

The first one is: Now matter what I set FIT_LIMIT to (eg. 1.0e-14), in fit.log it always says "limit for stopping : 1e-05".  The gnuplot output to stderr correctly reports "limit for stopping : 1e-14". Is this a bug?

I'm using a linear fit, as in
  f(x) = m * x + b
  fit f(x) "<file>" using 1:4:(1) via m,b
The second question is: Is there a way to include the final values of m and b in the plot?

The x-axis is a date, as in
  set xdata time
  set timefmt "%Y-%m-%d"
  set xtics format "%d-%m"
The third question is: In what unit of time is the final value of m expressed; or how do I get the value per day from the final value of m given now?

Thanks for a great program, and for your time!

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Questions about gnuplot command fit by a newbee. jnw@xs4all.nl - 2014-04-27 07:04 -0700
  Re: Questions about gnuplot command fit by a newbee. Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2014-04-27 17:22 +0200
    Re: Questions about gnuplot command fit by a newbee. jnw@xs4all.nl - 2014-04-27 10:51 -0700

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