[GRASS-git] [OSGeo/grass] c3405b: wxGUI/tplot: add option to show simple regression ...

[Tomas Zigo]

  Branch: refs/heads/master
  Home:   https://github.com/OSGeo/grass
  Commit: c3405bb1fd6fe717eef0eacbee7665c4b1a5f048
      https://github.com/OSGeo/grass/commit/c3405bb1fd6fe717eef0eacbee7665c4b1a5f048
  Author: Tomas Zigo <50632337+tmszi at users.noreply.github.com>
  Date:   2020-12-24 (Thu, 24 Dec 2020)

  Changed paths:
    M gui/wxpython/tplot/frame.py
    M gui/wxpython/tplot/g.gui.tplot.html
    M gui/wxpython/tplot/g.gui.tplot.py

  Log Message:
  -----------
  wxGUI/tplot: add option to show simple regression model line (#1207)

* add option to show simple regression model line (calculate simple regression model, print calculated formula y = a + b*x, and r-squared parameter)
* explain conversion x axis date time string format to number (referenced date) with export data to CSV file and its effect on the calculation (in different software)
* increase the number of decimal places from 4 to 5 for the calculated simple regression model formula