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 24 Jun 2021, Konstantin Olchanski, Bug Fix, changes in history plots 24 Jun 2021, Stefan Ritt, Bug Fix, changes in history plots 25 Jun 2021, Marco Francesconi, Bug Fix, changes in history plots 25 Jun 2021, Konstantin Olchanski, Bug Fix, changes in history plots 25 Jun 2021, Konstantin Olchanski, Bug Fix, changes in history plots 25 Jun 2021, Konstantin Olchanski, Bug Fix, changes in history plots 25 Jun 2021, Stefan Ritt, Bug Fix, changes in history plots 25 Jun 2021, Konstantin Olchanski, Bug Fix, changes in history plots 30 Jun 2021, Konstantin Olchanski, Bug Fix, changes in history plots 14 Jul 2021, Konstantin Olchanski, Bug Fix, changes in history plots 14 Jul 2021, Konstantin Olchanski, Bug Fix, changes in history plots 24 Aug 2021, Stefan Ritt, Bug Fix, changes in history plots
Message ID: 2265     Entry time: 14 Jul 2021     In reply to: 2253     Reply to this: 2266
 Author: Konstantin Olchanski Topic: Bug Fix Subject: changes in history plots
```Moving in the direction of this proposal. History plot editor is updated according to it. Remaining missing piece is the "show
raw value" buttons and code behind them.

Changes:

- "show factor and offset" moved to the top of the page, "off" by default
- factor and offset (if not zero) are automatically migrated to the formula field (if it is empty), one needs to save the panel
for this to take effect.

K.O.

> > I am updating the history plots.
> > So the idea is to use this computation:
> > y_position_on_plot = offset + factor*(formula(history_value) - voffset)
>
> Stefan and myself did some brain storming on zoom. Writing it down the way I remember it.
>
> - we distilled the gist of the problem - the numerical values we show in the plot labels and in hover-over-the-graph
> are before formula is applied or after the formula is applied?
>
> - I suggested a universal solution using a double formula: use formula1 for one case;
>   use formula2 for the other case;
>   use formula1 for "physics calibration", use formula2 for factor and offset for composite plots:
>      numeric_value = formula1(history_value)
>      plotted_value = formula2(numeric_value)
>
> - we agree that this is way too complicated, difficult to explain and difficult to coherently present in the history editor
>
> - Stefan suggested a simple solution, a checkbox labeled "show raw value" next to each history variable. by default, the
> value after the formula is plotted and displayed. if checked, the raw value (before the formula) is displayed, and the
> value after the formula is plotted. (so this works the same as the factor and offset on the old history plots).
>
> - if "show raw value" is enabled, the numerical values shown will be inconsistent against the labels on the vertical axis.
> Our solution it to turn the axis labels off. (for composite plots, like oscillator frequency in Hz vs oscillator
> temperature in degC, both scaled to see their correlation, the vertical axis is unit-less "arbitrary units", of course)
>
> - to simplify migration of old history plots that use custom factor and offset settings, we think in the direction of
> automatically moving them to the "formula". (factor=2, offset=10 automatically populates formula with "2*x+10", "show raw
> value" checked/enabled). Thus we can avoid implementing factor and offset in the new history code (an unwelcome
> complication).
>
> - I think this covers all the use cases I have seen in the past, so we will move in this direction.
>
> K.O.```
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