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I find that in many cases, the plotted variable does reach very small values, which are of no significance or interest, but Autorange accommodates them, as it should, having no 'knowledge' of which values are significant. The same occasionally applies to initial very large values, such as inrush current.

“If I immediately right-click in the plot pane and select "Autorange Y-axis", it usually fixes that problem”

Begging the question of why that *颈蝉苍’迟* the Automatic default!

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From: [email protected] <[email protected]> On Behalf Of Andy I via groups.io
Sent: Friday, May 02, 2025 10:51 AM
To: [email protected]
Subject: EXTERNAL: Re: [LTspice] Vin vs. Load - YX logarithmic plot

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On Fri, May 2, 2025 at 10:30 AM, <rick_church@...> wrote:

The plot window will give you the chance to scale the axes logarithmically.? ...

I want to add this note:? Usually when I change the Y-axis from linear to log, LTspice scales the Y-axis so that it?covers too much range (too many decades), making it a less useful plot.? If I immediately right-click in the plot pane and select "Autorange Y-axis", it usually fixes that problem.

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If the Y-axis waveform includes negative values, then it might still be scaled with too much range to be helpful.? In that case, right-click on the Y-axis and set a new value for the Bottom, so that the displayed plot does not cover so wide a range.

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Andy

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