I've just recently learned how to use formulas to get LTspice to plot all sorts of fun stuff, but sometimes the formula that's required is totally unclear as a label.

Here's an example; I just created this sim a few minutes ago, and I included the expression "V(v-load)/I(R-load)" to get it to plot the resistance of "R-Load." This works perfectly, but the formula looks silly. I'd love to be able to rename the resulting trace as "R(R-load)" or some such thing. Does LTspice support anything like that? I've tried a bunch of google searches to no avail. Lots of info on plotting formulas, nothing on renaming the results.

 

Don't think you can rename the labels as they define the trace operation.
What I do is use the Place Text command under the Plot Settings/Notes & Annotations drop-down to add text to the plot, such as placing "R-Load =" in front of the trace label so it ends up as
R-Load = V(v-load)/I(R-Load).
Still a little kludgy, but at least it better defines what the trace is plotting.

The main disadvantage of this is that the text is not anchored to the label, so it can move out of position if you change the plot plane and then you have to move it back into the desired location.

 

Don't think you can rename the labels as they define the trace operation.
What I do is use the Place Text command under the Plot Settings/Notes & Annotations drop-down to add text to the plot, such as placing "R-Load =" in front of the trace label so it ends up as
R-Load = V(v-load)/I(R-Load).
Still a little kludgy, but at least it better defines what the trace is plotting.

The main disadvantage of this is that the text is not anchored to the label, so it can move out of position if you change the plot plane and then you have to move it back into the desired location.

Thanks!

That's certainly not as slick and integrated as I'd hoped, but it gives me a way to get it done.

 

If you edit the Plot Defs file from the Plot Settings menu you can define the R(load) function there, then save the file. The function can then be used in place of Time on the X-axis. I haven't found a way to use the function on the Y-axis.

 

If you edit the Plot Defs file from the Plot Settings menu you can define the R(load) function there, then save the file. The function can then be used in place of Time on the X-axis. I haven't found a way to use the function on the Y-axis.
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Very interesting. Thanks!