# Making a plot half the width and height of another plot?

I have the following plot:

P1=Plot[1000*Exp[-0.03*t],{t,0,100},Frame->True]

Is there a simple way to make another plot whose frame is is half the width and height of plot P1?

Is there a simple way to make another plot whose frame is is half the width and height of plot P1?

I do not know if I understood the question correctly. If not, will delete this. But how about using the ImageSize for this?

P1 = Plot[1000*Exp[-0.03*t], {t, 0, 100}, Frame -> True, ImageSize -> {300, 300}];

P2 = Plot[1000*Exp[-0.03*t], {t, 0, 100}, Frame -> True, ImageSize -> {150, 150}];

Grid[{{P1, P2}}]

Do you know what size "Large" represents,

I could not find from help this information. It just says "predefined". It might be possible to find this out by making a Large size image, then search the internals of the Plot structure looking for the actual size.

But a quick test shows it is around 560 but it can depend on other factors.

Manipulate[Module[{P1, P2},
P1 = Plot[1000*Exp[-0.03*t], {t, 0, 100}, Frame -> True,
ImageSize -> {p, p}];
P2 = Plot[1000*Exp[-0.03*t], {t, 0, 100}, Frame -> True,
ImageSize -> Large];
Grid[{{P1, P2}}, Spacings -> {10, 5}]
],
{{p, 300, "size?"}, 100, 1000, 10, Appearance -> "Labeled"},
TrackedSymbols :> {p}
]

Move the slider until the images are "same" size. This tells what Large is

560 gives

You can see what options Mathematica used by doing

p = Plot[1000*Exp[-0.03*t], {t, 0, 100}, Frame -> True, ImageSize -> Large]
AbsoluteOptions[p]

This shows that in this case Large used

ImageSize -> {576., 354.747},

So the Manipulate inspection method was close. I do not know how Mathematica decides what Large is. I am sure there are lots of heuristics involved.

• I will try this now, thank you! Right now the actual plot I am using has a size of ImageSize -> Automatic -> Large. Do you know what size "Large" represents, e.g., is it somewhere near {300, 300}? Commented May 21, 2022 at 22:27
• @tardigrade good question. I searched help and could not find what Large size is, But added a way to found out. Commented May 21, 2022 at 22:34