Unbiased bisector on Scatter plot

Jacovz — Wed, 08 Jan 2025 03:14:43 GMT

Hi,
Is there a way to plot the 1:1 bisector on a scatter plot. I have plotted the fit line but i want the 1:1 bisector to show potential bias in the data.

Re: Unbiased bisector on Scatter plot

jthi — Wed, 08 Jan 2025 05:38:45 GMT

You can use graphic scripts to add extra lines to your graphs. For example line built using

Line({X Origin(), Y Origin()}, {X Origin() + X Range(), Y Origin() + Y Range()}); will go from bottom left to top right and you can replace X Origin()... and so on with your own values as needed

Names Default To Here(1); 

dt = open("$SAMPLE_DATA/Big Class.jmp");

gb = dt << Graph Builder(
	Variables(X(:weight), Y(:height), Overlay(:sex)),
	Elements(Points(X, Y, Legend(9)))
);

Report(gb)[FrameBox(1)] << Add Graphics Script(
	Pen Color("Blue");
	Pen Size(1);
	Line({X Origin(), Y Origin()}, {X Origin() + X Range(), Y Origin() + Y Range()});
);

Re: Unbiased bisector on Scatter plot

Jacovz — Wed, 08 Jan 2025 05:47:15 GMT

Thanks Jarmo

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Unbiased bisector on Scatter plot

Re: Unbiased bisector on Scatter plot

Re: Unbiased bisector on Scatter plot