topic Add the data value on spaghetti plot in Graphics Programming

Add the data value on spaghetti plot

jojo — Wed, 10 Jan 2024 01:08:10 GMT

I am working on spaghetti plot using proc sgplot, just wonder if there is a way to add the data value on each data point.

Re: Add the data value on spaghetti plot

Quentin — Wed, 10 Jan 2024 02:06:51 GMT

Can you please show a small example of your data, and your code to produce the spaghetti plot without the labels? And then describe what data value labels you want to add. Normally a spaghetti plot will be a lot of overlapping lines (like spaghetti), so labeling values wouldn't make sense. Do you mean you want to label each strand of the spaghetti?

This blog post by Rick Wicklin might be helpful to you. It shows a spaghetti plot, and discusses how spaghetti plots differ from line plots. https://blogs.sas.com/content/iml/2016/06/02/create-spaghetti-plots-in-sas.html

Re: Add the data value on spaghetti plot

LeliaM — Wed, 10 Jan 2024 13:40:56 GMT

You can add a label at each data point on a spaghetti plot, with the DATALABEL option after the / on the SERIES statement. Below is sample code that illustrates the syntax:

data one;
input trt_group time subject results;
datalines;
1 2 100 20
1 4 100 30
1 6 100 35
1 8 100 50
1 2 200 40
1 4 200 25
1 6 200 40
1 8 200 30
1 2 300 25
1 4 300 40
1 6 300 45
1 8 300 55
2 2 400 15
2 4 400 35
2 6 400 50
2 8 400 45
2 2 500 35
2 4 500 35
2 6 500 20
2 8 500 35
;
run;
ODS html;
proc sgplot data=one;
title 'Study Results by Treatment Group';
series x=time y=results / group=subject grouplc=trt_group name='grouping' datalabel=results;
keylegend 'grouping' / type=linecolor;
run;

Re: Add the data value on spaghetti plot

jojo — Wed, 10 Jan 2024 15:57:04 GMT

Thanks very much!