topic Re: Plotting censored values in a Life Distribution in Discussions

Plotting censored values in a Life Distribution

bfoulkes — Mon, 23 Mar 2015 15:10:32 GMT

I am building a model using the Life Distribution tool and get a nice plot that shows my failures. Other tools I've used will allow me to plot my censored data, or suspensions, on top of this plot, but I cannot seem to figure out how to do it in JMP. Has anyone figured out how to add the censored data in? Using JSL to do this would be perfectly acceptable too, if anyone knows how to add this in.

Re: Plotting censored values in a Life Distribution

michael_jmp — Mon, 23 Mar 2015 18:50:33 GMT

Hi bradford.foulkes,

Does the Event Plot in Life Distribution plot the censored data in the manner that you're looking for?

Best,
Michael

open("$SAMPLE_DATA/Reliability/Fan.jmp");

Life Distribution( Y(:Time), Censor( :Censor ),

SendToReport(

Dispatch( {}, "Event Plot", OutlineBox, {Close( 0 )} ),

Dispatch( {}, "Compare Distributions", OutlineBox, {Close( 1 )} )

)

);

Re: Plotting censored values in a Life Distribution

bfoulkes — Mon, 23 Mar 2015 18:58:04 GMT

Not quite, I'd almost like a combination of the two plots. The previous software we would use showed the events across the bottom of the chart at a risk of 0 to differentiate them from failures. I received the request to recreate that chart, and that's the only aspect I can't figure out. The idea is to be able to see very easily if we have censored values well past our suspensions or if the failures are on highest values.

Re: Plotting censored values in a Life Distribution

michael_jmp — Mon, 23 Mar 2015 19:02:32 GMT

Would it be possible to send a screenshot of what you're trying to recreate?

Re: Plotting censored values in a Life Distribution

bfoulkes — Tue, 18 Oct 2016 22:54:14 GMT

This is what I'm trying to recreate, where the blue circles are the failures and the red triangles are the censored values

Re: Plotting censored values in a Life Distribution

bfoulkes — Tue, 24 Mar 2015 17:26:44 GMT

Michael, what is really odd is that when I run a Life Distribution model on a segmented part of my population, it doesn't show the suspensions, but when I run it on all the data, the suspensions do show up. It seems that adding in a "By" or a "Where" column to my modeling makes the suspensions not show up, which is how I've been running these up to this point.

Re: Plotting censored values in a Life Distribution

bfoulkes — Tue, 24 Mar 2015 17:27:22 GMT

Re: Plotting censored values in a Life Distribution

michael_jmp — Thu, 26 Mar 2015 15:01:37 GMT

I agree that does sound strange. Is there any way that you could share the data? I'd be interested to see if I can reproduce that behavior.

Regards,

Michael

Re: Plotting censored values in a Life Distribution

bfoulkes — Thu, 26 Mar 2015 15:15:54 GMT

Michael, when I load it like this, I only get failures to show on the plot. If I remove the “By” value, everything shows up. I’ve attached a document with some data that this is happening on too, so I’ll be curious to see if you can recreate it.

Brad

Re: Plotting censored values in a Life Distribution

michael_jmp — Thu, 26 Mar 2015 18:41:53 GMT

Thanks! I was able to reproduce the behavior with your data table. I still can't reproduce it with any other data, but I will pass this issue along to the development team. (I've already made a note of your request to add the censored values to the plot.)

Thanks for using JMP!

Michael

Re: Plotting censored values in a Life Distribution

michael_jmp — Fri, 27 Mar 2015 13:32:56 GMT

This is admittedly not the most robust or nicest looking script, but I think it should help you on your way toward getting a plot like you're looking for.

dt = open("$DOCUMENTS/Temp/JMP_EXAMPLE_TABLE.jmp");

cvec = (dt:Aging << get values)[dt << get rows where(:Censor=="S")];

ld = Life Distribution( Y( :Aging ), Censor( :Censor ), Censor Code( "S" ) );

rp = report(ld);

fb = rp["Compare Distributions"][FrameBox(1)];

buildexpr = expr(Glue());

for( i=1, i<=nrows(cvec), i++,

insertinto(buildexpr,evalexpr(Marker(1,{Expr(cvec[i]),0})))

);

nameexpr(buildexpr);

addexpr = expr(Add Graphics Script);

insertinto(addexpr,nameexpr(buildexpr));

nameexpr(addexpr);

finalexpr = expr(Send(fb));

insertinto(finalexpr,nameexpr(addexpr));

nameexpr(finalexpr);

eval(finalexpr);

Re: Plotting censored values in a Life Distribution

Audrey_Shull — Thu, 08 Apr 2021 20:22:50 GMT

This thread is rather old, but i did find internally where this specific issue was filed with our development team. I can report this was addressed in JMP 13.