Hi JMP Community :) Below is a table representing the data I'm looking at (in a lot smaller scale). I wish to create a list of the weights measured on the dates closest to "Arrival dates" for the specific IDs. I used JMP to get my data in this order, and I tried combining Excels INDEX, MATCH and OFFSET functions to get my desired list, but can't seem to get the right result. Hope someone out there can help :) Kind regards, Rae IDARRIVAL DATEDATE1WEIGHT1DATE2WEIGHT2DATE3WEIGHT3DATE4WEIGHT4 DATE NEAREST ARRIVALWEIGHT NEAREST ARRIVAL1234567841109.5843108.556039681.386238227.885842507.2861 2345678142634.7742509.910042634.7711141948.610540128.4112 3456781238087.2842234.544541578.414638087.2845.541733.0347 4567812341221.3340842.345842575.535741221.3358.542003.3558 5678123442025.3742025.376539900.696640925.146541464.5467 6781234538821.7439075.547043005.437141185.526938821.7470 7812345639074.1140477.915039074.1115139310.4315341505.26150 8123456742515.4937998.559241824.978942626.119341051.3492

Attached is a new version of the formulas. I am not sure if your date columns are JMP date/time columns. I made the assumption they are, and therefore, I use the In Datys() function to calculate the number of days to subtract for the comparison. If your column is not a JMP date/time value, you need to change the subtraction to the value for a day. nearest.jmp

Great! THANK YOU! One more question: is there a way to add the criteria that the weight nearest arrival has to be within 2 days of arrival(and if no such date exist leave it blank)? Kind regards, Rae

My error....I attached the wrong file....I think the new attachement will work better nearest.jmp

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How to find weight measured nearest to specific dates?

raeish

Hi JMP Community

Below is a table representing the data I'm looking at (in a lot smaller scale). I wish to create a list of the weights measured on the dates closest to "Arrival dates" for the specific IDs.

I used JMP to get my data in this order, and I tried combining Excels INDEX, MATCH and OFFSET functions to get my desired list, but can't seem to get the right result.

Hope someone out there can help

Kind regards,

Rae

ID	ARRIVAL DATE	DATE1	WEIGHT1	DATE2	WEIGHT2	DATE3	WEIGHT3	DATE4	WEIGHT4	DATE NEAREST ARRIVAL	WEIGHT NEAREST ARRIVAL
12345678	41109.58	43108.55	60	39681.38	62	38227.88	58	42507.28	61
23456781	42634.77	42509.9	100	42634.77	111	41948.6	105	40128.4	112
34567812	38087.28	42234.54	45	41578.41	46	38087.28	45.5	41733.03	47
45678123	41221.33	40842.34	58	42575.53	57	41221.33	58.5	42003.35	58
56781234	42025.37	42025.37	65	39900.69	66	40925.14	65	41464.54	67
67812345	38821.74	39075.54	70	43005.43	71	41185.52	69	38821.74	70
78123456	39074.11	40477.9	150	39074.11	151	39310.43	153	41505.26	150
81234567	42515.49	37998.55	92	41824.97	89	42626.11	93	41051.34	92

Accepted answers

All comments

txnelson

If I am understanding exactly what you need, I think the attached data table has the formulas for the 2 new columns you want that will produce the below results:

nearest.jmp

raeish

Wow! You deserve a medal! AMAZING! Thank you SO much!

raeish

Wow! You deserve a medal! AMAZING! Thank you SO much txnelson!

kocemba

Hi txnelson,

First of all thanks for taking the time to answer.

I am working with Raeish on this.

Could the formula be tweaked for another variable to only find the date nearest (before) but not equal to arrival date and the corresponding value at that time?

txnelson

Attached is the same data table as I attached before, now with new formulas.

Please take the time to read the documentation on formula creation in

Help==>Books==>Using JMP

and

Help==>Books==>Scripting Guide

nearest.jsl

raeish

Hi Jim Again, thank you so much for taking your time to reply

We will definitely read about formula creation - Thank you for the tip!

As for the last file you sent, I've tried adding it to the previous formula - but it doesn't seem to change anything. You wrote that you sent the same data table as before(just with a new formula) but when I open it I only get this short formula, not the entire table. Is that right?

names default to here(1);

dt=current data table();

for each row(

dateMatrix = Matrix(:Date1,:Date2,:Date3,:Date4);

Show(dateMatrix);

)

Thank you again,

Kind regards

- Rae