topic Re: Summarize Without Alphabetizing in Discussions

Summarize Without Alphabetizing

nbullen — Tue, 28 Nov 2017 23:48:35 GMT

I have a dataset where the order is important and I want to be able to summarize a character column with repeat values without the results being in alphabetical order.

column_A

Usual methods return {a,b,c,d,e,f},

I am trying to get {f,b,d,a,c,e}

Please advise.

Re: Summarize Without Alphabetizing

nbullen — Wed, 29 Nov 2017 00:31:59 GMT

Sometimes, just by asking you end up freeing your mind to possible solutions. I give to you, the non-alphabetizing summarizer:

no_sort_summarize = function({list},
	design_matrix = Design( list, list ); //compares the list to itself returning a 1 in the position of the first match for each repetition
	summarized_matrix = (Transpose(V Sum(design_matrix))); //flatten matrix into one row and transpose into columns
	unique_value_positions = Loc(summarized_matrix); //return only the position of the first instance of a value thus creating a summary
	return(list[unique_value_positions]); //subscript list to return the non-sorted summarized values 
);

Re: Summarize Without Alphabetizing

txnelson — Wed, 29 Nov 2017 02:35:56 GMT

If the order you want to summarize by is the order found in the data, you can set the column property, "Row Order Level" for Column_A, and then run

Tables==>Summary

and the data will be summarized in the order the grouping column was found in the data table

Re: Summarize Without Alphabetizing

dale_lehman — Wed, 29 Nov 2017 13:35:24 GMT

And, more generally, you can use the Value Ordering column property to impose whatever order on the variable you wish. That order will be used in any subsequent analysis (tablulation, graphs, etc.).

Re: Summarize Without Alphabetizing

Jeff_Perkinson — Wed, 29 Nov 2017 19:46:35 GMT

Unfortunately, in JMP 13 and earlier the Summarize() JSL function doesn't respect the Value Ordering property.

I've confirmed that this will be corrected in JMP 14.

Re: Summarize Without Alphabetizing

dale_lehman — Wed, 29 Nov 2017 19:56:36 GMT

Another reason I'm glad I rarely script anything - Tabulate works just fine with Value Ordering.

Re: Summarize Without Alphabetizing

Audrey_Shull — Fri, 08 Jun 2018 20:38:11 GMT

I can officially confirm that Summarize() does now support the Value Ordering property as of JMP 14 and later.

Re: Summarize Without Alphabetizing

PhiIippe — Tue, 21 Jan 2020 07:14:29 GMT

Hi Jeff,

I have JMP 14, but my summarize() function is still alphabetic, does the non-alphabetic version have another name?

Philippe

Re: Summarize Without Alphabetizing

txnelson — Tue, 21 Jan 2020 07:25:35 GMT

I have tried setting the Value Ordering column property for both numeric and character columns under JMP 14.3 and the Summarize() function uses the Value Ordering property as it's order.