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lwx228
Level VII

Which JMP function can generate a non-repeating integer between two values?

I tried “Random Integer()”, but it produces duplicate integers. Thanks!

2 ACCEPTED SOLUTIONS

Accepted Solutions
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txnelson
Super User

Re: Which JMP function can generate a non-repeating integer between two values?

I do not believe there is such a function in JMP, but it is very simple to create one

Names Default To Here( 1 );

uniqueRandomInteger = Function( {n, min, max},
	{defaultlocal},
	hold = [];
	For( i = 1, i <= n, i++,
		val = Random Integer( min, max );
		While( N Rows( Loc( hold, val ) ) > 0,
			val = Random Integer( min, max )
		);
		hold = hold |/ Matrix( val );
	);
	hold;
);

x=uniqueRandomInteger(10,100,200)
Jim

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gzmorgan0
Super User

Re: Which JMP function can generate a non-repeating integer between two values?

@lwx228 ,

 

This is just an alternate method relying on the JMP function Random Shuffle

Names Default to Here(1);

ibeg = 257;

iend = 500;

random_all = As List( Random Shuffle( Transpose(ibeg::iend) ) );

//suppose you only want 100

vals = random_all[1::100];

show(random_all, nitems(random_all), iend-ibeg+1 );

show(vals, nitems(vals));

I felt like a slacker, given Jim's elegant function. [grin] The attached script includes a function that uses this range/shuffle/subset  method.  Jim, @txnelson,  your function name was spot on, so I used it.

 

 'Imitation is the sincerest form of flattery that mediocrity can pay to greatness.' - Oscar Wilde

  

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3 REPLIES 3
Highlighted
txnelson
Super User

Re: Which JMP function can generate a non-repeating integer between two values?

I do not believe there is such a function in JMP, but it is very simple to create one

Names Default To Here( 1 );

uniqueRandomInteger = Function( {n, min, max},
	{defaultlocal},
	hold = [];
	For( i = 1, i <= n, i++,
		val = Random Integer( min, max );
		While( N Rows( Loc( hold, val ) ) > 0,
			val = Random Integer( min, max )
		);
		hold = hold |/ Matrix( val );
	);
	hold;
);

x=uniqueRandomInteger(10,100,200)
Jim

View solution in original post

Highlighted
gzmorgan0
Super User

Re: Which JMP function can generate a non-repeating integer between two values?

@lwx228 ,

 

This is just an alternate method relying on the JMP function Random Shuffle

Names Default to Here(1);

ibeg = 257;

iend = 500;

random_all = As List( Random Shuffle( Transpose(ibeg::iend) ) );

//suppose you only want 100

vals = random_all[1::100];

show(random_all, nitems(random_all), iend-ibeg+1 );

show(vals, nitems(vals));

I felt like a slacker, given Jim's elegant function. [grin] The attached script includes a function that uses this range/shuffle/subset  method.  Jim, @txnelson,  your function name was spot on, so I used it.

 

 'Imitation is the sincerest form of flattery that mediocrity can pay to greatness.' - Oscar Wilde

  

View solution in original post

Highlighted

Re: Which JMP function can generate a non-repeating integer between two values?

And another way:

 

Names Default to Here( 1 );

random order = Function( { min, max },
	min = Floor( min ); max = Floor( max );
	Index( min, max )[Rank( J( max-min+1, 1, Random Uniform() ) )];
);

Show( random order( 5, 10 ) );
Learn it once, use it forever!
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