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Mar 9, 2019 12:12 AM
(2997 views)

Use the function to find the first position of the weight column in the top 5 rows greater than 120.

Excuse me, Thanks!

2 ACCEPTED SOLUTIONS

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Here is one way to do it

```
Names Default To Here( 1 );
dt = Open( "$SAMPLE_DATA/big class.jmp" );
dt << New Column( "match",
formula(
value = .;
If( Row() > 5,
count = 0;
For( i = Row() - 5, i <= Row() - 1, i++,
count++;
If( :weight[i] > 120,
value = count;
Break();
);
);
);
value;
)
);
```

```
```

Jim

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The JSL function that here corresponds to Excel's *Match()* would be *Loc(). *However, *Loc()* returns a matrix with the position of all matches, not just the first (or last).

Example:

```
dt << New Column("match",
formula(If(Row() > 4, Loc(:weight[Row() - 4 :: Row()] > 120)[1]))
);
```

3 REPLIES 3

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Here is one way to do it

```
Names Default To Here( 1 );
dt = Open( "$SAMPLE_DATA/big class.jmp" );
dt << New Column( "match",
formula(
value = .;
If( Row() > 5,
count = 0;
For( i = Row() - 5, i <= Row() - 1, i++,
count++;
If( :weight[i] > 120,
value = count;
Break();
);
);
);
value;
)
);
```

```
```

Jim

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Re: How to use function to find the first position greater than the specified starting position?

It seems to me that this kind of calculation is needed by fewer people.

Thank Jim!

This calculation can be done in excel using a simple array formula.

{=MATCH(,IF(E2:E6>120,),)}

Thank Jim!

This calculation can be done in excel using a simple array formula.

{=MATCH(,IF(E2:E6>120,),)}

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The JSL function that here corresponds to Excel's *Match()* would be *Loc(). *However, *Loc()* returns a matrix with the position of all matches, not just the first (or last).

Example:

```
dt << New Column("match",
formula(If(Row() > 4, Loc(:weight[Row() - 4 :: Row()] > 120)[1]))
);
```