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Apr 12, 2017 10:43 AM
(3327 views)

Hi All,

Can anyone help me with the search for a particular value in a column and try to find the count of that value with the overall count? In the below example, I am trying to search for value "1" in B column. I found 3 occurences in 10 instances so C is marked with 30%. Similarly for A=2, I found 4 occurence of "1" in 12 instances, so C is marked with 33%.

A | B | C |

1 | 1 | 30% |

1 | 87 | |

1 | 90 | |

1 | 65 | |

1 | 1 | |

1 | 65 | |

1 | 3 | |

1 | 1 | |

1 | 34 | |

1 | 5 | |

2 | 1 | 33% |

2 | 5 | |

2 | 2 | |

2 | 47 | |

2 | 1 | |

2 | 54 | |

2 | 1 | |

2 | 85 | |

2 | 1 | |

2 | 1 | |

2 | 22 | |

2 | 21 |

Thank you

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Apr 12, 2017 1:50 PM
(6578 views)

Solution

I think this should work:

col number(:b, :a, :b )/col number(:b, :a)

You need to take a look at the documentation on Col Number() in the Scripting Index

Help==>Scripting Index==>Col Number

Jim

10 REPLIES

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Apr 12, 2017 10:57 AM
(3325 views)

You can use the Tabulate Platform and specify the % Column Total as the statistic.

You can also create a new column and use the following formula to get the answer

`Col Number( :b, :b ) / Col Number( :b )`

Jim

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Apr 12, 2017 12:29 PM
(3314 views)

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Apr 12, 2017 1:04 PM
(3305 views)

:b represents column "b", from the data table you listed in the original question. The formula,

Col Number( :b, :b) / Col Num( :b )

is interpreted as:

the count of all of the values in column b, for the current rows value of column b, divided by the total count of the values for column b.

In the example data you provided, the calculation for the first row would be:

The count of values found in column b, that match the value for column b. That is, the value of the first row for column b is "1", so it would count the number of "1"s found in column b, which is 8. It would then divide by the total number of the values found in column b, which is 22.

Concerning the Tabulate Platform, what you would do, is to change the modeling type of column b to Nominal, so Tabulate will treat the column as a grouping column. Then you would drag column b to the Drop Zone for Rows. I will then list out each of the values found for column b. By default, the statistic column that is listed is the count(N). To change it to the Column %, you would just drag the Column % statistic to the "N" column, and it would replace the statistic with the column %

Jim

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Apr 12, 2017 1:35 PM
(3301 views)

Thanks.

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Apr 12, 2017 1:50 PM
(6579 views)

I think this should work:

col number(:b, :a, :b )/col number(:b, :a)

You need to take a look at the documentation on Col Number() in the Scripting Index

Help==>Scripting Index==>Col Number

Jim

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Apr 12, 2017 5:49 PM
(3282 views)

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Apr 13, 2017 1:17 AM
(3272 views)

HI

I checked the Col Number. Is this what you mean? but it won't work.

Names Default To Here( 1 );

Open( "$SAMPLE_DATA/Big Class.jmp" );

Col Number( :height,:height )/Col Num( :height )

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Apr 13, 2017 5:35 AM
(3261 views)

you misspelled "col number()" as "col num()"

```
Names Default To Here( 1 );
dt = Open( "$SAMPLE_DATA/Big Class.jmp" );
dt << New Column( "thepercent",
formula( Col Number( :height, :height ) / Col Number( :height ) )
);
```

Jim

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Apr 13, 2017 9:29 AM
(3254 views)