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Apr 17, 2015 9:51 AM
(931 views)

I will explain what I am trying to achieve with an example

ID | Value | Sum |
---|---|---|

1 | 5 | 13 |

1 | 6 | 13 |

2 | 9 | 9 |

3 | 1 | 1 |

1 | 2 | 13 |

I have a column with a bunch of IDs, they can repeat. Then a have a second column with different values for those IDs.

On the 3rd column, I am trying to have a formula to sum all the Values from all the rows that have the same ID as the current row.

For Row 1 we have, ID = 1, so 5+6+2= 13

Any ideas on how to do that?

1 REPLY

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Apr 17, 2015 10:00 AM
(491 views)

Using the ColSum() function with a second argument to specify a By variable should work. The script below recreates your table, using a formula for the third column:

New Table**(** "Data",

Add Rows**(** **5** **)**,

New Column**(** "ID",

Numeric,

"Continuous",

Set Values**(** **[****1**, **1**, **2**, **3**, **1]** **)**

** )**,

New Column**(** "Value",

Numeric,

"Continuous",

Set Values**(** **[****5**, **6**, **9**, **1**, **2]** **)**

** ****)**,

New Column**(** "SumIf",

Numeric,

"Continuous",

Formula**(** Col Sum**(** :Value, :ID **)** **)**

**)**

**)**

Hope that helps,

Michael

Michael Crotty

Sr Statistical Writer

JMP Development

Sr Statistical Writer

JMP Development