topic Re: How to scale each column? in Discussions

How to scale each column?

marcokunzelmann — Mon, 15 Jun 2015 21:52:58 GMT

Hello everyone,

I have a simple question, I want to scale each column in a data table. So that each value of the same column is divided by the standard deviation of the column.

Of course I can use the formula editor therefore if I have only a few columns, unfortunately I have over 1000 columns. So it would be great to have a function/tool in JMP which allows me to do that with all columns iterative. So that all values in column 2 are divided by the standard deviation of column 2 and so on.

I really searched for over 2 hours by myself to solve that problem, which can be solved in excel so easy. So I'm pretty sure there have to be an easy solution.

It would be great if someone can help me!

Greetings!

Re: How to scale each column?

Jeff_Perkinson — Tue, 18 Oct 2016 23:32:04 GMT

You can use Cols->Standardize Attributes... to do this.

First, use Cols->Add Multiple Columns... to add all the columns you'll need to hold your transformations.

Then, select all the newly added columns and choose Cols->Standardize Attributes....

In the Standardize Attributes dialog choose Column Properties->Formula in the Standardize Properties section and check the Substitute Column Reference option.

Then click the Edit Formula button. You'll be creating the formula for the first column in the selected columns and JMP will substitute any column references you use in the formula based on the relative position of the columns in the data table.

-Jeff

Re: How to scale each column?

Craige_Hales — Wed, 17 Jun 2015 18:18:01 GMT

thanks Jeff. A JSL-free solution!

Re: How to scale each column?

KarenC — Thu, 18 Jun 2015 14:26:05 GMT

Very Cool and easy. I have achieved similar results by "cheating", that is opening graph builder, transforming my columns and then adding the transformations into my tables. The advantage to that "cheat" is that you get column names. But still no scripting involved.

However, the "Substitute Column Reference" option is a gem. Just "fixed" 6 column formulas by "fixing" one!

Re: How to scale each column?

marcokunzelmann — Mon, 06 Jul 2015 20:44:12 GMT

A bit late from my side, but thanks for the answer!

Re: How to scale each column?

nac — Tue, 25 Jul 2017 06:23:02 GMT

Hi,

I also have similar problem. I want to divide all of the first 10 columns to Column 11 and multiply them with 100

Column 1 / Column 11*100,

Column 2 / Column 11*100

Column 3 / Column 11*100....

Column 10

Is there a simple way of doing this?