topic Column Properties (Multiple Spec Limits per column) in Discussions

Column Properties (Multiple Spec Limits per column)

RA899 — Wed, 30 Apr 2025 18:11:02 GMT

Hi,
let's say I have a column (Resistance) that is tested at different temperatures. I have three testing temp (Ex:25,35 and 45). Is it possible to have different spec limits for Resistance column based on the temp condition? Thanks.

Re: Column Properties (Multiple Spec Limits per column)

jthi — Wed, 30 Apr 2025 20:36:25 GMT

Currently it isn't possible with spec limits column property and you would have to either use scripting or tall format table and extra columns.

Re: Column Properties (Multiple Spec Limits per column)

markschahl — Tue, 06 May 2025 05:50:30 GMT

@RA899 - Jarmo, as always, is correct :). A workaround for this is to split the column by testing temperature and apply limits to the new columns. You can use Manage Limits to bulk edit the limits. If you have a lot of columns, create a separate data table that contains the variable, LSL, Target, USL.

p.s. Last year I lead an effort where we taught 50+ engineers how to do this so we could do a corporation wide capability study. The method worked well. I too wish a column could support multiple spec limits.

Re: Column Properties (Multiple Spec Limits per column)

Ake — Tue, 06 May 2025 08:12:04 GMT

I just found that the Process Capability platform can use an external table to do this! Very useful!

3 ways to load your specification limits into Process Capability - JMP User Community