How to prevent locking columns when making a summary table

[#1]

I create A summary table as follows but it puts the Lock Symbol on the columns in the summary table.

FAILS_SUM = FAILS << Summary(

    Group( :Lot, :Wafer, :Part, :End_Date, :X, :Y ),

    linkToOiginalDataTable(0),

    outputTableName(FAILS<<getName() || "_SUMMARY"),

    invisible

);

I programmatically unlock the columns using

colNames = FAILS_SUMMARY << getColumnNames();

for(i=1, i<=nItems(colNames),i++,

  column(colNames) << setLock(0);

);

Grouping column 'Lot' is dissociated from its source column.

Grouping column 'Wafer' is dissociated from its source column.

Grouping column 'X' is dissociated from its source column.

Grouping column 'Y' is dissociated from its source column.

Grouping column 'Part' is dissociated from its source column.

Grouping column 'End_Date' is dissociated from its source column.

What are the criteria for which JML/JSL locks columns when creating a summary table?

What does the Warning I get mean!

How do I cleanly either A) Not lock the columns or B) Unlock Them?

Troy

[#2 · Accepted solution]

A summary table is linked to the original by default and therefore the columns are locked.

It is possible to create an unlinked table with unlocked columns using Summary (see JSL example below) or Tabulate (output table from << Make Into Data Table should have unlocked columns).

​.

Current data table() << Summary( Group( :age ), Mean( :height ),

Link to original data table( 0 ));

[#3 · Accepted solution]

... which makes sense except that Troy has "linkToOiginalDataTable(0)" in his code !

It looks like a typo:  "Oiginal" !!

[#4]

You can unlock a column with this code:

dt:Column<<lock(0);