In Graph Builder, if the color range type is set to "Middle 90%", please can there be the option to include a message in the LegendBox to inform viewers of the chart that this range is in effect. At the moment, there is no indication when using a linear scale that outliers are being "hidden" in this way. A non-expert JMP user, or a recipient of a screenshot/flat image would have no way of knowing that this option has been selected.
In the image below I show an example 5-95% scale, plus a suggestion of the kind of informative text that could be included immediately under the scale.

It would be good to have this option accessible via JSL as well as interactively.
Many thanks,
Matthew.
Having thought about my question further, this can be achieved quite simply in JSL as follows:
names default to here(1);
dt = open("$SAMPLE_DATA/Semiconductor Capability.jmp");
win01 = new window( "Demo",
bb = button box( "Toggle color scale: full vs middle 90%", toggleScale ),
gb1 = dt << Graph Builder(
Size( 534, 362 ),
Show Control Panel( 0 ),
Variables( X( :PNP1 ), Y( :NPN1 ), Color( :PNP2 ) ),
Elements( Points( X, Y, Legend( 5 ) ) ),
SendToReport(
Dispatch(
{}, "400", ScaleBox,
{Legend Model(
5,
Properties(
0,
{gradient(
{Range Type( "Middle 90%" ), N Labels( 6 ), Width( 12 )}
)},
Item ID( "PNP2", 1 )
)
)}
)
)
)
);
Report(gb1)["Graph Builder",LegendBox(1)] << sibappend(
tb = text box("Color Scale:\!NMiddle 90% (5-95%)")
);
tb << text color( "Dark Gray" );
toggleScale = expr(
server = gb1 << Get Legend Server;
item = server << Get Legend Items( 1, 1 );
rangeType = (item << Get Gradient Settings)[1][1]["Range Type"];
if( rangeType == "Middle 90%",
rangeType = "Exact Data Range"; tb << set text( "Color Scale:\!NExact Data Range" ),
rangeType = "Middle 90%"; tb << set text( "Color Scale:\!NMiddle 90% (5-95%)" )
);
item << set properties(
{gradient(Range Type( eval(substitute(expr( a ), expr( a ), rangeType ) ) ), N Labels(6))}
);
);
adding such a warning is a great idea.
Available now via Graph Builder Toolbar : )