Ann,
Below is a script that shows the frame size changes can be captured with Save Presentation. It is a modification of a JMP sample script. I tested it on JMP13 and 14.
Names Default To Here( 1 );
Open( "$SAMPLE_DATA/Big Class.jmp" );
biv = bivariate( y( :weight ), x( :height ), Group By(:sex), Fit Line({report(0)}) );
rbiv = biv << report;
rbiv[Framebox(1)] << row legend(:sex, color(1), marker(1));
rbiv << Save Presentation( "$TEMP/jmp_example.pptx");
rbiv[Framebox(1)] << frame size(1500,480);
rbiv << Save Presentation( "$TEMP/jmp_example.pptx", append );
Open( "$TEMP/jmp_example.pptx" );
This is an excerpt from comments in script 6_SavePresentation_BKM.jsl,
/*............................Before you begin, a few notes about scaling. We do
not know PPTX's algorithm for scaling. But what we have found, is if your picture
is proportional, the picture will not be distorted.
PowerPoint has 2 sizes 16:9 (13.33"x7.5") and 4:3(10"x7.5"). Create a template or modify the
JMP default template {install directory path}/pptx/JMPExportTemplate.pptx. For us, it is
$JMP_HOME\pptx\JMPExportTemplate.pptx to be your chosen size
(16:9 is the default for MS office 2013 and 2016). I also recommend changing the master slides
from 44 font to maybe 20 or 24, especially if this is not being projected to a massive room.
Then assuming your ppi (pixels per inch) is approximately 96 x each dimension, you can
estimate and scale if needed.
Decide if you want a title (the outline box) as part of the picture or part of the JMP
save. Let's get started. ....
*/
When I make custom reports, I use p3icli. I have been using it since 2004. JMP presentation is handy but not very flexible.
"Since 2004 our BKM has been to use use P3ICLI, a no cost, copyrighted with
the Free Software Foundation program.
Description: P3ICLI (PowerPoint Picture Insert Command Line Interface) is a
script driven application that inserts user-selected picture and/or graphic files
into Microsoft PowerPoint (R) slides.
P3ICLI can be downloaded from https://sourceforge.net/projects/p3icli/
It documents a JSL example, including the ppt template, JSL script, explanation and resulting
pptx file at https://p3icli.sourceforge.io/jsl_example.html. We like the flexibility it offers
to customize, size, layout, titles and captions. "