Re: Graph Builder: allow setting the tick mark line weightThis doesn't seem to work for me. I can change the axis line weight but not the tick mark weight by modifying line width in properties. Weirdly, I can only increase it once, the line weight won't update after the first change.
Likewise, I'm trying to solve a similar problem, which is tick mark weight and length. You see, my new bosses insist I present data in prism graphs, which I'm simply not going to do. Instead, I'm going to make it look like I used prism. I'm close to cloning the prism format with JMP (see attached), but need to increase the axis weight, tick mark weight, tick mark length and enclose box plots with a line. What is the best way to do this with JSL?
Ideally, I'd write a script called prismify which would convert an object to prism-like format, but that may be down the road.

Re: Can’t set the tick mark line weightI'm not sure about the height of the tick itself, but starting in JMP 16 you can adjust the color and weight in properties for that item.
Graph Builder: allow setting the tick mark line weight
Note that there is a setting to adjust the distance between the bars, try playing with different negative values in first parameter of Set Side y Side Overlap:
Names Default To Here( 1 );
Open( "$SAMPLE_DATA/Big Class.jmp" );
obj = Graph Builder( Variables( X( :age ), Y( :weight ), Overlay( :sex ) ), Elements( Bar( X, Y ) ) );
frame = Report( obj )[FrameBox( 1 )];
seg = (frame << Find Seg( "Bar Seg" ));
seg << Set Side by Side Overlap( -0.5 );