split y- Axis with sgplot- with no connector gap on x axis

[jenim514]

Hi,  i need to create this graphic but I can't figure out how to keep the lines continuous with the break in the y-axis

Here is my mock:

But here is a snip of what I am getting with my code. Any help is greatly appreciated!!

Here is my code.  

proc sgplot data=all&pcode  NOAUTOLEGEND ;
   series x=avisitn y=aval / group=usubjid /*grouplc=trt01p*/  name='grouping' markers markerattrs=(size=10pt symbol=trianglefilled);
   keylegend 'grouping' / type=linecolor;
     
  
   xaxis label="Days after HCT" values=(0 28 56 90) valuesdisplay= ('0' '28' '56' '90');                                                                                       
   yaxis label="&yax" ranges=(0-10 80-max) values=(0 to 100 by 10);

   styleattrs datalinepatterns=(solid solid) ;
run;

[ChrisNZ]

Having a "continuous" line is misleading.

The X value for Y=70 is not 5 as the first graph  implies, but 25 as correctly reported by the second graph. 

[jenim514]

Is there a way to narrow the interval space between 0 and 28 on the x-axis, keeping all values currently displayed?

[ChrisNZ]

What would be the benefit of removing 20-odd days on an axis that displays 200 days?