In reply to Mak.

Hi Mak,
1- How to increase size of datasysmbols? i have used markerattrs=(size=20) but it did not increase after one point.
Using the MARKERATTRS=(SIZE=) option is the correct way to specify the size of the marker symbols. Changing the value for the size should change the size of the symbol in the graph. For example, this will show two different size marker symbols.
proc sgplot data=sashelp.class noautolegend;
scatter x=age y=height / markerattrs=(size=20);
scatter x=age y=weight / markerattrs=(size=30);
run;
Can you send your code that shows the size not changing for your marker symbols?

2 - how to add tick on log based y axis?
I'm not sure exactly what you're asking in this question.

If you want to send email to support@sas.com we can open a track and get more information about what you want to add to your axis.

Thanks,
Marcia