topic Re: Some problems when plotting scatterplot by using GTL in SAS Studio 3.8 in Graphics Programming

Some problems when plotting scatterplot by using GTL in SAS Studio 3.8

myrenO3 — Thu, 12 Mar 2020 14:31:18 GMT

Hey guys,

I'm new to draw plots by using GTL in sas. Recently I was trying to draw scatter plots but some problems occured when i was trying a scatterplot within "layout overlay" block. I used SASHELP.CLASSFIT as my training dataset where x=height and y=weight with group=sex. Also, i wanted to display the plot seperately by using groupdisplay=cluster but I faied. it seemed that the scatterplot was still displayed in a overlay mode. So I'm wondering why the groupdisplay option has no effect? (I run all sas codes in SAS studio 3.8 environment)

here is my code:

ods _all_ close;
ods graphics / reset width=900px height=450px;
ods html style=htmlblue path=odsout file="3-scatter.html";
proc template;
  define statgraph myscatter;
    begingraph /; 
      entrytitle "Height and Weight by Sex"; 
      layout overlay / ; 
        scatterplot x=height y=weight / 
           group=sex groupdisplay=cluster name="scatter" markerattrs=(size=12 symbol=starfilled);
      endlayout;	
    endgraph;
  end;
run;

proc sgrender data=sashelp.classfit template=myscatter;
run;

by the way, I was also wondering how to costomize markers with different colors (i.e., green and ) between male(sex=M) and female(sex=F) but i don't know how.

Thanks in advance for any suggestions!

Myren

Re: Some problems when plotting scatterplot by using GTL in SAS Studio 3.8

Jay54 — Thu, 12 Mar 2020 15:05:53 GMT

GroupDisplay=Cluster is effective when one of the axes is discrete. You can make your XAXIS discrete to see the effect by setting TYPE=Discrete in the XaxisOpts bundle on the Layout Overlay statement.

Use the DATACOLORS option on the BEGINGRAPH statement to set group colors.

https://documentation.sas.com/?docsetId=grstatgraph&docsetTarget=n0j696v6yqkb79n12zed3am3omcx.htm&docsetVersion=9.4&locale=en

Re: Some problems when plotting scatterplot by using GTL in SAS Studio 3.8

Jay54 — Thu, 12 Mar 2020 15:31:11 GMT

For SCATTER marker colors, you need to use the DataContrastColors option.

DataColors is used for "fill" colors.

Re: Some problems when plotting scatterplot by using GTL in SAS Studio 3.8

myrenO3 — Fri, 13 Mar 2020 00:43:56 GMT

Thanks for your suggestion where I learned a lot. I succeed changing marker colors by DATACONTRASTCOLORS and displaying scatters by using a discrete xaxis(See figure 1 below). However, it seemed that there was still a liitle difference, compared with the example plot in sas reference document (the figure on the right, also see sas document URL here). Perhaps the example here uses a different type of layout? (lattice for example)

Re: Some problems when plotting scatterplot by using GTL in SAS Studio 3.8

Jay54 — Fri, 13 Mar 2020 00:57:02 GMT

Previously your x variable was 'Height", with "Sex" as the group variable. Now, your x variable is sex. Change it back to height to get the different groups within each value of weight. Make sure to set the axis TYPE=DISCRETE.

Re: Some problems when plotting scatterplot by using GTL in SAS Studio 3.8

myrenO3 — Fri, 13 Mar 2020 02:48:01 GMT

Thanks for your reminding. I tried but it seemed that no changes ocurred. here is my code:

/*1-Basic scatter plot-*/
ods _all_ close;
ods graphics / reset width=900px height=450px;
ods html style=htmlblue path=odsout file="3-scatter.html";
proc template;
  define statgraph myscatter;
    begingraph / datacontrastcolors=(red green); 
      entrytitle "Simple Scatter plot"; 
      layout overlay / 
      	xaxisopts=(type=discrete); 
        scatterplot x=height y=weight / group=sex groupdisplay=cluster name="scatter" markerattrs=(size=12 symbol=starfilled);
        discretelegend "scatter";
      endlayout;	
    endgraph;
  end;
run;

proc sgrender data=sashelp.classfit template=myscatter;
run;

result: