Bubble Plot Generation with SGPLOT

The script begins by defining a macro variable 'name' for naming output files. An 'odsout' fileref is then assigned to the current directory for ODS output management. A SAS^© data table named 'my_data' is created using a DATA step and datalines, containing categorical and numerical variables necessary for the plot. The ODS LISTING output is temporarily closed, and the ODS HTML destination is activated, configuring the creation of an HTML file and a PNG image from the generated plot. A custom title is applied to the plot. The PROC SGPLOT procedure is invoked to create the bubble plot, specifying variables for the X and Y axes, bubble size (based on 'value'), and bubble grouping (based on 'series'). Color and line styles, as well as axis attributes, are defined to improve readability. Finally, the procedure is terminated by 'quit;', the ODS HTML destination is closed, and the ODS LISTING output is reactivated.

Data Analysis

Type : INTERNAL_CREATION

The data used for the plot is entirely generated within the script via a DATA step with 'datalines'. The resulting table is 'my_data'.

1 Code Block

Macro

Explanation :
Defines a macro variable 'name' with the value 'bub1'. This variable will be used later to name the output files (HTML, PNG).

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1	%let name=bub1;

2 Code Block

Global Statement

Explanation :
Assignment of a fileref 'odsout' to the current working directory. This tells SAS where to save ODS-generated output files.

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1	filename odsout '.';

3 Code Block

DATA STEP Data

Explanation :
Creates the SAS data table 'my_data'. The 'color' variable is defined with a length of 8 characters. The 'series', 'x', 'y', and 'value' variables are read from the data lines ('datalines') provided directly in the script.

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1	DATA my_data;
2	LENGTH color $ 8;
3	INPUT series $ 1-1 x y value;
4	DATALINES;
5	A 1.0 1.0 .65
6	A 2.0 0.9 0.3
7	B 1.4 2.3 .65
8	B 2.2 1.4 0.3
9	;
10	RUN;

4 Code Block

ODS Statements

Explanation :
Closes the default ODS LISTING destination. Then opens the ODS HTML destination, specifying the output path via the 'odsout' fileref, the HTML file name ('bub1.htm' thanks to the macro variable '&name'), a title for the HTML document, and an 'htmlblue' style. The 'ods graphics' options are configured to generate a PNG image ('bub1.png') of 800x600 pixels without a border and with an image map.

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1	ODS LISTING CLOSE;
2	ODS HTML path=odsout body="&name..htm"
3	(title="SGplot Bubble Plot")
4	style=htmlblue;
5
6	ods graphics / imagefmt=png imagename="&name"
7	width=800px height=600px noborder imagemap;

5 Code Block

Global Statement

Explanation :
Defines the first title of the plot. It is styled with 'gray33' color, a line spacing of 0.0, and a font height of 23 points, displaying the text 'Bubble Plot'.

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1	title1 color=gray33 ls=0.0 h=23pt "Bubble Plot";

6 Code Block

PROC SGPLOT

Explanation :
Executes the SGPLOT procedure to create the bubble plot. It uses the 'my_data' table. Bubble colors are defined by 'styleattrs datacolors'. The 'bubble' statement specifies 'x' and 'y' for positions, 'value' for size, and 'series' for grouping, with additional options for maximum radius and line attributes. The X and Y axes are fully customized with value ranges, stylized labels, display values, and minor grids.

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1	PROC SGPLOT DATA=my_data aspect=1 noautolegend;
2	styleattrs datacolors=(cx9999ff cx993366);
3	bubble x=x y=y size=value / group=series proportional
4	bradiusmax=70px lineattrs=(color=gray33);
5	yaxis
6	values=(0 to 3 BY 1) label='Y Axis'
7	labelattrs=(size=16pt weight=bold color=gray33)
8	valueattrs=(size=16pt weight=bold color=gray33)
9	offsetmin=0 offsetmax=0 grid minor minorcount=1;
10	xaxis
11	values=(0 to 3 BY 1) label='X Axis'
12	labelattrs=(size=16pt weight=bold color=gray33)
13	valueattrs=(size=16pt weight=bold color=gray33)
14	offsetmin=0 offsetmax=0 grid minor minorcount=1;
15	RUN;

7 Code Block

ODS Statements

Explanation :
Terminates the execution of the SGPLOT procedure with 'quit;'. Then closes the previously opened ODS HTML destination and reactivates the ODS LISTING destination, restoring SAS's default output behavior.

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1	QUIT;
2	ODS HTML CLOSE;
3	ODS LISTING;

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