Generation of Connected Scatterplots with SGPLOT

The script configures the ODS graphical environment, sorts the SASHELP.IRIS dataset to prepare for sequential rendering, and generates two visualizations: a simple series linking petal length and width, and a version grouped by species.

Data Analysis

Type : SASHELP

The data comes from the standard SASHELP.IRIS table.

1 Code Block

ODS

Explanation :
Initial configuration of ODS graphical output: definition of the output path, resolution (DPI), dimensions, and image name.

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1	ods listing gpath="/home/nicolasdupont0/resources_github/Graph/Correlation/img" image_dpi=200;
2	ods graphics / reset = all attrpriority=color border = no width =500px height =300px imagename = "connected_scatterplot1" imagefmt = png outputfmt = png antialiasmax = 10000;
3

2 Code Block

PROC SORT Data

Explanation :
Sorting Iris data by petal length and width. This step is crucial for the 'series' type plot (connected line) to follow a logical order.

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1
2	PROC SORT
3	DATA=sashelp.iris out=iris;
4	BY petallength petalwidth;
5	RUN;
6

3 Code Block

PROC SGPLOT

Explanation :
Generation of the first simple series plot connecting the points (x=length, y=width).

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1	PROC SGPLOT DATA=iris;
2	title 'Fisher (1936) Iris Data';
3	series x=petallength y=petalwidth;
4	RUN;

4 Code Block

PROC SGPLOT

Explanation :
ODS configuration for the second image and generation of the series plot grouped by species with a 'PRESSED' visual style.

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1	ods graphics / reset = all attrpriority=color border = no width =500px height =300px imagename = "connected_scatterplot2" imagefmt = png outputfmt = png antialiasmax = 10000;
2	PROC SGPLOT DATA=iris;
3	title 'Fisher (1936) Iris Data';
4	series x=petallength y=petalwidth / group=species DATASKIN=PRESSED;
5	RUN;

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