GANNO Procedure

PROC GANNO Statement

Identifies the Annotate data set and draws the graphics output defined by that data set. It can also scale the output to accommodate data-dependent coordinate values and specify an output catalog.

Using the DATASYS Option to Scale Graphs

Syntax

PROC GANNO ANNOTATE=Annotate-data-set
<DATASYS>
<DESCRIPTION='description'>
<GOUT=<libref.>output-catalog>
<IMAGEMAP= output-data-set>
<NAME='entry-name'>;

Summary of Optional Arguments

DATASYS

indicates that absolute or relative data-dependent coordinates occur in the Annotate data set and scales the coordinates to fit the graphics output area.

DESCRIPTION='description'

specifies a description of the output.

GOUT=<libref.>output-catalog

specifies the SAS catalog in which to save the graphics output produced by the GANNO procedure.

IMAGEMAP= output-data-set

creates a temporary SAS data set that is used to generate an image map.

NAME='entry-name'

specifies the name of the GRSEG catalog entry and the name of the graphics output file, if one is created.

Required Argument

ANNOTATE=Annotate-data-set
ANNO=Annotate-data-set: specifies a data set that includes Annotate variables that identify graphics commands and parameters.

See:Using Annotate Data Sets

Optional Arguments

Options in the GANNO statement affect all graphs produced by that statement. You can specify as many options as you want and list them in any order.

DATASYS: indicates that absolute or relative data-dependent coordinates occur in the Annotate data set and scales the coordinates to fit the graphics output area. Use the DATASYS option only with Annotate data sets in which the coordinate system variables XSYS, YSYS, and HSYS specify the values 1, 2, 7, or 8.
Use the DATASYS option when graphics elements that were created with data-dependent variables do not fit in the graphics output area. This happens when the coordinate values generated by the data exceed a range of 0 to 100.

If you omit the DATASYS option, the GANNO procedure attempts to draw each graphics element according to the data values assigned to it, without scaling the values. If the range of data values is too large, some graphics elements will not display.

See:Using the DATASYS Option to Scale Graphs

Example:Scaling Data-Dependent Output

DESCRIPTION='description'

specifies a description of the output. The maximum length for description is 256 characters. The description does not appear in the output. The descriptive text is shown in each of the following:

the chart description for Web output (depending on the device driver). See Chart Descriptions for Web Presentations for more information.
the Table of Contents that is generated when you use the CONTENTS= option on an ODS HTML statement, assuming that the output is generated while the contents page is open.
the description and the properties for the output in the Results window.
the description and properties for the catalog entry in the Explorer.
the Description field of the PROC GREPLAY window.

Alias:DES=

Default:OUTPUT FROM PROC GANNO

GOUT=<libref.>output-catalog: specifies the SAS catalog in which to save the graphics output produced by the GANNO procedure. If you omit the libref, the SAS/GRAPH software looks for the catalog in the temporary library called WORK and creates the catalog if it does not exist.

See:Specifying the Catalog Name and Entry Name for Your GRSEGs

Example:Storing Annotate Graphics

IMAGEMAP= output-data-set: creates a temporary SAS data set that is used to generate an image map in an SVG file when you are sending output to the LISTING destination. (This option is not necessary when you are sending output to the HTML destination.) The drill-down URLs in the image map must be provided by variables in the input data set. These variables are identified to the procedure with the HTML= and HTML_LEGEND= options.

See:Adding Links and Enhancements with the URL=, HTML=, and HTML_LEGEND= Options and Enhancing Drill-Down Behavior in SVG Presentations Using HTML Attributes

NAME='entry-name': specifies the name of the GRSEG catalog entry and the name of the graphics output file, if one is created. The name can be up to 256 characters long, but the GRSEG name is truncated to eight characters. Uppercase characters are converted to lowercase, and periods are converted to underscores. The default GRSEG name is GANNO. If the name duplicates an existing name, then SAS/GRAPH adds a number to the name to create a unique name (for example, GANNO1.)
If the name specified is exactly eight characters long, then the last character of the image output filename is replaced with a number (for example, myimages is changed to myimage1.)

See:About Filename Indexing

Examples:Storing Annotate Graphics

Using the NAME= Option to Produce Multiple Graphs

Details

Using the DATASYS Option to Scale Graphs

If your Annotate data set specifies a coordinate system that is based on data values (that is, XSYS, YSYS, and HSYS are assigned the values 1, 2, 7, or 8), the data values determine the size and location of the graphics elements on the output.

If the procedure that specifies the annotation generates axes (such as GPLOT or GCHART), by default the axes are scaled to accommodate the full range of data values and to fit in the procedure output area. Because all values are included in the axes, the graph displays all the Annotate output that is dependent on data values.

However, if the annotation displays with the GSLIDE or GANNO procedure, which do not generate axes, the data values might generate coordinate values that exceed the limits of the graphics output area.

In this case, you can use the DATASYS option to tell the procedure that the Annotate data set contains data-dependent coordinates and to scale the output accordingly. For an illustration of this process, see Scaling Data-Dependent Output.

When you use the DATASYS option, the GANNO procedure reads the entire input data set before drawing the graph and creates an output environment that is data dependent. That is, the environment is based on the minimum and maximum values that are contained in the data set. It then scales the data to fit this environment so that all graphics elements can be drawn.

Although the DATASYS option enables you to generate graphs using one of the data-dependent coordinate systems, it requires that the procedure scan the entire data set to determine the minimum and maximum data values. You can save this extra pass of the data set by using data-dependent values only in procedures that generate axes. Annotate coordinate system 5 (percent of the procedure output area) is recommended for use with the GANNO procedure. This coordinate system works equally well with the GSLIDE procedure if you decide to display the annotation with titles and footnotes.