The GANTT Procedure

ODS Style Templates

PROC GANTT Style Template
Default Values

ODS style templates, or styles, control the overall look of your output. An ODS style template consists of a set of style elements. A style element is a collection of style attributes that apply to a particular feature or aspect of the output. You can specify a value for each attribute in a style. See Chapter 21: Statistical Graphics Using ODS in SAS/STAT 12.1 User's Guide, for a thorough discussion of ODS Graphics.

To create your own style or to modify a style for use with ODS Graphics, you need to understand the relationships between style elements and graph features. This information is provided in the ODS Graphics documentation at http://support.sas.com/documentation/onlinedoc/base/ . You can create and modify style templates with the TEMPLATE procedure. For more information, see the section “TEMPLATE Procedure: Creating a Style Template” in the SAS Output Delivery System: User's Guide. Kuhfeld (2010) also offers detailed information and examples.

PROC GANTT Style Template

A predefined ODS style template named GANTT is available for the GANTT procedure. You can use the template to maintain a consistent appearance in all graphical output produced by the procedure.

To change the current style, specify the STYLE= option in an ODS destination statement. The specified style is applied to all output for that destination until you change or close the destination or start a new SAS session. For example, the following statement specifies that ODS should apply the GANTT style template to all HTML output:

ods html style=gantt;

To disable the use of graphical styles, specify the SAS system option NOGSTYLE.

The parent style template for the GANTT style is the DEFAULT style. Table 8.13 lists the style elements (in bold) and corresponding attributes specified in the GANTT style. The table also indicates which (if any) PROC GANTT options or graphics options (in a GOPTIONS statement) can be used to override the value of a style attribute.

Table 8.13: Style Elements and Attributes in the GANTT Style

Element/Attributes	Description	GANTT Option	GOPTION
GraphColors	Colors of various graph features	PATTERN=	CPATTERN=, COLORS=
gdata1	Duration of a noncritical activity	PATTERN=	CPATTERN=, COLORS=
gdata2	Slack time for a noncritical activity	PATTERN=	CPATTERN=, COLORS=
gdata3	Duration of a critical activity	PATTERN=	CPATTERN=, COLORS=
gdata4	Slack time for a supercritical activity	PATTERN=	CPATTERN=, COLORS=
gdata5	Duration of a supercritical activity	PATTERN=	CPATTERN=, COLORS=
gdata6	Actual duration of an activity	PATTERN=	CPATTERN=, COLORS=
gdata7	Break due to a holiday	PATTERN=	CPATTERN=, COLORS=
gdata8	Resource-constrained duration of an activity	PATTERN=	CPATTERN=, COLORS=
gdata9	Baseline duration of an activity	PATTERN=	CPATTERN=, COLORS=
gaxis	Axis	CAXIS=	COLORS=
ggrid	Horizontal connecting lines, zone lines	CHCON=, CZONE=	COLORS=
gdata	Default		COLORS=
gcdata	Precedence connections	CPREC=	COLORS=
greferencelines	Reference and timenow lines	CREF=, CTNOW=	COLORS=
gtextt	Title text		CTITLE=
gtext	Text		CTEXT=
glabel	Labels		COLORS=
GraphFonts	Fonts for various graph features
GraphDataFont	Default		FONT=
GraphLabelFont	Labels		FONT=
GraphTitleFont	Title text		FTITLE=
GraphAxisLines	Attributes related to graph axes
Color	GraphColors('gaxis')	CAXIS=	COLORS=
GraphGridLines	Attributes related to horizontal connecting lines and zone lines
Color	GraphColors('ggrid')	CHCON=, CZONE=	COLORS=
GraphConnectLine	Attributes related to precedence connections
Color	GraphColors('gcdata')	CPREC=	COLORS=
GraphReference	Attributes related to reference and timenow lines
Color	GraphColors('greferencelines')	CREF=, CTNOW=	COLORS=
GraphDataText	Attributes related to general text
Color	GraphColors('gtext')	CTEXT=	COLORS=
Font	GraphFonts('GraphDataFont')	FONT=	FONT=
GraphTitleText	Attributes related to title text
Color	GraphColors('gtextt')		CTITLE=
Font	GraphFonts('GraphTitleFont')		FTITLE=
GraphLabelText	Attributes related to label text
Color	GraphColors('glabel')	_CLABEL variable in the LABDATA= data set	COLORS=
Font	GraphFonts('GraphLabelFont')	_FLABEL variable in the LABDATA= data set	FONT=
GraphDataDefault	Default values for the attributes specified in Table 8.14
Color	GraphColors('gdata')		COLORS=

Attributes that you do not override retain the values specified in the style template.

Figure 8.15 demonstrates features of the GANTT graphical style. The GANTT chart in the figure is the first output from Example 8.11.

Figure 8.15: GANTT Style Template: Example

Default Values

If the SAS system option GSTYLE is in effect (this is the default), then the default values of certain PROC GANTT options can depend on the current ODS style template. Table 8.14 lists these PROC GANTT options and lists the order in which PROC GANTT searches for each option’s default value. The order assumes that the GSTYLE system option is in effect; if that is not the case, then the steps that refer to ODS style templates are ignored. Names with arguments indicate style elements and attributes of the current ODS style template. For example, “GraphAxisLines('Color')” refers to the Color attribute of the GraphAxisLines element.

Table 8.14: PROC GANTT Options: Search Orders for Default Values

Option		Search Order for Default Color
CAXIS=	1.	The Color attribute of the GraphAxisLines element of the current ODS style template
	2.	The Color attribute of the GraphDataDefault element of the current ODS style template
	3.	The first color in the COLORS= list in the GOPTIONS statement
CFRAME=	1.	No color filling the axis area (if the GSTYLE system option is not in effect)
	2.	The Color attribute of the GraphWalls element of the current ODS style template
	3.	No color filling the axis area
CHCON=	1.	The Color attribute of the GraphGridLines element of the current ODS style template
	2.	The Color attribute of the GraphDataDefault element of the current ODS style template
	3.	The first color in the COLORS= list in the GOPTIONS statement
CPREC=	1.	The Color attribute of the GraphConnectLine element of the current ODS style template
	2.	The Color attribute of the GraphDataDefault element of the current ODS style template
	3.	The first color in the COLORS= list in the GOPTIONS statement
CREF=	1.	The Color attribute of the GraphReference element of the current ODS style template
	2.	The Color attribute of the GraphDataDefault element of the current ODS style template
	3.	The first color in the COLORS= list in the GOPTIONS statement
CTEXT=	1.	The value specified for the CTEXT= option in the GOPTIONS statement
	2.	The Color attribute of the GraphDataText element of the current ODS style template
	3.	The Color attribute of the GraphDataDefault element of the current ODS style template
	4.	The first color in the COLORS= list in the GOPTIONS statement
CTNOW=	1.	The Color attribute of the GraphReference element of the current ODS style template
	2.	The Color attribute of the GraphDataDefault element of the current ODS style template
	3.	The first color in the COLORS= list in the GOPTIONS statement
CZONE=	1.	The Color attribute of the GraphGridLines element of the current ODS style template
	2.	The Color attribute of the GraphDataDefault element of the current ODS style template
	3.	The first color in the COLORS= list in the GOPTIONS statement
FONT=	1.	The value specified for the FTEXT= option in the GOPTIONS statement
	2.	The Font attribute of the GraphDataText element of the current ODS style template
	3.	The default hardware font for the graphics output device