Graphics and Charts

Graphics and Charts

Graphics can be created using the Graph icon Graph

in the spreadsheet listing. Two simple forms are presented to select the parameters of the graphic.

Select the Graphic Type and Output Format

Fig. 1: First form

The radio buttons select the type of graphic to be generated. A first example will be made with the Pie Chart and a second one with Multibar. Multiline and Bar Stack use the same parameters as Bar Stack.

Multiple output formats are available. Depending on the installed extensions on the server, some elements might not be available. PDF and PostScript are printable format and require the paper size and orientation parameters. PNG and JPEG are images and require height and width parameters in pizels.

If the objective is to include the graphic in a wiki page, the selected format will only be used for the preview.

Parameters

Figure 2 presents the parameters entered to obtain a pie chart from the speadsheet and Figure 3 is the result obtained. The page is divided in three sections:

Parameter form
Spreadsheet
Wiki Plug-in

The parameter form is used to select the elements that will be displayed in the graphic. All parameters under the series label are value ranges from the spreadsheet in A1:Z99 format or comma seperated list of elements (ex: Blue, ))LightBlue,?LightGreen((). The color and style series require special values:

Color

Red
Green
Blue
Yellow
Orange
LightBlue
LightGreen

Style

Thin-LineStroke
Thin-FillStroke
Normal-LineStroke
Normal-FillStroke
Bold-LineStroke
Bold-FillStroke
Bolder-LineStroke
Bolder-FillStroke

The spreadsheet is available as a reference to select the ranges.

The wiki plug-in is updated as the parameters are changed in the form. The code displayed can be pasted in a wiki page to display the graphic. The plug-in does not consider the selected output format. Instead, it will automatically select the best format available. If possible, it will display an image and link to a printable format. Prefered image format is PNG and prefered printable format is PDF.

Pie Chart Parameters

The following table presents the different field of the form, what they are used for and the behavior if left empty.

Title	Used as the title of the graphic	No title
Label	Caption in the legends	No legend
Value	Values used in the chart	Required
Color	Colors used for the elements	Automatically selected
Style	Change border type	Normal-FillStroke

The amount of elements in every range must be the same.

Fig. 2: Parameters for the pie chart.

Fig. 3: Resulting pie chart.

Multibar Parameters

Figure 4 presents the parameters used to create the graphic in Figure 5. Note that different size parameters have been used to suite the large amount of data. Here is the table presenting the different parameters.

Title	Title of the graphic	No title
Independant Scale	Determines if the graphic is vertical or horizontal
Horizontal Scale	Location of the horizontal scale
Vertical Scale	Location of the vertical scale
Label	Caption of the different elements in the legend	No legend
Color	Colors used in the legend	Automatically selected
Style	Border type used	Normal-FillStroke
X	Independant scale range	Required.
Y0	First dependant range	Required.
Y1-Y4	Additional dependant range

The amount of elements in the Label, Color and Style ranges must be equal to the amount of Y ranges used. The amount of elements in the X range and all Y ranges must be the same.