This plot type draws filled areas between lines. This is often called a 'cumulative line plot' or 'component line plot'. Each data set (set of corresponding Y values from each record in the data array) is plotted in order, with the area between each line and the next line is filled solid. The area between the last line and the X axis is also filled. The data must be arranged so the values are (generally) decreasing within each row, because later drawn filled areas will cover previously drawn areas.

This plot type works with data types 'text-data' and 'data-data' (see Section 3.3.1, “Available Data Types”). For 'text-data', the data X values are assumed to be at 0.5+N for N=0,1,2...

The areas are filled with colors as set with SetDataColors.

An example of this plot type can be seen in Example 5.3, “Area Plot”.

This plot type draws a bar chart, with filled rectangles centered on the X values. The rectangles can have a 3-D look or be flat with a border. Multiple data-set plots work, with each one producing a set of bars offset from the previous set.

This plot type only works with data type 'text-data' (see Section 3.3.1, “Available Data Types”). The data X values are assumed to be at 0.5+N for N=0,1,2...

If shading is on with SetShading (default is on with value 5 pixels), then the bars have a 3-D look. If shading is off (SetShading(0)), the bars are flat rectangles with borders. The filled rectangle color is set with SetDataColors. The border color (if shading is off) can be set with SetDataBorderColors.

Examples of this plot type can be seen in Example 5.4, “Bar Chart” and Example 5.5, “Bar Chart - Unshaded”.

This plot type draws a line graph with a markers at each point, thus combining the 'line' and 'point' plot types.

This plot type works with data types 'text-data' and 'data-data' (see Section 3.3.1, “Available Data Types”). It also works with 'data-data-error' for error bars.

Line and marker colors for each line are set with SetDataColors. Marker styles for each line are set with SetPointShapes. Marker sizes for each line are set with SetPointSizes. Line widths for each line are set with SetLineWidths. Line styles (solid or dashed) for each line are set with SetLineStyles.

You can also suppress the line, or the markers, for individual data sets in a graph. This allows you combine points-only, lines-only, and line/points plots. Refer to SetLineStyles and SetPointShapes for details.

For error-bar plots with data type 'data-data-error' only: Error bar colors for each line are set with SetErrorBarColors. Error bar shape (tee or line) is set with SetErrorBarShape. If tee-shaped error bars are used, the width of the upper and lower 'tee' is set with SetErrorBarSize. Error bar line width is set with SetErrorBarLineWidth.

An example of this plot type can be seen in Example 5.7, “Line/Point Plot, Point Shapes”.

This plot type simply draws a line from each point to the next.

This plot type works with data types 'text-data' and 'data-data' (see Section 3.3.1, “Available Data Types”). It also works with 'data-data-error' for error bars.

Line colors for each line are set with SetDataColors. Line widths for each line are set with SetLineWidths. Line styles (solid or dashed) for each line are set with SetLineStyles.

For error-bar plots with data type 'data-data-error' only: Error bar colors for each line are set with SetErrorBarColors. Error bar shape (tee or line) is set with SetErrorBarShape. If tee-shaped error bars are used, the width of the upper and lower 'tee' is set with SetErrorBarSize. Error bar line width is set with SetErrorBarLineWidth.

Examples of this plot type can be seen in Example 5.1, “Line Plot” and Example 5.2, “Line Plot: Functions”.

This plot type draws pie charts. The pie chart can have a 3-D look or be drawn flat. The first pie segment starts at 0 degrees (East, or 3:00PM) and they go around the pie in a counter-clockwise direction. Each segment is labeled with its percentage.

This plot type works with data types 'text-data', 'data-data', and 'text-data-single' (see Section 3.3.1, “Available Data Types”). Data arrays for pie charts are handled differently than with other plot types, so the data types are described in more detail below.

If shading is on with SetShading (default is on with value 5 pixels), then the pie chart has a 3-D look. If shading is off (SetShading(0)), the pie chart is drawn flat (circular rather than oval). The position of the segment percentage labels is set with SetLabelScalePosition.

Examples of this plot type can be seen in Example 5.8, “Pie Chart, text-data-single” (text-data-single), Example 5.9, “Pie Chart, text-data” (text-data), and Example 5.10, “Pie Chart, flat with options” (unshaded).

$data = array(array('', 1), array('',4), array('',5));

$data = array(array('', 10, 10, 20, 10),
              array('', 15, 10, 15, 10));

$data = array(array('', 1, 10, 10, 20, 10),
              array('', 2, 15, 10, 15, 10));

This plot type draws a point marker at each X,Y value.

This plot type works with data types 'text-data' and 'data-data' (see Section 3.3.1, “Available Data Types”). It also works with 'data-data-error' for points with error bars.

Marker colors for each line are set with SetDataColors. Marker styles for each line are set with SetPointShapes. Marker sizes for each line are set with SetPointSizes.

For error-bar plots with data type 'data-data-error' only: Error bar colors for each line are set with SetErrorBarColors. Error bar shape (tee or line) is set with SetErrorBarShape. If tee-shaped error bars are used, the width of the upper and lower 'tee' is set with SetErrorBarSize. Error bar line width is set with SetErrorBarLineWidth.

Examples of this plot type can be seen in Example 5.12, “Points Plot / Scatterplot” (scatterplot), and Example 5.11, “Points Plot with Error Bars” (with error bars).

This plot type makes stepped lines. For each point, you get a horizontal line from the previous point to the current X, then a vertical line to the current Y.

This plot type works with data types 'text-data' and 'data-data' (see Section 3.3.1, “Available Data Types”). For 'text-data', the data X values are assumed to be at 0.5+N for N=0,1,2...

Line colors per line are set with SetDataColors. Line widths per line are set with SetLineWidths. Line style (solid or dashed) per line are set with SetLineStyles.

An example of this plot type can be seen in Example 5.13, “Squared Plot”.

This plot type draws a bar chart with stacked bars centered on each X value. Each data set value contributes one segment of a stack. That is, the first data set is drawn at the X axis in the first color, then the second data set is drawn stacked above the first in the second color, etc. For this plot type, all Y data values must be greater than or equal to 0. Negative values are not supported.

This plot type only works with data type 'text-data' (see Section 3.3.1, “Available Data Types”). The data X values are assumed to be at 0.5+N for N=0,1,2...

If shading is on with SetShading (default is on with value 5 pixels), then the bars have a 3-D look. If shading is off (SetShading(0)), the bars are flat rectangles with borders. The filled rectangle colors for each stacked segment are set with SetDataColors. The border color (if shading is off) can be set with SetDataBorderColors.

Examples of this plot type can be seen in Example 5.14, “Stacked Bars, Shaded” and Example 5.15, “Stacked Bars, Shaded”.

This plot type draws vertical lines up from the X axis to the Y value at each point. Other implementations call this type of plot 'impulses'. Plotting multiple data sets does not work, because the lines are drawn on top of each other and only one can typically be seen.

This plot type works with data types 'text-data' and 'data-data' (see Section 3.3.1, “Available Data Types”). For 'text-data', the data X values are assumed to be at 0.5+N for N=0,1,2...

Impulse width can be controlled with SetLineWidths.

Examples of this plot type can be seen in Example 5.16, “Thin Bar Line” and Example 5.17, “Thin Bar Line Plot, Wider Lines”.