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Draw a gauge chart
A gauge chart is a type of data visualization that looks a lot like a speedometer you'd see in a car. It's designed to show a single value on a scale to let you quickly see how it's performing against a goal or a target.
Parameters
Elements / attributes of the <gaugechart> element:
Coordinate parameters (required) that define the print area of the chart
<x1> Starting X coordinate (upper/left corner)
<y1> Starting Y coordinate (upper/left corner)
<x2> Ending X coordinate (bottom/right corner)
<y2> Ending Y coordinate (bottom/right corner)
Parameters that define the appearance of the graph:
<minValue> (numeric, float) Chart min value
<maxValue> (numeric, float) Chart max value
<value> (numeric, float) Chart value to display
<border> Show or hide border. Possibile values:
0 Disable (hide) border
1 Enabled (show) border
1111 Enabled (shows) the border for each side of the frame area (left, top, right, bottom). You can show/hide each side of the border individually.
<radius> (numeric, float) Graph radius (0 : auto, the radius will be calculated so that the graphic fills the print area)
<title> (string) Chart title
<legend> Optional chart legend (if defined)
<segmentlist> Defines the segments that represent the different sections of the chart. Optional. If no segments are defined, a single default segment will be used.