Basic pie chart
A pie chart is a divided into sectors, illustrating
numerical proportion. In a pie chart, the arc length of each sector (and
consequently its central angle and area), is proportional to the quantity it
represents. While it is named for its resemblance to a pie which has been
sliced, there are variations on the way it can be presented.
Rotated pie chart
By default, pie charts begin with the left edge of the
first slice pointing straight up. You can change that with the
pieStartAngle option. Here, we rotate the chart clockwise 180
degrees with an option of pieStartAngle: 180. So chosen because
that particular angle happens to make the slices reflected.
Basic donut chart
A donut chart is functionally identical to a pie chart,
with the exception of a blank center and the ability to support multiple
statistics at once. donut charts provide a better data intensity ratio to
standard pie charts since the blank center can be used to display additional
related data.
Rotated donut chart
By default, donut charts begin with the left edge of
the first slice pointing straight up. You can change that with the
pieStartAngle option. Here, we rotate the chart clockwise 180
degrees with an option of pieStartAngle: 180. So chosen because
that particular angle happens to make the slices reflected.
3D pie charts
A 3D pie chart is used to give the chart a 3D look. Often used
for aesthetic reasons, the third dimension does not improve the reading of the data; on
the contrary, these plots are difficult to interpret because of the distorted effect of
perspective associated with the third dimension. The use of superfluous dimensions not
used to display the data of interest is discouraged for charts in general, not only for
pie charts.
Exploded pie charts
Example of pie charts withexploded slices. Pie slices can be
separated from the rest of the chart with the offset property of the slices option. To
separate a slice, create a slices object and assign the appropriate slice number an
offset between 0 and 1. Below, we assign progressively larger offsets to slices 4
(Gujarati), 12 (Marathi), 14 (Oriya), and 15 (Punjabi). Examples below display both pie
and donut chart versions.
Diff pie charts
Inner circle radius
Example of diff pie chart with radius
factor - the relative size of the circles can be controlled with
diff.innerCircle.radiusFactor option.
Inner circle transparency
Example of diff pie chart with
transparency - the transparency of each data can be controlled
with diff.oldData.opacity and
diff.newData.opacity.
Inner circle border
Example of diff pie chart with border
factor - the border between the two datas can be controlled with
diff.innerCircle.borderFactor option.
Inverted difference
Example of diff pie chart with
inverted behaviour - the behavior can be inverted so that the
oldest data surrounds the newest data with
diff.oldData.inCenter option.
