x

Either x or y must be specified

y

Either x or y must be specified

It cannot be a nominal value

target

No

General
parameters

Fitting curve

If Normal Distribution is selected, the Gaussian curve that best fits the data distribution is drawn.

Continuous attributes only.

Show null values

If selected missing values are displayed.

Reverse order

If selected, the order of values in the x axis is reversed.

By default the order is a-z; if selected the order becomes z-a.

Nominal attributes only.

Sort by value

If selected bars are sorted according to the value of their height (i.e. the y value).

Nominal attributes only

Orientation

Displays the bars vertically or horizontally.

Displayed value

Select which value should be plotted from the following possibilities:

• Standard: the total (if a y is present, the aggregate operator of the y as defined by another option not explained here; if y is not present the count)

• Total percentage: the percentage of the bar on the total (see above on how to compute the total)

• Target percentage: the percentage of the bar on the target

For example if x has three values: a, b and c and the average (or sum, mode etc.) of y is 5 for a,10 for b and 20 for c. If Standard is selected as the Displayed Value the height of the three bars is 5, 10 and 20. If Total Percentage is selected the percentage is displayed. As the sum is 35, the three bars will have the following heights: 100*5/(35), 100*10/(35), 100*20/(35).

X attribute

Number of bins

Defines the number of displayed intervals for the attributes.

Target attribute

Number of bins

Defines the number of displayed intervals for the attributes.

Y attribute

Aggregate operator

The operator required to aggregate data.

Possible values are average, maximum, median, minimum, mode and sum.

Stacked bar plot with target

The plot is the same as the grouped bar plot with target example, but using a stacked bar visualization.