[SOLVED] Controlling map order of nominal values

Question

A "map order" is alluded to in the tooltip of the "sort alphabetically" parameter of the Removed Unused Values operator.

Premise 1:
A set of nominal values has an inherent "map order".

Premise2:
This "map order" determines the sequence in which elements are arranged on a chart axis, when a nominal attribute is selected for that axis (e.g. bubble chart with nominal x-axis attribute).

Question1:
Are the premises above correct?

Question2:
Other than the "sort alphabetically" mechanism of the Remove Unused Values Operator, are there any ways to control the "map order"? (...in order to control subsequent chart axis order for nominal attributes.)

tennenrishin · Answer

For anyone else who needs this in future: One way to reorder nominal values is to reorder the exampleset, and then perform a trivial (i.e. identity) Generate Attributes operation on the attribute in question. In the example below, compare eg x vs x scatter chart of the two outputs.

MariusHelf · Answer

Hi,

if I remember correctly, that is not possible, even if the message implies that. However, you can create a second binominal axis. That is certainly less than optimal, but at least it will bring you multiple nominal attributes into the chart.

Best, Marius

BartN · Answer

HI Marius,

Is it possible In Advanced Charts to plot multiple binomial values on the Nominal axis?
The error message "Mixed nominal values on axis ... All nominal series configurations on an axis must refer to the.same nominal mapping..." suggests this.

I have to two binominal attributes with value range {true, false}, used the "Remap Binomials" to define false as negative and true as positive, but that does not result in the same nominal mapping.

Thanks,
Bart