Numbers

From Impure Wiki

basic numeric structures: Number, NumberList, NumberTable

Numbers, besides being the most common data raw material, are highly important because they are used as parameters for many operators, controls and visualizators. You will often use the Number module.

NumberLists are Lists (see inheritance), and that means they have a lot of available operators besides the specific ones for these data structure.

A fast way to visualize a NumberList is using Histogram.

Among the most important operators you can apply to NumberLists are all the possible normalizations.

You may might want to compare two NumberLists (companies market behaviors, trends, country indexes...) in order to try to figure out how much they are correlated. You can then use a Scatter or a ColoredScatter in order to take a glance to the relation between values. You can also measure its Pearson correlation value, the most common index of statistical correlation.

NumberTables are very common, it´s easy to obtain one from an excel file, a .csv file (this file format is pretty common nowadays because it is often the one to be used to share tables data in open data repositories) or a Google spread sheet. But not every Table is made of numbers, some of them are a mix of different kinds of data. You can choose its numerical lists one by one and then assemble a new NumberTable, but much more easy is to use the NumberTableFromTable operator, that will filter all the non NumberLists of the Table.

A NumberTable is depictable in several ways.

There are off course many mathematical operations that could be applied to Numbers, NumberLists and NumberTables (see doing some maths section below). There are other numerical data structires, such as Point and Interval. Click the tag numeric in the libraries to see all the numerical structures, operators, controls, visulizators and apis.