September 2017
Beginner to intermediate
412 pages
8h 55m
English
Content preview from Java Data Analysis
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Generating test datasets
Generating numerical test data is easy with Java. It boils down to using a java.util.Random object to generate random numbers.
Listing 2-13 Generating random numeric data
This program generates the following CSV file of eight rows and five columns of random decimal values.
Figure 2-9 Test data file
Metadata
Metadata is data about data. For example, the preceding generated file could be described as eight lines of comma-separated decimal numbers, five per line. That's metadata. It's the kind of information you would need, for example, ...
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