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The {{Forge|dataframe}} package is part of the [[Octave Forge]] project. It is a data manipulation toolbox similar to R data.frame and is maintained by Pascal Dupuis. | |||
== Introduction == | |||
This package permits to handle complex (both in the sense of complex numbers and high complexity) data as if they were ordinary arrays, except that each column MAY possess a different type. It also provides a fairly complete interface to CSV files, permitting to cope with a number of oddities, like e.g., CSV files starting with a header spread over a few lines. The resulting array tries as far as it can to mimic an array in such a way that binary operators and usual functions will work as expected. | This package permits to handle complex (both in the sense of complex numbers and high complexity) data as if they were ordinary arrays, except that each column MAY possess a different type. It also provides a fairly complete interface to CSV files, permitting to cope with a number of oddities, like e.g., CSV files starting with a header spread over a few lines. The resulting array tries as far as it can to mimic an array in such a way that binary operators and usual functions will work as expected. | ||
Meta-information is also handled. Rows and columns may have a name, and this name is searchable. If for whatever reason the ordering of a CSV file changes, searching by column names will return the expected information. | Meta-information is also handled. Rows and columns may have a name, and this name is searchable. If for whatever reason the ordering of a CSV file changes, searching by column names will return the expected information. | ||
== Example == | |||
To get a first taste, let's load the test csv file coming with the package: | To get a first taste, let's load the test csv file coming with the package: | ||
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When selecting vectors, this transformation in array is automatic. The DC current is contained in elements | When selecting vectors, this transformation in array is automatic. The DC current is contained in elements | ||
31 to 40 (fourth column): | 31 to 40 (fourth column): | ||
>> | >> experiment(31:40) | ||
ans = | ans = | ||
Columns 1 through 9: | Columns 1 through 9: |
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