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Dataframe package (edit)

Revision as of 10:12, 14 June 2019

97 bytes removed ,  14 June 2019
Overhaul introduction. Add subsections.
(to install)
(Overhaul introduction. Add subsections.)
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Dataframe, Data manipulation toolbox similar to R data.frame  
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.


At an mature development stage. [http://hg.code.sf.net/p/octave/dataframe hg]
== Introduction ==
*Maintainer: Pascal Dupuis
*Contributors:


*Package: [http://octave.sourceforge.net/dataframe/ dataframe]
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.


To install write at the command line:
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.


    pkg install -forge dataframe
== Example ==
 
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 complete a fairly complete interface to CSV files, permitting to cope with a number of oddities, like f.i. CSV files starting with a header spread over a few lines. The resulting array tries as far as it can to mimick 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.


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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   10 DataValue -4.2000 300000 1.0610e-11 6.5355e-13 1.4431e-07    B
   10 DataValue -4.2000 300000 1.0610e-11 6.5355e-13 1.4431e-07    B


Those data were produced while performing a voltage sweep on a sensor, measuring with a impedance bridge
Those data were produced while performing a voltage sweep on a sensor, measuring with an impedance bridge
the parallel capacitor and conductance at a given frequency.
the parallel capacitor and conductance at a given frequency.


The first lines contains a few meta-information: name of the source file and a few comments found in the  
The first lines contain few meta-information: name of the source file and a few comments found in the  
csv file. The purpose is to annotate the results.
csv file. The purpose is to annotate the results.


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   2
   2
When the output is a vector and can be simplified to something simple ... it is.
When the output is a vector and can be simplified to something simple ... it is.
[[Category:Octave Forge]]
Retrieved from "https://wiki.octave.org/Special:MobileDiff/10546...12060"

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