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README.md

webppl-csv

This package provides functions for reading and writing CSV files:

// Read data:
var testData = csv.read('data/test-file.csv');

// Write data:
csv.write('data/test-file-copy.csv', testData);

Distribution objects can be written to CSV using csv.writeJoint and csv.writeMarginals

var myJointDistribution = Infer({model: function(){
	var a = flip(0.5)
	var b = flip(0.9)
	return {a, b}
}})

// write distribution, maintaining joint distributional information
csv.writeJoint(myJointDistribution, 'data/test-joint.csv')

// write distribution, one variable per line (marginalized)
csv.writeMarginals(myJointDistribution, 'data/test-marginals.csv')

For more custom usage, use csv.open, csv.close, and csv.writeLine.

If you use the query.table with MCMC, try out csv.writeDistTable

Installation

To globally install webppl-csv, run:

mkdir -p ~/.webppl
npm install --prefix ~/.webppl webppl-csv

This may print warnings (npm WARN ENOENT...) which can be ignored.

To upgrade to the latest version, run:

npm install --prefix ~/.webppl webppl-csv --force

Usage

Once installed, you can make all csv. functions available to program.wppl by running:

webppl program.wppl --require webppl-csv

Testing

Run the included test using:

webppl test/test.wppl --require .

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A WebPPL package for reading and writing csv files

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