Class IDX

java.lang.Object

org.ojalgo.netio.IDX

public abstract class IDX
extends Object

Reads IDX-files as described at THE MNIST DATABASE page. The elements/pixels/bytes are written to the ArrayAnyD instance in order as they're read from the file. The indexing order then needs to be reversed, and that causes the images to be transposed.

Constructor Summary

Constructors

Constructor	Description
IDX()

Method Summary

Modifier and Type	Method	Description
static ArrayAnyD<Double>	parse(File filePath)
static ArrayAnyD<Double>	parse(File file, DenseArray.Factory<Double,?> factory)
static ArrayAnyD<Double>	parse(String filePath)
static ArrayAnyD<Double>	parse(String filePath, DenseArray.Factory<Double,?> arrayFactory)
static void	print(Access2D<?> image, BasicLogger printer)
static void	print(Access2D<?> image, BasicLogger printer, boolean transpose)
static void	print(Access2D<?> image, BasicLogger printer, boolean transpose, double maxExpectedValue)
private static void	printPixel(double gray, BasicLogger printer, double oneThird, double twoThirds)

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

IDX

public IDX()

Method Details

parse

public static ArrayAnyD<Double> parse(File filePath)

parse

public static ArrayAnyD<Double> parse(File file,
 DenseArray.Factory<Double,?> factory)

parse

public static ArrayAnyD<Double> parse(String filePath)

parse

public static ArrayAnyD<Double> parse(String filePath,
 DenseArray.Factory<Double,?> arrayFactory)

print

public static void print(Access2D<?> image,
 BasicLogger printer)

print

public static void print(Access2D<?> image,
 BasicLogger printer,
 boolean transpose)

print

public static void print(Access2D<?> image,
 BasicLogger printer,
 boolean transpose,
 double maxExpectedValue)

printPixel

private static void printPixel(double gray,
 BasicLogger printer,
 double oneThird,
 double twoThirds)