Object
- hdf.view.Tools

```
public final class Tools
extends Object
```
The "Tools" class contains various tools for HDF files such as jpeg to HDF converter.

Version:

2.4 9/6/2007

Author:

Peter X. Cao

Field Summary

Fields
Modifier and Type	Field	Description
`static String`	`FILE_TYPE_BMP`	Key for BMP image file type.
`static String`	`FILE_TYPE_GIF`	Key for GIF image file type.
`static String`	`FILE_TYPE_IMAGE`	Key for all image file type.
`static String`	`FILE_TYPE_JPEG`	Key for JPEG image file type.
`static String`	`FILE_TYPE_PNG`	Key for PNG image file type.
`static String`	`FILE_TYPE_TIFF`	Key for TIFF image file type.
`(package private) static char[]`	`HEXCHARS`
`static long`	`MAX_INT16`
`static long`	`MAX_INT32`
`static long`	`MAX_INT64`
`static long`	`MAX_INT8`
`static long`	`MAX_UINT16`
`static long`	`MAX_UINT32`
`static BigInteger`	`MAX_UINT64`
`static long`	`MAX_UINT8`

Constructor Summary

Constructors
Constructor Description

Tools()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static boolean`	`applyBitmask(Object theData, BitSet theMask, ViewProperties.BITMASK_OP op)`	Apply bitmask to a data array.
`static Object`	`autoContrastApply(Object dataIN, Object dataOUT, double[] params, double[] minmax, boolean isUnsigned)`	Apply autocontrast parameters to the original data in place (destructive)
`static int`	`autoContrastCompute(Object data, double[] params, boolean isUnsigned)`	Computes autocontrast parameters (gain equates to contrast and bias equates to brightness) for integers.
`static int`	`autoContrastComputeMinMax(Object data, double[] minmax)`	Computes autocontrast parameters by
`static int`	`autoContrastConvertImageBuffer(Object src, byte[] dst, boolean isUnsigned)`	Converts image raw data to bytes.
`static File`	`checkNewFile(String path, String ext)`	Check and find a non-exist file.
`static boolean`	`checkValidJavaArrayIndex(long value)`	Since Java does not allow array indices to be larger than int type, check the given value to see if it is within the valid range of a Java int.
`static int`	`computeStatistics(Object data, double[] avgstd, Object fillValue)`	Computes mean and standard deviation of a data array
`static void`	`convertImageToHDF(String imgFileName, String hFileName, String fromType, String toType)`	Converts an image file into HDF4/5 file.
`static BigInteger`	`convertUINT64toBigInt(Long l)`	Converts unsigned 64-bit integer data to a BigInteger since Java does not have unsigned types.
`static byte[][]`	`createGrayPalette()`	Creates the gray palette of the indexed 256-color table.
`static byte[][]`	`createGrayWavePalette()`	Creates the gray wave palette of the indexed 256-color table.
`static Image`	`createIndexedImage(BufferedImage bufferedImage, byte[] imageData, byte[][] palette, long w, long h)`	Creates a RGB indexed image of 256 colors.
`static byte[][]`	`createNaturePalette()`	Creates the nature palette of the indexed 256-color table.
`static FileFormat`	`createNewFile(String filename, String dir, String type, List<FileFormat> openFiles)`	Create a new HDF file with default file creation properties
`static byte[][]`	`createRainbowPalette()`	Creates the rainbow palette of the indexed 256-color table.
`static byte[][]`	`createReverseGrayPalette()`	Creates the reverse gray palette of the indexed 256-color table.
`static Image`	`createTrueColorImage(byte[] imageData, boolean planeInterlace, long w, long h)`	Creates a true color image.
`static byte[][]`	`createWavePalette()`	Creates the wave palette of the indexed 256-color table.
`static int`	`findDataDist(Object data, int[] dataDist, double[] minmax)`	Finds the distribution of data values
`static int`	`findMinMax(Object data, double[] minmax, Object fillValue)`	Finds the min and max values of the data array
`static boolean`	`getBinaryDataFromFile(Object dataOut, String fileName, ByteOrder order)`	Reads data from a binary file into a buffer.
`static byte[]`	`getBytes(Object rawData, double[] minmax, long w, long h, boolean isTransposed, byte[] byteData)`	Convert an array of raw data into array of a byte data.
`static byte[]`	`getBytes(Object rawData, double[] minmax, long w, long h, boolean isTransposed, List<Number> invalidValues, boolean convertByteData, byte[] byteData)`
`static byte[]`	`getBytes(Object rawData, double[] minmax, long w, long h, boolean isTransposed, List<Number> invalidValues, boolean convertByteData, byte[] byteData, List<Integer> list)`	Convert an array of raw data into array of a byte data.
`static byte[]`	`getBytes(Object rawData, double[] minmax, long w, long h, boolean isTransposed, List<Number> invalidValues, byte[] byteData)`
`static byte[]`	`getHDF5UserBlock(String filename)`	Read HDF5 user block data into byte array.
`static boolean`	`hasAlpha(Image image)`	This method returns true if the specified image has transparent pixels.
`static boolean`	`isHDF4(String filename)`	look at the first 4 bytes of the file to see if it is an HDF4 file.
`static boolean`	`isHDF5(String filename)`	look at the first 8 bytes of the file to see if it is an HDF5 file.
`static boolean`	`isNaNINF(double val)`	Check if a given number if NaN or INF.
`static boolean`	`isNetcdf(String filename)`	look at the first 4 bytes of the file to see if it is a netCDF file byte[0]=67, byte[1]=68, byte[2]=70, byte[3]=1 or
`static void`	`launchBrowser(String url)`	Launch default browser for a given URL.
`static Object`	`newInstance(Class<?> cls, Object[] initargs)`	Create and initialize a new instance of the given class.
`static byte[][]`	`readPalette(String filename)`	read an image palette from a file.
`static void`	`saveAsBinary(DataOutputStream out, Object data, ByteOrder order)`
`static void`	`saveImageAs(BufferedImage image, File file, String type)`	Save a BufferedImage into an image file.
`static boolean`	`setHDF5UserBlock(String fin, String fout, byte[] buf)`	Write HDF5 user block data into byte array.
`static boolean`	`showConfirm(org.eclipse.swt.widgets.Shell parent, String title, String confMsg)`	Show an SWT Confirm dialog with the given message.
`static void`	`showError(org.eclipse.swt.widgets.Shell parent, String title, String errorMsg)`	Show an SWT error dialog with the given error message.
`static void`	`showInformation(org.eclipse.swt.widgets.Shell parent, String title, String infoMsg)`	Show an SWT Information dialog with the given message.
`static void`	`showWarning(org.eclipse.swt.widgets.Shell parent, String title, String warnMsg)`	Show an SWT Warning dialog with the given message.
`static String`	`toBinaryString(long v, int nbytes)`	Returns a string representation of the long argument as an unsigned integer in base 2.
`static String`	`toBinaryString(BigInteger v, int nbytes)`
`static BufferedImage`	`toBufferedImage(Image image)`	This method returns a buffered image with the contents of an image.
`static String`	`toHexString(long v, int nbytes)`	Returns a string representation of the long argument as an unsigned integer in base 16.
`static String`	`toHexString(BigInteger v, int nbytes)`	Returns a string representation of the BigInteger argument as an unsigned integer in base 16.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - MAX_INT8
```
public static final long MAX_INT8
```
    See Also:
    
    Constant Field Values
  - MAX_UINT8
```
public static final long MAX_UINT8
```
    See Also:
    
    Constant Field Values
  - MAX_INT16
```
public static final long MAX_INT16
```
    See Also:
    
    Constant Field Values
  - MAX_UINT16
```
public static final long MAX_UINT16
```
    See Also:
    
    Constant Field Values
  - MAX_INT32
```
public static final long MAX_INT32
```
    See Also:
    
    Constant Field Values
  - MAX_UINT32
```
public static final long MAX_UINT32
```
    See Also:
    
    Constant Field Values
  - MAX_INT64
```
public static final long MAX_INT64
```
    See Also:
    
    Constant Field Values
  - MAX_UINT64
```
public static final BigInteger MAX_UINT64
```
  - FILE_TYPE_JPEG
```
public static final String FILE_TYPE_JPEG
```
    Key for JPEG image file type.
    
    See Also:
    
    Constant Field Values
  - FILE_TYPE_TIFF
```
public static final String FILE_TYPE_TIFF
```
    Key for TIFF image file type.
    
    See Also:
    
    Constant Field Values
  - FILE_TYPE_PNG
```
public static final String FILE_TYPE_PNG
```
    Key for PNG image file type.
    
    See Also:
    
    Constant Field Values
  - FILE_TYPE_GIF
```
public static final String FILE_TYPE_GIF
```
    Key for GIF image file type.
    
    See Also:
    
    Constant Field Values
  - FILE_TYPE_BMP
```
public static final String FILE_TYPE_BMP
```
    Key for BMP image file type.
    
    See Also:
    
    Constant Field Values
  - FILE_TYPE_IMAGE
```
public static final String FILE_TYPE_IMAGE
```
    Key for all image file type.
    
    See Also:
    
    Constant Field Values
  - HEXCHARS
```
static final char[] HEXCHARS
```
- Constructor Detail
  - Tools
```
public Tools()
```
- Method Detail
  - convertUINT64toBigInt
```
public static BigInteger convertUINT64toBigInt(Long l)
```
    Converts unsigned 64-bit integer data to a BigInteger since Java does not have unsigned types.
    
    Parameters:
    
    l - The long value to convert to a BigInteger
    
    Returns:
    
    A BigInteger representing the unsigned value of the given long.
  - convertImageToHDF
```
public static void convertImageToHDF(String imgFileName,
                                     String hFileName,
                                     String fromType,
                                     String toType)
                              throws Exception
```
    Converts an image file into HDF4/5 file.
    
    Parameters:
    
    imgFileName - the input image file.
    
    hFileName - the name of the HDF4/5 file.
    
    fromType - the type of image.
    
    toType - the type of file converted to.
    
    Throws:
    
    Exception - if a failure occurred
  - saveImageAs
```
public static void saveImageAs(BufferedImage image,
                               File file,
                               String type)
                        throws IOException
```
    Save a BufferedImage into an image file.
    
    Parameters:
    
    image - the BufferedImage to save.
    
    file - the image file.
    
    type - the image type.
    
    Throws:
    
    IOException - if a failure occurred
  - createGrayPalette
```
public static final byte[][] createGrayPalette()
```
    Creates the gray palette of the indexed 256-color table.
    The palette values are stored in a two-dimensional byte array and arrange by color components of red, green and blue. palette[][] = byte[3][256], where, palette[0][], palette[1][] and palette[2][] are the red, green and blue components respectively.
    
    Returns:
    
    the gray palette in the form of byte[3][256]
  - createReverseGrayPalette
```
public static final byte[][] createReverseGrayPalette()
```
    Creates the reverse gray palette of the indexed 256-color table.
    The palette values are stored in a two-dimensional byte array and arrange by color components of red, green and blue. palette[][] = byte[3][256], where, palette[0][], palette[1][] and palette[2][] are the red, green and blue components respectively.
    
    Returns:
    
    the gray palette in the form of byte[3][256]
  - createGrayWavePalette
```
public static final byte[][] createGrayWavePalette()
```
    Creates the gray wave palette of the indexed 256-color table.
    The palette values are stored in a two-dimensional byte array and arrange by color components of red, green and blue. palette[][] = byte[3][256], where, palette[0][], palette[1][] and palette[2][] are the red, green and blue components respectively.
    
    Returns:
    
    the gray palette in the form of byte[3][256]
  - createRainbowPalette
```
public static final byte[][] createRainbowPalette()
```
    Creates the rainbow palette of the indexed 256-color table.
    The palette values are stored in a two-dimensional byte array and arrange by color components of red, green and blue. palette[][] = byte[3][256], where, palette[0][], palette[1][] and palette[2][] are the red, green and blue components respectively.
    
    Returns:
    
    the rainbow palette in the form of byte[3][256]
  - createNaturePalette
```
public static final byte[][] createNaturePalette()
```
    Creates the nature palette of the indexed 256-color table.
    The palette values are stored in a two-dimensional byte array and arrange by color components of red, green and blue. palette[][] = byte[3][256], where, palette[0][], palette[1][] and palette[2][] are the red, green and blue components respectively.
    
    Returns:
    
    the nature palette in the form of byte[3][256]
  - createWavePalette
```
public static final byte[][] createWavePalette()
```
    Creates the wave palette of the indexed 256-color table.
    The palette values are stored in a two-dimensional byte array and arrange by color components of red, green and blue. palette[][] = byte[3][256], where, palette[0][], palette[1][] and palette[2][] are the red, green and blue components respectively.
    
    Returns:
    
    the wave palette in the form of byte[3][256]
  - readPalette
```
public static final byte[][] readPalette(String filename)
```
    read an image palette from a file. A palette file has format of (value, red, green, blue). The color value in palette file can be either unsigned char [0..255] or float [0..1]. Float value will be converted to [0..255]. The color table in file can have any number of entries between 2 to 256. It will be converted to a color table of 256 entries. Any missing index will calculated by linear interpolation between the neighboring index values. For example, index 11 is missing in the following table 10 200 60 20 12 100 100 60 Index 11 will be calculated based on index 10 and index 12, i.e. 11 150 80 40
    
    Parameters:
    
    filename - the name of the palette file.
    
    Returns:
    
    the wave palette in the form of byte[3][256]
  - hasAlpha
```
public static boolean hasAlpha(Image image)
```
    This method returns true if the specified image has transparent pixels.
    
    Parameters:
    
    image - the image to be check if has alpha.
    
    Returns:
    
    true if the image has alpha setting.
  - createIndexedImage
```
public static Image createIndexedImage(BufferedImage bufferedImage,
                                       byte[] imageData,
                                       byte[][] palette,
                                       long w,
                                       long h)
```
    Creates a RGB indexed image of 256 colors.
    
    Parameters:
    
    bufferedImage - the target image.
    
    imageData - the byte array of the image data.
    
    palette - the color lookup table.
    
    w - the width of the image.
    
    h - the height of the image.
    
    Returns:
    
    the image.
  - createTrueColorImage
```
public static Image createTrueColorImage(byte[] imageData,
                                         boolean planeInterlace,
                                         long w,
                                         long h)
```
    Creates a true color image.
    DirectColorModel is used to construct the image from raw data. The DirectColorModel model is similar to an X11 TrueColor visual, which has the following parameters:
    
    Number of bits: 32 Red mask: 0x00ff0000 Green mask: 0x0000ff00 Blue mask: 0x000000ff Alpha mask: 0xff000000 Color space: sRGB isAlphaPremultiplied: False Transparency: Transparency.TRANSLUCENT transferType: DataBuffer.TYPE_INT
    
    The data may be arranged in one of two ways: by pixel or by plane. In both cases, the dataset will have a dataspace with three dimensions, height, width, and components.
    For HDF4, the interlace modes specify orders for the dimensions as:
    INTERLACE_PIXEL = [width][height][pixel components] INTERLACE_PLANE = [pixel components][width][height]
    
    For HDF5, the interlace modes specify orders for the dimensions as:
    INTERLACE_PIXEL = [height][width][pixel components] INTERLACE_PLANE = [pixel components][height][width]
    Parameters:
    
    imageData - the byte array of the image data.
    
    planeInterlace - flag if the image is plane interlace.
    
    w - the width of the image.
    
    h - the height of the image.
    
    Returns:
    
    the image.
  - toBufferedImage
```
public static BufferedImage toBufferedImage(Image image)
```
    This method returns a buffered image with the contents of an image.
    
    Parameters:
    
    image - the plain image object.
    
    Returns:
    
    buffered image for the given image.
  - getBytes
```
public static byte[] getBytes(Object rawData,
                              double[] minmax,
                              long w,
                              long h,
                              boolean isTransposed,
                              byte[] byteData)
```
    Convert an array of raw data into array of a byte data.
    
    Parameters:
    
    rawData - The input raw data.
    
    minmax - the range of the raw data.
    
    w - the width of the raw data.
    
    h - the height of the raw data.
    
    isTransposed - if the data is transposed.
    
    byteData - the data in.
    
    Returns:
    
    the byte array of pixel data.
  - getBytes
```
public static byte[] getBytes(Object rawData,
                              double[] minmax,
                              long w,
                              long h,
                              boolean isTransposed,
                              List<Number> invalidValues,
                              byte[] byteData)
```
  - getBytes
```
public static byte[] getBytes(Object rawData,
                              double[] minmax,
                              long w,
                              long h,
                              boolean isTransposed,
                              List<Number> invalidValues,
                              boolean convertByteData,
                              byte[] byteData)
```
  - getBytes
```
public static byte[] getBytes(Object rawData,
                              double[] minmax,
                              long w,
                              long h,
                              boolean isTransposed,
                              List<Number> invalidValues,
                              boolean convertByteData,
                              byte[] byteData,
                              List<Integer> list)
```
    Convert an array of raw data into array of a byte data.
    
    Parameters:
    
    rawData - The input raw data.
    
    minmax - the range of the raw data.
    
    w - the width of the raw data.
    
    h - the height of the raw data.
    
    isTransposed - if the data is transposed.
    
    invalidValues - the list of invalid values.
    
    convertByteData - the converted data out.
    
    byteData - the data in.
    
    list - the list of integers.
    
    Returns:
    
    the byte array of pixel data.
  - newInstance
```
public static Object newInstance(Class<?> cls,
                                 Object[] initargs)
                          throws Exception
```
    Create and initialize a new instance of the given class.
    
    Parameters:
    
    cls - the class of the instance
    
    initargs - array of objects to be passed as arguments.
    
    Returns:
    
    a new instance of the given class.
    
    Throws:
    
    Exception - if a failure occurred
  - autoContrastCompute
```
public static int autoContrastCompute(Object data,
                                      double[] params,
                                      boolean isUnsigned)
```
    Computes autocontrast parameters (gain equates to contrast and bias equates to brightness) for integers.
    The computation is based on the following scaling
    int_8 [0, 127] uint_8 [0, 255] int_16 [0, 32767] uint_16 [0, 65535] int_32 [0, 2147483647] uint_32 [0, 4294967295] int_64 [0, 9223372036854775807] uint_64 [0, 18446744073709551615] // Not supported.
    Parameters:
    
    data - the raw data array of signed/unsigned integers
    
    params - the auto gain parameter. params[0]=gain, params[1]=bias,
    
    isUnsigned - the flag to indicate if the data array is unsigned integer.
    
    Returns:
    
    non-negative if successful; otherwise, returns negative
  - autoContrastApply
```
public static Object autoContrastApply(Object dataIN,
                                       Object dataOUT,
                                       double[] params,
                                       double[] minmax,
                                       boolean isUnsigned)
```
    Apply autocontrast parameters to the original data in place (destructive)
    
    Parameters:
    
    dataIN - the original data array of signed/unsigned integers
    
    dataOUT - the converted data array of signed/unsigned integers
    
    params - the auto gain parameter. params[0]=gain, params[1]=bias
    
    minmax - the data range. minmax[0]=min, minmax[1]=max
    
    isUnsigned - the flag to indicate if the data array is unsigned integer
    
    Returns:
    
    the data array with the auto contrast conversion; otherwise, returns null
  - autoContrastConvertImageBuffer
```
public static int autoContrastConvertImageBuffer(Object src,
                                                 byte[] dst,
                                                 boolean isUnsigned)
```
    Converts image raw data to bytes. The integer data is converted to byte data based on the following rule
    uint_8 x int_8 (x & 0x7F) << 1 uint_16 (x >> 8) & 0xFF int_16 (x >> 7) & 0xFF uint_32 (x >> 24) & 0xFF int_32 (x >> 23) & 0xFF uint_64 (x >> 56) & 0xFF int_64 (x >> 55) & 0xFF
    Parameters:
    
    src - the source data array of signed integers or unsigned shorts
    
    dst - the destination data array of bytes
    
    isUnsigned - the flag to indicate if the data array is unsigned integer.
    
    Returns:
    
    non-negative if successful; otherwise, returns negative
  - autoContrastComputeMinMax
```
public static int autoContrastComputeMinMax(Object data,
                                            double[] minmax)
```
    Computes autocontrast parameters by
    min = mean - 3 * std.dev max = mean + 3 * std.dev
    Parameters:
    
    data - the raw data array
    
    minmax - the min and max values.
    
    Returns:
    
    non-negative if successful; otherwise, returns negative
  - findMinMax
```
public static int findMinMax(Object data,
                             double[] minmax,
                             Object fillValue)
```
    Finds the min and max values of the data array
    
    Parameters:
    
    data - the raw data array
    
    minmax - the mmin and max values of the array.
    
    fillValue - the missing value or fill value. Exclude this value when check for min/max
    
    Returns:
    
    non-negative if successful; otherwise, returns negative
  - findDataDist
```
public static int findDataDist(Object data,
                               int[] dataDist,
                               double[] minmax)
```
    Finds the distribution of data values
    
    Parameters:
    
    data - the raw data array
    
    dataDist - the data distirbution.
    
    minmax - the data range
    
    Returns:
    
    non-negative if successful; otherwise, returns negative
  - computeStatistics
```
public static int computeStatistics(Object data,
                                    double[] avgstd,
                                    Object fillValue)
```
    Computes mean and standard deviation of a data array
    
    Parameters:
    
    data - the raw data array
    
    avgstd - the statistics: avgstd[0]=mean and avgstd[1]=stdev.
    
    fillValue - the missing value or fill value. Exclude this value when compute statistics
    
    Returns:
    
    non-negative if successful; otherwise, returns negative
  - saveAsBinary
```
public static void saveAsBinary(DataOutputStream out,
                                Object data,
                                ByteOrder order)
                         throws Exception
```
    Throws:
    
    Exception
  - getBinaryDataFromFile
```
public static boolean getBinaryDataFromFile(Object dataOut,
                                            String fileName,
                                            ByteOrder order)
```
    Reads data from a binary file into a buffer.
    
    Parameters:
    
    dataOut - the output stream
    
    fileName - the file to read binary data from
    
    order - the new byte order, either BIG_ENDIAN or LITTLE_ENDIAN
    
    Returns:
    
    true if successful; otherwise, false.
  - toBinaryString
```
public static final String toBinaryString(long v,
                                          int nbytes)
```
    Returns a string representation of the long argument as an unsigned integer in base 2. This is different from Long.toBinaryString(long i). This function add padding (0's) to the string based on the nbytes. For example, if v=15, nbytes=1, the string will be "00001111".
    
    Parameters:
    
    v - the long value
    
    nbytes - number of bytes in the integer
    
    Returns:
    
    the string representation of the unsigned long value represented by the argument in binary (base 2).
  - toBinaryString
```
public static final String toBinaryString(BigInteger v,
                                          int nbytes)
```
  - toHexString
```
public static final String toHexString(long v,
                                       int nbytes)
```
    Returns a string representation of the long argument as an unsigned integer in base 16. This is different from Long.toHexString(long i). This function add padding (0's) to the string based on the nbytes. For example, if v=42543, nbytes=4, the string will be "0000A62F".
    
    Parameters:
    
    v - the long value
    
    nbytes - number of bytes in the integer
    
    Returns:
    
    the string representation of the unsigned long value represented by the argument in hexadecimal (base 16).
  - toHexString
```
public static final String toHexString(BigInteger v,
                                       int nbytes)
```
    Returns a string representation of the BigInteger argument as an unsigned integer in base 16. This is different from BigInteger.toString(16). This function adds padding (0's) to the string based on the nbytes. For example, if v=42543, nbytes=4, the string will be "0000A62F".
    
    Parameters:
    
    v - the BigInteger value
    
    nbytes - number of bytes in the integer
    
    Returns:
    
    the string representation of the unsigned long value represented by the argument in hexadecimal (base 16).
  - applyBitmask
```
public static final boolean applyBitmask(Object theData,
                                         BitSet theMask,
                                         ViewProperties.BITMASK_OP op)
```
    Apply bitmask to a data array.
    
    Parameters:
    
    theData - the data array which the bitmask is applied to.
    
    theMask - the bitmask to be applied to the data array.
    
    op - the bitmask op to be applied
    
    Returns:
    
    true if bitmask is applied successfully; otherwise, false.
  - getHDF5UserBlock
```
public static byte[] getHDF5UserBlock(String filename)
```
    Read HDF5 user block data into byte array.
    
    Parameters:
    
    filename - the HDF5 file from which to get the user block
    
    Returns:
    
    a byte array of user block, or null if there is user data.
  - setHDF5UserBlock
```
public static boolean setHDF5UserBlock(String fin,
                                       String fout,
                                       byte[] buf)
```
    Write HDF5 user block data into byte array.
    
    Parameters:
    
    fin - the input filename
    
    fout - the output filename
    
    buf - the data to write into the user block
    
    Returns:
    
    a byte array of user block, or null if there is user data.
  - isHDF4
```
public static boolean isHDF4(String filename)
```
    look at the first 4 bytes of the file to see if it is an HDF4 file. byte[0]=14, byte[1]=3, byte[2]=19, byte[3]=1 or if it is a netCDF file byte[0]=67, byte[1]=68, byte[2]=70, byte[3]=1
    
    Parameters:
    
    filename - the file to test if HDF4
    
    Returns:
    
    true if the file is of type HDF4
  - isHDF5
```
public static boolean isHDF5(String filename)
```
    look at the first 8 bytes of the file to see if it is an HDF5 file. byte[0]=-199 which is 137 in unsigned byte, byte[1]=72, byte[2]=68, byte[3]=70, byte[4]=13, byte[5]=10, byte[6]=26, byte[7]=10
    
    Parameters:
    
    filename - the file to test if HDF5
    
    Returns:
    
    true if the file is of type HDF5
  - isNetcdf
```
public static boolean isNetcdf(String filename)
```
    look at the first 4 bytes of the file to see if it is a netCDF file byte[0]=67, byte[1]=68, byte[2]=70, byte[3]=1 or
    
    Parameters:
    
    filename - the file to test if netcdf
    
    Returns:
    
    true if the file is of type netcdf
  - launchBrowser
```
public static final void launchBrowser(String url)
                                throws Exception
```
    Launch default browser for a given URL.
    
    Parameters:
    
    url - the URL to open.
    
    Throws:
    
    Exception - if a failure occurred
  - createNewFile
```
public static FileFormat createNewFile(String filename,
                                       String dir,
                                       String type,
                                       List<FileFormat> openFiles)
                                throws Exception
```
    Create a new HDF file with default file creation properties
    
    Parameters:
    
    filename - the file to create
    
    dir - the directory for file
    
    type - the type of the file
    
    openFiles - the list of already opened files
    
    Returns:
    
    the FileFormat instance of the newly created file
    
    Throws:
    
    Exception - if a failure occurred
  - checkNewFile
```
public static final File checkNewFile(String path,
                                      String ext)
```
    Check and find a non-exist file.
    
    Parameters:
    
    path - -- the path that the new file will be checked.
    
    ext - -- the extention of the new file.
    
    Returns:
    
    -- the new file.
  - isNaNINF
```
public static final boolean isNaNINF(double val)
```
    Check if a given number if NaN or INF.
    
    Parameters:
    
    val - the number to be checked
    
    Returns:
    
    true if the number is Nan or INF; otherwise, false.
  - checkValidJavaArrayIndex
```
public static boolean checkValidJavaArrayIndex(long value)
```
    Since Java does not allow array indices to be larger than int type, check the given value to see if it is within the valid range of a Java int.
    
    Parameters:
    
    value - The value to check
    
    Returns:
    
    false if the value is outside the range of a Java int, true otherwise.
  - showError
```
public static void showError(org.eclipse.swt.widgets.Shell parent,
                             String title,
                             String errorMsg)
```
    Show an SWT error dialog with the given error message.
    
    Parameters:
    
    parent - The parent Shell of the MessageDialog
    
    title - The title to set for the MessageDialog
    
    errorMsg - The error message to display in the MessageDialog
  - showInformation
```
public static void showInformation(org.eclipse.swt.widgets.Shell parent,
                                   String title,
                                   String infoMsg)
```
    Show an SWT Information dialog with the given message.
    
    Parameters:
    
    parent - The parent Shell of the MessageDialog
    
    title - The title to set for the MessageDialog
    
    infoMsg - The message to display in the MessageDialog
  - showConfirm
```
public static boolean showConfirm(org.eclipse.swt.widgets.Shell parent,
                                  String title,
                                  String confMsg)
```
    Show an SWT Confirm dialog with the given message.
    
    Parameters:
    
    parent - The parent Shell of the MessageDialog
    
    title - The title to set for the MessageDialog
    
    confMsg - The message to display in the MessageDialog
    
    Returns:
    
    The status of the dialog after closing
  - showWarning
```
public static void showWarning(org.eclipse.swt.widgets.Shell parent,
                               String title,
                               String warnMsg)
```
    Show an SWT Warning dialog with the given message.
    
    Parameters:
    
    parent - The parent Shell of the MessageDialog
    
    title - The title to set for the MessageDialog
    
    warnMsg - The message to display in the MessageDialog

Class Tools

Field Summary

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MAX_INT8

MAX_UINT8

MAX_INT16

MAX_UINT16

MAX_INT32

MAX_UINT32

MAX_INT64

MAX_UINT64

FILE_TYPE_JPEG

FILE_TYPE_TIFF

FILE_TYPE_PNG

FILE_TYPE_GIF

FILE_TYPE_BMP

FILE_TYPE_IMAGE

HEXCHARS

Constructor Detail

Tools

Method Detail

convertUINT64toBigInt

convertImageToHDF

saveImageAs

createGrayPalette

createReverseGrayPalette

createGrayWavePalette

createRainbowPalette

createNaturePalette

createWavePalette

readPalette

hasAlpha

createIndexedImage

createTrueColorImage

toBufferedImage

getBytes

getBytes

getBytes

getBytes

newInstance

autoContrastCompute

autoContrastApply

autoContrastConvertImageBuffer

autoContrastComputeMinMax

findMinMax

findDataDist

computeStatistics

saveAsBinary

getBinaryDataFromFile

toBinaryString

toBinaryString

toHexString

toHexString

applyBitmask

getHDF5UserBlock

setHDF5UserBlock

isHDF4

isHDF5

isNetcdf

launchBrowser

createNewFile

checkNewFile

isNaNINF

checkValidJavaArrayIndex

showError

showInformation

showConfirm

showWarning