Java FileOutputStream Write saveColorTable(final float[][] table, final File file)

Description

Saves the given color table into the specified file.

License

Open Source License

Return

true if file was saved successfully

Declaration

public static boolean saveColorTable(final float[][] table, final File file) 

Method Source Code

//package com.java2s;
/*// www.ja  va2 s .com
 * #%L
 * VisBio application for visualization of multidimensional biological
 * image data.
 * %%
 * Copyright (C) 2002 - 2014 Board of Regents of the University of
 * Wisconsin-Madison.
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, either version 2 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/gpl-2.0.html>.
 * #L%
 */

import java.io.DataOutputStream;
import java.io.File;

import java.io.FileOutputStream;
import java.io.IOException;

public class Main {
    /** Color table file length. */
    protected static final int LUT_LEN = 768;

    /**
     * Saves the given color table into the specified file.
     * 
     * @return true if file was saved successfully
     */
    public static boolean saveColorTable(final float[][] table, final File file) {
        if (file == null || table == null || table.length != 3)
            return false;

        // convert LUT data to binary format
        final int len = LUT_LEN / 3;
        final int[] b = new int[LUT_LEN];
        int count = 0;
        for (int i = 0; i < 3; i++) {
            if (table[i].length != len)
                return false;
            for (int j = 0; j < len; j++)
                b[count++] = (int) (255 * table[i][j]);
        }

        // write out LUT data
        try {
            final DataOutputStream fout = new DataOutputStream(new FileOutputStream(file));
            for (int i = 0; i < LUT_LEN; i++)
                fout.writeByte(b[i]);
            fout.close();
        } catch (final IOException exc) {
            return false;
        }
        return true;
    }
}

Related

1. saveBytesToFile(byte[] bytes, File file)
2. saveBytesToFile(byte[] data, File file)
3. saveBytesToFile(byte[] str, File file)
4. saveBytesToFile(String filepath, byte[] data)
5. saveCertReqToFile(String certReq, String fileLocation)
6. saveContentToFile(DataHandler content, File outFile)
7. saveData(byte[] data, String PATH, String fileName)
8. saveDataToFile(String filePath, byte[] data)
9. saveDownloadedFile(InputStream is, String destination)