root/trunk/gdal/swig/csharp/apps/GDALWrite.cs

/******************************************************************************
 * $Id$
 *
 * Name:     GDALWrite.cs
 * Project:  GDAL CSharp Interface
 * Purpose:   sample app to write a GDAL raster.
 * Author:   Tamas Szekeres, szekerest@gmail.com
 *
 ******************************************************************************
 * Copyright (c) 2007, Tamas Szekeres
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *****************************************************************************/

using System;

using OSGeo.GDAL;


/**
 * <p>Title: GDAL C# GDALWrite example.</p>
 * <p>Description: A sample app to write a GDAL raster.</p>
 * @author Tamas Szekeres (szekerest@gmail.com)
 * @version 1.0
 */



/// <summary>
/// A C# based sample to write a GDAL raster.
/// </summary> 

class GDALWrite {
        
        public static void usage() 

        { 
                Console.WriteLine("usage: gdalwrite {dataset name}");
                System.Environment.Exit(-1);
        }
 
    public static void Main(string[] args) 
    {

        if (args.Length != 1) usage();

        // Using early initialization of System.Console
        Console.WriteLine("Writing sample: " + args[0]);

        int bXSize, bYSize;
        int w, h;

        w = 100;
        h = 100;

        bXSize = w;
        bYSize = 1;

        //try 
        {
            /* -------------------------------------------------------------------- */
            /*      Register driver(s).                                             */
            /* -------------------------------------------------------------------- */
            Gdal.AllRegister();
            
            /* -------------------------------------------------------------------- */
            /*      Get driver                                                      */
            /* -------------------------------------------------------------------- */  
            Driver drv = Gdal.GetDriverByName("GTiff");

            if (drv == null) 
            {
                Console.WriteLine("Can't get driver.");
                System.Environment.Exit(-1);
            }
            
            Console.WriteLine("Using driver " + drv.LongName);

            /* -------------------------------------------------------------------- */
            /*      Open dataset.                                                   */
            /* -------------------------------------------------------------------- */
            string[] options = new string [] {"BLOCKXSIZE=" + bXSize, "BLOCKYSIZE=" + bYSize};
            Dataset ds = drv.Create(args[0], w, h, 1, DataType.GDT_Byte, options);
                
            if (ds == null) 
            {
                Console.WriteLine("Can't open " + args[0]);
                System.Environment.Exit(-1);
            }

            /* -------------------------------------------------------------------- */
            /*      Setting corner GCPs.                                            */
            /* -------------------------------------------------------------------- */
            GCP[] GCPs = new GCP[] { 
                new GCP(44.5, 27.5, 0, 0, 0, "info0", "id0"),
                new GCP(45.5, 27.5, 0, 100, 0, "info1", "id1"),
                new GCP(44.5, 26.5, 0, 0, 100, "info2", "id2"),
                new GCP(45.5, 26.5, 0, 100, 100, "info3", "id3")
            };
            ds.SetGCPs(GCPs, "");

            Band ba = ds.GetRasterBand(1);

            byte [] buffer = new byte [w * h];

            for (int i = 0; i < buffer.Length; i++)
                buffer[i] = (byte)(i*256/buffer.Length);

            ba.WriteRaster(0, 0, w, h, buffer, w, h, 0, 0);

            ba.FlushCache();
            ds.FlushCache();

        }
        /*catch (Exception e) 
        {
            Console.WriteLine("Application error: " + e.Message);
        }*/
    }
}