1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
/******************************************************************************
* $Id: GDALColorTable.cs 13677 2008-02-02 23:05:45Z tamas $
*
* Name: GDALColorTable.cs
* Project: GDAL CSharp Interface
* Purpose: A sample app for demonstrating the usage of the ColorTable object.
* 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# GDALColorTable example.</p>
* <p>Description: A sample app for demonstrating the usage of the ColorTable object.</p>
* @author Tamas Szekeres (szekerest@gmail.com)
* @version 1.0
*/
/// <summary>
/// A C# based sample for demonstrating the usage of the ColorTable object.
/// </summary>
class GDALColorTable {
public static void usage()
{
Console.WriteLine("usage: gdalcolortable {source dataset} {destination file}");
System.Environment.Exit(-1);
}
public static void Main(string[] args)
{
if (args.Length != 2) usage();
string file = args[0];
string file_out = args[1];
try {
/* -------------------------------------------------------------------- */
/* Register driver(s). */
/* -------------------------------------------------------------------- */
Gdal.AllRegister();
Driver dv = null;
Dataset ds = null, ds_out = null;
Band ba = null, ba_out = null;
ColorTable ct = null, ct_out = null;
byte [] buffer;
/* -------------------------------------------------------------------- */
/* Open dataset. */
/* -------------------------------------------------------------------- */
ds = Gdal.Open(file, Access.GA_ReadOnly);
ba = ds.GetRasterBand(1);
ct = ba.GetRasterColorTable();
if( ct != null )
Console.WriteLine( "Band has a color table with " + ct.GetCount() + " entries.");
else
{
Console.WriteLine( "Data source has no color table");
return;
}
buffer = new byte [ds.RasterXSize * ds.RasterYSize];
ba.ReadRaster(0, 0, ds.RasterXSize, ds.RasterYSize, buffer,
ds.RasterXSize, ds.RasterYSize, 0, 0);
/* -------------------------------------------------------------------- */
/* Get driver */
/* -------------------------------------------------------------------- */
dv = Gdal.GetDriverByName("GTiff");
ds_out = dv.Create(file_out, ds.RasterXSize, ds.RasterYSize,
ds.RasterCount, ba.DataType, new string [] {});
ba_out = ds_out.GetRasterBand(1);
ct_out = new ColorTable(PaletteInterp.GPI_RGB);
ba_out.WriteRaster(0, 0, ds.RasterXSize, ds.RasterYSize, buffer,
ds.RasterXSize, ds.RasterYSize, 0, 0);
/* -------------------------------------------------------------------- */
/* Copying the colortable */
/* -------------------------------------------------------------------- */
for (int i = 0; i < ct.GetCount(); i++)
{
ColorEntry ce = null, ce_out = null;
ce = ct.GetColorEntry(i);
ce_out = new ColorEntry();
ce_out.c1 = ce.c1;
ce_out.c2 = ce.c2;
ce_out.c3 = ce.c3;
ce_out.c4 = ce.c4;
ct_out.SetColorEntry(i, ce_out);
ce.Dispose();
ce_out.Dispose();
}
ba_out.SetRasterColorTable(ct_out);
}
catch (Exception e)
{
Console.WriteLine("Application error: " + e.Message);
}
}
}
|
