svn-gvsig-desktop / branches / v10 / libraries / libCq CMS for java.old / src / org / cresques / filter / statistics / ComputeMinMaxFilter.java @ 9056
History | View | Annotate | Download (4.26 KB)
1 |
/*
|
---|---|
2 |
* Cresques Mapping Suite. Graphic Library for constructing mapping applications.
|
3 |
*
|
4 |
* Copyright (C) 2004-5.
|
5 |
*
|
6 |
* This program is free software; you can redistribute it and/or
|
7 |
* modify it under the terms of the GNU General Public License
|
8 |
* as published by the Free Software Foundation; either version 2
|
9 |
* of the License, or (at your option) any later version.
|
10 |
*
|
11 |
* This program is distributed in the hope that it will be useful,
|
12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
14 |
* GNU General Public License for more details.
|
15 |
*
|
16 |
* You should have received a copy of the GNU General Public License
|
17 |
* along with this program; if not, write to the Free Software
|
18 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
19 |
*
|
20 |
* For more information, contact:
|
21 |
*
|
22 |
* cresques@gmail.com
|
23 |
*/
|
24 |
package org.cresques.filter.statistics; |
25 |
|
26 |
import org.cresques.filter.RasterFilter; |
27 |
import org.cresques.io.datastruct.Statistic; |
28 |
|
29 |
|
30 |
/**
|
31 |
* Calcula el m?ximo y el m?nimo de un raster, As? como el segundo menor valor y
|
32 |
* el segundo mayor valor.
|
33 |
* @author Luis W. Sevilla (sevilla_lui@gva.es)
|
34 |
* @author Nacho Brodin (brodin_ign@gva.es)
|
35 |
*/
|
36 |
public abstract class ComputeMinMaxFilter extends RasterFilter { |
37 |
protected int[] min = { |
38 |
Integer.MAX_VALUE, Integer.MAX_VALUE, |
39 |
Integer.MAX_VALUE
|
40 |
}; |
41 |
protected int[] max = { |
42 |
Integer.MIN_VALUE, Integer.MIN_VALUE, |
43 |
Integer.MIN_VALUE
|
44 |
}; |
45 |
protected int[] secondMin = { |
46 |
Integer.MAX_VALUE, Integer.MAX_VALUE, |
47 |
Integer.MAX_VALUE
|
48 |
}; |
49 |
protected int[] secondMax = { |
50 |
Integer.MIN_VALUE, Integer.MIN_VALUE, |
51 |
Integer.MIN_VALUE
|
52 |
}; |
53 |
protected int[] tmpMin = { |
54 |
Integer.MAX_VALUE, Integer.MAX_VALUE, |
55 |
Integer.MAX_VALUE
|
56 |
}; |
57 |
protected int[] tmpMax = { |
58 |
Integer.MIN_VALUE, Integer.MIN_VALUE, |
59 |
Integer.MIN_VALUE
|
60 |
}; |
61 |
|
62 |
/**
|
63 |
* Constructor
|
64 |
*
|
65 |
*/
|
66 |
public ComputeMinMaxFilter() {
|
67 |
super();
|
68 |
} |
69 |
|
70 |
/**
|
71 |
* Operaciones que se realizan antes de la ejecuci?n del filtro
|
72 |
*/
|
73 |
public void pre() { |
74 |
//Obtenci?n de par?metros comunes a todos
|
75 |
this.stats = (Statistic) params.get("stats"); |
76 |
this.stats.tailPercent = 0D; |
77 |
|
78 |
//Operaciones del filtro concreto
|
79 |
this.min = new int[stats.minBandValue.length]; |
80 |
this.max = new int[stats.maxBandValue.length]; |
81 |
this.secondMin = new int[stats.minBandValue.length]; |
82 |
this.secondMax = new int[stats.maxBandValue.length]; |
83 |
this.tmpMin = new int[stats.minBandValue.length]; |
84 |
this.tmpMax = new int[stats.maxBandValue.length]; |
85 |
|
86 |
for (int i = 0; i < min.length; i++) { |
87 |
secondMin[i] = tmpMin[i] = min[i] = Integer.MAX_VALUE;
|
88 |
secondMax[i] = tmpMax[i] = max[i] = Integer.MIN_VALUE;
|
89 |
} |
90 |
} |
91 |
|
92 |
/**
|
93 |
* Operaciones que se realizan despu?s de la ejecuci?n del filtro
|
94 |
*/
|
95 |
public void post() { |
96 |
for (int i = 0; i < 3; i++) { |
97 |
stats.minBandValue[i] = min[i]; |
98 |
stats.maxBandValue[i] = max[i]; |
99 |
stats.secondMinBandValue[i] = secondMin[i]; |
100 |
stats.secondMaxBandValue[i] = secondMax[i]; |
101 |
} |
102 |
} |
103 |
|
104 |
/**
|
105 |
* Obtiene le m?nimo para una banda dada
|
106 |
* @param bandNr banda
|
107 |
* @return valor m?nimo
|
108 |
*/
|
109 |
public int getMin(int bandNr) { |
110 |
return min[bandNr];
|
111 |
} |
112 |
|
113 |
/**
|
114 |
* Obtiene el m?ximo para una banda dada
|
115 |
* @param bandNr banda
|
116 |
* @return valor m?ximo
|
117 |
*/
|
118 |
public int getMax(int bandNr) { |
119 |
return max[bandNr];
|
120 |
} |
121 |
|
122 |
/**
|
123 |
* Obtiene el objeto stats con el calculo de m?ximos y m?nimos
|
124 |
*/
|
125 |
public Object getResult(String name) { |
126 |
if (name.equals("stats")) { |
127 |
return stats;
|
128 |
} else {
|
129 |
return null; |
130 |
} |
131 |
} |
132 |
} |