PLearn 0.1
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00001 00002 // -*- C++ -*- 00003 00004 // RegularGridVMatrix.cc 00005 // 00006 // Copyright (C) 2003 Pascal Vincent 00007 // 00008 // Redistribution and use in source and binary forms, with or without 00009 // modification, are permitted provided that the following conditions are met: 00010 // 00011 // 1. Redistributions of source code must retain the above copyright 00012 // notice, this list of conditions and the following disclaimer. 00013 // 00014 // 2. Redistributions in binary form must reproduce the above copyright 00015 // notice, this list of conditions and the following disclaimer in the 00016 // documentation and/or other materials provided with the distribution. 00017 // 00018 // 3. The name of the authors may not be used to endorse or promote 00019 // products derived from this software without specific prior written 00020 // permission. 00021 // 00022 // THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 00023 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00024 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 00025 // NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00026 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00027 // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00028 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00029 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00030 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00031 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00032 // 00033 // This file is part of the PLearn library. For more information on the PLearn 00034 // library, go to the PLearn Web site at www.plearn.org 00035 00036 /* ******************************************************* 00037 * $Id: RegularGridVMatrix.cc 6485 2006-12-11 18:55:02Z plearner $ 00038 ******************************************************* */ 00039 00041 #include "RegularGridVMatrix.h" 00042 #include <plearn/math/TMat_maths.h> 00043 00044 namespace PLearn { 00045 using namespace std; 00046 00047 00048 RegularGridVMatrix::RegularGridVMatrix() 00049 { 00050 // ... 00051 00052 // ### You may or may not want to call build_() to finish building the object 00053 // build_(); 00054 } 00055 00056 RegularGridVMatrix::RegularGridVMatrix(TVec<int> the_dimensions, TVec< pair<real,real> > the_range) 00057 :dimensions(the_dimensions.copy()), range(the_range.copy()) 00058 { 00059 build_(); 00060 } 00061 00062 RegularGridVMatrix::RegularGridVMatrix(TVec<int> the_dimensions, Vec the_coordstart, Vec the_coordend) 00063 :dimensions(the_dimensions.copy()), coordstart(the_coordstart.copy()), coordend(the_coordend.copy()) 00064 { 00065 build_(); 00066 } 00067 00068 PLEARN_IMPLEMENT_OBJECT(RegularGridVMatrix, "ONE LINE DESCR", 00069 "RegularGridVMatrix represents the list of coordinates along a regularly spaced grid."); 00070 00071 void RegularGridVMatrix::getNewRow(int i, const Vec& v) const 00072 { 00073 int d = width(); 00074 if(v.length()!=d) 00075 PLERROR("In RegularGridVMatrix::getNewRow, size of v (%d) differs from vmat width (%d)",v.length(), d); 00076 if(i<0 || i>=length()) 00077 PLERROR("In RegularGridVMatrix::getNewRow, row %d out of range [0,%d]",i, length()-1); 00078 int idx = i; 00079 for(int k=d-1; k>=0; k--) 00080 { 00081 int idx_k = idx%dimensions[k]; 00082 idx = idx/dimensions[k]; 00083 v[k] = coordstart[k] + (coordend[k]-coordstart[k])/(dimensions[k]-1)*idx_k; 00084 } 00085 } 00086 00087 void RegularGridVMatrix::declareOptions(OptionList& ol) 00088 { 00089 // ### Declare all of this object's options here 00090 // ### For the "flags" of each option, you should typically specify 00091 // ### one of OptionBase::buildoption, OptionBase::learntoption or 00092 // ### OptionBase::tuningoption. Another possible flag to be combined with 00093 // ### is OptionBase::nosave 00094 00095 // ### ex: 00096 // declareOption(ol, "myoption", &RegularGridVMatrix::myoption, OptionBase::buildoption, 00097 // "Help text describing this option"); 00098 // ... 00099 declareOption(ol, "dimensions", &RegularGridVMatrix::dimensions, OptionBase::buildoption, 00100 "A vector of integers giving the number of sample coordinates\n" 00101 "for each dimension of the grid. Ex for a 100x100 2D grid: [ 100 100 ]\n"); 00102 declareOption(ol, "range", &RegularGridVMatrix::range, OptionBase::buildoption, 00103 "A vector of low:high pairs with as many dimensions as the grid\n" 00104 "ex for 2D: [ -10:10 -3:4 ] \n"); 00105 declareOption(ol, "coordstart", &RegularGridVMatrix::coordstart, OptionBase::buildoption, 00106 "A vector of all the start ocoordinates of the grid in each dimension\n" 00107 "ex for 2D: [ -10, -3 ] \n"); 00108 declareOption(ol, "coordend", &RegularGridVMatrix::coordend, OptionBase::buildoption, 00109 "A vector of all the end coordinates of the grid in each dimension\n" 00110 "ex for 2D: [ 5, 4 ] \n"); 00111 00112 // Now call the parent class' declareOptions 00113 inherited::declareOptions(ol); 00114 } 00115 00116 void RegularGridVMatrix::build_() 00117 { 00118 int n = range.length(); 00119 if(n>0) 00120 { 00121 coordstart.resize(n); 00122 coordend.resize(n); 00123 for(int k=0; k<n; k++) 00124 { 00125 coordstart[k] = range[k].first; 00126 coordstart[k] = range[k].second; 00127 } 00128 } 00129 00130 width_ = dimensions.length(); 00131 length_ = (width_ ? product(dimensions) : 0); 00132 if(inputsize_<0) 00133 { 00134 inputsize_ = width_; 00135 targetsize_ = 0; 00136 weightsize_ = 0; 00137 } 00138 } 00139 00140 // ### Nothing to add here, simply calls build_ 00141 void RegularGridVMatrix::build() 00142 { 00143 inherited::build(); 00144 build_(); 00145 } 00146 00147 void RegularGridVMatrix::makeDeepCopyFromShallowCopy(CopiesMap& copies) 00148 { 00149 inherited::makeDeepCopyFromShallowCopy(copies); 00150 deepCopyField(dimensions, copies); 00151 deepCopyField(range, copies); 00152 deepCopyField(coordstart, copies); 00153 deepCopyField(coordend, copies); 00154 } 00155 00156 } // end of namespace PLearn 00157 00158 00159 /* 00160 Local Variables: 00161 mode:c++ 00162 c-basic-offset:4 00163 c-file-style:"stroustrup" 00164 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00165 indent-tabs-mode:nil 00166 fill-column:79 00167 End: 00168 */ 00169 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :