LORENE
des_coef.C
1 /* Basic routine for plot of spectral coefficients.
2  *
3  * (see file graphique.h for the documentation).
4  */
5 
6 /*
7  * Copyright (c) 1999-2001 Eric Gourgoulhon
8  *
9  * This file is part of LORENE.
10  *
11  * LORENE is free software; you can redistribute it and/or modify
12  * it under the terms of the GNU General Public License as published by
13  * the Free Software Foundation; either version 2 of the License, or
14  * (at your option) any later version.
15  *
16  * LORENE is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19  * GNU General Public License for more details.
20  *
21  * You should have received a copy of the GNU General Public License
22  * along with LORENE; if not, write to the Free Software
23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24  *
25  */
26 
27 
28 char des_coef_C[] = "$Header: /cvsroot/Lorene/C++/Source/Non_class_members/Graphics/des_coef.C,v 1.5 2014/10/13 08:53:21 j_novak Exp $" ;
29 
30 
31 /*
32  * $Id: des_coef.C,v 1.5 2014/10/13 08:53:21 j_novak Exp $
33  * $Log: des_coef.C,v $
34  * Revision 1.5 2014/10/13 08:53:21 j_novak
35  * Lorene classes and functions now belong to the namespace Lorene.
36  *
37  * Revision 1.4 2014/10/06 15:16:04 j_novak
38  * Modified #include directives to use c++ syntax.
39  *
40  * Revision 1.3 2008/08/19 06:42:00 j_novak
41  * Minor modifications to avoid warnings with gcc 4.3. Most of them concern
42  * cast-type operations, and constant strings that must be defined as const char*
43  *
44  * Revision 1.2 2002/10/16 14:36:57 j_novak
45  * Reorganization of #include instructions of standard C++, in order to
46  * use experimental version 3 of gcc.
47  *
48  * Revision 1.1.1.1 2001/11/20 15:19:29 e_gourgoulhon
49  * LORENE
50  *
51  * Revision 1.2 1999/12/20 10:57:17 eric
52  * Modif commentaires.
53  *
54  * Revision 1.1 1999/12/10 12:14:37 eric
55  * Initial revision
56  *
57  *
58  * $Header: /cvsroot/Lorene/C++/Source/Non_class_members/Graphics/des_coef.C,v 1.5 2014/10/13 08:53:21 j_novak Exp $
59  *
60  */
61 
62 
63 // C++ headers:
64 #include"headcpp.h"
65 
66 // C headers:
67 #include <cmath>
68 
69 // PGPLOT headers:
70 #include <cpgplot.h>
71 
72 namespace Lorene {
73 //******************************************************************************
74 
75 void des_coef(const double* cf, int n, double pzero,
76  const char* nomx, const char* nomy, const char* title, const char* device,
77  int newgraph, int nxpage, int nypage) {
78 
79  float xdes[2], ydes[2] ;
80 
81  double pzerol = log10(pzero) ;
82  ydes[0] = float(pzerol) ;
83 
84  // Figure frame
85  // ------------
86 
87  double xmin = - 1 ;
88  double xmax = n ;
89  double ymin = pzerol ;
90  double ymax = pzerol ;
91 
92  for (int i=0; i<n; i++) {
93  double yl = log10(fabs(cf[i])) ;
94  if ( yl > ymax ) ymax = yl ;
95  }
96  double yamp = ymax - ymin ;
97  ymax = ymax + 0.05 * yamp ;
98  ymin = ymin - 0.05 * yamp ;
99 
100  if (ymax <= pzerol) ymax = 2*pzerol ; // assure que le cadre existe
101 
102  // Graphics display
103  // ----------------
104 
105  if ( (newgraph == 1) || (newgraph == 3) ) {
106 
107  if (device == 0x0) device = "?" ;
108 
109  int ier = cpgbeg(0, device, nxpage, nypage) ;
110  if (ier != 1) {
111  cout << "des_coef: problem in opening PGPLOT display !" << endl ;
112  }
113 
114  }
115 
116  // Taille des caracteres:
117  float size = float(1.3) ;
118  cpgsch(size) ;
119 
120  // Epaisseur des traits:
121  int lepais = 1 ;
122  cpgslw(lepais) ;
123 
124  // Fonte axes: caracteres romains:
125  cpgscf(2) ;
126 
127  // Figure frame
128  float xmin1 = float(xmin) ;
129  float xmax1 = float(xmax) ;
130  float ymin1 = float(ymin) ;
131  float ymax1 = float(ymax) ;
132  cpgenv(xmin1, xmax1, ymin1, ymax1, 0, 0 ) ;
133  cpglab(nomx, nomy, title) ;
134 
135  // Drawing of vertical lines to represent the coefficients
136  for (int i=0; i<n; i++) {
137  int lstyle ;
138  xdes[0] = float( i ) ;
139  xdes[1] = xdes[0] ;
140  if ( fabs(cf[i]) < pzero ) {
141  ydes[1] = float(pzerol) ;
142  lstyle = 1 ;
143  }
144  else {
145  ydes[1] = float( log10(fabs(cf[i])) ) ;
146  if (cf[i] < 0) lstyle = 2 ;
147  else lstyle = 1 ;
148  }
149  cpgsls(lstyle) ; // line en trait plein (lstyle=1)
150  // ou pointilles (lstyle=2)
151  cpgline(2, xdes, ydes) ;
152  }
153 
154  cpgsls(1) ; // restitution de la valeur par defaut
155 
156  // Closing the graphical output
157  // ----------------------------
158 
159  if ( (newgraph == 2) || (newgraph == 3) ) {
160  cpgend() ;
161  }
162 
163 }
164 
165 
166 }
Cmp log10(const Cmp &)
Basis 10 logarithm.
Definition: cmp_math.C:322
void des_coef(const double *cf, int n, double pzero, const char *nomx, const char *nomy, const char *title, const char *device=0x0, int newgraph=3, int nxpage=1, int nypage=1)
Basic routine for drawing spectral coefficients.
Lorene prototypes.
Definition: app_hor.h:64