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 
29 
30 
31 /*
32  * $Id: des_coef.C,v 1.6 2016/12/05 16:18:06 j_novak Exp $
33  * $Log: des_coef.C,v $
34  * Revision 1.6 2016/12/05 16:18:06 j_novak
35  * Suppression of some global variables (file names, loch, ...) to prevent redefinitions
36  *
37  * Revision 1.5 2014/10/13 08:53:21 j_novak
38  * Lorene classes and functions now belong to the namespace Lorene.
39  *
40  * Revision 1.4 2014/10/06 15:16:04 j_novak
41  * Modified #include directives to use c++ syntax.
42  *
43  * Revision 1.3 2008/08/19 06:42:00 j_novak
44  * Minor modifications to avoid warnings with gcc 4.3. Most of them concern
45  * cast-type operations, and constant strings that must be defined as const char*
46  *
47  * Revision 1.2 2002/10/16 14:36:57 j_novak
48  * Reorganization of #include instructions of standard C++, in order to
49  * use experimental version 3 of gcc.
50  *
51  * Revision 1.1.1.1 2001/11/20 15:19:29 e_gourgoulhon
52  * LORENE
53  *
54  * Revision 1.2 1999/12/20 10:57:17 eric
55  * Modif commentaires.
56  *
57  * Revision 1.1 1999/12/10 12:14:37 eric
58  * Initial revision
59  *
60  *
61  * $Header: /cvsroot/Lorene/C++/Source/Non_class_members/Graphics/des_coef.C,v 1.6 2016/12/05 16:18:06 j_novak Exp $
62  *
63  */
64 
65 
66 // C++ headers:
67 #include"headcpp.h"
68 
69 // C headers:
70 #include <cmath>
71 
72 // PGPLOT headers:
73 #include <cpgplot.h>
74 
75 namespace Lorene {
76 //******************************************************************************
77 
78 void des_coef(const double* cf, int n, double pzero,
79  const char* nomx, const char* nomy, const char* title, const char* device,
80  int newgraph, int nxpage, int nypage) {
81 
82  float xdes[2], ydes[2] ;
83 
84  double pzerol = log10(pzero) ;
85  ydes[0] = float(pzerol) ;
86 
87  // Figure frame
88  // ------------
89 
90  double xmin = - 1 ;
91  double xmax = n ;
92  double ymin = pzerol ;
93  double ymax = pzerol ;
94 
95  for (int i=0; i<n; i++) {
96  double yl = log10(fabs(cf[i])) ;
97  if ( yl > ymax ) ymax = yl ;
98  }
99  double yamp = ymax - ymin ;
100  ymax = ymax + 0.05 * yamp ;
101  ymin = ymin - 0.05 * yamp ;
102 
103  if (ymax <= pzerol) ymax = 2*pzerol ; // assure que le cadre existe
104 
105  // Graphics display
106  // ----------------
107 
108  if ( (newgraph == 1) || (newgraph == 3) ) {
109 
110  if (device == 0x0) device = "?" ;
111 
112  int ier = cpgbeg(0, device, nxpage, nypage) ;
113  if (ier != 1) {
114  cout << "des_coef: problem in opening PGPLOT display !" << endl ;
115  }
116 
117  }
118 
119  // Taille des caracteres:
120  float size = float(1.3) ;
121  cpgsch(size) ;
122 
123  // Epaisseur des traits:
124  int lepais = 1 ;
125  cpgslw(lepais) ;
126 
127  // Fonte axes: caracteres romains:
128  cpgscf(2) ;
129 
130  // Figure frame
131  float xmin1 = float(xmin) ;
132  float xmax1 = float(xmax) ;
133  float ymin1 = float(ymin) ;
134  float ymax1 = float(ymax) ;
135  cpgenv(xmin1, xmax1, ymin1, ymax1, 0, 0 ) ;
136  cpglab(nomx, nomy, title) ;
137 
138  // Drawing of vertical lines to represent the coefficients
139  for (int i=0; i<n; i++) {
140  int lstyle ;
141  xdes[0] = float( i ) ;
142  xdes[1] = xdes[0] ;
143  if ( fabs(cf[i]) < pzero ) {
144  ydes[1] = float(pzerol) ;
145  lstyle = 1 ;
146  }
147  else {
148  ydes[1] = float( log10(fabs(cf[i])) ) ;
149  if (cf[i] < 0) lstyle = 2 ;
150  else lstyle = 1 ;
151  }
152  cpgsls(lstyle) ; // line en trait plein (lstyle=1)
153  // ou pointilles (lstyle=2)
154  cpgline(2, xdes, ydes) ;
155  }
156 
157  cpgsls(1) ; // restitution de la valeur par defaut
158 
159  // Closing the graphical output
160  // ----------------------------
161 
162  if ( (newgraph == 2) || (newgraph == 3) ) {
163  cpgend() ;
164  }
165 
166 }
167 
168 
169 }
Lorene prototypes.
Definition: app_hor.h:67
void des_coef(const double *cf, int n, double pzero, const char *nomx, const char *nomy, const char *title, const char *device, int newgraph, int nxpage, int nypage)
Basic routine for drawing spectral coefficients.
Definition: des_coef.C:78
Cmp log10(const Cmp &)
Basis 10 logarithm.
Definition: cmp_math.C:325