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
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) 2010 - INRIA - Serge STEER
// This file must be used under the terms of the CeCILL.
// This source file is licensed as described in the file COPYING, which
// you should have received as part of this distribution. The terms
// are also available at
// http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt
function sgrid(varargin)
// sgrid(["new",] [,Z,Wn [,colors]])
// sgrid(Z,Wn [,"new"] [,colors])
defaultcolors=[4 12];
defaultbounds=[-1.6,-1.6;0,1.6];
rhs=argn(2)
new=%f
if rhs>=1 then
if type(varargin(1))==10 then
if varargin(1)<>"new" then
error(msprintf(_("%s: Wrong value for input argument #%d: ''%s'' expected.\n"),"sgrid",1,"new"))
end
varargin(1)=null()
rhs=rhs-1
new=%t
end
end
if rhs>=3 then
if type(varargin(3))==10 then
if varargin(3)<>"new" then
error(msprintf(_("%s: Wrong value for input argument #%d: ''%s'' expected.\n"),"sgrid",3,"new"))
end
varargin(3)=null()
rhs=rhs-1
new=%t
end
end
defaultwn=%f;
defaultzeta=[0 0.16 0.34 0.5 0.64 0.76 0.86 0.94 0.985 1]
select rhs
case 0 then //sgrid() or sgrid("new")
defaultwn=%t
zeta = defaultzeta
colors = defaultcolors
case 2 then
zeta = varargin(1)
if type(zeta)<>1|~isreal(zeta) then
error(msprintf(_("%s: Wrong type for input argument #%d : real floating point array expected\n"),"sgrid",1));
end
wn = varargin(2)
if type(wn)<>1|~isreal(wn) then
error(msprintf(_("%s: Wrong type for input argument #%d : real floating point array expected\n"),"sgrid",2));
end
colors = defaultcolors
case 3 then
zeta = varargin(1)
if type(zeta)<>1|~isreal(zeta) then
error(msprintf(_("%s: Wrong type for input argument #%d : real floating point array expected\n"),"sgrid",1));
end
wn = varargin(2)
if type(wn)<>1|~isreal(wn) then
error(msprintf(_("%s: Wrong type for input argument #%d : real floating point array expected\n"),"sgrid",2));
end
colors = varargin(3)
if type(colors)<>1|~isreal(colors) then
error(msprintf(_("%s: Wrong type for input argument #%d : real floating point array expected\n"),"sgrid",3));
end
if size(colors,"*")==1 then colors=colors*ones(1,2),end
end
zeta=zeta(zeta>=0&zeta<=1)
fig=gcf();
immediate_drawing=fig.immediate_drawing;
fig.immediate_drawing="off";
axes=gca();
if new&axes.children<>[] then
delete(axes.children)
end
nc=size(axes.children,"*")
if nc==0 then
axes.data_bounds=defaultbounds
axes.axes_visible="on";
ax.box="on";
else
axes.data_bounds=[min(defaultbounds(1,:),axes.data_bounds(1,:));
max(defaultbounds(2,:),axes.data_bounds(2,:))];
end
if axes.tight_limits=="off"&axes.auto_ticks(1)=="on" then
xmin=axes.x_ticks.locations(1)
xmax=axes.x_ticks.locations($)
else
xmin=axes.data_bounds(1,1)
xmax=axes.data_bounds(2,1)
end
if axes.tight_limits=="off"&axes.auto_ticks(2)=="on" then
ymin=axes.y_ticks.locations(1)
ymax=axes.y_ticks.locations($)
else
ymin=axes.data_bounds(1,2)
ymax=axes.data_bounds(2,2)
end
//iso natural frequency curves
if defaultwn then
rmax=sqrt(min(xmin^2+ymin^2,xmin^2+ymax^2))
rmax=floor(10*rmax)/10;
[xi,xa,np]=graduate(0.2,rmax,8,12)
wn=linspace(xi,xa,np)
end
wn=wn(wn>=0)
t=linspace(%pi/2,1.5*%pi,200)
chart_handles=[]
for i=1:size(wn,"*")
xpoly(wn(i)*cos(t),wn(i)*sin(t))
ec=gce();
ec.display_function = "formatSgridFreqTip";
ec.display_function_data = wn(i);
ec.foreground=colors(1),
ec.line_style=7;
ec.clip_state="clipgrf";
lab=msprintf("%.2g",wn(i))
r=xstringl(0,wn(i),lab)
if %t then
xstring(-r(3),wn(i),lab)
es1=gce();
es1.font_foreground=colors(1),
es1.clip_state="clipgrf";
xstring(-r(3),-wn(i)-r(4),lab)
es2=gce();
es2.font_foreground=colors(1),
es2.clip_state="clipgrf";
e=glue([es2 es1 ec])
else
xstring(-wn(i)-r(3),0,lab)
es1=gce();
es1.font_foreground=colors(1),
es1.clip_state="clipgrf";
e=glue([es1 ec]);
end
chart_handles=[e chart_handles]
end
//iso damping factor curves
angl=acos(zeta)
for i=1:size(zeta,"*")
lab=string(zeta(i))
rect=xstringl(0,0,lab)
sa=sin(angl(i));ca=cos(angl(i))
if sa==0 then sa=%eps;end
if ca==0 then ca=%eps;end
r=min(-ymin/sa,-xmin/ca)
xpoly([0 -r*ca],[0 -r*sa])
ec=gce();
ec.display_function = "formatSgridDampingTip";
ec.display_function_data = zeta(i);
ec.foreground=colors(2),
ec.line_style=7;
ec.clip_state="clipgrf";
if -ymin/sa<-xmin/ca
r1=r-rect(4)/sa
xstring(-r1*ca-rect(3),-r1*sa,lab)
else
xstring(-r*ca+0.02*rect(3),-r*sa,lab)
end
es=gce();
es.font_foreground=colors(2),
es.clip_state="clipgrf";
chart_handles=[glue([es ec]),chart_handles]
r=min(ymax/sa,-xmin/ca)
xpoly([0 -r*ca],[0 r*sa])
ec=gce();
ec.display_function = "formatSgridDampingTip";
ec.display_function_data = zeta(i);
ec.foreground=colors(2),
ec.line_style=7;
ec.clip_state="clipgrf";
if ymax/sa<-xmin/ca then
xstring(-r*ca-rect(3),r*sa-rect(4),lab)
else
xstring(-r*ca,r*sa,lab)
end
es=gce();
es.font_foreground=colors(2),
es.clip_state="clipgrf";
chart_handles=[glue([es ec]),chart_handles]
end
chart_handles=glue(chart_handles)
//reorder axes children to make chart drawn before the black previously
// drawn curves if any
for k=1:nc
swap_handles(axes.children(k),axes.children(k+1))
end
fig.immediate_drawing=immediate_drawing;
show_window()
endfunction
|
