主题:如何在给定的上下界范围内产生一定数量的随机数
jairq12
[专家分:0] 发布于 2010-09-29 15:58:00
情况如下 向量 x=(932.7,219.2,0.112,0.0054,0.51)
上界为1.5x;
下界为0.5x;
望高手指点,如何在这个上下界范围内产生n个5维随机向量??不胜感谢!
回复列表 (共29个回复)
11 楼
cgl_lgs [专家分:21040] 发布于 2010-10-01 08:54:00
樓主想用迭代法求特征矩陣?
12 楼
jairq12 [专家分:0] 发布于 2010-10-01 14:19:00
[quote]樓主想用迭代法求特征矩陣?[/quote]
没那么复杂啊,看上面的回复 ,就是产生一个n×5的矩阵,只是矩阵每列上的数要在一定范围内
13 楼
cgl_lgs [专家分:21040] 发布于 2010-10-02 00:10:00
那就用
http://bbs.pfan.cn/post-348377.html
提供的方法生成0.5-1.5之間的數,然后乘以已知向量并放到矩陣中就行了。
沒什么難的。
14 楼
jairq12 [专家分:0] 发布于 2010-10-02 23:50:00
[quote]那就用
http://bbs.pfan.cn/post-348377.html
提供的方法生成0.5-1.5之間的數,然后乘以已知向量并放到矩陣中就行了。
沒什么難的。[/quote]
非常感谢 根据您的提示 参考大家的意见,写了这个程序
program main
implicit none
integer i,j,num
real::x
real(kind=8),dimension(21,7)::c
real(kind=8),dimension(31,7)::a
real(kind=8),dimension(6)::tmp
real(kind=8),dimension(5)::ub,lb
open(10,file='1.txt',status='old')
!数据读入
do i=1,31
read(10,*) (a(i,j),j=1,7)
enddo
!数据排序
do i=1,30
do j=i+1,31
if (a(i,7)>a(j,7)) then
tmp(:) = a(j,2:7)
a(j,2:7) = a(i,2:7)
a(i,2:7) =tmp(:)
endif
enddo
enddo
!以最小值为基准设置上下界输出响应面
do j=1,5
ub(j)=[color=FF00FF]3.50[/color]*a(1,j+1)
lb(j)=0.50*a(1,j+1)
enddo
num=0
do i=1,21
if((a(i,2)<=ub(1).and.a(i,2)>=lb(1)).and.(a(i,3)<=ub(2).and.a(i,3)>=lb (2)). and.(a(i,4)<=ub(3).and.a(i,4)>=lb(3)).and.(a(i,5)<=ub(4).and.a(i,5)>
=lb(4)).and.(a(i,6)<=ub(5).and.a(i,6)>=lb(5)) ) then
num=num+1
a(i,1)=num
c(i,:)=a(i,:)
endif
enddo
!判断样本点数量,不满足条件在一定范围内随机补足样本点
if(num>=21) then
print *,"落在范围内的样本点共有:",num, "个,响应面已经输出至rsm.txt中。"
open (1,file='rsm.txt')
do i=1,num
write (1,'(7f10.4)') (c(i,j),j=1,7)
enddo
else
open (1,file='rsm.txt')
call random_seed ()
do j=1,5
do i=num+1,21
call random_number(x)
x=lb(j)+(ub(j)-lb(j))*x
c(i,1)=i
c(i,j+1)=x
enddo
enddo
endif
!输出
open (1,file='rsm.txt')
do i=1,num
write (1,'(7f10.4)') (c(i,j),j=1,7)
enddo
do i=num+1,21
write (1,'(7f10.4)') (c(i,j),j=1,6)
enddo
end program
程序可以运行,但输出的数据显示有问题,有的行直接没有数据,如下
1.0000 932.7000 219.2000 .1120 .0054 .5100 472.6800
2.0000 945.1000 282.7000 .3680 .0123 .5900 1004.5300
3.0000 982.3000 342.7000 .2970 .0169 .6400 1575.2600
.0000 .0000 .0000 .0000 .0000 .0000 .0000
.0000 .0000 .0000 .0000 .0000 .0000 .0000
4.0000 882.6000 236.1000 .0810 .0087 1.4300 3845.1300
5.0000 918.8000 317.1000 .1460 .0088 .8300 4219.6500
6.0000 875.1000 744.0000 .2300 .0111 1.1300 4458.9800
7.0000 1015.9000 539.7000 .1600 .0148 1.0500 4604.1200
8.0000 921.6000 373.4000 .2030 .0051 1.7000 4777.0200
9.0000 852.2000 690.9000 .0640 .0120 1.2000 5590.5500
.0000 .0000 .0000 .0000 .0000 .0000 .0000
13.0000 2445.6272 272.1326 .3026 .0158 .8536
14.0000 1023.2697 551.5659 .1099 .0136 1.1256
15.0000 2192.2986 382.9038 .3057 .0187 1.3922
16.0000 3106.4814 644.9177 .0754 .0107 1.4018
17.0000 2780.2729 695.0966 .3652 .0183 .5610
18.0000 1280.0403 280.6323 .1315 .0137 1.4805
19.0000 1182.2007 498.7820 .0979 .0170 .6680
20.0000 1556.0428 656.0637 .3391 .0041 1.3995
21.0000 2343.5508 148.7628 .3558 .0045 .4997
但如果将[color=FF00FF]ub(j)=3.50*a(1,j+1)[/color]改成 [color=00FFFF]ub(j)=1.50*a(1,j+1),[/color]输出就正常了,如下
1.0000 932.7000 219.2000 .1120 .0054 .5100 472.6800
:
:
:
21.0000 699.5832 164.7280 .0703 .0079 .4505
不知这是怎么回事?请高手指点,不胜感谢啊 !
15 楼
jairq12 [专家分:0] 发布于 2010-10-03 00:11:00
“1.txt”数据
1 991.2 946.1 0.05 0.0042 1.64 9126.48
2 958.1 847.7 0.287 0.0095 0.77 6039.77
3 918.8 317.1 0.146 0.0088 0.83 4219.65
4 982.3 342.7 0.297 0.0169 0.64 1575.26
5 893.9 465.2 0.322 0.0074 1.13 6777.57
6 1010.9 1098.6 0.127 0.0062 0.58 5732.95
7 975.9 457.3 0.256 0.0132 1.61 8315.95
8 954.6 420.7 0.399 0.003 0.92 3603.71
9 921.6 373.4 0.203 0.0051 1.7 4777.02
10 945.1 282.7 0.368 0.0123 0.59 1004.53
11 905 509 0.391 0.0151 1.03 6937.29
12 941 572.1 0.105 0.0129 1.83 6377.54
13 891.3 593.2 0.271 0.003 1.57 6608.31
14 965.3 803.9 0.332 0.0079 0.76 5737.63
15 1032.4 996.4 0.377 0.0071 1.36 5761.89
16 838.6 914.2 0.306 0.0139 1.9 7357.7
17 932.7 219.2 0.112 0.0054 0.51 472.68
18 858.4 1020 0.41 0.0045 1.33 3265.48
19 1015.9 539.7 0.16 0.0148 1.05 4604.12
20 1028.4 780.2 0.193 0.0162 1.75 6996.73
21 875.1 744 0.23 0.0111 1.13 4458.98
22 882.6 236.1 0.081 0.0087 1.43 3845.13
23 852.2 690.9 0.064 0.012 1.2 5590.55
24 986.1 1137.6 0.343 0.0037 0.96 7566.53
25 1000.7 1116.7 0.142 0.0068 1.49 7511.25
26 864.5 1065.4 0.353 0.0103 1.23 7305.63
27 928.8 1172.9 0.218 0.0021 1.79 6514.74
28 842.5 640.7 0.179 0.016 0.87 6334.68
29 872.8 886.1 0.207 0.0112 0.7 6252.02
30 1003.5 653.5 0.098 0.0142 1.31 6476.46
31 906.3 814.1 0.243 0.0101 1.53 8062.55
16 楼
jstzhurj [专家分:4680] 发布于 2010-10-03 08:42:00
!判断样本点数量,不满足条件在一定范围内随机补足样本点
!if(num>=21) then
print *,"落在范围内的样本点共有:",num, "个,响应面已经输出至rsm.txt中。"
这能执行吗?你的num<21!
17 楼
jstzhurj [专家分:4680] 发布于 2010-10-03 09:08:00
你有用的数组C并不是存储在前1-num中,按1-num输出,当然会出现很多0。
18 楼
jstzhurj [专家分:4680] 发布于 2010-10-03 09:46:00
看了一下你的程序,一个总体印象有点乱,根据你的意思修改如下:
program main
implicit none
integer::i,j,num
real::x
real(kind=8),dimension(21,6)::c
real(kind=8),dimension(31,7)::a
real(kind=8),dimension(6)::tmp
real(kind=8),dimension(5)::ub,lb
open(10,file='1.txt',status='old')
open (1,file='rsm.txt')
!数据读入
do i=1,31
read(10,*,end=100) (a(i,j),j=1,7)
enddo
100 close(10)
!数据排序
do i=1,30
do j=i+1,31
if (a(i,7)>a(j,7)) then
tmp(:) = a(j,2:7)
a(j,2:7) = a(i,2:7)
a(i,2:7) =tmp(:)
endif
enddo
enddo
!以最小值为基准设置上下界输出响应面
do j=1,5
ub(j)=3.50*a(1,j+1)
lb(j)=0.50*a(1,j+1)
enddo
!判断把满足条件的输出
num=0
do i=1,21
if((a(i,2)<=ub(1).and.a(i,2)>=lb(1)).and.(a(i,3)<=ub(2).and.a(i,3)>=lb(2)).and.(a(i,4)<=ub(3)&
.and.a(i,4)>=lb(3)).and.(a(i,5)<=ub(4).and.a(i,5)>=lb(4)).and.(a(i,6)<=ub(5).and.a(i,6)>=lb(5)) ) then
num=num+1
c(num,1:6)=a(i,2:7)
write(1,'(i4,6f12.4)')num,(c(num,j),j=1,6)
endif
enddo
!补足剩余数据
call random_seed ()
do i=num+1,21
do j=1,5
call random_number(x)
x=lb(j)+(ub(j)-lb(j))*x
c(i,j)=x
enddo
write (1,'(i4,5f12.4)') i,(c(i,j),j=1,5)
enddo
write(*,'(a,i4,a)') "落在范围内的样本点共有:",num, "个,响应面已经输出至rsm.txt中。"
write(*,'(a,i4,a)') "剩余",21-num,"个已补足。"
end program
至此,你的 http://bbs.pfan.cn/post-350201.html 已不再是问题
19 楼
jstzhurj [专家分:4680] 发布于 2010-10-03 10:27:00
[quote][quote]那就用
http://bbs.pfan.cn/post-348377.html
提供的方法生成0.5-1.5之間的數,然后乘以已知向量并放到矩陣中就行了。
沒什么難的。[/quote]
非常感谢 根据您的提示 参考大家的意见,写了这个程序
program main
implicit none
integer i,j,num
real::x
real(kind=8),dimension(21,7)::c
real(kind=8),dimension(31,7)::a
real(kind=8),dimension(6)::tmp
real(kind=8),dimension(5)::ub,lb
open(10,file='1.txt',status='old')
!数据读入
do i=1,31
read(10,*) (a(i,j),j=1,7)
enddo
!数据排序
do i=1,30
do j=i+1,31
if (a(i,7)>a(j,7)) then
tmp(:) = a(j,2:7)
a(j,2:7) = a(i,2:7)
a(i,2:7) =tmp(:)
endif
enddo
enddo
!以最小值为基准设置上下界输出响应面
do j=1,5
ub(j)=[color=FF00FF]3.50[/color]*a(1,j+1)
lb(j)=0.50*a(1,j+1)
enddo
num=0
do i=1,21
if((a(i,2)<=ub(1).and.a(i,2)>=lb(1)).and.(a(i,3)<=ub(2).and.a(i,3)>=lb (2)). and.(a(i,4)<=ub(3).and.a(i,4)>=lb(3)).and.(a(i,5)<=ub(4).and.a(i,5)>
=lb(4)).and.(a(i,6)<=ub(5).and.a(i,6)>=lb(5)) ) then
num=num+1
a(i,1)=num
c(i,:)=a(i,:)
endif
enddo
!判断样本点数量,不满足条件在一定范围内随机补足样本点
if(num>=21) then
print *,"落在范围内的样本点共有:",num, "个,响应面已经输出至rsm.txt中。"
open (1,file='rsm.txt')
do i=1,num
write (1,'(7f10.4)') (c(i,j),j=1,7)
enddo
else
open (1,file='rsm.txt')
call random_seed ()
do j=1,5
do i=num+1,21
call random_number(x)
x=lb(j)+(ub(j)-lb(j))*x
c(i,1)=i
c(i,j+1)=x
enddo
enddo
endif
!输出
open (1,file='rsm.txt')
do i=1,num
write (1,'(7f10.4)') (c(i,j),j=1,7)
enddo
do i=num+1,21
write (1,'(7f10.4)') (c(i,j),j=1,6)
enddo
end program
程序可以运行,但输出的数据显示有问题,有的行直接没有数据,如下
1.0000 932.7000 219.2000 .1120 .0054 .5100 472.6800
2.0000 945.1000 282.7000 .3680 .0123 .5900 1004.5300
3.0000 982.3000 342.7000 .2970 .0169 .6400 1575.2600
.0000 .0000 .0000 .0000 .0000 .0000 .0000
.0000 .0000 .0000 .0000 .0000 .0000 .0000
4.0000 882.6000 236.1000 .0810 .0087 1.4300 3845.1300
5.0000 918.8000 317.1000 .1460 .0088 .8300 4219.6500
6.0000 875.1000 744.0000 .2300 .0111 1.1300 4458.9800
7.0000 1015.9000 539.7000 .1600 .0148 1.0500 4604.1200
8.0000 921.6000 373.4000 .2030 .0051 1.7000 4777.0200
9.0000 852.2000 690.9000 .0640 .0120 1.2000 5590.5500
.0000 .0000 .0000 .0000 .0000 .0000 .0000
13.0000 2445.6272 272.1326 .3026 .0158 .8536
14.0000 1023.2697 551.5659 .1099 .0136 1.1256
15.0000 2192.2986 382.9038 .3057 .0187 1.3922
16.0000 3106.4814 644.9177 .0754 .0107 1.4018
17.0000 2780.2729 695.0966 .3652 .0183 .5610
18.0000 1280.0403 280.6323 .1315 .0137 1.4805
19.0000 1182.2007 498.7820 .0979 .0170 .6680
20.0000 1556.0428 656.0637 .3391 .0041 1.3995
21.0000 2343.5508 148.7628 .3558 .0045 .4997
但如果将[color=FF00FF]ub(j)=3.50*a(1,j+1)[/color]改成 [color=00FFFF]ub(j)=1.50*a(1,j+1),[/color]输出就正常了,如下
1.0000 932.7000 219.2000 .1120 .0054 .5100 472.6800
:
:
:
21.0000 699.5832 164.7280 .0703 .0079 .4505
不知这是怎么回事?请高手指点,不胜感谢啊 ![/quote]
保留你原来的混乱,作了最小改动:
program main
implicit none
integer i,j,num
real::x
real(kind=8),dimension(21,7)::c
real(kind=8),dimension(31,7)::a
real(kind=8),dimension(6)::tmp
real(kind=8),dimension(5)::ub,lb
open(10,file='1.txt',status='old')
!数据读入
do i=1,31
read(10,*) (a(i,j),j=1,7)
enddo
!数据排序
do i=1,30
do j=i+1,31
if (a(i,7)>a(j,7)) then
tmp(:) = a(j,2:7)
a(j,2:7) = a(i,2:7)
a(i,2:7) =tmp(:)
endif
enddo
enddo
!以最小值为基准设置上下界输出响应面
do j=1,5
ub(j)=3.50*a(1,j+1)
lb(j)=0.50*a(1,j+1)
enddo
num=0
do i=1,21
if((a(i,2)<=ub(1).and.a(i,2)>=lb(1)).and.(a(i,3)<=ub(2).and.a(i,3)>=lb(2)).and.(a(i,4)<=ub(3).and.a(i,4)>=lb(3)).and.(a(i,5)<=ub(4).and.a(i,5)>=lb(4)).and.(a(i,6)<=ub(5).and.a(i,6)>=lb(5)) ) then
num=num+1
a(i,1)=num
c(num,:)=a(i,:)
endif
enddo
!判断样本点数量,不满足条件在一定范围内随机补足样本点
if(num>=21) then
print *,"落在范围内的样本点共有:",num, "个,响应面已经输出至rsm.txt中。"
open (1,file='rsm.txt')
do i=1,num
write (1,'(7f10.4)') (c(i,j),j=1,7)
enddo
else
open (1,file='rsm.txt')
call random_seed ()
do j=1,5
do i=num+1,21
call random_number(x)
x=lb(j)+(ub(j)-lb(j))*x
c(i,1)=i
c(i,j+1)=x
enddo
enddo
endif
!输出
open (1,file='rsm.txt')
do i=1,num
write (1,'(7f12.4)') (c(i,j),j=1,7)
enddo
do i=num+1,21
write (1,'(7f12.4)') (c(i,j),j=1,6)
enddo
end program
已不依赖于ub(j)=3.50*a(1,j+1)或 ub(j)=1.50*a(1,j+1),。没有0输出。
20 楼
jairq12 [专家分:0] 发布于 2010-10-03 13:39:00
[quote][quote][quote]那就用
http://bbs.pfan.cn/post-348377.html
提供的方法生成0.5-1.5之間的數,然后乘以已知向量并放到矩陣中就行了。
沒什么難的。[/quote]
非常感谢 根据您的提示 参考大家的意见,写了这个程序
program main
implicit none
integer i,j,num
real::x
real(kind=8),dimension(21,7)::c
real(kind=8),dimension(31,7)::a
real(kind=8),dimension(6)::tmp
real(kind=8),dimension(5)::ub,lb
open(10,file='1.txt',status='old')
!数据读入
do i=1,31
read(10,*) (a(i,j),j=1,7)
enddo
!数据排序
do i=1,30
do j=i+1,31
if (a(i,7)>a(j,7)) then
tmp(:) = a(j,2:7)
a(j,2:7) = a(i,2:7)
a(i,2:7) =tmp(:)
endif
enddo
enddo
!以最小值为基准设置上下界输出响应面
do j=1,5
ub(j)=[color=FF00FF]3.50[/color]*a(1,j+1)
lb(j)=0.50*a(1,j+1)
enddo
num=0
do i=1,21
if((a(i,2)<=ub(1).and.a(i,2)>=lb(1)).and.(a(i,3)<=ub(2).and.a(i,3)>=lb (2)). and.(a(i,4)<=ub(3).and.a(i,4)>=lb(3)).and.(a(i,5)<=ub(4).and.a(i,5)>
=lb(4)).and.(a(i,6)<=ub(5).and.a(i,6)>=lb(5)) ) then
num=num+1
a(i,1)=num
c(i,:)=a(i,:)
endif
enddo
!判断样本点数量,不满足条件在一定范围内随机补足样本点
if(num>=21) then
print *,"落在范围内的样本点共有:",num, "个,响应面已经输出至rsm.txt中。"
open (1,file='rsm.txt')
do i=1,num
write (1,'(7f10.4)') (c(i,j),j=1,7)
enddo
else
open (1,file='rsm.txt')
call random_seed ()
do j=1,5
do i=num+1,21
call random_number(x)
x=lb(j)+(ub(j)-lb(j))*x
c(i,1)=i
c(i,j+1)=x
enddo
enddo
endif
!输出
open (1,file='rsm.txt')
do i=1,num
write (1,'(7f10.4)') (c(i,j),j=1,7)
enddo
do i=num+1,21
write (1,'(7f10.4)') (c(i,j),j=1,6)
enddo
end program
程序可以运行,但输出的数据显示有问题,有的行直接没有数据,如下
1.0000 932.7000 219.2000 .1120 .0054 .5100 472.6800
2.0000 945.1000 282.7000 .3680 .0123 .5900 1004.5300
3.0000 982.3000 342.7000 .2970 .0169 .6400 1575.2600
.0000 .0000 .0000 .0000 .0000 .0000 .0000
.0000 .0000 .0000 .0000 .0000 .0000 .0000
4.0000 882.6000 236.1000 .0810 .0087 1.4300 3845.1300
5.0000 918.8000 317.1000 .1460 .0088 .8300 4219.6500
6.0000 875.1000 744.0000 .2300 .0111 1.1300 4458.9800
7.0000 1015.9000 539.7000 .1600 .0148 1.0500 4604.1200
8.0000 921.6000 373.4000 .2030 .0051 1.7000 4777.0200
9.0000 852.2000 690.9000 .0640 .0120 1.2000 5590.5500
.0000 .0000 .0000 .0000 .0000 .0000 .0000
13.0000 2445.6272 272.1326 .3026 .0158 .8536
14.0000 1023.2697 551.5659 .1099 .0136 1.1256
15.0000 2192.2986 382.9038 .3057 .0187 1.3922
16.0000 3106.4814 644.9177 .0754 .0107 1.4018
17.0000 2780.2729 695.0966 .3652 .0183 .5610
18.0000 1280.0403 280.6323 .1315 .0137 1.4805
19.0000 1182.2007 498.7820 .0979 .0170 .6680
20.0000 1556.0428 656.0637 .3391 .0041 1.3995
21.0000 2343.5508 148.7628 .3558 .0045 .4997
但如果将[color=FF00FF]ub(j)=3.50*a(1,j+1)[/color]改成 [color=00FFFF]ub(j)=1.50*a(1,j+1),[/color]输出就正常了,如下
1.0000 932.7000 219.2000 .1120 .0054 .5100 472.6800
:
:
:
21.0000 699.5832 164.7280 .0703 .0079 .4505
不知这是怎么回事?请高手指点,不胜感谢啊 ![/quote]
保留你原来的混乱,作了最小改动:
program main
implicit none
integer i,j,num
real::x
real(kind=8),dimension(21,7)::c
real(kind=8),dimension(31,7)::a
real(kind=8),dimension(6)::tmp
real(kind=8),dimension(5)::ub,lb
open(10,file='1.txt',status='old')
!数据读入
do i=1,31
read(10,*) (a(i,j),j=1,7)
enddo
!数据排序
do i=1,30
do j=i+1,31
if (a(i,7)>a(j,7)) then
tmp(:) = a(j,2:7)
a(j,2:7) = a(i,2:7)
a(i,2:7) =tmp(:)
endif
enddo
enddo
!以最小值为基准设置上下界输出响应面
do j=1,5
ub(j)=3.50*a(1,j+1)
lb(j)=0.50*a(1,j+1)
enddo
num=0
do i=1,21
if((a(i,2)<=ub(1).and.a(i,2)>=lb(1)).and.(a(i,3)<=ub(2).and.a(i,3)>=lb(2)).and.(a(i,4)<=ub(3).and.a(i,4)>=lb(3)).and.(a(i,5)<=ub(4).and.a(i,5)>=lb(4)).and.(a(i,6)<=ub(5).and.a(i,6)>=lb(5)) ) then
num=num+1
a(i,1)=num
c(num,:)=a(i,:)
endif
enddo
!判断样本点数量,不满足条件在一定范围内随机补足样本点
if(num>=21) then
print *,"落在范围内的样本点共有:",num, "个,响应面已经输出至rsm.txt中。"
open (1,file='rsm.txt')
do i=1,num
write (1,'(7f10.4)') (c(i,j),j=1,7)
enddo
else
open (1,file='rsm.txt')
call random_seed ()
do j=1,5
do i=num+1,21
call random_number(x)
x=lb(j)+(ub(j)-lb(j))*x
c(i,1)=i
c(i,j+1)=x
enddo
enddo
endif
!输出
open (1,file='rsm.txt')
do i=1,num
write (1,'(7f12.4)') (c(i,j),j=1,7)
enddo
do i=num+1,21
write (1,'(7f12.4)') (c(i,j),j=1,6)
enddo
end program
已不依赖于ub(j)=3.50*a(1,j+1)或 ub(j)=1.50*a(1,j+1),。没有0输出。[/quote]
非常感谢您的耐心指导,对我们初学者来说 遇到您这样的好老师 真是一大幸事!后面还有一部分程序,自己正在琢磨中,到时候写出来还请老师指导。感谢感谢实在感谢。
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