主题:急改程序
以前从没接触过fortran,看不懂,谁能给解释一下,好让小弟试着用C或者matlab实现同样的功能啊!谢谢先了!!
程序如下:
subroutine seasonality(mx,my,v1,v2,v3,v4,fai0,grdy,suv)
parameter(ma=1,mb=1)
dimension v1(mx,my,2),v2(mx,my,2),v3(mx,my,2),v4(mx,my,2)
dimension suv(mx,my)
dimension vw1((-ma+1):(mx+ma),(-mb+1):(my+mb),2) !work array
dimension vw2((-ma+1):(mx+ma),(-mb+1):(my+mb),2) !work array
dimension vw3((-ma+1):(mx+ma),(-mb+1):(my+mb),2) !work array
dimension vw4((-ma+1):(mx+ma),(-mb+1):(my+mb),2) !work array
dimension uv1((-ma+1):(mx+ma),(-mb+1):(my+mb)) !work array
dimension uv2((-ma+1):(mx+ma),(-mb+1):(my+mb)) !work array
mc=-ma+1
md=-mb+1
do k=1,2
call processing(mx,my,ma,mb,fai0,grdy,v1(1,1,k),vw1(mc,md,k))
call processing(mx,my,ma,mb,fai0,grdy,v2(1,1,k),vw2(mc,md,k))
call processing(mx,my,ma,mb,fai0,grdy,v3(1,1,k),vw3(mc,md,k))
call processing(mx,my,ma,mb,fai0,grdy,v4(1,1,k),vw4(mc,md,k))
enddo
do 10 j=-mb+1,my+mb
do 10 i=-ma+1,mx+ma
a1=(vw1(i,j,1)-vw2(i,j,1))**2
b1=(vw1(i,j,2)-vw2(i,j,2))**2
uv1(i,j)=a1+b1
a2=(vw3(i,j,1)+vw4(i,j,1))**2
b2=(vw3(i,j,2)+vw4(i,j,2))**2
uv2(i,j)=a2+b2
10 continue
do 20 j=1,my
do 20 i=1,mx
su1=4.*uv1(i,j)+uv1(i-1,j)+uv1(i+1,j)+uv1(i,j-1)+uv1(i,j+1)
su2=4.*uv2(i,j)+uv2(i-1,j)+uv2(i+1,j)+uv2(i,j-1)+uv2(i,j+1)
suv(i,j)=2.*sqrt(su1)/sqrt(su2)
20 continue
return
end
程序如下:
subroutine seasonality(mx,my,v1,v2,v3,v4,fai0,grdy,suv)
parameter(ma=1,mb=1)
dimension v1(mx,my,2),v2(mx,my,2),v3(mx,my,2),v4(mx,my,2)
dimension suv(mx,my)
dimension vw1((-ma+1):(mx+ma),(-mb+1):(my+mb),2) !work array
dimension vw2((-ma+1):(mx+ma),(-mb+1):(my+mb),2) !work array
dimension vw3((-ma+1):(mx+ma),(-mb+1):(my+mb),2) !work array
dimension vw4((-ma+1):(mx+ma),(-mb+1):(my+mb),2) !work array
dimension uv1((-ma+1):(mx+ma),(-mb+1):(my+mb)) !work array
dimension uv2((-ma+1):(mx+ma),(-mb+1):(my+mb)) !work array
mc=-ma+1
md=-mb+1
do k=1,2
call processing(mx,my,ma,mb,fai0,grdy,v1(1,1,k),vw1(mc,md,k))
call processing(mx,my,ma,mb,fai0,grdy,v2(1,1,k),vw2(mc,md,k))
call processing(mx,my,ma,mb,fai0,grdy,v3(1,1,k),vw3(mc,md,k))
call processing(mx,my,ma,mb,fai0,grdy,v4(1,1,k),vw4(mc,md,k))
enddo
do 10 j=-mb+1,my+mb
do 10 i=-ma+1,mx+ma
a1=(vw1(i,j,1)-vw2(i,j,1))**2
b1=(vw1(i,j,2)-vw2(i,j,2))**2
uv1(i,j)=a1+b1
a2=(vw3(i,j,1)+vw4(i,j,1))**2
b2=(vw3(i,j,2)+vw4(i,j,2))**2
uv2(i,j)=a2+b2
10 continue
do 20 j=1,my
do 20 i=1,mx
su1=4.*uv1(i,j)+uv1(i-1,j)+uv1(i+1,j)+uv1(i,j-1)+uv1(i,j+1)
su2=4.*uv2(i,j)+uv2(i-1,j)+uv2(i+1,j)+uv2(i,j-1)+uv2(i,j+1)
suv(i,j)=2.*sqrt(su1)/sqrt(su2)
20 continue
return
end