/[MITgcm]/MITgcm_contrib/gael/matlab_class/gcmfaces_misc/runmean.m
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Revision 1.1 - (hide annotations) (download)
Fri Mar 26 20:18:33 2010 UTC (15 years, 3 months ago) by gforget
Branch: MAIN
routines that compute running means

1 gforget 1.1 %this function does a running mean along dimension dim_cur,
2     %averaging over indices [-nb_cur:nb_cur]
3     %
4     function [field_out]=runmean(field_in,nb_cur,dim_cur);
5    
6     if nb_cur~=0
7    
8     size_cur=size(field_in);
9    
10     perm1to2=[1:length(size_cur)];
11     perm1to2=[dim_cur perm1to2(find(perm1to2~=dim_cur))];
12     perm2to1=[[1:dim_cur-1]+1 1 [dim_cur+1:length(size_cur)]];
13     size_cur2=size_cur(perm1to2);
14    
15     field_in2=permute(field_in,perm1to2);
16    
17     field_out2=zeros(size_cur2);
18     count_out2=zeros(size_cur2(1),2);
19     for tcur=-nb_cur:nb_cur
20     tmp1=[tcur:tcur-1+size_cur2(1)];
21     tmp2=find(tmp1>=1&tmp1<=size_cur2(1));
22     field_out2(tmp2,:)=field_out2(tmp2,:)+field_in2(tmp1(tmp2),:);
23     count_out2(tmp2,:)=count_out2(tmp2,:)+1;
24     end
25     for tcur=1:size_cur2(1);
26     field_out2(tcur,:)=field_out2(tcur,:)/count_out2(tcur);
27     end
28    
29     %field_out=field_in-permute(field_out2,perm2to1);
30     field_out=permute(field_out2,perm2to1);
31    
32     else
33     field_out=field_in;
34     end%if nb_cur~=0
35    
36    

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