1 |
gforget |
1.3 |
function [fld]=read_nctiles(fileName,fldName,varargin); |
2 |
gforget |
1.1 |
%usage: fld=read_nctiles(fileName); reads full field using fileName as field name |
3 |
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%usage: fld=read_nctiles(fileName,fldName); reads full field (all depths, all times) |
4 |
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%usage: fld=read_nctiles(fileName,fldName,tt); reads 3D or 2D field, at time index tt (all depths) |
5 |
gforget |
1.7 |
%usage: fld=read_nctiles(fileName,fldName,tt,kk); reads 3D field, at depth index(es) kk, at time index tt |
6 |
gforget |
1.1 |
|
7 |
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gcmfaces_global; |
8 |
gforget |
1.7 |
nz=length(mygrid.RC); |
9 |
gforget |
1.1 |
|
10 |
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if nargin==1; |
11 |
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tmp1=['/' fileName]; |
12 |
gforget |
1.6 |
tmp2=strfind(tmp1,filesep); |
13 |
gforget |
1.1 |
fldName=tmp1(tmp2(end)+1:end); |
14 |
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end; |
15 |
gforget |
1.7 |
if nargin>2; |
16 |
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tt=varargin{1}; |
17 |
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else; |
18 |
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tt=[]; |
19 |
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end; |
20 |
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if nargin>3; |
21 |
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kk=varargin{2}; |
22 |
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if min(kk)<1 | max(kk)>nz |
23 |
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error(['kk must be an integer between 1 and ' num2str(nz)]) |
24 |
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return |
25 |
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end |
26 |
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if length(kk)>1 |
27 |
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if ~isempty(find(diff(kk)~=1)) |
28 |
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error(['kk must be a contigous range of indices']) |
29 |
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return |
30 |
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end |
31 |
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end |
32 |
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else; |
33 |
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kk=[]; |
34 |
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end; |
35 |
gforget |
1.1 |
|
36 |
gforget |
1.5 |
%A) determine map of tile indices (if not already done) |
37 |
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38 |
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global nctiles; |
39 |
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40 |
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test1=isempty(nctiles); |
41 |
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test2=0; |
42 |
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if ~test1; |
43 |
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tmp1=dir([fileName '*']); |
44 |
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test2=(length(tmp1)~=length(nctiles.no)); |
45 |
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end; |
46 |
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47 |
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if test1|test2; |
48 |
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%build map of tile indices |
49 |
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if (length(dir([fileName '*']))==mygrid.nFaces); |
50 |
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nctiles.map=NaN*mygrid.XC; |
51 |
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for ff=1:mygrid.nFaces; nctiles.map{ff}(:)=ff; end; |
52 |
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else; |
53 |
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fileIn=sprintf('%s.%04d.nc',fileName,1); |
54 |
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nc=netcdf.open(fileIn,0); |
55 |
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vv = netcdf.inqVarID(nc,fldName); |
56 |
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[varname,xtype,dimids,natts]=netcdf.inqVar(nc,vv); |
57 |
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tileSize=zeros(1,2); |
58 |
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[tmp,tileSize(1)] = netcdf.inqDim(nc,dimids(1)); |
59 |
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[tmp,tileSize(2)] = netcdf.inqDim(nc,dimids(2)); |
60 |
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netcdf.close(nc); |
61 |
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nctiles.map=gcmfaces_loc_tile(tileSize(1),tileSize(2)); |
62 |
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end; |
63 |
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%determine tile list |
64 |
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nctiles.no=unique(convert2vector(nctiles.map)); |
65 |
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nctiles.no=nctiles.no(~isnan(nctiles.no)); |
66 |
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%determine location of each tile |
67 |
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for ff=1:length(nctiles.no); |
68 |
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for gg=1:mygrid.nFaces; |
69 |
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[tmpi,tmpj]=find(nctiles.map{gg}==ff); |
70 |
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if ~isempty(tmpi); |
71 |
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nctiles.f{ff}=gg; |
72 |
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nctiles.i{ff}=[min(tmpi(:)):max(tmpi(:))]; |
73 |
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nctiles.j{ff}=[min(tmpj(:)):max(tmpj(:))]; |
74 |
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end; |
75 |
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end; |
76 |
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end; |
77 |
gforget |
1.2 |
end; |
78 |
gforget |
1.1 |
|
79 |
gforget |
1.5 |
%B) the file read operation itself |
80 |
gforget |
1.1 |
|
81 |
gforget |
1.5 |
for ff=1:length(nctiles.no); |
82 |
gforget |
1.2 |
|
83 |
gforget |
1.5 |
%read one tile |
84 |
gforget |
1.2 |
fileIn=sprintf('%s.%04d.nc',fileName,ff); |
85 |
gforget |
1.1 |
nc=netcdf.open(fileIn,0); |
86 |
gforget |
1.5 |
|
87 |
gforget |
1.1 |
vv = netcdf.inqVarID(nc,fldName); |
88 |
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[varname,xtype,dimids,natts]=netcdf.inqVar(nc,vv); |
89 |
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|
90 |
gforget |
1.2 |
[dimname,siz(1)] = netcdf.inqDim(nc,dimids(1)); |
91 |
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[dimname,siz(2)] = netcdf.inqDim(nc,dimids(2)); |
92 |
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siz=[siz length(mygrid.RC)]; |
93 |
gforget |
1.1 |
|
94 |
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if ~isempty(tt); |
95 |
gforget |
1.4 |
t0=tt(1)-1; |
96 |
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nt=tt(end)-tt(1)+1; |
97 |
gforget |
1.1 |
if length(dimids)==3; |
98 |
gforget |
1.4 |
start=[0 0 t0]; |
99 |
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count=[siz(1) siz(2) nt]; |
100 |
gforget |
1.1 |
elseif isempty(kk); |
101 |
gforget |
1.4 |
start=[0 0 0 t0]; |
102 |
|
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count=[siz(1) siz(2) siz(3) nt]; |
103 |
gforget |
1.1 |
else; |
104 |
gforget |
1.7 |
start=[0 0 kk(1)-1 t0]; |
105 |
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count=[siz(1) siz(2) length(kk) nt]; |
106 |
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end; |
107 |
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else |
108 |
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[dimname,nt] = netcdf.inqDim(nc,dimids(end)); |
109 |
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if length(dimids)==2; |
110 |
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start=[0 0]; |
111 |
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count=[siz(1) siz(2)]; |
112 |
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elseif length(dimids)==3; |
113 |
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start=[0 0 0]; |
114 |
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count=[siz(1) siz(2) nt]; |
115 |
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elseif isempty(kk); |
116 |
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start=[0 0 0 0]; |
117 |
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count=[siz(1) siz(2) siz(3) nt]; |
118 |
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else; |
119 |
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start=[0 0 kk(1)-1 0]; |
120 |
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count=[siz(1) siz(2) length(kk) nt]; |
121 |
gforget |
1.1 |
end; |
122 |
gforget |
1.2 |
end; |
123 |
gforget |
1.7 |
fldTile=netcdf.getVar(nc,vv,start,count); |
124 |
|
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fldTile=squeeze(fldTile); |
125 |
gforget |
1.5 |
netcdf.close(nc); |
126 |
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|
127 |
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%initialize fld (full gcmfaces object) |
128 |
gforget |
1.2 |
if ff==1; |
129 |
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siz=[1 1 size(fldTile,3) size(fldTile,4)]; |
130 |
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fld=NaN*repmat(mygrid.XC,siz); |
131 |
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end; |
132 |
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|
133 |
gforget |
1.5 |
%place tile in fld |
134 |
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fld{nctiles.f{ff}}(nctiles.i{ff},nctiles.j{ff},:,:)=fldTile; |
135 |
gforget |
1.1 |
|
136 |
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end;%for ff=1:mygrid.nFaces; |
137 |
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138 |
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|
139 |
gforget |
1.7 |
|