| 1 |
function [data,xax,yax,zax,months,time,dim] = ... |
| 2 |
DiagLoadGradsData(Grads,dad,fln,DiagDebug) |
| 3 |
|
| 4 |
|
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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% Parse table file % |
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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ShiftData = 0; |
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format = 'NONSEQUENTIAL'; |
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|
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tablfile = [dad,'/',Grads,'.tabl']; |
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file = textread(tablfile,'%s','delimiter','\n','whitespace',''); |
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|
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for iline = 1:length(file) |
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rem = file{iline}; tokens = {}; itoken = 0; |
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while isstr(rem) |
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[token,rem] = strtok(rem); itoken = itoken + 1; |
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if ~isempty(token), tokens{itoken} = token; end |
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end |
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|
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if isequal(tokens{1},'XDEF') |
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if ~isequal(tokens{3},'LINEAR') |
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error('Unable to deal with nonlinear grads x-axis data!'); |
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end |
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num = str2num(tokens{2}); |
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ini = str2num(tokens{4}); |
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inc = str2num(tokens{5}); |
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xax = [ini:inc:ini+(num-1)*inc]; |
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if min(xax) >= 0 && max(xax) > 180 |
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ShiftData = 1; |
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end |
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nx = length(xax); |
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end |
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|
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if isequal(tokens{1},'YDEF') |
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if ~isequal(tokens{3},'LINEAR') |
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error('Unable to deal with nonlinear grads y-axis data!'); |
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end |
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num = str2num(tokens{2}); |
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ini = str2num(tokens{4}); |
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inc = str2num(tokens{5}); |
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yax = [ini:inc:ini+(num-1)*inc]; ny = length(yax); |
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end |
| 44 |
|
| 45 |
if isequal(tokens{1},'ZDEF') |
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if isequal(tokens{2},'1') |
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zax = [0]; zax_found = 1; dim = 2; |
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else |
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if ~isequal(tokens{3},'LINEAR') |
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error('Unable to deal with nonlinear grads z-axis data!'); |
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end |
| 52 |
num = str2num(tokens{2}); |
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ini = str2num(tokens{4}); |
| 54 |
inc = str2num(tokens{5}); |
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zax = [ini:inc:ini+(num-1)*inc]; dim = 3; |
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end |
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nz = length(zax); |
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end |
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|
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if isequal(tokens{1},'TDEF'), ini=tokens{4}; |
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if ~isequal(tokens{3},'LINEAR') |
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error('Currently unable to deal with nonlinear grads z-axis data!'); |
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end |
| 64 |
if ~isequal(tokens{5},'1mo') |
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error('Currently unable to deal with non monthly mean grads data!'); |
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end |
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if length(ini) == 13 |
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monchar=ini(9:11); |
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end |
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if isequal(monchar,'JAN'), inimonth = 1; |
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elseif isequal(monchar,'FEB'), inimonth = 2; |
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elseif isequal(monchar,'MAR'), inimonth = 3; |
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elseif isequal(monchar,'APR'), inimonth = 4; |
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elseif isequal(monchar,'MAY'), inimonth = 5; |
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elseif isequal(monchar,'JUN'), inimonth = 6; |
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elseif isequal(monchar,'JUL'), inimonth = 7; |
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elseif isequal(monchar,'AUG'), inimonth = 8; |
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elseif isequal(monchar,'SEP'), inimonth = 9; |
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elseif isequal(monchar,'OCT'), inimonth = 10; |
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elseif isequal(monchar,'NOV'), inimonth = 11; |
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elseif isequal(monchar,'DEC'), inimonth = 12; end |
| 82 |
num = str2num(tokens{2}); |
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months=[inimonth:num+inimonth-1]; |
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time=months/12; nt = length(months); |
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|
| 86 |
end |
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|
| 88 |
if isequal(tokens{1},'VARS') |
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nv = str2num(tokens{2}); |
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VARSline = iline; |
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end |
| 92 |
if isequal(tokens{1},fln) |
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FIELDline = iline; |
| 94 |
ivar = iline - VARSline; |
| 95 |
end |
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|
| 97 |
if isequal(tokens{1},'UNDEF') |
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undef = str2num(tokens{2}); |
| 99 |
end |
| 100 |
|
| 101 |
if isequal(tokens{1},'FORMAT') |
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if isequal(tokens{2},'SEQUENTIAL') |
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format = 'SEQUENTIAL'; |
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else |
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disp(['Unrecognized grads FORMAT: ',tokens{2}]); |
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end |
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end |
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|
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if isequal(tokens{1},'DSET') |
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datafile = [dad,tokens{2}(2:end)]; |
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end |
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|
| 113 |
end |
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|
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|
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 117 |
% Verification and debugging % |
| 118 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 119 |
|
| 120 |
if DiagDebug, disp([' Debug -- grads data format: ',format]); end |
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|
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% Verify that things are there. |
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parameters = {'xax' ,'yax' ,'zax' ,'time','nv' ,'undef','ivar'}; |
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GRADSnames = {'XDEF','YDEF','ZDEF','TDEF','VARS','UNDEF',fln }; |
| 125 |
for ii = 1:length(parameters) |
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try |
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eval([parameters{ii},';']); |
| 128 |
catch |
| 129 |
error(['GRADS information not found: ',GRADSnames{ii}]); |
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end |
| 131 |
end |
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|
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|
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 135 |
% Read data file % |
| 136 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 137 |
|
| 138 |
tol = 1e-5; |
| 139 |
fid=fopen(datafile,'r','b'); |
| 140 |
data = fread(fid,'real*4'); |
| 141 |
fclose(fid); |
| 142 |
if isequal(format,'SEQUENTIAL') |
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index=true([nx*ny*nz*nv*nt+2*nv*nt,1]); |
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index([1:nx*ny*nz+2:end])=false; |
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index([2:nx*ny*nz+2:end])=false; |
| 146 |
data = data(index); |
| 147 |
end |
| 148 |
data = reshape(data,[nx,ny,nz,nv,nt]); |
| 149 |
data = squeeze(data(:,:,:,ivar,:)); |
| 150 |
data( abs((data-undef)/undef) < tol ) = NaN; |
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if ShiftData |
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indexWestHemi = xax>=180; |
| 153 |
indexEastHemi = xax<180; |
| 154 |
data = cat(1,data(indexWestHemi,:,:),data(indexEastHemi,:,:)); |
| 155 |
xax = cat(2,xax(indexWestHemi)-360,xax(indexEastHemi)); |
| 156 |
end |
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