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get_NDBC_spec.m
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function [bb cc p] = get_NDBC_spec(fname,payload)
%
% read NODC netCDF4 file to get spectral information
% created 07/12 TJ. Hesser
%
try
dep = h5readatt(fname,'/','sea_floor_depth_below_sea_level');
catch
dep = -999.00;
end
% get frequency bands for spectra
try
freq(:,1) = h5read(fname,'/wave_wpm');
dft = h5read(fname,'/_nc4_non_coord_wave_wpm_bnds');
df(:,1) = dft(2,:) - dft(1,:);
catch
try
freq(:,1) = h5read(fname,'/wave_wa');
dft = h5read(fname,'/_nc4_non_coord_wave_wa_bnds');
df(:,1) = dft(2,:) - dft(1,:);
catch
freq(:,1) = repmat(-99.00,[48 1]);
df(:,1) = repmat(-99.00,[48 1]);
end
end
for jj = 2:length(freq)
si(jj,1) = freq(jj) - freq(jj-1);
end
si(1,1) = freq(1);
% get c11 from file
try
c11 = h5read(fname,['/',payload,'/wave_sensor_1/c11']);
c11_info = h5info(fname,['/',payload,'/wave_sensor_1/c11']);
c11_qc = h5read(fname,['/',payload,'/wave_sensor_1/', ...
'significant_wave_height_qc']);
time_spec = double(h5read(fname,'/time'));
jj = c11_qc ~= 0;
%c11 = c11(:,jj);
c11(:,jj) = c11_info.FillValue;
%time_spec = time_spec(jj,1);
catch
fprintf(1,'Wave Spectra information not available for station %5s\n', ...
fname(end-21:end-17));
time_spec = double(h5read(fname,'/time'));
c11 = repmat(-999.00,[length(freq) length(time_spec)]);
c11_info.FillValue = 0.0;
end
for zz = 1:size(c11,2)
ii = c11(:,zz) == c11_info.FillValue;
c11(ii,zz) = -999.;
end
% check to see if direction components are available
try
r1 = h5read(fname,['/',payload,'/wave_sensor_1/r1']);
%r1 = r1(:,jj);
r2 = h5read(fname,['/',payload,'/wave_sensor_1/r2']);
%r2 = r2(:,jj);
alpha1 = h5read(fname,['/',payload,'/wave_sensor_1/alpha1']);
%alpha1 = alpha1(:,jj);
alpha2 = h5read(fname,['/',payload,'/wave_sensor_1/alpha2']);
%alpha2 = alpha2(:,jj);
p = 2;
fprintf(1,'Direction information available for %5s \n\n',fname(end-21:end-17));
catch
fprintf(1,'No direction information available for %5s\n\n',fname(end-21:end-17));
p = 1;
r1 = repmat(0,size(c11));r2 = repmat(0,size(c11));
alpha1 = repmat(0,size(c11));alpha2 = repmat(0,size(c11));
end
for zz = 1:size(c11,2)
if c11(:,zz) == c11_info.FillValue
hmo = -999.00;
fpp = -999.00;fm = -999.00;fp = -999.00;mp = -1;
tpp = -999.00;tm = -999.00;tp = -999.00;
elseif sum(c11(:,zz)) > 1000.0 | c11(:,zz) < 0
hmo = -999.00;
fpp = -999.00;fm = -999.00;fp = -999.00;mp = -1;
tpp = -999.00;tm = -999.00;tp = -999.00;
else
hmo = 4.0*sqrt(sum(c11(:,zz).*df));
[fpp,fm,fp,mp] = periods(c11(:,zz),freq,df);
tpp = 1./(fpp + 1.0e-10);
tm = 1./(fm + 1.0e-10);
tp = 1./(fp + 1.0e-10);
end
r1(r1(:,zz) == c11_info.FillValue,zz) = 0;
r2(r2(:,zz) == c11_info.FillValue,zz) = 0;
alpha1(alpha1(:,zz) == c11_info.FillValue,zz) = 0;
alpha2(alpha2(:,zz) == c11_info.FillValue,zz) = 0;
%end
if mp > 0
[delhmo,delttp,deltm,deltm1,deltm2, ...
delfspr] = delftsums(c11(:,zz),freq,df);
else
delhmo = -999.00;delttp = -999.00;deltm = -999.00;
deltm1 = -999.00;deltm2 = -999.00;delfspr = -999.00;
end
if sum(r1(:,zz) > 0) | c11(:,zz) == -999
if mp > 0
%[ef2d] = simp_ef2d(freq,c11(:,zz),r1(:,zz), ...
% r2(:,zz),alpha1(:,zz),alpha2(:,zz));
[ef2d] = twodgen(c11(:,zz),freq,df,r1(:,zz), ...
r2(:,zz),alpha1(:,zz),alpha2(:,zz),dep);
[wavdvt,wavdvfm,wavpd,wavdmx,wavfmx ...
,sumefx,sumefy,summfx,summfy] = ...
directns(ef2d,freq,df,360,1,mp,dep);
wavdvt = dir_convert(wavdvt,270);
wavdvfm = dir_convert(wavdvfm,270);
wavpd = dir_convert(wavpd,270);
wavdmx = dir_convert(wavdmx,270);
[delftmdr,delftpdr,delftsprd] = ...
delftsdrs(ef2d,freq,df,360,1);
else
wavdvt = -999.00;wavdvfm = -999.00;wavpd = -999.00;
wavdmx = -999.00;wavfmx = -999.00;sumefx = -999.00;
sumefy = -999.00;summfx = -999.00;summfy = -999.00;
delftmdr = -999.00;delftpdr = -999.00;delftsprd = -999.00;
end
else
wavdvt = -999.00;wavdvfm = -999.00;wavpd = -999.00;
wavdmx = -999.00;wavfmx = -999.00;sumefx = -999.00;
sumefy = -999.00;summfx = -999.00;summfy = -999.00;
delftmdr = -999.00;delftpdr = -999.00;delftsprd = -999.00;
end
bb(zz,:) = [hmo,tp,tpp,tm,wavdvt,wavdvfm,wavpd,wavdmx,delhmo,delttp,deltm, ...
deltm1,deltm2,delfspr,delftmdr,delftpdr,delftsprd,sumefx,sumefy, ...
summfx,summfy];
if c11(:,zz) == -999;
bb(zz,:) = -999.00;
c11(:,zz) = -999.00;r1(:,zz) = -9.9999;r2(:,zz) = -9.9999;
alpha1(:,zz) = -999.00;alpha2(:,zz) = -999.00;
end
ir = c11(:,zz) == 0;
r1(ir,zz) = 0.0000;r2(ir,zz) = 0.0000;
alpha1(ir,zz) = 000.00; alpha2(ir,zz) = 000.00;
end
cc = struct('time',time_spec,'freq',freq,'si',si,'c11',c11, ...
'r1',r1,'r2',r2,'alpha1',alpha1,'alpha2',alpha2);