#======================================================================
# P L O T _ B A C K S C A T T E R . P L
# doc: Tue Jul 28 13:21:09 2015
# dlm: Tue May 24 23:09:58 2016
# (c) 2015 A.M. Thurnherr
# uE-Info: 61 38 NIL 0 0 72 0 2 4 NIL ofnI
#======================================================================
# HISTORY:
# Jul 28, 2015: - created from [LWplot_Sv]
# Jan 26, 2016: - added return on no data to plot
# Mar 16, 2016: - adapted to gmt5
# May 18, 2016: - added version
# - expunged $realLastGoodEns
# May 24, 2016: - calc_binDepths() -> binDepths()
# - fixed for partial-depth casts
require "$ANTS/libGMT.pl";
sub plot_backscatter($)
{
my($pfn) = @_;
return unless ($P{max_depth});
my($xmin) = $P{min_ens}-0.5;
my($xmax) = $P{max_ens}+0.5;
my($ymin) = round(antsParam('min_depth')-25,50);
my($ymax) = ($P{water_depth} > 0) ?
round($P{water_depth}+25,50) :
round($P{max_depth}+$P{ADCP_bin_length}+25,50);
my($ens_width) = 10 / ($P{max_ens} - $P{min_ens} + 1);
my($bin_length) = 10 * $P{ADCP_bin_length} /
($P{max_depth}-$P{min_depth}+$P{ADCP_bin_length});
my($R) = "-R$xmin/$xmax/$ymin/$ymax";
GMT_begin($pfn,'-JX10/-10',$R,'-P');
my($C) = "-C$WCALC/Sv.cpt";
GMT_psxy("$C -Sr");
for ($ens=$firstGoodEns; $ens<=$lastGoodEns; $ens++) {
next unless numberp($LADCP{ENSEMBLE}[$ens]->{CTD_DEPTH});
my(@bindepth) = binDepths($ens);
for ($bin=$LADCP_firstBin-1; $bin<=$LADCP_lastBin-1; $bin++) {
next unless numberp($LADCP{ENSEMBLE}[$ens]->{W}[$bin]);
my($bi) = $bindepth[$bin]/$opt_o;
printf(GMT "%d %f %f $ens_width $bin_length\n",
$LADCP{ENSEMBLE}[$ens]->{NUMBER},
$bindepth[$bin],
$LADCP{ENSEMBLE}[$ens]->{SV}[$bin]);
}
}
if ($P{water_depth} > 0) { # SEABED
GMT_psxy('-G204/153/102');
print(GMT "$xmin $ymax\n$xmax $ymax\n$xmax $P{water_depth}\n $xmin $P{water_depth}\n");
}
my($depth_tics) = ($ymax-$ymin < 1000) ? 'f10a100' : 'f100a500'; # AXES
my($ens_tics) = ($xmax-$xmin < 4000) ? 'f50a500' : 'f500a2000';
GMT_psxy("-B$ens_tics:'Ensemble [#]':/$depth_tics:'Depth [m]':WeSn");
GMT_unitcoords(); # LABELS
GMT_pstext('-F+f9,Helvetica,orange+jTR -N -Gwhite');
print(GMT "0.99 0.01 V$VERSION\n");
GMT_pstext('-F+f14,Helvetica,blue+jTL -N');
print(GMT "0.01 -0.06 $P{out_basename} $P{run_label}\n");
GMT_setAnnotFontSize(7); # SCALE BAR
GMT_psscale("-Dn0.85/0.1+w3/0.4+e $C -B/:S\@-v\@-:");
GMT_end(); # FINISH PLOT
}
1; # return true on require