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include <gset.h>
include <mach.h>
include <pkg/gtools.h>
include "hdicfit.h"
define MSIZE 2.0
# HDIC_EBARS -- Plot data points with their error bars as markers. The
# independent variable is fog subtracted transformed density.
procedure hdic_ebars (ic, gp, gt, x, y, wts, ebw, npts)
pointer ic # Pointer to ic structure
pointer gp # Pointer to graphics stream
pointer gt # Pointer to gtools structure
double x[ARB] # Array of independent variables
double y[ARB] # Array of dependent variables
double wts[ARB] # Array of weights
double ebw[ARB] # Error bar half width (positive number)
int npts # Number of points
pointer sp, xr, yr, sz
int orig_mark, i, xaxis, yaxis, mark, added_mark
real size, dx, dy, szmk
int gt_geti()
bool fp_equald()
include "hdic.com"
begin
call smark (sp)
xaxis = (IC_AXES (ic, IC_GKEY(ic), 1))
yaxis = (IC_AXES (ic, IC_GKEY(ic), 2))
if (xaxis == 'x' || xaxis == 'u')
orig_mark = GM_HEBAR
else if (yaxis == 'x' || yaxis == 'u')
orig_mark = GM_VEBAR
else {
call eprintf ("Choose graph type with axes 'u' or 'x'\n")
call sfree (sp)
return
}
added_mark = GM_CIRCLE
call salloc (xr, npts, TY_REAL)
call salloc (yr, npts, TY_REAL)
call salloc (sz, npts, TY_REAL)
call achtdr (x, Memr[xr], npts)
call achtdr (y, Memr[yr], npts)
call achtdr (ebw, Memr[sz], npts)
if (IC_OVERPLOT(ic) == NO) {
# Start a new plot
call gclear (gp)
# Set the graph scale and axes
call gascale (gp, Memr[xr], npts, 1)
call gascale (gp, Memr[yr], npts, 2)
# If plotting HD curve, set wy2 to maxden, which may have
# been updated if a new endpoint was added.
if ((IC_AXES (ic, IC_GKEY(ic), 1) == 'y') &&
(IC_AXES (ic, IC_GKEY(ic), 2) == 'u'))
call gswind (gp, INDEF, INDEF, INDEF, real (maxden))
call gt_swind (gp, gt)
call gt_labax (gp, gt)
}
call ggscale (gp, 0.0, 0.0, dx, dy)
do i = 1, npts {
size = Memr[sz+i-1] # Sizes are WCS units; transform them
if (gt_geti (gt, GTTRANSPOSE) == NO) {
size = size / dx
mark = orig_mark
szmk = size
# Check for added point
if (fp_equald (ebw[i], ADDED_PT)) {
szmk = MSIZE
mark = added_mark
}
# Check for deleted point
if (fp_equald (wts[i], 0.0D0)) {
szmk = MSIZE
mark = mark + GM_CROSS
}
call gmark (gp, Memr[xr+i-1], Memr[yr+i-1], mark, szmk, szmk)
} else {
size = size / dy
szmk = size
mark = orig_mark
# Check for added point
if (fp_equald (ebw[i], ADDED_PT)) {
szmk = MSIZE
mark = added_mark
}
# Check for deleted point
if (fp_equald (wts[i], 0.0D0)) {
szmk = MSIZE
mark = mark + GM_CROSS
}
call gmark (gp, Memr[yr+i-1], Memr[xr+i-1], mark, szmk, szmk)
}
}
IC_OVERPLOT(ic) = NO
call sfree (sp)
end
# HDIC_EBW -- Calculate error bar width for plotting points. Width is
# returned in NDC units.
procedure hdic_ebw (ic, density, indv, sdev, ebw, npts)
pointer ic # Pointer to ic structure
double density[ARB] # Untransformed density NOT fog subtracted
double indv[ARB] # Transformed density above fog
double sdev[ARB] # Array of standard deviation values, density units
double ebw[ARB] # Error bar half width (positive numbers)
int npts # Number of data points
double fog
pointer sp, denaf, outwe
int xaxis, yaxis, i
bool fp_equald()
real ic_getr()
begin
xaxis = (IC_AXES (ic, IC_GKEY(ic), 1))
yaxis = (IC_AXES (ic, IC_GKEY(ic), 2))
if (xaxis == 'u' || yaxis == 'u') {
call amovd (sdev, ebw, npts)
return
}
call smark (sp)
call salloc (denaf, npts, TY_DOUBLE)
call salloc (outwe, npts, TY_DOUBLE)
fog = double (ic_getr (ic, "fog"))
call asubkd (density, fog, Memd[denaf], npts)
call aaddd (Memd[denaf], sdev, Memd[denaf], npts)
call hdic_ebtran (Memd[denaf], Memd[outwe], npts, IC_TRANSFORM(ic))
# Subtract transformed values to get errors. Then check for
# added points, which are flagged with ebw=ADDED_PT.
call asubd (Memd[outwe], indv, ebw, npts)
do i = 1, npts {
if (fp_equald (sdev[i], ADDED_PT))
ebw[i] = ADDED_PT
}
call sfree (sp)
end
# HDIC_EBTRAN -- Apply transformation, generating a vector of independent
# variables from a density vector. The independent variable vector is the
# standard deviation values and the output values are the errors. This
# routine checks for ADDED_PT valued standard deviation, which indicates an
# added point.
procedure hdic_ebtran (density, ind_var, npts, transform)
double density[npts] # Density vector - input
double ind_var[npts] # Ind variable vector - filled on output
int npts # Length of data vectors
int transform # Integer code for transform type
int i
bool fp_equald()
begin
switch (transform) {
case HD_LOGO:
do i = 1, npts {
if (fp_equald (density[i], 0.0))
ind_var[i] = 0.0
else
ind_var[i] = log10 ((10. ** density[i]) - 1.0)
}
case HD_K75:
do i = 1, npts {
if (fp_equald (density[i], 0.0))
ind_var[i] = 0.0
else
ind_var[i] = density[i] + 0.75*log10(1.- 10.**(-density[i]))
}
case HD_K50:
do i = 1, npts {
if (fp_equald (density[i], 0.0))
ind_var[i] = 0.0
else
ind_var[i] = density[i] + 0.50*log10(1.- 10.**(-density[i]))
}
case HD_NONE:
call amovd (density, ind_var, npts)
default:
call error (0, "Unrecognized transformation in HDIC_EBTRAN")
}
end
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