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/*===========================================================================
Copyright (C) 2001 European Southern Observatory (ESO)
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public
License along with this program; if not, write to the Free
Software Foundation, Inc., 675 Massachusetss Ave, Cambridge,
MA 02139, USA.
Corresponding concerning ESO-MIDAS should be addressed as follows:
Internet e-mail: midas@eso.org
Postal address: European Southern Observatory
Data Management Division
Karl-Schwarzschild-Strasse 2
D 85748 Garching bei Muenchen
GERMANY
===========================================================================*/
/* Program : shiftall.c */
/* Author : G. Mulas - ITAL_FLAMES Consortium */
/* Date : */
/* */
/* Purpose : Missing */
/* */
/* */
/* Input: see interface */
/* */
/* Output: */
/* */
/* DRS Functions called: */
/* none */
/* */
/* Pseudocode: */
/* Missing */
/* */
/* Version : */
/* Last modification date: 2002/08/05 */
/* Who When Why Where */
/* AMo 02-08-05 Add header header */
/*-------------------------------------------------------------------------*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <math.h>
#include <flames_midas_def.h>
#include <flames_def_drs_par.h>
#include <flames_uves.h>
#include <flames_newmatrix.h>
#include <flames_shiftcommon.h>
#include <flames_getordpos.h>
#include <flames_getordslope.h>
#include <flames_shift_all_FF.h>
#include <flames_dointerpolate.h>
#include <flames_shiftall.h>
flames_err shift_all_FF(allflats *allflatsin, orderpos *ordpos, double yshift,
allflats *allflatsout)
{
flames_err status=0;
int32_t i=0;
int32_t ix=0;
int32_t iy=0;
int32_t iorder=0;
int32_t iframe=0;
int32_t ifibre=0;
int32_t lfibre=0;
shiftstruct *shiftdata=0;
fitstruct fitdata;
double x;
double ordercentre;
double orderslope;
frame_data pixelvalue=0;
frame_data pixelsigma=0;
char output[200];
shiftstruct *myshiftdata=0;
singleflat *myflatin=0;
singleflat *myflatout=0;
frame_data *fdvecbuf1=0;
frame_data *fdvecbuf2=0;
frame_mask *fmvecbuf1=0;
frame_mask *fmvecbuf2=0;
int32_t *lvecbuf1=0;
int32_t *lvecbuf2=0;
int32_t iorderifibreoffset=0;
int32_t iorderifibreindex=0;
int32_t iorderifibreixindex=0;
int32_t iyixindex=0;
int actvals=0;
char drs_verbosity[10];
int mid_stat=0;
memset(drs_verbosity, 0, 10);
if ((mid_stat=SCKGETC(DRS_VERBOSITY, 1, 3, &actvals, drs_verbosity))
!= 0) {
/* the keyword seems undefined, protest... */
return(MAREMMA);
}
fmvecbuf1 = allflatsin->goodfibres[0][0];
lvecbuf1 = allflatsout->lowfibrebounds[0][0];
lvecbuf2 = allflatsout->highfibrebounds[0][0];
fitdata.availpixels=0;
fitdata.offset = calloc((size_t) 8, sizeof(double));
fitdata.value = calloc((size_t) 8, sizeof(double));
fitdata.sigma = calloc((size_t) 8, sizeof(double));
for (i=0; i<=7; i++) {
fitdata.offset[i]=0;
fitdata.value[i]=0;
fitdata.sigma[i]=0;
}
/* allocate the local shiftdata array of structures */
shiftdata =
(shiftstruct *) calloc((size_t)(allflatsin->subcols), sizeof(shiftstruct));
for (ix=0; ix<=(allflatsin->subcols-1); ix++) {
myshiftdata = shiftdata+ix;
myshiftdata->ixoffsets = calloc((size_t) 8, sizeof(int32_t));
myshiftdata->yfracoffsets = calloc((size_t) 8, sizeof(double));
myshiftdata->yintoffsets = calloc((size_t) 8, sizeof(int32_t));
myshiftdata->normfactor = calloc((size_t) 8, sizeof(double));
myshiftdata->normsigma = calloc((size_t) 8, sizeof(double));
myshiftdata->goodoverlap = calloc((size_t) 8, sizeof(double));
}
/* This function will have to loop over orders, x's, fibres and y's. */
/* loop over order... */
for (iorder=0; iorder<=(ordpos->lastorder-ordpos->firstorder); iorder++) {
iorderifibreoffset = iorder*allflatsin->maxfibres;
double order = (double) (iorder+ordpos->firstorder);
/* loop over x... */
for (ix=0; ix<=(allflatsin->subcols-1); ix++) {
myshiftdata = shiftdata+ix;
/* convert the ix pixel coordinate to the x world coordinate */
x = allflatsin->substartx+(allflatsin->substepx)*((double) ix);
/* find the unshifted central position and slope of this order at
this x */
/* bail out if the function call return an error status */
if ((status = get_ordpos(ordpos, order, x, &ordercentre))!=NOERR) {
return(status);
}
myshiftdata->ordercentre = ordercentre;
if ((status = get_ordslope(ordpos, order, x, &orderslope))!=NOERR) {
return(status);
}
myshiftdata->orderslope = orderslope;
/* WARNING: remember that both ordercentre and orderslope are in
world coordinates so far! */
}
/* split the loop, calcshifts needs shiftdata to have been filled
already for all ixes */
for (ix=0; ix<=(allflatsin->subcols-1); ix++) {
myshiftdata = shiftdata+ix;
/* loop over FF frames (even, odd, whatever...) */
for (iframe=0; iframe<=allflatsin->nflats-1;iframe++) {
/* compute the pixel coordinates of the pixels to be used for
interpolation */
myflatin = allflatsin->flatdata+iframe;
myflatout = allflatsout->flatdata+iframe;
fdvecbuf1 = myflatout->data[0];
fdvecbuf2 = myflatout->sigma[0];
fmvecbuf2 = myflatout->badpixel[0];
if ((status=calcshifts(allflatsin, shiftdata, iframe, ix, yshift))
!= NOERR) {
return(status);
}
/* loop over lit fibres in this frame */
for (lfibre=0; lfibre<=(myflatin->numfibres-1); lfibre++) {
/* put the actual fibre index in a variable, to avoid using very
int32_t strucure and array names and make the code easier to read
(well, sort of...) */
ifibre = myflatin->fibres[lfibre];
iorderifibreindex = iorderifibreoffset+ifibre;
iorderifibreixindex = (iorderifibreindex*allflatsin->subcols)+ix;
/* I might check whether this fibre is actually lit in this frame,
but this is redundant, isn't it? */
/* do check that this order/fibre/x is good overall, otherwise it
is useless to try to shift it */
if (fmvecbuf1[iorderifibreixindex]==GOODSLICE ||
fmvecbuf1[iorderifibreixindex]==DEMISLICE) {
/* this fibre/order/x is good (to some extent) in the unshifted
frames, go ahead and find this fibre centre and boundaries */
if ((status=locatefibre(allflatsin, allflatsout, ordpos,
shiftdata, iorder, ifibre, ix, yshift))
!= NOERR) {
return(status);
}
/* loop over pixels belonging to the shifted fibre, only if
ishiftedyup>=ishiftedydown */
for (iy=lvecbuf1[iorderifibreixindex];
iy<=lvecbuf2[iorderifibreixindex];
iy++) {
iyixindex = (iy*allflatsin->subcols)+ix;
/* build the list of pixels to use for interpolation */
if ((status=selectavail(allflatsin, shiftdata, &fitdata,
iorder, iframe, ix, iy)) != NOERR) {
return(status);
}
/* do the interpolation (if possible) */
if ((status=dointerpolate(allflatsout, &fitdata, iorder,
iframe, ifibre, ix, iy)) !=NOERR) {
return(status);
}
/* was the interpolation successful? */
if (fmvecbuf2[iyixindex]==0) {
/* negative values and/or anomalously large values
may wreak havoc in iterative
interpolations, i.e. other pixels interpolated
using this value, therefore clip them */
if ((pixelvalue = fdvecbuf1[iyixindex])<0) {
if ((pixelvalue*pixelvalue)>4*fdvecbuf2[iyixindex]) {
pixelsigma = (frame_data) pow(fdvecbuf2[iyixindex],.5);
if ( strcmp(drs_verbosity,"LOW") == 0 ){
} else {
SCTPUT("Warning: interpolated large negative value:");
sprintf(output, "pixel=%g and sigma=%g at x=%d, \
y=%d", pixelvalue, pixelsigma, ix+1, iy+1);
SCTPUT(output);
SCTPUT("marking it bad");
}
fdvecbuf2[iyixindex] = pixelvalue*pixelvalue;
fdvecbuf1[iyixindex] = 0;
fmvecbuf2[iyixindex] = 1;
}
else {
/* we are within error, just clip it silently */
fdvecbuf1[iyixindex] = 0;
}
}
else if (pixelvalue>1) {
/* no sensible way to clip this, just kill it */
pixelsigma = (frame_data) pow(fdvecbuf2[iyixindex],.5);
if ( strcmp(drs_verbosity,"LOW") == 0 ){
} else {
SCTPUT("Warning: interpolated too large normalised \
value:");
sprintf(output, "pixel=%g and sigma=%g at x=%d, \
y=%d", pixelvalue, pixelsigma, ix+1, iy+1);
SCTPUT(output);
SCTPUT("marking it bad");
}
fdvecbuf2[iyixindex] = pixelvalue*pixelvalue;
fdvecbuf1[iyixindex] = 0;
fmvecbuf2[iyixindex] = 1;
}
}
}
}
}
}
}
}
/* free here all dynamically allocated temporary arrays before returning */
for (ix=0; ix<=(allflatsin->subcols-1); ix++) {
myshiftdata = shiftdata+ix;
free(myshiftdata->ixoffsets);
free(myshiftdata->yfracoffsets);
free(myshiftdata->yintoffsets);
free(myshiftdata->normfactor);
free(myshiftdata->normsigma);
free(myshiftdata->goodoverlap);
}
free(shiftdata);
free(fitdata.offset);
free(fitdata.value);
free(fitdata.sigma);
return(NOERR);
}
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