/* @(#)plotvec.c 17.1.1.1 (ES0-DMD) 01/25/02 17:45:04 */ /*=========================================================================== Copyright (C) 1995 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 ===========================================================================*/ /*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ .COPYRIGHT (c) 1993 European Southern Observatory .IDENTifer PLOTVEC .AUTHOR R.M. van Hees IPG-ESO Garching .KEYWORDS Graphics, bulk data frame .LANGUAGE C .PURPOSE Plots vectors (polarisation map) from 2 two-dimensional FRAME in/output: IN_A/C/1/60 = input frame with intensisty information IN_B/C/1/60 = input frame with position angle information INPUTC/C/1/72 = coord_string (default: whole frame) INPUTR/R/1/3 = scale of vector [units/mm] position angle range (default: 0,360) INPUTI/I/1/2 = smooting parameter (default: 1) head (default: 1, the vector get an arrow) .COMMENTS none .ENVIRONment MIDAS #include Prototypes for MIDAS interfaces #include General symbols for Plot routines .VERSION 1.1 25-Nov-1993 Removed restrictions on frame size, RvH 1.0 10-Sep-1993 FORTRAN --> C RvH ------------------------------------------------------------*/ /* * Define _POSIX_SOURCE to indicate * that this is a POSIX program */ #define _POSIX_SOURCE 1 /* * definition of the used functions */ #include #include #include #include /* * define some macros and constants */ #include #include #define MAXLEV 50 #define MAXPIX 512 /* max frame dimension (X,Y) accessed at once */ #define MAXSIZ (MAXPIX * MAXPIX) /* * here starts the code of the function */ int main() { register int ii; int actvals, chunks, head, imfA, imfB, knul, last_row, naxis, size, stat, unit, ndum[PLDIM2], npixA[PLDIM2], npixB[PLDIM2], sublo[PLDIM2], subhi[PLDIM2]; float amin, amax, *p_imgA, *p_imgB, scar, nrpix[2], ranp[4], area[4], image[4], wcfram[12], mnmx[2]; double startA[PLDIM2], stepA[PLDIM2], startB[PLDIM2], stepB[PLDIM2]; char cmnd[21], nameA[61], nameB[61], cunitA[49], identA[33], identB[33], input[73], *label[4]; /* * initialised variables */ char *err_start = "*** FATAL: START descriptor of the frames differ", *err_step = "*** FATAL: STEP descriptor of the frames differ", *err_npix = "*** FATAL: NPIX descriptor of the frames differ", *err_1dim = "*** FATAL: the frames have only one dimension", *err_coord = "*** FATAL: invalid coordinate input ...", *err_xcuts = "*** FATAL: range in x has no overlap with current graph abscissa - NO PLOT", *err_ycuts = "*** FATAL: range in y has no overlap with current graph abscissa - NO PLOT"; static char *axis[PLDIM2] = { "MANU", "MANU" }; int access = 0, /* parameter for PCOPEN: plot mode */ plmode = -1, /* plot mode taken from keyword PMODE */ ismoot = 1; /* Default no smooting of the data */ /* * allocate memory for different character pointers and initialise a few */ for ( ii = 0; ii < 4; ii++ ) label[ii] = osmmget(81); (void) strcpy( label[0], "Position (" ); (void) strcpy( label[1], "Position (" ); /* * start of executable code */ (void) SCSPRO( "PLTVEC" ); /*contact with the MIDAS monitor*/ (void) SCKGETC( "MID$CMND", 1, 20, &actvals, cmnd ); if ( *cmnd == 'O' ) access = 1; /* * find file name and size information of first frame */ (void) SCKGETC( "IN_A", 1, 60, &actvals, nameA ); (void) SCFOPN( nameA, D_R4_FORMAT, 0, F_IMA_TYPE, &imfA ); (void) SCDRDI( imfA, "NAXIS", 1, 1, &actvals, &naxis, &unit, &knul ); (void) SCDRDI( imfA, "NPIX" , 1, PLDIM2, &actvals, npixA , &unit, &knul ); if ( naxis < 2 || (npixA[0] == 1 || npixA[1] == 1) ) SCETER( 1, err_1dim ); /* * find file name and size information of second frame */ (void) SCKGETC( "IN_B", 1, 60, &actvals, nameB ); (void) SCFOPN( nameB, D_R4_FORMAT, 0, F_IMA_TYPE, &imfB ); (void) SCDRDI( imfB, "NPIX" , 1, PLDIM2, &actvals, npixB , &unit, &knul ); if ( npixA[0] != npixB[0] || npixA[1] != npixB[1] ) SCETER( 2, err_npix ); /* * read descriptor of first frame */ (void) SCDRDD( imfA, "START", 1, PLDIM2, &actvals, startA, &unit, &knul ); (void) SCDRDD( imfA, "STEP" , 1, PLDIM2, &actvals, stepA , &unit, &knul ); (void) SCDGETC( imfA, "IDENT", 1, 32, &actvals, identA ); (void) SCDGETC( imfA, "CUNIT", 1, 48, &actvals, cunitA ); /* * read descriptor of second frame */ (void) SCDRDD( imfB, "START", 1, PLDIM2, &actvals, startB, &unit, &knul ); (void) SCDRDD( imfB, "STEP" , 1, PLDIM2, &actvals, stepB , &unit, &knul ); (void) SCDGETC( imfB, "IDENT", 1, 32, &actvals, identB ); /* * do both frames overlap? */ if ( startA[0] != startB[0] || startA[1] != startB[1] ) SCETER( 3, err_start ); if ( stepA[0] != stepB[0] || stepA[1] != stepB[1] ) SCETER( 4, err_step ); /* * Get the manual setting for the axes */ PCKRDR( "XAXIS", 4, &actvals, wcfram ); PCKRDR( "YAXIS", 4, &actvals, wcfram+FOR_Y ); /* * read window coordinates and take action */ (void) SCKGETC( "INPUTC", 1, 60, &actvals, input ); if ( *input == 'm' || *input == 'M' ) /* manual scaling */ { BOXWTP( wcfram, npixA[0], startA[0], stepA[0], image ); BOXWTP( wcfram+FOR_Y, npixA[1], startA[1], stepA[1], image+2 ); } else { if ( *input == 'c' || *input == 'C' ) /* display input */ { (void) SCKRDR( "OUTPUTR", 10, 1, &actvals, image, &unit, &knul); (void) SCKRDR( "OUTPUTR", 11, 1, &actvals, image+2, &unit, &knul); (void) SCKRDR( "OUTPUTR", 15, 1, &actvals, image+1, &unit, &knul); (void) SCKRDR( "OUTPUTR", 16, 1, &actvals, image+3, &unit, &knul); } else /* automatic scaling */ { stat = Convcoo(1,imfA,input,PLDIM2,ndum,sublo,subhi); if ( stat != ERR_NORMAL ) SCETER( 5, err_coord ); image[0] = sublo[0] + 1; image[1] = subhi[0] + 1; image[2] = sublo[1] + 1; image[3] = subhi[1] + 1; } } BOXPTW( image, npixA[0], startA[0], stepA[0], area ); BOXPTW( image+2, npixA[1], startA[1], stepA[1], area+2 ); PCKWRR( "PIXEL", 4, image ); if ( access == 0 ) { /* * get size of frame along X-axis */ if ( fabs( *wcfram ) < PLT_EPS && fabs( *(wcfram+1) ) < PLT_EPS ) { wcfram[0] = area[2]; wcfram[1] = area[3]; wcfram[2] = wcfram[3] = 0.0; } /* * get size of frame along Y-axis */ if ( fabs( *(wcfram+FOR_Y) ) < PLT_EPS && fabs( *(wcfram+FOR_Y+1) ) < PLT_EPS ) { axis[1] = "AUTO"; wcfram[FOR_Y] = area[2]; wcfram[FOR_Y+1] = area[3]; wcfram[FOR_Y+2] = wcfram[FOR_Y+3] = 0.0; } GETFRM( axis[0], wcfram ); GETFRM( axis[1], wcfram + FOR_Y ); PCKWRR( "XWNDL", 4, wcfram ); PCKWRR( "YWNDL", 4, wcfram+FOR_Y ); } else /* overplot mode*/ { PCKRDR( "XWNDL", 4, &actvals, wcfram ); PCKRDR( "YWNDL", 4, &actvals, wcfram+FOR_Y ); /* * does overplot data fall within plotted frame? */ amin = MYMIN( *wcfram, *(wcfram + 1) ); amax = MYMAX( *wcfram, *(wcfram + 1) ); if ( ( MYMAX( area[0], area[1] ) < amin ) || ( MYMIN( area[0], area[1] ) > amax ) ) SCETER( 6, err_xcuts ); amin = MYMIN( *(wcfram + FOR_Y), *(wcfram + FOR_Y + 1) ); amax = MYMAX( *(wcfram + FOR_Y), *(wcfram + FOR_Y + 1) ); if ( ( MYMAX( area[2], area[3] ) < amin ) || ( MYMIN( area[2], area[3] ) > amax ) ) SCETER( 7, err_ycuts ); } /* * get intensity */ (void) SCDRDR( imfA, "LHCUTS", 1, 4, &actvals, wcfram+FOR_Z, &unit, &knul); (void) SCKRDR( "INPUTR", 2, 4, &actvals, ranp, &unit, &knul); if ( fabs(ranp[0]) > PLT_EPS || fabs(ranp[1]) > PLT_EPS ) { wcfram[FOR_Z] = ranp[0]; wcfram[FOR_Z+1]= ranp[1]; } else { if ( wcfram[FOR_Z] == wcfram[FOR_Z+1] ) { wcfram[FOR_Z] = wcfram[FOR_Z+2]; wcfram[FOR_Z+1] = wcfram[FOR_Z+3]; } } ranp[0] = wcfram[FOR_Z]; ranp[1] = wcfram[FOR_Z+1]; PCKWRR( "ZWNDL", 2, wcfram+FOR_Z); (void) SCKRDR( "INPUTR", 1, 1, &actvals, &scar, &unit, &knul); /* * the intensity scale */ if ( scar == 0.0 ) { if ( wcfram[FOR_Z] == wcfram[FOR_Z+1] ) scar = wcfram[FOR_Z] / 10.0; else scar = ( wcfram[FOR_Z+1] - wcfram[FOR_Z] ) / 10.0; } /* * get the other input parameters */ (void) SCKRDI( "INPUTI", 1, 1, &actvals, &ismoot, &unit, &knul); (void) SCKRDI( "INPUTI", 2, 1, &actvals, &head, &unit, &knul); /* * setup graphic device according to MIDAS settings */ PCOPEN( " ", " ", access, &plmode ); /* * determine number of pixels and number of chunks */ nrpix[0] = (int) fabs( image[1] - image[0] ) + 1; nrpix[1] = (int) fabs( image[3] - image[2] ) + 1; last_row = MYMAX( image[2], image[3]); chunks = (int) ceil( (double) nrpix[0] * nrpix[1] / MAXSIZ ); nrpix[1] = (int) ceil( (double) nrpix[1] / chunks ); /* * allocate virtual memory and scratch space */ size = nrpix[0] * nrpix[1]; p_imgA = (float *) osmmget( size * sizeof( float )); p_imgB = (float *) osmmget( size * sizeof( float )); for ( ii = 0; ii < chunks; ii++ ) { if ( image[3] > image[2] ) /* size of chunk p.c.*/ { if ( ii > 0 ) image[2] += nrpix[1] - 1.0; image[3] = MYMIN( last_row, image[2] + nrpix[1] - 1 ); } else { if ( ii > 0 ) image[3] += nrpix[1] - 1.0; image[2] = MYMIN( last_row, image[3] + nrpix[1] - 1 ); } /* * get size of chunk in w.c. */ BOXPTW( image+2, npixA[1], startA[1], stepA[1], area+2 ); /* * extract chunck from original frame */ GETDAT( imfA, MAXSIZ, npixA, image, ismoot, p_imgA ); GETDAT( imfB, MAXSIZ, npixB, image, ismoot, p_imgB ); /* * do it!! */ PLVEC( p_imgA, p_imgB, image, area, stepA, scar, ranp, head ); /* * updating for the next loop */ nrpix[1] = MYMIN( last_row - ii * nrpix[1], nrpix[1] ); size = nrpix[0] * nrpix[1]; } (void) SCFCLO( imfA ); (void) SCFCLO( imfB ); /* * draw the axes and the label */ if ( plmode >= 0 && access == 0 ) { if ( strlen( cunitA ) > (size_t) 32 ) { (void) strncat( label[0], cunitA+32, 16 ); *(cunitA+32) = '\0'; } if ( strlen( cunitA ) > (size_t) 16 ) (void) strcat( label[1], cunitA+16 ); for ( ii = 0; ii < PLDIM2; ii++ ) { (void) strcat( label[ii], ")" ); LABSTR( label[ii] ); } /* * plot axes and labels */ PCFRAM( wcfram, wcfram+FOR_Y, label[0], label[1] ); if ( plmode == 1 ) { (void) sprintf( label[2], "Frames: %s + %s", nameA, nameB ); (void) sprintf( label[3], "Ident: %s + %s", identA, identB ); PLIDEN( plmode, label[2], label[3] ); } else if ( plmode == 2 ) PLVECI( plmode, nameA, identA, nameB, identB, scar, ranp ); } /* * close plot file and terminate graphic operations */ PCCLOS(); return SCSEPI(); }