;---------------------------------------------------------------------- ; Copyright (C) 2025-2026 ; Associated Universities, Inc. Washington DC, USA. ; ; 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 Massachusetts Ave, Cambridge, ; MA 02139, USA. ; ; Correspondence concerning AIPS should be addressed as follows: ; Internet email: aipsmail@nrao.edu. ; Postal address: AIPS Project Office ; National Radio Astronomy Observatory ; 520 Edgemont Road ; Charlottesville, VA 22903-2475 USA ----------------------------------------------------------------------- This file must be used to record any changes made to the Master version of AIPS kept in SOCORRO. An entry is: line 1: Date Program name Your name line 2: What was done (may span multiple lines) line n-1: Where has this change been moved (e.g. 15JUL94, nowhere) line n: Blank The details of line 1 are important since programs are used to find specified strings and do conversions on them. It MUST be typed as follows: 1 blank, 4 digits, a period, two blanks, then the Month, day, comma, year, some space, a title, some more space, your name. *********************************************************************** *********************************************************************** Changes while 31DEC26 is TST *********************************************************************** *********************************************************************** 16335. December 1, 2025 Code rollover Eric Changed $APLSUB/GETRLS.FOR. $INSUNIX/INSTEP1, $SYSPERL/install.pl, $SYSPERL/update.pl, $SYSPERL/ZXHLP2.PL, $SYSPERL/LaCook.PL, $SYSPERL/AIPSHELP, $UPDUNIX/UPDCONTROL, $SYSUNIX/AIPSPATH.CSH, $SYSUNIX/AIPSPATH.SH $SYSUNIX/AIPSPATH1.CSH, $SYSUNIX/AIPSPATH1.SH to make 31DEC26 instead of 31DEC25 - also fix dates in install.pl and update.pl. Moved nowhere. 16336. December 5, 2025 CVS Eric Removed more references to cvs from install.pl ans MAKE.MNJ. Most were already limited to COAOARN or commented out. Moved nowhere. 16337. December 4-5 AIPS web site Eric Reviewed the files on the AIPS web site and updated several. Created new web page and data area for VLBAPIPE and updated the VLBARUN files. 16338. December 10, 2025 NEWPARMS Eric Changing OFMGET and OFMSAVE to pseudo verbs in a RUN file does not work. Removed those two lines. This means COMPRESS is much better than RUN NEWPARMS. Moved to 31DEC25 this date. 16339. December 10, 2025 CATALOG Eric Changed AU3 and help file to drop INTYPE. It frequently causes issues so it was not include in CAT2LOG et al. Changed INTYPE help as well. Moved to 31DEC25 this date. 16340. December 10, 2025 PRPLT Eric PRPLT forgot to set XYRATIO to some sort of default so XYRATIO =0 caused a failure. Changed GINITL to trap this and set it to 1.0 on DOTV false or to the TV window ratio. Changed PRPLT also to adjust the top text position and set XYRATIO. Moved to 31DEC25 this date. 16341. December 10, 2025 GREYS Eric Added DPARM to control the profile plots with (1) and (2) controling size and (3)-(6) controling pixrange. Changed to use the same metric scaling throughout. Added units strings when a profile on the top is plotted. Moved to 31DEC25 this date. 16342. December 10, 2025 CLCAL Eric Added a string on each SOURCES and CALSOUR history line saying omitted or included. This information is already in the HI file but some people do not read. Moved nowhere. 16343. December 11, 2025 CLPLT Eric Made printing to OUTTEXT a separate subroutine done before plots so that stopping plots does not cut off the printing. Corrected feature in which it lost the last sample which is very bad when there is only one sample. Changed to plot scaling to let it show more detail. Moved to 31DEC25 on 12 December. 16344. December 12, 2025 Misc Eric In GREYS, corrected units label at the bottom and position of the label to right of top profile. IN CLPLT added antenna numbers to the print out at the top of each triangle. Changed number of adverbs in GREYS in subroutines AU2A (PLGET) and AU8A (extlist). Moved to 31DEC25 this date. 16345. December 15, 2025 CAPLT Eric Added DOPRINT and OUTTEXT to CAPLT and added a subroutine to print the values ahead of the subroutine to plot them. That means that the full print is done even when the user stops the plotting after a page or two. Moved to 31DEC25 this date. 16346. December 16, 2025 CLPLT, CAPLT Eric Changed the computation of error bars from an assumption that data weights are fully calibrator in 1/Jy^2. The new computation uses the scatter in the data over the SOLINT interval and hence requires that SOLINT be at least several times the input integration time. Correct formulae are used for the amplitude and phase functions' error computation. Then the uncertainty is divided by the sqrt of the number of samples - 1 to put the errors as "expected error". Moved to 31DEC25 this date. 16347. December 22, 2025 EXTAB Eric Corrected time format by adding a leading '0' when the seconds are less than 9.95. Was blank before. Moved to 31DEC25 this date. 16348. December 29, 2025 Plot labels, PRPLT Eric Changed CLAB1, CLAB2, IAXIS1, and TVLAB to put one and only one blank character between the prefix and the axis label. This should read better. Changed PRPLT to improve the positioning of the labels. The top label was too close to the top plot and the multiple panel plots did not leave enough room for the labels. Fix DOPROFIL info in PRPLT help. Moved to 31DEC25 this date. 16349. December 29, 2025 AIPSLetter Eric The AIPSLetter for 31DEC25 is done. Saved in $AIPSPUBL the TEX, PDF, and PS.gz versions. The straight ps file is nearly 3 Mbytes. Moved everywhere in $AIPSPUBL. 16350. January 2, 2026 EVLA corrections Eric Took the file maintained by the analysts of corrections to EVLA antenna locations and saved it in AIPS as $AIPSTARS file EVLA.ant.2025. Also made a dummy VLA.ant.2025 in $AIPSTARS. Made a new 2026 file for the analysts. Moved everywhere in $AIPSTARS. 16351. January 2, 2026 RLCAL Eric Moved test on whether a model is provided outside the IF clause for single-source files. The model is required for multi- as well as single-source files. Added a test after the visibilities are copied to make sure that something was copied. Moved nowhere. 16352. January 14, 2026 ALBUS Eric Corrected # adverbs. AVERSION, PROGRAM, some of STATIONS were lost. Moved to 31DEC25 this date. 16353. January 16, 2026 KNTR Eric Subroutine FXLEVS used by all contour tasks tried to read an extra plane of data when CBCORN=5 in KNTR. That should and did fail. Moved to 31DEC25 this date. 16354. January 16, 2026 TORMAT Eric Made TORMAT an $APLSUB subroutine. Removed it from TVFLG, SPFLG, FTFLG, and PCFLG. Moved nowhere. 16355. January 20, 2026 VLBARUN, VLBAPIPE Eric Changed the RUN files and help files to handle OUTFILE blank more correctly. They were still trying to print messages to a directory that was not created properly. Moved to 31DEC25 this date. 16356. January 22, 2026 TEPLT, SNPLT Eric Changed TEPLT and SNPLT to offer another X axis type: time but with gaps mostly suppresed. Added DETIME to both to define what constitutes a gap. Moved nowhere. 16357. January 23, 2026 VPLOT, TEPLT, SNPLT Eric Added to VPLOT the X axis type of time with gaps. Changed VPLOT and SNPLT to have a second type with gaps where the first type does not label tick marks in the middle of gaps and the second type does. The labeling on such axes is difficult; it is better to have 2 choices. Moved nowhere. 16358. January 26, 2026 EXTLIST, PLGET, VPLOT Eric Changed AU2A (PLGET) for new number of adverbs in SNPLT and TEPLT. Changed AU8A (EXTLIST) for changes in SNPLT, TEPLT, and VPLOT. Changed VPLOT to reset BPARM(1) before plot file creation and noted that BPARM(4) and (5) do not work for the new times axes (but TIMERANG does). Moved nowhere. 16359. January 29, 2026 time adverbs Eric Looked at all usages of DETIME and created two new adverbs EXTIME and TIMLIMIT. Changed POPSDAT and NEWPARMS to create them and edited EXTIME, TIMLIMIT, DETIME and SOLINT help files for changed usages. Changed ALLDEST, AIPSC, ALBUS, CLNUP, NOBAT, PLAYR, and VLANT to use TIMLIMIT. Changed BSMAP and RLDLY to use SOLINT, DISKU to use PRTIME, and OFLAG, OTFBS and OTFUV to use EXTIME. The previous SOLINT in RLDLY is now more correctly called INTTIME. Moved nowhere. 16360. January 29, 2026 WETHR Eric Change DETIME to EXTIME, added XAXIS with 4 values, and DETIME to be the minimum time interval to be called a "gap". Added 3 X axis plots with gaps and 3 levels of labeling the X axis tick marks. Added code to decide the number of ticks in a gap. That value increases with the number of times not counting gaps and with gap time intervals > 1 day and decrease with the number of gaps. This number if always > 1 and < 11. Moved nowhere. 16361. January 29, 2026 TEPLT, SNPLT, VPLOT Eric Added a third level of gap tick labeling to do not labels in gaps. Added code to compute the number of ticks in a gap described above. Moved nowhere. 16362. February 2, 2026 SNBLP et al. Eric Added 3 times axes with gaps as X axis options. Improved logic plotting the descriptive string and some corner of each strip in SNBLP, TEPLT, SNPLT, and WETHER. Minor adjustements in VPLOT also. Changed AU2A (PLGET) and AU8A (EXTLIST) for changes in WETHR and VPLOT. Moved nowhere. 16363. February 3, 2026 TABED Eric Changed counting of records processed. Previously flagged records were reported as if they were flagged in the current run. Moved to 31DEC25 this date. 16364. February 6, 2026 RLDLY Eric Changed AVERT to handle the situation where baseline numbers in the BLCODE call sequence array contain only one antenna rather than two. RLDLY with REFANT=0 did this. Changed RLDLY in 31DEC26 only to refer to adverb INTTIME rather than DETIME. Moved AVERT to 31DEC25. 16365. February 9, 2026 Plot tasks Eric TEPLT to reset X axis if no gaps are found and adjust gap handling a little. Color algorithm adjsted. SNPLT as TEPLT plus correct axis labeling. WETHR correct variable name. Adjust gap handling and color algorithm. SNBLP adjust gap handling and color algorithm. Drop unused BCOUNT and correct help file. VPLOT correct plotting to account for phases outside plot until corrected by 360. Add coloring by source. Adjust gap handling and color algorithm. Also help file. Moved nowhere. 16366. February 9, 2026 BPPLT, ANBPL Eric Add the 3 X axis with gaps axes. Add DETIME to help file to set the gap interval. Add coloring by source to ANBPL. Changed both help files. Moved nowhere. 16367. February 9, 2026 EXTLIST, PLGET Eric Updated number of parameters in AU2A (PLGET) and AU8A (EXTLIST) for changes in the plot tasks above. Moved nowhere. 16368. February 11, 2026 VGLIST Eric Changed POPSDAT, NEWPARMS, and AU2A to create a new verb called VGLIST. It lists any VGNUMBERs with an existing file. Corrected some CATxLOG numbers in NEWPARMS. Moved nowhere. 16369. February 11, 2026 TE files Eric Changed DANS.INC to include a variable ALLVLB. Changed GETANT to compute the rms of the stations' latitudes and set ALLVLB true if it is greater than 0.5 degrees. Moved nowhere. 16370. February 13, 2026 VLBA RUN and PIPE Eric Changes made January 20 to handle OUTFILE blank broke things for OUTFILE not blank. Fixed typing that set a string with no close quote mark. Moved to 31DEC25 this date. 16371. February 13, 2026 Table routines Eric Changed the following to show OPCODE='FLAG' as allowed operation. Most only required an additional precursor comment. A few required changes in the code to add FLAG to go with WRIT and to use OPCODE in TABIO call. In $APLSUB: TABAN TABCCM TABCG TABCT TABFC TABFO TABFQ TABNDX TABPO TABPP TABRM TABSOU TABST TABWX TABXG TABZE In $APLNOT: IMTAB MCTAB TABBD TABBL TABBP TABBS TABCAL TABCD TABCP TABCQ TABCS TABFL TABFLG TABGC TABGP TABHF TABIM TABOB TABOF TABOTT TABPC TABPD TABSN TABSY TABTY In $APLOOP: TABLEUTIL Moved nowhere. 16372. February 13, 2026 TE files Eric Changed TABTE comments to define antenna number 0 as all. Changed TEPLT to plot antenna numbers from 0 to # antennas depending on what it finds in the TE file. Changed TECOR Fortran and help to add adverb DOALL which tells the task to compute values for every antenna individually. The VLA in A config might use this, smaller configs should set DOALL false. If ALLVLB is true, DOALL is forced to true. Changed ALBUS to set an internal TEALL for VLB and false for arrays that use only one central latitude/longitude. When creating a new TE file, records are written only when TEALL is true or the source or time change. FOR VLA data this cuts the size of the TE file by a factor of 27. The ALBUS container reports write the STEC and RM as -999 when the elevation is really low and 0 when the elevation is negative. Changed ALBUS.FOR to treat -999 as a magic blank. Changed handling of flagged SU, PO, CL table records. Made all corresponding changes in RIFRM. Moved nowhere. 16373. February 13, 2026 CHANGE.DOC Eric An issue with my old emacs fingers caused CHANGE.DOC to repeat itself 3 extra times. Moved nowhere. 16374. February 13, 2026 Doc stuff Eric Updated $HLPFIL/HLPIT.LIS the TAB completion data. ABOUT files updated: ADVERB, CALIBRAT, EDITING, GENERAL, PLOT, TASK, UV Adverb help files for changes in tasks: BCOUNT, DETIME, DOPRINT, OUTTEXT, XAXIS Help file DPARM for long line. ADVCHK to try to make it executable. Moved nowhere. 16374. February 13, 2026 Pseudoverb helps Eric Many help files for pseudoverbs identified them as verbs or in 1 case adverbs. Corrected all to pseudoverb and fiddled with typing. PROCEDUR PROC SCALAR VERB PSEUDOVB ARRAY STRING ELSE THEN IF WHILE FINISH DEBUG MSGKILL ISBATCH EDIT ENDEDIT MODIFY ERASE STORE SAVE LIST CORE RESTORE GET SCRATCH COMPRESS USAVE RUN HELP EXPLAIN APROPOS INP INPUTS SHOW GO TELL TGET TPUT SGDESTR ABORTASK WAITTASK ABOUT XHELP VGET VPUT DEFAULT OUTPUTS TUGET SGUGET OFMGET OFMSAVE Updated ABOUT files for ADVERB, PSEUDOVE, VERB. Moved nowhere. 16375. February 17, 2026 CookBook Eric Changed CookBook chapter 3 (VGLIST), 5 (CATALOG), 9 {RLDLY) and 13 (pseudoverbs and new adverbs). Chapters 0, I, J were updated. Recipe.tex also changed. Moved everywhere in AIPSPUBL. 16376. February 19, 2026 ZTKOP2, ZTQSP2 Eric Following Vincent McIntyre's (CSIRO) suggestion added # includes to $APLUNIX/ZTKOP2.C and $APLLNX64/ZTQSP2.C. His Debian required these and out LNX64 does not mind. Also changed XAS.SHR to add -fcommon to the Makefile and to define XLink as int. Moved to 31DEC25 this date. 16377. February 19, 2026 CLCOR Eric The fix I made last July for CT tables in EOPS having dates all zero broke the case where the dates ar 0, 1, 2, 3, 4. Added a loop to check if all dates are zero before the main CT table read loop. Moved to 31DEC25 this date. 16378. February 24, 2026 Z routines Eric The compiler on the ARM Mac reports various warnings. Getting rid of the annoying "defined but not used" plus some old Z routines filled with "GO TO"s in $APLGEN ZDEAX2 ZLASIO ZLWIO ZMSGCL ZMSGOP ZSHCMD ZSSSCL ZSSSOP ZTAPE ZTPCLS ZTPOPN ZTXOPN ZTXREN ZTXZAP ZVTPRC ZVTPRO ZVTVOP ZVTVRC ZVTVRO plus $APLUNIX/ZBKLD1. C routines with warnings about variable types or format codes for long long's in $APLUNIX: ZDICIO ZDKMID ZFI2 ZMI2 ZMSFI2 ZMSSRV ZONLIN ZSACPT ZSSSO2 ZTKSRV ZTPMID ZTVSRV ZVTPGC ZVTPO2 ZVTPO3 ZVTVGC ZVTVO3 plus $APLLNX64/ZDELA2 Also multiple changes in XAS.SHR for warnings. Moved nowhere. 16379. February 24, 2026 Code clean up Eric Corrected Warnings from the compiler about unused statement labels (other than 999) and modernized the code some with IF-THEN-ELSE instaed of GO TOs. In $AIPSUB AU4 AU4A AUO CATCR CHGRIP COMPIL DESCR LLOCAT SGLOCA TASKWT and in $APLSUB ANMAXA BAKLDS BATQ BLTLIS CATDIR CHKCHR CHNTIC COMOFF COORDI DAT2JD DECONV DIE DIRDEC EXTINI FILIO FILOPN GETCRD GREG GTTELL HICREA HIIO HIMERG IDWCRD JULDAY LMPIX LSERCH MAPCOP MAPCR MAPIO MINIT MSGWRT NEWPOS OPEXT PTPARM REMKEY Moved nowhere. 16380. February 25. 2026 More clean up Eric As before: in $APLSUB STCLOS TABFO TABIO TABMRG TABSOU TAPIO TICINC TIMDAT TKCURS TXTMAT VISCHK VSOLVE and in $YGEN: YCUCOR YCURSE YTVOPN YCHRW and in echo YCMULT YCOVER YGRAFX YSPLIT and in $YSUB COLOR2 IMANOT PL3VEC STARPL TVBLNK and in $YNOT PLEND PLMAKE Moved nowhere. 16381. February 26, 2026 And more Eric As 16379: In $QPSAP: QGRD6 QGRD7 In $QSUB: PASS1 PASS2 QROLL In $QNOT: CONV CONV2 CONV4 CORR FFTIM SRTIN SRTOUT UVPDIV UVUNIF and in $APLNOT: CALADJ CLSORT ERF FFTV2 FNDSPX FQMATC GACSIN GCALC GCALC1 GCALC2 GETNAN GRDSET IMSORT KEYIN PLNPUT PRTERR RESID SDCSET SDGET SOUFIL SOURNU TABAXI TABHDK TABREQ UVZRWT VISCNT Moved nowhere. 16382. February 26, 2026 PRTHI Eric Increased number of HI records for warning and quit when printing. Added counter of number HI lines printed and message at the end when none are printed (showing PRTASK and KEYSTRNG if not blank). Moved nowhere. 16383. February 27, 2026 Task clean up Eric Corrected warnings (other than 999) in tasks and misc. programs including getting rid of old-fashioned GO TO thins. Changed In $AIPPGM AJAX, SETTVP In $AIPGUNIX ZSTRTB, ZSTRTQ In $APLPGM AVTP, DRCHK, RFARS, SUMIM In $APGNOT ADDIF, CCFND, HGEOM, IMFLT, LTESS, MODVF, MULTI, PCCOR, QUOUT, SETAN, SLCOL, SNCOP, SNDUP, SNP2D, SUMSQ, TAMRG In $APGOOP COHER, DSKEW, TBTSK In $AIPNOT GR2TEX, HLPA, HLPB In $QYPGNOT EVAUV In $YPGM IMRMS, TVHLD, XGAUS, ZAMAN, ZEMAN In $YPGNOT UVRMS Moved nowhere. 16384. March 2, 2026 RLDIF Eric Updated the 3C286 polarization function and value array from Rick Perley. Added PRTLEV to request that all "expect" values of EVPA be displayed. Moved nowhere. 16385. March 4, 2026 install.pl Eric Added code after the setting of $ARCH to quit with a message if the user asjed for a binary version but the architecture is not LNX64 or MACARM. Moved nowhere this does not apply to 31DEC25. 16386. March 4, 2026 RLDIF Eric GETEXP is called both before and after making the solutions. Add code to suppress the after. Moved nowhere. 16387. March 9, 2026 RLDIF Eric Added Rick Perley's formulae for 3C286 and 3C138 plus warning messages if the freqency is below 0.5 GHz or above 50 (3C286) or 4 (3C138) GHz. Moved nowhere. 16388. March 20, 2026 BPLOT Eric Added DOWEDGE, which when DO3COLOR=2, plots a color wedge on the right hand side of the plot. Changed code to plot the antennas in the order specified in ANTENNAS when all are positive (i.e. included). Changed AU2A and AU8A for this change. Changed GTICS to do metric scaling on the maximum of Pmax, Pmin, and Pmax-Pmin. Moved right hand labels a half character. Wrote new subroutine ANLIST which makes an antenna list in the order in ANTENNAS when all are included or in numerical order leaving out the excluded ones. Moved nowhere. 16389. March 20, 2026 SPLOT Eric NEW TASK: SPLOT plots parameters from SN, CL, TY, SY, and PC tables versus time (regularly gridded or with gaps). The plot shows 1 IF and 1 polarization for a list of antennas or 1 antenna and 1 polarization for a sequence of IFs. The IFs or antennas are separated by an interval vertically. The task is basically an amalgam of SNPLT and BPLOT. Corrected a few data chacks in SNPLT as well. Changed GINIT, AU2A, and AU8A to add the new plot type (#83). Moved nowhere. 16390. March 20, 2026 Documentation Eric Changed help files for long line (OFMGET), LSAPROPO for SPLOT, PRTLEV for XYDIF, and for SPLOT: ANTENNAS BADDISK BCOUNT BIF CUTOFF DETIME DO3COLOR DOSCALE DOSCAN DOTV DOWEDGE EIF FACTOR FREQID GRCHAN INCLASS INDISK INEXT INNAME INSEQ INVERS OPCODE OPTYPE PIXRANGE QUAL SELBAND SELFREQ SOURCES STOKES SUBARRAY SYMBOL TIMERANG XAXIS XINC XYRATIO Changed ABOUT files for SPLOT: CALIBRAT PLOT TASK UV Moved nowhere. 16391. March 20, 2026 ADVCNT Eric Changed service task to list the line number and contents of the worst inputs line and help line. Moved nowhere. 16392. March 25, 2026 FTFLG Eric A typo caused the code which handles short image rows (more than 1 per kilobyte) to fail in flagging things. SPFLG did not have this bug. Moved to 31DEC25 this date. 16393. March 25, 2026 SPLOT Eric The wrong parameter was used in looping over antennas. MXANT is the maximum antenna number while NANTSL is the number of antennas in the list and so is needed most of the time. Moved nowhere. 16394. March 25, 2026 MINIT Eric Changed the error message about bad windows and image X dimension. It was too long and so wrapped on the message server. Also broke it into two to differentiate between bad initial values and bad windows when the number of pixels in rows is small (i.e. > 1 row per kilobyte). Did not relink everything; it will percolate eventually. Moved nowhere. 16395. March 27, 2026 EDITA et al. Eric Changed QEDIUTIL routine EDTIMX which converts time numbers into times. It extends a time range by half the distance to the preceeding time and to the following time. Changed it to compute those halves independantly. Previously it used the minimum of the 2 halves for both ends of the time range. Moved nowhere. 16396. April 1, 2026 LISUN Eric Dropped printing antennas that are missing, i.e. their position is all zero. Moved nowhere. 16397. April 1, 2026 EDITA Eric Added SOLINT and DETIME info to explain and help file. Moved to 31DEC25 this date. 16398. April 1, 2026 PLOTR Eric Improved display of fit parameters especially with more digits and E format. Moved nowhere. 16399. April 1, 2026 FITLD Eric Added code in subroutine BFAC to handle cases where the number of levels is greater than 4 (i.e. 16 and 256). This is coming with VNDA although it can also do 4 levels. Added a bit of info to the help file on DIGICOR. DIGICOR >= 0 is not required when the van Vleck correction is done in DiFX, but if it is not used the gains in the first ACCOR will be rather different from one. Moved nowhere. 16400. April 8, 2026 drop EXPERT Eric The EDIT class has had a "EXPERT" option that is rather complicated requiring a lot of memory should one attempt to use. Modern computers are so fast that the usual menu operations are quite fast enough. Changed EDITA, EDITR, and SNEDT to drop the EXPERT adverb. Changed help files EDITA, EDITR, EXPERT, HLPEDICL, HLPEDISN, HLPEDISS. HLPEDISY, HLPEDITS, HLPEDITY, HLPEDIUV, SCIMG, SCMAP, SNEDT, and ABOUT files ADVERB, EDITING, and GENERAL to remove the EXPERT option. The class retains to expert capability, but it is no no longer invoked. Moved nowhere. 16401. April 7, 2026 FITLD Eric On DIGICOR=2 and 4, FITLD scaled the cross-correlation data but did nothing with auto-correlation data. This destroys the usefullness of ACCOR. Changed it to scale auto-correlation data but omit the FFTs on DIGICOR=2. Moved nowhere. 16402. April 8, 2026 LISUN Eric Added the printer plot of VLA antennas (from PRTAN) and a display of the integration time (like GETITIME). Moved nowhere. 16403. April 10, 2026 LISUN Eric Removed a blank line ahead of the integration time display and made it go faster when there is an INTTIME parameter. Moved nowhere. 16404. April 10, 2026 EDITA, EDITR, SNEDT Eric Change QEDIUTIL routines as used by SNEDT so that REPLOT is not required after RESTORE and REREAD options. Added adverb EXTIME to EDITA and EDITR. The absolute value of EXTIME is the maximum allowed extension of any flag time. Values of EXTIME less than 0 extend any flag time by half the distance to the next time over all antennas. Values greater than zero, extend flag times by half the distance to the next time for the particular antenna. When doing all antennas or all antennas with one antenna (in EDITR) the extension uses the times of all antennas. Some table files have values at different times (e.g. TY for VLBA) for some antennas so this distinction is relevant. Updated HELP files EDITA, EDITR, EXTIME, SCIMG, SCMAP, HLPEDISS, HLPEDITS, and HLPEDISN. Fixed typos in HLPEDICL and HLPEDITY. Moved nowhere. 16405. April 10, 2026 XAS Eric The latest gcc pointed out a problem where many variables were defined in each subroutine file of XAS.SHR. Changed xas.h into defxas.h included only once (in xas.c). Made a new xas.h which declares all variables external that is included in each subroutine file. Moved nowhere. 16406. April 14, 2026 POLTS Eric NEW TASK: POLTS is a test program to examine the Rice bias in amplitudes, specifically for polarization but should also work for visibility amplitudes. It begins by making a list of 1000000 random numbers using the usual AIPS random number generation scheme. Then it does a loop over actual real and imaginary values and evaluates the amplitude over the 1000000 random numbers with a different starting point and stride for real (Q) and imaginary (U). It then calls the subroutine used by COMB, the subroutine used by POLCO, and a new subroutine to evaulate the Rice bias corrections. It writes a text file suitable for AIPS task PLOTR with 11 numbers for each step in polarization. The fitting capability of PLOTR was used to develop the new subroutine. The good news is that all of them work rather well with an error of about 0.004 sigma for COMB and the original routine in POLCO and a bit less (0.001 sigma) for the new routine. The bias (error) gets rather larger for S/N < 5. Moved nowhere. 16407. April 14, 2026 POLCO, COMB Eric Changed the help file for COMB to mention POLCO and this new test. Changed the HELP file and Fortran to add the new subroutine as an alternate choice (the default) in POLCO. Moved nowhere. 16408. April 14, 2026 PATGN Eric Added FLUX as a noise parameter to be added to the pattern images. Moved nowhere. 16409. April 14, 2026 PLOTR Eric Added adverb PIXRANGE to control the Y axis scale. Changed APARM(3) and APARM(4) to be a range on the X axis to be used in fitting. Previously, all data points were used in the polynomial fit even if only some of them were to be plotted. Changed AU2A (PLGET) and AU8A (EXTLIST) for the change in PLOTR adverbs. Moved nowhere. 16410. April 15, 2026 QEDIUTIL Eric Corrected two bugs. The default for EXTIME was -10 after an absolute value was taken. It is now +10 as it should be with the flag to select the method of time extensions set. The routine that did the extension interpreted antenna N with all as requiring the all antenna form of time etension. In EDITA one of the 2 antennas is always zero so the antenna form of time extension was never done. Changed this for EDITA only (not EDITR< SCMAP, SCIMG) to do the antenna based extension when one the two antennas is not zero (and that form of extension was requested). Moved nowhere. 16411. April 15, 2026 LISUN Eric A bug handling missing antennas caused the plot of antenna locations to be in error after the first missing one. Moved nowhere. 16412. April 15, 2026 PRPLT, GREYS Eric Added new meanings to DOPROFIL to plot the profile with flat tops (plus minus 0.5 pixel) and with full boxes as well as connecting the points directly. Moved to 31DEC25 April 29. 16413. April 16, 2026 QEDIUTIL Eric Changed the dummy times kept before the first real time and after the last real time to be 0.% to 2.0 times the gap time (DETIME) which is generous. Previously it was 2 to 8 times SOLINT which is very small by default. Added warning to EDITA.HLP. Moved nowhere. 16414. April 16, 2026 VPLOT Eric Fix positioning of IF string. It goes in the upper right or lower right with as the upper/lower selection of station codes. Moved nowhere. 16415. April 16, 2026 PRPLT Eric LTYPE=6 did not show the full image pixels but rather the pixel numbers relative to BLC(i). Fixed to show the original pixel numbers before BLC. Moved to 31DEC25 April 29. 16416. April 16, 2026 ISPEC, RSPEC Eric Added the ability to plot "full boxes", i.e. a flat region about each point with vertical lines all the way to the bottom of the plot. Moved nowhere. 16417. April 17, 2026 EDITA Eric Added to QEDIUTIL code to find the actual time range from the NX table when TIMERANG is fully or partially defaulted. Changed the time extending routine to work better and to limit the flags to the actual time range (user- or data-specified). Moved nowhere. 16418. April 17, 2026 EXTLIST, PLGET Eric The number of adverbs in PLOTR was changed so fixed AU2A (PLGET) and AU8A (EXTLIST) for this. Moved nowhere. 16419. April 17, 2026 IMEAN Eric Added plot types connected dots and step functions as well as the full boxes done forever. Changed DOHIST so that 1 through 3 plots image intensity on the X axis and 4 through 6 on the Y axis. Added larger numbers for axis labeling of number of pixels. Moved nowhere. 16420. April 22, 2026 FITLD Eric Changed meaning of DIGICOR so that 0 means scaling corrections only, no FFT of the auto-correlations. Also turn off the FFT when Van Vleck was done by the correlator. Changed POPSDAT and AU2A (DEFAULT verb) to default DIGICOR to 0 rather than 1. Moved nowhere. 16421. April 28, 2026 PRTAN Eric Modernized the code. Added DOPRINT adverb to allow for doing plots only. DOPRINT=0 will print. Added meanings to DOPLOT and a new VLB-centric plot on a partial or full globe in an AITOFF projection. Changed GETANT and DANS.INC to add axis offset, feed types, and feed position angle to be returned in COMMON by GETANT and displayed by PRTAN. This allows one call to GETANT to replace multiple runs reading through the AN file. Moved nowhere. 16422. April 28, 2026 Latitude, Longitude Eric Dropped the coordinate pair Ecliptic longitude and latitude (ELON, ELAT) replacing it with simply Longitude and Latitude (LONG, LATI). Changed AXSTRN, SETLOC, STINI, STOPEN, ROTFND, TKLAB, CLAB1, CLAB2, IAXIS1, and TVLAB to support this change. The new coordinate type is used by PRTAN for whole globe plots. Moved nowhere. 16423. April 28, 2026 SUBIM Eric An old image with zeros for number of points on axes 3 through 7 caused bad behavior in SUBIM. Added code to defend against this. Changed WINDOW subroutine also to protect many many tasks from this. Moved nowhere. 16424. April 29, 2026 PRPLT Eric Changed coordinate computation to correct a small issue. Added code to handle plots when the data are outside the user's PIXRANGE. Moved to 31DEC25 April 29. 16425. April ??, 2026