; PCEDT ;--------------------------------------------------------------- ;! Interactive TV task to edit pulse-cal (PC) tables ;# TASK UV CALIBRATION EDITING TV-APPL INTERACTIVE OOP VLBI ;----------------------------------------------------------------------- ;; Copyright (C) 2016-2017 ;; 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 ;----------------------------------------------------------------------- PCEDT LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC PCEDT: PC-table graphical editor INNAME Input UV data (name) INCLASS Input UV data (class) INSEQ Input UV data (seq. #) INDISK Input UV data disk drive # INVERS Input table file version no. FREQID -1.0 Frequency ID; 0 => 1 SUBARRAY 0.0 Subarray number 0 => 1. TIMERANG Time range to include BIF First IF to include EIF Last IF to include ANTENNAS Antennas to include/exclude DOHIST -10.0 1.0 Record flags in history file ANTUSE 0.0 90.0 Initial displayed antennas ---------------------------------------------------------------- PCEDT Type: Task Use: To edit PC-table data by examining the PC table spectra. The chosen observable, i.e,. amplitudes, phases, or residual phases (after a fit delay and phase are subtracted) for an antenna is displayed as a function of spectral channel in an edit window. You may view the entire channel range or select more detailed channel ranges interactively. A second observable for the same antenna is displayed over the same channel range in a window above the edit window. Data in the primary observable for 0 to 10 other antennas may be displayed over the same channel range in windows above these on the TV screen. This display is controlled interactively. A menu-like control interface is available to select the antenna and time range to be edited and to select various forms of editing. PCEDT creates a Flag Command file attached to the input UV data file. If one already exists - due to a prior power failure or program failure - it will be used. This is a bit dangerous and should be done only if the data selection adverbs have the values they had when the FC file was created. Adverbs: INNAME.....Input UV data file (name). Standard defaults. INCLASS....Input UV data file (class). Standard defaults. INSEQ......Input UV data file (seq. #). 0 => highest. INDISK.....Input UV data file disk drive #. 0 => any. INVERS.....Input table file version number, 0 -> current highest. The input file is copied and sorted to a new version. If flags are actually prepared, the new version is changed to reflect the flagging and kept; otherwise it is deleted. FREQID.....Frequency ID to edit. 0 => 1. SUBARRAY...Subarray number to edit. 0 => 1. TIMERANG...Time range of the data to be edited. In order: Start day, hour, min. sec, end day, hour, min. sec. Days are relative to the reference date. BIF........The lowest numbered IF to include. 0 => 1. EIF........The highest numbered IF to include. 0 =>highest. Note: not all data sets will have IFs. ANTENNAS...A list of antenna numbers to include. 0 => all. DOHIST.....> 0 => record task execution and flagging info in the history file (this can be a lot!). <= 0.0 means to omit the flagging info and <= -9.5 means to omit the execution information as well. ANTUSE.....Lists the antennas to appear in the initial display: antenna ANTUSE(1) is the initial edit antenna and ANTUSE(2) through ANTUSE(11) are the comparison antennas. The default is equivalent to ANTUSE=1,2,3 (or whatever are the 3 lowest numbered antennas). ------------------------------------------------------------------------ PCEDT is a TV graphic editor for PC-table data using the data of the table. It works with the XAS-TV display graphics (and image) planes to allow you to flag the table data based on values in the selected table. PCEDT attempts to read the entire table into dynamic memory when it starts up. If it cannot fit all the data, it attempts to read just one IF at a time. In that case, when you switch IFs, PCEDT reads in the next IF. PCEDT will tell you as it starts whether "All data will reside in memory" or "Will do only one IF in memory at a time". The SWITCH ALL IF option will not appear in the latter case. There are 5 parts to PCEDT's display: (1) A menu of operations displayed in two columns, one each at the left and right sides of the screen. When the menu is displayed, move the cursor to the desired item and press buttons A, B, or C. To get on-line help in the message window about a given option, move the cursor to the desired menu item and press button D. (2) A plot at the bottom of the screen in a bright color (usually) of the data which may be actively edited at present. It is of the chosen type for the selected antenna, polarization(s), and IF(s). Flagged data are shown in a different color. The frequecy range of the frame may be made small to expand the frequency axis, but may also be made so large as to cause serious crowding of the plotted data points. (Increase your XAS window width to increase the plot scale.) (3) A plot above the edit area plot in the same bright color of the data from the selected antenna, polarization(s), and IF(s). This plot is in a second observable (e.g. if amplitude is in the edit plot, phase is the second observable). Data in this second area may not be used for editing but should be helpful in choosing which data to delete in the edit area. Flagged data are shown in a different color. This plot may be suppressed by adverb DOTWO. (4) 0-10 plots of data of the current data type, polarization(s), and IF(s) for a list of 0-10 other antennas are shown above the second plot. They are shown for comparison using another color, while flagged data are shown in a different color. (5) Several text areas also appear including (a) the IF numbers in the current frame's frequency axis, (b) the selected data type, IF, and polarization at the bottom of the screen, (c) the antenna shown in each plot at the top right of each plot, (d) the current time and all-IF, all-polarization, and all-antenna flags, (e) the y-axis tick values on each of the frame plots, and (f) while interactively setting channel and/or value ranges, the channel/IF and value to which you are currently pointing and the associated source name. You may change the size of the XAS window at any time. PCEDT will not allow it to become too small, but will adjust its display for all reasonable sizes. The left-hand menu can contain ------------------- | FLAG CHANNEL | To delete one channel at a time. | FLAG CHAN RANGE | To delete one or more channel ranges. | FLAG BELOW | To delete all displayed times with data below a cutoff value. | FLAG ABOVE | To delete all displayed times with data above a cutoff value. | FLAG AREA | To delete one or more areas in the data-value - time plane. | FLAG POINT | To delete one sample at a time using both horizontal and vertical cursor position. | FLAG QUICKLY | To delete samples using only mouse clicks | ENTER AMPL RNG | To select the display range for amplitude plots. Use 0 -1 for 0 to antenna maximum and 0 0 for min to max. | ENTER PHASE RNG | To select the display range for phase plots. | ENTER RESID RNG | To select the display range for RESIDUAL phase plots. | LIST FLAGS | To list all flags now in the Flag Command table. | UNDO FLAGS | To undo one of the flag operations in the FC table | REDO FLAGS | To reapply all remaining flags after one or more have been undone (see note below) | REDO DELAYS | To solve for delay and phase to compute the residuals taking into account current flagging | TV ZOOM | To alter the display zoom used while in the flag functions. | OFF ZOOM | To turn off any zooming. | HOLD TV LOAD | To stop updating the TV display with every change of parameter; change several, then select | DO TV LOAD | To update the TV display now and with each change of display parameter. | REPLOT | To do the current plot over again, recomputing the differences from the running mean if appropriate. | EXIT | To exit PCEDT, writing the flagging information in the output flag table. | ABORT | To exit PCEDT, deleting the the FC table ------------------- The right-hand menu can contain ------------------- | SWITCH POLARIZ | To switch to viewing and editing the other polarization (can cycle through all). | SWITCH ALL POL | To switch functions from applying to one polarization to applying to both polarizations or vice versa. | SWITCH ALL TIME | To switch FLAG ABOVE and FLAG BELOW between all times and the time range of the frame | SWITCH ALL SOURC| To switch between flagging the current source and all sources. | SWITCH ALL ANT | To switch functions from applying to one antenna to applying to all antennas or vice versa. | ENTER ANTENNA | To select the antenna to be displayed at the top and in the edit area and to be edited. | ENTER OTHER ANT | To select up to 10 other antennas to be displayed; enter 10 numbers, 0's are then ignored (to plot 5 enter the 5 plus 5 0's) | NEXT ANTENNA | To select an antenna one higher than the currently selected antenna | PLOT ALL CHANNEL| To display and edit data for all channels. | SELECT FRAME | To select a window into the current data interactively. | NEXT FRAME | To select the next channel range window. | PREVIOUS FRAME | To select the previous channel range window. | SELECT IF | To select a single IF to display and edit by typing its number into the terminal window | NEXT IF | To select the next higher IF to display and edit | LAST IF | To select the next lower IF to display and edit | NEXT TIME | To select the next higher time to display and edit | LAST TIME | To select the next lower time to display and edit | SHOW AMPLITUDE | To display and edit using amplitudes | SHOW PHASE | To display and edit using phases. | SHOW RESID | To display and edit using residual phases. | SHOW ALSO AMP | To display amplitudes in the second plot area | SHOW ALSO PHASE | To display phases in the second plot area | SHOW ALSO RESID | To display residual phases in the second plot area ------------------- The menus will not show all of these options every time. The HOLD TV LOAD option is shown until invoked, and then is replaced with the DO TV LOAD. When that is invoked, the HOLD TV LOAD option reappears. The SWITCH POLARIZ and SWITCH ALL POL options appear only if there are two polarizations in the BP table. The only SHOW options to appear are for those not already displayed. The SHOW xxx and SHOW ALSO xxx items appear as appropriate. The pulse-cal spectra are fit for delay and phase when the PC table is read and residual spectra are computed. They are not automatically recomputed when data are flagged. You can request the task to recompute the residuals at any time -- do it after flagging some bad data. Note that value-dependent flagging (FLAG BELOW, ABOVE, AREA) uses the values currently plotted to make a list of value-independent flag commands (i.e., a single channel and time for the specified antennas, IFs, polarizations, etc.). When a value-dependent FLAG operation is undone (UNDO FLAGS) or redone (REDO FLAGS), it is these value-independent flags which are undone or redone. You may have to undo more commands and then repeat FLAG commands to get the results you could have gotten by doing the now desired value-dependent command in the first place. You need also to be careful with the SWITCH ALL ANT setting with these value-dependent commands. If one antenna is set, then the commands only apply to the current antenna. If all antennas is set, the commands apply to all antennas. The first two set a clip level, below or above which data are deleted, based on the value of the observable in each antenna independently. The FLAG AREA command, however, only looks at the values of the observable in the main edit antenna and flags those samples from all applicable antennas. Be careful when choosing EXIT versus ABORT. The former applies the flag commands to the output PC table attached to the input uv data, the latter causes the flag commands and the output PC table to disappear without a trace. The colors used by PCEDT are those of the various graphics planes when it begins to run. You may change them with the AIPS verb GWRITE to more desirable colors. The planes are: Plane Default RGB Use 1 1.00 1.00 0.00 Main editing and secondary windows 2 0.06 1.00 0.00 Comparison antenna data windows 3 1.00 0.67 1.00 Menu highlight 4 0.00 1.00 1.00 Edit and frame window boundaries 5 1.00 0.18 0.18 Flagged data in all windows 6 0.60 0.60 1.00 Menu foreground 7 1.00 0.80 0.40 unused You may wish to change the colors to ones that you can see better. ------------------------------------------------------------------------