USERID -32000.0 32000.0 File owner - ignored INNAME Input file name (name) INCLASS Input file name (class) INSEQ 0.0 9999.0 Input file name (seq. #) INDISK 0.0 9.0 Input file disk unit # INEXT Input table type. INVERS 0.0 46655.0 Input table version #. BCOUNT 0.0 99999.0 Beginning row in plot ECOUNT 0.0 99999.0 Last row in plot: 0 => end XINC 0.0 9999.0 Increment between plotted rows DOHIST -3.0 1.0 Plot as histogram FACTOR Scale plotted points < 0 => connect with lines APARM Column selection parameters: 1: X-axis col A, no default 2: X-axis col A subscript 3: X-axis col B, no default 4: X-axis col B subscript 5: X-axis function type SEE the HELP ! 6: Y-axis col A, no default 7: Y-axis col A subscript 8: Y-axis col B, no default 9: Y-axis col B subscript 10: Y-axis function type BPARM Control parameters 1 : Number of bins in plot 2 : Print binned results? 3 : > 0.0 => fixed scale < 0.0 => fixed range 4 : Xmin (fixed scale) 5 : Xmax (fixed scale) 6 : Ymin (fixed scale) 7 : Ymax (fixed scale) 9: Exponent for X-axis 10: Exponent for Y-axis CPARM 1: X-axis col A factor 2: X-axis col A offset 3: X-axis col B factor 4: X-axis col B offset 5: Y-axis col A factor 6: Y-axis col A offset 7: Y-axis col B factor 8: Y-axis col B offset 9: X-axis overall factor 10: X-axis overall offset RPARM Limit plot to rows matching (1) column, (2) subscript, (3) value, (4) allowed mismatch, (5-8) 2nd test (9-12) 3rd test, etc. KEYSTRNG String to match DOINVERS -1.0 1.0 > 0 print if not match, else print only if match LTYPE -410.0 410.0 Type of labeling: 1 border, 2 no ticks, 3 - 6 standard, 7 - 10 only tick labels <0 -> no date/time DOTV -1.0 1.0 > 0 Do plot on the TV, else make a plot file GRCHAN 0.0 88.0 Main graphics channel + 10 * label graphics chan

TAPLT Type: Task Use: Plots data from an AIPS table-format extension file. Adverbs: USERID.....Input file user number. Ignored. INNAME.....Input file name (name) Standard defaults. INCLASS....Input file name (class) Standard defaults. INSEQ......Input file name (seq. #) 0 => highest. INDISK.....Disk drive # of input file. 0 => any. INEXT......Type of input table extension. ' ' = 'CC' INVERS.....Version number of table extension. 0 => highest. BCOUNT.....Beginning row number to be included in plot. 0 = 1. ECOUNT.....Ending row number included in plot. 0 = highest. XINC.......Increment in row number between rows included in plot. 0 => 1. DOHIST.....> 0 => plot as histogram in the X-axis parameter. <= 0 plot two columns against each other. FACTOR.....Scales plotted points by ABS (FACTOR) 0 -> 1 < 0 => histogram, binned plots done with connected lines as well as points APARM......Column selection parameters: 1 = X-axis logical column number A: 0 => row number. < 0 => use absolute value of col. abs(APARM(1)) 2 = The subscript of the X-axis column A data to use if the column is an array. 0 => 1. 3 = X-axis logical column number B: 0 => row number. < 0 => use absolute value of col. abs(APARM(1)) 4 = The subscript of the X-axis column B data to use if the column is an array. 0 => 1. 5 = X-axis function number: Various functions may be performed on column A only or on a pair of columns A and B before plotting. Functions which use column A only are 0 = no function, 1 = sum, 2 = asin, 3 = Log10, 4 = ln, 5 = exp, 6 = sin, 7 = cos, 8 = tan, 9 = atan. In these cases, APARM(3) and (4) are ignored. Sum includes those rows which are not plotted due to XINC and BCOUNT. Functions which use both columns are 10 = +, 11 = -, 12 = *, 13 = /, 14 = **, 15 = mod, 16 = Modulus, 17 = atan2, 18 = max, and 19 = min. The atan, atan2 return results in degrees. 6 = Y-axis logical column number A: as for X-axis. 7 = The subscript of the Y-axis column A data to use if the column is an array. 0 => 1. 8 = Y-axis logical column number B: as for X-axis. 9 = The subscript of the Y-axis column B data to use if the column is an array. 0 => 1. 10 = Y-axis function number: as for X-axis. The Y-axis parms 6-9 are ignored if DOHIST > 0. APARM(10) will be used for the histogram counts if it is 2 = sqrt, 3 = log10, or 4 = ln. Otherwise it is ignored too. BPARM......Plot control parameters: 1 = If DOHIST > 0, the number of bins in the histogram (0 => 50). If DOHIST <= 0 and BPARM(1) > 0, the plot will be of bin averages in X of the specified quantity. There will be BPARM(1) number of bins in the plot. For bins with more than 2 samples the vertical height of the symbol represents the standard deviation of the mean of the distribution in the bin. In this case, 0 means to plot all points rather than the binned average. BPARM(1) < 0 means to plot the sum in abs(BPARM(1)) bins rather than the average. 2 = If DOHIST <= 0 and BPARM(1) > 0 and BPARM(2) > 0, the bin averages will be printed in the message file at message level 4. 3 = If greater than zero, use BPARM(4) - BPARM(7) as the ranges of the axes. If less than zero, use the BPARMs to limit the range of the axes, but self-scale the axes within that range. If 0.0, fully self-scaling. 4 = Minimum of X-axis. 5 = Maximum of X-axis (if = BPARM(4) do self-scale in X). 6 = Minimum of Y-axis. 7 = Maximum of Y-axis (if = BPARM(6) do self-scale in Y). 9 = The exponent to which to take the X-axis result value before plotting. 0 => 1. 10 = The exponent to which to take the Y-axis result value before plotting. 0 => 1. CPARM......After the value or absolute value of a column is found, it may be scaled and offset before other functions are applied to it. 1 = X-axis logical column number A scale factor: 0 -> 1. 2 = X-axis logical column number A offset. 3 = X-axis logical column number B scale factor: 0 -> 1. 4 = X-axis logical column number B offset. 5 = Y-axis logical column number A scale factor: 0 -> 1. 6 = Y-axis logical column number A offset. 7 = Y-axis logical column number B scale factor: 0 -> 1. 8 = Y-axis logical column number B offset. 9 = X-axis overall factor, 0 -> 1. 10 X-axis overall offset - after all other scaling, powers, etc. are applied the X value is multipled by CPARM(9) and CPARM(10) is added. You can also limit the plot to include those rows which match or which do not match specified values. RPARM......(1-4) 1st test column, subscript, value, allowed error (5-8) 2nd test column, subscript, value, allowed error (9-12) 3rd test column, subscript, value, allowed error etc. up to 7 tests all of which are ANDed. KEYSTRNG...One test may be on character-valued column which must match this adverb - the match is checked only to the number of characters given in KEYSTRNG. Thus, for example, KEYSTR='RFLAG:'; DOINV 1; RPARM = 9,1 will include only those flags not generated by RFLAG ignoring the times shown in the RFLAG reasons when printing a flag table. DOINVERS...<= 0 => include only those rows match tests 1, 2, etc. (how many of them have values) > 0 => include only those that do not match LTYPE.......Labelling type, see HELP LTYPE for details: 1 = border, 2 = no ticks, 3 or 7 = standard, 4 or 8 = relative to ref. pixel, 5 or 9 = relative to subimage (BLC, TRC) center, 6 or 10 = pixels. 7-10 all labels other than tick numbers and axis type are omitted. Less than 0 is the same except that the plot file version number and create time are omitted. Add n * 100 to alter the metric scaling. DOTV........> 0 => plot directly on the TV device, otherwise make a plot file for later display on one or more devices (including the TV if desired). GRCHAN.....Graphics channel (1 - 7) to use for line drawing. A value of 0 causes more than one graphics channel to be used. To specify a channel to be used for plot labels add 10 * that graphics channel number. If the label channel is zero, it is set to GRCHAN. Use this to make labels 1 color and plot multiple plots on top of each other using different GRCHANs. Note if one of the GRCHAN (lower digits) is to equal the label channel, then that must be the last of the overplots since the graphics channel is cleared before making the labels. Do not use the label channel if you plan to use TVCPS and specify the label channel there as well. Note that channels 5, 6, and 7 are usable for labels and are not useful for overplotting.

Examples: A Clean Component extension has flux in column 1 and delta X in column 2 and Delta Y in column 3. To plot the fluxes versus radius from the center, self-scaling the plot with no scaling of column values INEXT = 'CC'; XINC 1 APARM = 2, 1, 3, 1, 16, 1, 1 BPARM = 0 CPARM = 0 The APARM selects column 2 subscript 1 and column 3 subscript 1 to be operated on by the modulus function [sqrt (a*a + b*b)] as the X plot parameter and column 1 subscript 1 to be the Y plot parameter. One could bin the results by setting DOHIST = 1 and choosing the number of bins with BPARM(1). To plot a histogram of phases from an SN table INEXT = 'SN'; XINC 1 DOHIST = 1 APARM = 11, 0, 10, 0, 17 BPARM = 45, 0, 1, -45, 45 CPARM = 0 does the plot for the first IF and first polarization. Column 11 has the imaginary part, column 10 the real part and function 17 is ATAN2. The results are binned in 45 bins from -45 to 45 degrees. To plot the SY table, consider SNPLT first. In an SY table, column 1 is time, column 3 is source, column 4 is antenna, column 7 is RR Pdif, column 8 is RR Psum, column 10 is LL Pdif, and column 11 is LL Psum. To plot Psys RR versus Psys LL (Psys = 0.5*Psum/Pdif * Tcal) you will have to look up the Tcals in the CD table. Then INEXT = 'SY'; XINC 1 APARM 8,n,7,n,13, 11,n,10,n,13 BPARM 0 CPARM 0; CPARM(9) ~ TcalR/2, TcalL/2 RPARM 4,1,Ant,0.1 where n is the desired IF (spectral window) and Ant is the desired antenna. A simpler plot would be, e.g. Psum on the X axis and Pdif on the Y for RR: APARM 8,n,0,0,0, 7,n,0,0,0 BPARM=0 CPARM=0 RPARM 4,1,Ant,0.1 or RPARM=0 for all antennas.