; ISPEC ;--------------------------------------------------------------- ;! Plots and prints spectrum of region of a cube ;# TASK PLOT SPECTRAL HARDCOPY ;----------------------------------------------------------------------- ;; Copyright (C) 1995-1996, 1999-2000, 2004, 2009-2012, 2014 ;; 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 ;----------------------------------------------------------------------- ISPEC LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC ISPEC : Task to plot spectrum of a specified portion of an image USERID -32000.0 32000.0 User ID. ignored INNAME Image name (name) INCLASS Image name (class) INSEQ 0.0 9999.0 Image name (seq. #) INDISK 0.0 9.0 Disk drive # BLC 0.0 4096.0 Bottom left corner of image 0=>entire image TRC 0.0 4096.0 Top right corner of image 0=>entire image OPTYPE 'FLUX','LGFL','LNFL', 'FDER' 'AVER','LGAV','LNAV', 'ADER' PIXRANGE Range of intensities to plot ZINC -8192.0 8192.0 Increment on freq axis. < 0 => invert Z axis in plot SMOOTH Frequency smoothing function LTYPE -410.0 410.0 Type of labeling: 1 border, 2 no ticks, 3 standard, 4 rel to center, 5 rel to subim cen 6 pixels, 7-10 as 3-6 with only tick labels <0 -> no date/time DOCENTER -1.0 1.0 > 0 => plot with box-like lines, else plot line to points DOTV -1.0 1.0 > 0 Do plot on the TV, else make a plot file GRCHAN 0.0 8.0 Graphics channel 0 => 1. DOPRINT -3.0 132.0 > 0 => use the terminal, 0 => no output, < 0 => printer or file, > 72 => terminal width OUTPRINT Printer disk file to save DOSLICE -1.0 2.0 > 0 => save as SLice file XYRATIO 0.0 Stretch the X axis wrt Y axis 0 -> 1.33 FACTOR Scale xDER plots; 0 -> 1 ---------------------------------------------------------------- ISPEC Type: Task Use : Task to plot and print the average brightness or flux of an area in the first two axes of an image as a function of location on the third axis of an image. For example, this is a quick way to display a single spectrum per point or area and avoids the use of TRANS. The user can determine the area for which he wishes to know the spectrum by using the verb TVWIN followed by GO ISPEC. The spectrum will be placed in a plot file and can be displayed with the display task of the user's choice. To obtain spectra for each pixel over a given area the user should use TRANS and PLCUB. Note that the third axis does not have to be a spectral-line axis - all standard axis types are allowed. (If the first 2 axes are not celestial coordinates, then the conversion from Jy/beam to Jy for OPTYPE 'FLUX' cannot be done, however.) If the third axis is FQID, the plots made will be adjusted to a frequency axis with points placed appropriately. Slices made will be interpolated onto a regular frequency grid. For plots over irregular regions, specified using a "botch" image, see task BLSUM. Adverbs: USERID......User ID of owner of image. Ignored. INNAME......Image name(name). blank => any INCLASS.....Image name(class). blank => any INSEQ.......Image name(seq. #). 0 => any INDISK......Disk drive # of image. 0 => any BLC.........The Bottom Left-hand pixel of the subarray of the image to be plotted. The value (0,0,...) means (1,1,1,1,1,1,1). TRC.........The Top Right-hand pixel of the subarray of the image to be plotted. The value (0,0,...) means the top right hand corner of the entire image. OPTYPE......'FLUX' => plot and print the sum of the valid intensities in the subarray, converted to Jy from Jy/beam in Clean images. 'LGFL' => like FLUX but vertical scale in log base 10 'LNFL' => like FLUX but vertical scale in log base e 'AVER' => plot and print the average intensity. 'LGAV' => like AVER but vertical scale in log base 10 'LNAV' => like AVER but vertical scale in log base e 'FDER' => like FLUX but output is derivative out(i) = (flux(i+1)-flux(i)) * FACTOR 'ADER' => like AVER but output is derivative out(i) = (aver(i+1)-aver(i)) * FACTOR otherwise => AVER PIXRANGE....Range of pixel values to plot; values below PIXR(1) are set to PIXR(1), values above PIXR(2) are set to PIXR(2). PIXR(1) >= PIXR(2) implies use the full range of pixel values in the image. ZINC........Increment between plotted pixels on 3rd axis. If < 0, abs(ZINC) is used and the Z axis is inverted when listing and plotting. SMOOTH......Specifies the type of spectral smoothing to be applied to a uv database . The default is not to apply any smoothing. The elements of SMOOTH are as follows: SMOOTH(1) = type of smoothing to apply: 0 => no smoothing To smooth: 1 => Hanning, 2 => Gaussian, 3 => Boxcar, 4 => Sinc 5 => Hanning, 6 => Gaussian, 7 => Boxcar, 8 => Sinc SMOOTH(2) = the "diameter" of the function, i.e. width between first nulls of Hanning triangle and sinc function, FWHM of Gaussian, width of Boxcar. Defaults (if < 0.1) are 4, 2, 2 and 3 channels for SMOOTH(1) = 1 - 4 and 5 - 8, resp. SMOOTH(3) = the diameter over which the convolving function has value - in channels. Defaults: 1,3,1,4 times SMOOTH(2) used when input SMOOTH(3) < net SMOOTH(2). 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. DOCENTER....False (<= 0) means to draw plot lines between the data points of the "spectrum" producing a jagged looking plot. True (> 0) means to plot 1-channel horizontal lines centered on each data point and connected to adjacent points by vertical lines producing a histogram-like plot. 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. 0 => 1. DOPRINT.....False (<= 0) use the line printer if OUTPRINT = ' ' else write named OUTPRINT file only. When OUTPRINT is not blank, DOPRINT=-2 suppresses the page-feed character on page headers and DOPRINT=-3 suppresses page headers and most other header information. True (> 0) use the terminal interactively. The task will use the actual terminal width as a display limit unless 72 < DOPRINT < width. In that case, the display limit will be DOPRINT characters. OUTPRINT....Disk file name in which to save the line printer output. ' ' => use scratch and print immediately for interactive jobs - batch jobs use OUTPRINT = 'PRTFIL:BATCHjjj.nnn' (jjj= job #, nnn = user #). When OUTPRINT is not blank, multiple outputs are concatenated, and the file is not actually printed. DOSLICE.....> 0 => save the spectrum as a SLice file suitable for the usual plotting and fitting done on slices. XYRATIO.....The ratio of the axes X to Y in the plot. 1.0 makes a square plot. 0 -> 1.3 (about the usual ratio of X to Y on the TV screen or A format paper). FACTOR......Scale factor for ADER and FDER plots only; 0.0 -> 1.0. Used to adjust units from Jy/channel to Jy/(km/s) or other things as needed. Can reverse sign. ----------------------------------------------------------------