; TVLUT ;--------------------------------------------------------------- ;! Verb which modifies the transfer function of the image ;# VERB TV ;----------------------------------------------------------------------- ;; Copyright (C) 1995, 2008 ;; 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 ;----------------------------------------------------------------------- TVLUT LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC TVLUT: Verb which modifies the transfer function of the image NPOINTS 0.0 127.0 Number of vertices between the end points. 0 => 1. TVCHAN 0.0 16.0 TV channel(s) selection Four-decimal coded # 0 => enabled channels COLORS 0.0 3.0 Color choice (0 all, RGB 1-3) Cursor position gives position of a vertex of a piece- wise linear function. First enter all vertices in order from left to right pressing any button at the desired location. Then modify any vertices desired pressing any button to select the vertex and, when ready, any button to set the position and go on to the next. In this mode, button D exits. ---------------------------------------------------------------- TVLUT Type: Verb Use: Interactively alters the individual TV channel LUTs. The LUT function used is piece-wise linear with as many as 128 pieces allowed. The cursor is used in conjunction with TV graphics channel 3 to develop the LUT function. The cursor position controls the position of the vertex currently being modified. The program begins by requesting the specified number of vertices in sequence from left to right. Press any button to go on to the next vertex in the sequence. Then the verb allows you to alter any of the previously specified vertices. In this mode, the pressing of any button sets the current vertex. After pushing that button, move the cursor to the next vertex to be altered and push any button. Push button D to exit. Note that graphics on the TV is slow. Move the cursor slowly and wait for a plot to finish before hitting a button. Adverbs: TVCHAN......Specifies TV channel. If zero, TVLUT uses all enabled channels. COLORS......Specifies colors to be used as 0 => all, 1 => red, 2 => green, and 3 => blue. NPOINTS.....Number of vertices between the lowest input value and the highest input value (not counting the points at the ends). ----------------------------------------------------------------