My first PERL incarnation... Audio Oscillograph Post: 303038002

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Top Forums Programming My first PERL incarnation... Audio Oscillograph Post 303038002 by wisecracker on Tuesday 20th of August 2019 02:18:10 PM

08-20-2019

Registered User

Hi MadeInGermany...

I didn't try the Perl builtin 'printf' as 'print' DID support terminal colours, so I made an assumption that 'printf' wouldn't plot either.

I will experiment with plotting using 'printf' and get back to you.
If I get stuck and plotting is still unable to be done then I will come back on here for solutions.

TIA.

EDIT:
Well a cold start with the builtin 'print' DOES work but believe me, I tried for hours with hard coded valus as well is variables and I kept getting an major 'scalar' error report finally ending up saying it couldn't complie the code - hence reverting to the 'system' command.

I honestly do not know why I kept getting major errors when now it is working..

Here is the original test code i couldn't get working, but it is actually calling me a liar now.

Code:

#!/usr/bin/perl
# plotter.pl

use warnings;
use strict;

# Centre of terminal window.
my $horiz=34;
my $vert=11;
my $plotter="\033["."$vert".";"."$horiz"."fHello World.\n";
print "$plotter";

And finally I am in the process of using 4 capture modes, DEMO, DSP, ALSA and QT, (DEMO is obviously working using the builtin random number generator but the final cut will create a raw 'noise' file using /dev/urandom).
I have already done the section to create the AppleScript and call it, but not done the binary file to byte sized decmial array or list yet but I am working on it...

Last edited by wisecracker; 08-20-2019 at 03:58 PM.. Reason: See EDIT:

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LEARN ABOUT BSD

plot

PLOT(1G)																  PLOT(1G)

NAME

       plot - graphics filters

SYNOPSIS

       plot [ -Tterminal ] [ -rresolution ] [ files... ]

DESCRIPTION

       These  commands	read  plotting	instructions (see plot(5)) from the standard input or the specified files, and in general produce plotting
       instructions suitable for a particular terminal on the standard output.	The -r flag may be used to specify the device's output	resolution
       (currently only the Imagen laser printer understands this option).

       If no terminal type is specified, the environment parameter $TERM (see environ(7)) is used.  Known terminals are:

       4013   Tektronix 4013 storage scope.

       4014 or tek
	      Tektronix  4014  or  4015  storage  scope  with Enhanced Graphics Module.  (Use 4013 for Tektronix 4014 or 4015 without the Enhanced
	      Graphics Module).

       450    DASI Hyterm 450 terminal (Diablo mechanism).

       300    DASI 300 or GSI terminal (Diablo mechanism).

       300S   DASI 300S terminal (Diablo mechanism).

       aed    AED 512 color graphics terminal.

       bitgraph or bg
	      BBN bitgraph graphics terminal.

       imagen or ip
	      Imagen laser printer (default 240 dots-per-inch resolution).

       crt    Any crt terminal capable of running vi(1).

       dumb   Dumb terminals without cursor addressing or line printers.

       vt125  DEC vt125 terminal.

       hp2648 or hp or hp8
	      Hewlett Packard 2648 graphics terminal.

       ver    Versatec D1200A printer-plotter.

       var    Benson Varian printer-plotter.

	      These versions of plot use the -g option of lpr(1) to send the result directly to the plotter device rather  than  to  the  standard
	      output.

FILES

       /usr/bin/t4013
       /usr/bin/tek
       /usr/bin/t450
       /usr/bin/t300
       /usr/bin/t300s
       /usr/bin/aedplot
       /usr/bin/bgplot
       /usr/bin/crtplot
       /usr/bin/dumbplot
       /usr/bin/gigiplot
       /usr/bin/hpplot
       /usr/bin/implot
       /usr/ucb/lpr

SEE ALSO

       plot(3X), plot(3F), plot(5), lpr(1)

7th Edition							September 21, 1985							  PLOT(1G)