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 V7

plot

PLOT(1G)																  PLOT(1G)

NAME

       plot - graphics filters

SYNOPSIS

       plot [ -Tterminal [ raster ] ]

DESCRIPTION

       These  commands read plotting instructions (see plot(5)) from the standard input, and in general produce plotting instructions suitable for
       a particular terminal on the standard output.

       If no terminal type is specified, the environment parameter $TERM (see environ(5)) is used.  Known terminals are:

       4014   Tektronix 4014 storage scope.

       450    DASI Hyterm 450 terminal (Diablo mechanism).

       300    DASI 300 or GSI terminal (Diablo mechanism).

       300S   DASI 300S terminal (Diablo mechanism).

       ver    Versatec D1200A printer-plotter.	This version of plot places a scan-converted image  in	`/usr/tmp/raster'  and	sends  the  result
	      directly	to  the  plotter device rather than to the standard output.  The optional argument causes a previously scan-converted file
	      raster to be sent to the plotter.

FILES

       /usr/bin/tek
       /usr/bin/t450
       /usr/bin/t300
       /usr/bin/t300s
       /usr/bin/vplot
       /usr/tmp/raster

SEE ALSO

       plot(3), plot(5)

BUGS

       There is no lockout protection for /usr/tmp/raster.

																	  PLOT(1G)