2 # This is gnucap2gnuplot, which is Copyright 2004 Ian Jackson.
3 # It's a script to postprocess the output from gnucap and then run gnuplot.
5 # gnucap2gnuplot and its documentation are free software; you can
6 # redistribute them and/or modify them under the terms of the GNU
7 # General Public License as published by the Free Software Foundation;
8 # either version 2, or (at your option) any later version.
10 # gnucap2gnuplot and its documentation are distributed in the hope that
11 # they will be useful, but WITHOUT ANY WARRANTY; without even the
12 # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
13 # PURPOSE. See the GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License along
16 # with this program; if not, write to the Free Software Foundation, Inc.,
17 # 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 # gnucap2gnuplot [<options>] input-file
21 # Input file should be a .cir file (will be put through gnucap)
22 # or an output file from gnucap.
23 # Produces various output files:
24 # <input-file>.gnuplots.sh run this to display results
25 # <input-file>,<Kind><N>.gnuplot-cmd gnuplot script for displaying:
26 # <input-file>,<Kind><N>-<M>.gnuplot-data gnuplot-format input data
27 # <input-file>,gnuplot-fifo working fifo for .gnuplots.sh
29 # <Kind> is Freq or Time (according to the type of analysis)
30 # <N> is the count, starting at 0, of which report this is from gnucap
31 # <M> is the individual column of Y data
35 # Only Freq (.AC) and Time (.TRAN) plots have been tested. If
36 # other types go wrong they can probably be fixed by adding code for
37 # them to startplot().
39 # Displaying voltages and currents on the same .TRAN graph won't work
40 # well because they currently have to have the same Y scale. This
41 # could be fixed by assigning carefully to $mmm in startplot().
45 # There's no easy way to mess with the gnuplot settings.
47 sub fail ($) { die "gnucap2gnuplot: $_[0]\n"; }
49 while ($ARGV[0] =~ m/^\-./) {
56 } elsif (m/^\-o(.+)$/) {
59 fail("unknown option $_\n");
64 @ARGV==1 or fail("one input file only please");
66 $ofb= $if unless defined $ofb;
67 $rungnucap= $if =~ m/\.cir$/i unless defined $rungnucap;
68 open STDIN, $rungnucap ? "gnucap -b $if |" : "< $if"
69 or fail("open $if: $!");
71 fail("cannot run gnucap on stdin, run it yourself") if $rungnucap;
72 fail("you must specify -o... when running from stdin") unless defined $ofb;
75 %facttimes= qw(f 1e-15
85 $sof= "$ofb.gnuplots.sh";
86 open A, "> $sof" or die $!;
87 system 'chmod','+x',"$sof"; $? and die $?;
97 open S, "> $ofb,$cplot.gnuplot-cmd" or die $!;
99 set data style linespoints
105 for ($yn=1; $yn<=$#columns; $yn++) {
110 if ($kind eq 'Freq') {
111 for ($yn=1; $yn<=$#columns; $yn++) {
112 die unless $columns[$yn] =~ m/.*([MP])\(\d+\)$/;
113 $mmm[$yn]= 'y2' if $1 eq 'P';
115 print S "set logscale xy\n" or die $!;
117 for ($yn=1; $yn<=$#columns; $yn++) {
118 open "O$yn", "> $ofb,$cplot-$yn.gnuplot-data" or die $!;
122 return unless defined $kind;
123 foreach $mmm (keys %min) {
124 print S "set ${mmm}range [$min{$mmm}:$max{$mmm}]\n" or die $!;
127 for ($yn=1; $yn<=$#columns; $yn++) {
128 close "O$yn" or die $!;
129 $mmm[$yn] =~ m/^y2?$/ or die "$mmm[$yn]";
130 $axes= $mmm[$yn]; $axes =~ s/^y$/y1/;
133 " '$ofb,$cplot-$yn.gnuplot-data'".
134 " axes x1$axes title '$columns[$yn]'"
138 print S "\n\npause -1\n" or die $!;
140 print A " gnuplot $ofb,$cplot.gnuplot-cmd <\$fi &\n" or die $!;
149 @columns= split /\s+/;
150 $cplot= $kind.($counter{$kind}++);
153 } elsif (!defined $kind) {
156 @numbers= split /\s+/;
157 die unless @numbers == @columns;
158 for ($yn=0; $yn<=$#columns; $yn++) {
160 if (m/^(\-?\d+\.\d*)([A-Za-z]+)$/) {
161 die "factor $2" unless exists $facttimes{$2};
162 $_= $1*$facttimes{$2};
166 $min{$mmm}= $_ unless exists($min{$mmm}) && $min{$mmm} <= $_;
167 $max{$mmm}= $_ unless exists($max{$mmm}) && $max{$mmm} >= $_;
169 printf {"O$yn"} "%s %s\n", $numbers[0], $_
177 die "no plots" unless defined $kind;
181 printf 'hit return to quit: '
187 $?=0; close STDIN; $? and fail("gnucap failed (code $?)");
188 $sof= "./$sof" unless $sof =~ m,/,;
189 print ": generated ; $sof\n" or die $!;