זהו קובץ מתוך ויקישיתוף וניתן להשתמש בו גם במיזמים אחרים.
תיאורו בדף תיאור הקובץ שלו מוצג למטה.
תקציר
תיאורE12 values graph.svg
English: Graph showing values of the E12 series, which is used to standardize values of resistors and capacitors. The values shown cover two decades of the series, from 1 to 82, and illustrate the exponential nature of the series.
Bitmap version showing the same data, but with superfluous labels, making it not language neutral: Image:E12_values_graph.png
רישיון
Public domainPublic domainfalsefalse
היצירה הזאת שוחררה לנחלת הכלל על־ידי היוצר שלה, Qef. זה תקף בכל העולם.
יש מדינות שבהן הדבר אינו אפשרי על פי חוק, אם כך: Qef מעניק לכל אחד את הזכות להשתמש ביצירה הזאת לכל מטרה, ללא שום תנאי, אלא אם כן תנאים כאלה נדרשים לפי החוק.
Source code
This graph was generated by the Perl program below, which was specially written for the purpose. If changes need to be made, it's probably best to tweak the program and re-run it to get a new version, rather than editing the SVG directly.
use warnings;
use strict;
# The E12 series twice over, the first time divided by 10.
my @VALUES = qw(
1.0 1.2 1.5 1.8 2.2 2.7 3.3 3.9 4.7 5.6 6.8 8.2
10 12 15 18 22 27 33 39 47 56 68 82
);
# Parameters to set appearance.
my $AXIS_HT = 400;
my $VERT_SCALE = 4.5;
my $BAR_WIDTH = 20;
my $BAR_GAP = 3;
my $MARGIN = 10;
my $img_wd = ($BAR_WIDTH + $BAR_GAP) * @VALUES + $BAR_GAP + 2 * $MARGIN;
my $img_ht = $AXIS_HT + 2 * $MARGIN;
my $margin_right = $img_wd - $MARGIN;
my $margin_bottom = $img_ht - $MARGIN;
my $x = $MARGIN;
my $graph_path = '';
my $text_cmds = '';
for (@VALUES) {
$x += $BAR_GAP;
my $bar_ht = $_ * $VERT_SCALE;
$graph_path .= "M$x,$margin_bottom v-$bar_ht h$BAR_WIDTH v$bar_ht Z\n";
$x += $BAR_WIDTH;
my $bar_top = $img_ht - $bar_ht - $MARGIN + -5;
my $txt_x = $x - 0.5 * $BAR_WIDTH + 4.5;
$text_cmds .= " <text transform='translate($txt_x,$bar_top) rotate(270)'" .
" x='0' y='0' fill='#000' text-anchor='start'>$_</text>\n";
}
print <<"END";
<?xml version="1.0" encoding="UTF-8"?>
<svg version="1.0" width="$img_wd" height="$img_ht"
xmlns="http://www.w3.org/2000/svg">
<defs>
<linearGradient id="grad" x2="0%" y1="0%" y2="100%">
<stop offset="5%" stop-color="#F00" />
<stop offset="95%" stop-color="#F90" />
</linearGradient>
</defs>
<path stroke="#000" stroke-width="1" fill="none"
d="M$MARGIN,$MARGIN V$margin_bottom H$margin_right"/>
<path stroke="#000" stroke-width="0.6" fill="url(#grad)" d="$graph_path"/>
<path stroke="#333" stroke-width="0.6" fill="url(#grad)" d="$graph_path">
</g>
</svg>
END
{{Information |Description={{en|1=Graph showing values of the E12 series, which is used to standardize values of resistors and capacitors. The values shown cover two decades of the series, from 1 to 82, and illustrates the exponential nature of the serie