我正在使用Perl的GD::Graph
用于绘制信号轮廓的模块。我已经设法让几乎所有东西都看起来正确，除了由于某种原因在y轴和第一个绘制点之间存在刺激性和不需要的间隙。我该怎样消除这个？
以下是我编写的测试页面的代码（它显示在我的localhost服务器上，但我尝试在我的实时服务器上安装它，以便其他人可以看到结果，它出错 - 我认为我的实时网站必须缺少一些Perl模块）：
#!perl
use POSIX;
use CGI ':standard';
use GD::Graph::area;
use GD::Graph::colour qw(:colours);
use strict;
# Graph constants
GD::Graph::colour::add_colour( axes => [ 0x00, 0x00, 0x00 ] );
GD::Graph::colour::add_colour( earth => [ 0x00, 0x00, 0x00 ] );
GD::Graph::colour::add_colour( beam => [ 0x00, 0x00, 0x00 ] );
GD::Graph::colour::add_colour( clutter => [ 0x66, 0x33, 0x00 ] );
GD::Graph::colour::add_colour( terrain => [ 0x00, 0x99, 0x00 ] );
GD::Graph::colour::add_colour( earth => [ 0x00, 0x00, 0x00 ] );
GD::Graph::colour::add_colour( fre1 => [ 0xFF, 0x33, 0x00 ] );
GD::Graph::colour::add_colour( fre2 => [ 0xFF, 0x66, 0x00 ] );
GD::Graph::colour::add_colour( sky1 => [ 0x33, 0x66, 0x99 ] );
GD::Graph::colour::add_colour( sky2 => [ 0x66, 0x99, 0xCC ] );
# All arrays should same number of entries.
my @data = (
[ 0, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, 5, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, 10, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, 15, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, 20, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, 25, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, undef, 30, undef, undef, undef, undef, undef, undef, undef, undef, undef ],
[ 450, 458, 459, 458, 457, 455, 453, 451, 449, 447, 444, 441, 438, 435, 432, 429, 426, 422, 420, 416, 413, 409, 406, 402, 399, 395, 391, 388, 384, 381, 376, 373, 369, 365, 361, 358, 353, 350, 345, 341, 337, 333, 329, 325, 321, 316, 313, 308, 304, 299, 296, 291, 286, 282, 277, 273, 268, 265, 259, 256, 250, 247, 241, 236, 232, 227, 223, 217, 213, 208, 204, 198, 194, 188, 184, 178, 173, 168, 163, 158, 152, 148, 142, 137, 131, 126, 120, 115, 109, 102, 97, 90, 85, 78, 72, 64, 58, 50, 43, 32 ],
[ 450, 453, 451, 449, 447, 444, 441, 438, 435, 432, 428, 426, 422, 418, 415, 411, 408, 404, 400, 396, 393, 389, 386, 381, 378, 374, 369, 366, 361, 358, 353, 350, 345, 342, 337, 334, 329, 326, 321, 316, 313, 308, 305, 300, 296, 291, 288, 283, 279, 274, 271, 266, 261, 257, 252, 249, 244, 240, 235, 231, 226, 222, 217, 212, 208, 203, 199, 194, 190, 185, 181, 176, 172, 166, 162, 157, 151, 147, 142, 138, 132, 128, 123, 118, 113, 108, 103, 98, 92, 87, 82, 76, 71, 65, 60, 54, 49, 42, 36, 27 ],
[ 450, 445, 440, 436, 432, 428, 423, 419, 414, 411, 406, 402, 397, 392, 389, 384, 380, 375, 372, 367, 363, 358, 354, 350, 346, 341, 336, 332, 328, 324, 319, 315, 310, 307, 302, 298, 293, 290, 285, 280, 276, 271, 268, 263, 259, 254, 250, 246, 242, 237, 233, 228, 224, 220, 215, 211, 206, 203, 198, 194, 189, 186, 181, 176, 172, 167, 164, 159, 155, 150, 147, 142, 138, 133, 129, 125, 120, 116, 111, 107, 102, 99, 94, 90, 85, 82, 77, 73, 68, 63, 60, 55, 51, 46, 43, 38, 34, 29, 25, 21 ],
[ 450, 437, 429, 423, 416, 411, 405, 400, 394, 389, 383, 379, 373, 367, 363, 357, 353, 347, 343, 337, 333, 328, 323, 318, 314, 309, 303, 299, 294, 290, 285, 281, 275, 272, 266, 262, 257, 253, 248, 243, 239, 234, 231, 226, 222, 217, 213, 208, 205, 200, 196, 191, 186, 183, 178, 174, 169, 166, 161, 157, 153, 149, 144, 140, 136, 132, 128, 124, 120, 116, 112, 108, 104, 100, 97, 92, 88, 84, 80, 77, 73, 69, 65, 62, 58, 55, 51, 48, 44, 40, 37, 34, 31, 27, 25, 22, 19, 17, 15, 14 ],
[ 450, 432, 422, 415, 406, 400, 393, 387, 380, 375, 368, 363, 357, 350, 345, 339, 334, 328, 324, 318, 313, 307, 303, 297, 293, 287, 281, 277, 271, 267, 262, 258, 252, 248, 243, 239, 233, 229, 224, 219, 215, 210, 206, 201, 197, 192, 188, 183, 180, 175, 171, 166, 161, 158, 153, 149, 145, 141, 136, 133, 128, 125, 120, 116, 112, 108, 105, 100, 97, 93, 89, 85, 82, 78, 75, 71, 67, 64, 60, 57, 53, 50, 46, 43, 40, 37, 34, 31, 28, 25, 22, 19, 17, 15, 13, 11, 10, 8, 8, 9 ],
[ 387, 344, 266, 240, 222, 215, 190, 156, 120, 76, 99, 151, 167, 158, 167, 158, 157, 148, 114, 89, 87, 28, 11, 11, 12, 12, 12, 13, 13, 13, 13, 23, 15, 34, 39, 38, 72, 107, 122, 134, 128, 128, 121, 100, 82, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 20, 20, 15, 15, 15, 15, 14, 14, 14, 14, 60, 53, 13, 13, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 3, 2, 2, 1, 26 ],
[ 386, 343, 261, 235, 217, 210, 185, 151, 105, 61, 84, 136, 152, 143, 152, 153, 152, 143, 109, 84, 82, 23, 11, 11, 12, 12, 12, 13, 13, 13, 13, 23, 15, 34, 34, 33, 67, 102, 117, 129, 123, 128, 121, 100, 82, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 60, 53, 13, 13, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 3, 2, 2, 1, 26 ],
[ 0, 1, 1, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 9, 10, 10, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 13, 13, 13, 13, 12, 12, 12, 11, 11, 11, 10, 10, 10, 9, 9, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 3, 2, 2, 1, 1 ]
);
my $dist = 32.745;
my $mygraph = GD::Graph::area->new( 800, 300 );
$mygraph->set(
transparent => 0,
l_margin => 3,
b_margin => 3,
t_margin => 5,
r_margin => 5,
text_space => 3,
axis_space => 7,
tick_length => -5,
accent_treshold => 100,
x_label_position => 0.5,
bgclr => 'white',
fgclr => 'black',
boxclr => 'sky1',
labelclr => 'black',
axislabelclr => 'black',
textclr => 'black',
x_label => 'Kilometres',
y_label => 'Metres',
x_label_skip => 15.27,
x_last_label_skip => 1,
x_min_value => 0,
x_max_value => $dist,
borderclrs => [qw(fre2 fre1 black fre2 sky1 clutter terrain axes)],
dclrs => [qw(fre2 fre1 fre1 fre2 sky1 clutter terrain axes)]
) or warn $mygraph->error;
my $myimage = $mygraph->plot( \@data ) or die $mygraph->error;
print "Content-type: image/png\n\n";
print $myimage->png;
背景资料
我目前有一个非常成功的网页，使英国公民能够将地面电视天线对准给定的发射机。 Here's an example of it in action
加载完成后，相关按钮启用后，有三个可用的可视组件可帮助对齐天线并预测信号的可能用途：
这是最后一个，通过按下表格底部的信号配置文件按钮获得，并显示在两张地图下方的页面底部，这是值得关注的这里。我正在寻找替换它，因为它目前使用的是谷歌图表工具 API，不幸的是谷歌已经弃用它，并且应该在2015年结束，但幸运的是到目前为止他们一直在运行。< / p>
我一直在寻找，因为在Google推出交换机的那一天取而代之，但取得了非常有限的成功。如果有人知道我可以在我自己的服务器上安装一个软件包来取代谷歌的图表绘图功能，我将非常感谢你知道它。
答案 0 :(得分：1)
这感觉就像代码中的一个错误，但我现在没有时间进一步调查。我只是要注意，解决方法似乎是要替换：
x_min_value => 0,
与
x_min_value => 1,