【发布时间】:2017-04-03 10:34:20
【问题描述】:
我在 PHP 中有一个用 jpg 图实现的多图:第一个图和第二个图具有相同的比例 e 左侧的轴,第三个图具有不同的比例或值范围,轴位于正确的。 附上代码:
$width=700;
$height=500;
// Create the graph and set a scale.
// These two calls are always required
$graph = new Graph($width, $height);
$graph->SetScale("intlin"); // X and Y axis
$graph->SetY2Scale("lin"); // Y2 axis
$theme_class=new UniversalTheme;
$graph->SetTheme($theme_class);
$graph->img->SetAntiAliasing(false);
$graph->title->Set('Filled Y-grid');
$graph->SetBox(false);
$graph->xaxis->title->Set("Days");
$graph->img->SetAntiAliasing();
// Create the first line
$p1 = new LinePlot($ydata1);
$graph->Add($p1);
$p1->SetColor("#0033FF");
$p1->SetLegend('Rain');
// Create the second line
$p2 = new LinePlot($ydata2);
$graph->Add($p2);
$p2->SetColor("#33FFFF");
$p2->SetLegend('Irrigation');
// Create the third line
$p3 = new LinePlot($ydata3);
$graph->AddY2($p3);
$p3->SetColor("#000000");
$p3->SetLegend('Relative Soil Moisture');
$graph->legend->SetFrameWeight(0);
// Setup a title for the graph
$graph->title->Set($titolo);
$nome_img=substr($titolo, 0, -10);
// Display the graph
$graph->Stroke("tmp/graph_$nome_img.png");
echo "<img src=\"tmp/graph_$nome_img.png\"> ";
我只有左边的轴,右边的轴没有出现。您会看到所附图像。 有什么错误吗? 谢谢。
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