loglogex1.php
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<?php // content="text/plain; charset=utf-8"
require_once ('jpgraph/jpgraph.php');
require_once ('jpgraph/jpgraph_log.php');
require_once ('jpgraph/jpgraph_line.php');
require_once ('jpgraph/jpgraph_scatter.php');
$ab2 = array( 1.5, 2.0, 2.5, 3.0, 4.0, 5.0, 6.0, 8.0, 10.0,
12.0, 15.0, 20.0, 25.0, 30.0, 40.0, 50.0, 60.0 ,75.0,
100., 125., 150.);
$mn2 = array( 0.5, 0.5, 0.5, 0.5, 0.8, 0.8, 0.8, 0.8, 1.0,
1.0, 1.0, 1.0, 1.0, 2.0, 2.0, 2.0, 2.0, 2.0,
5.0, 5.0, 5.0);
$rhos = array(30.0, 31.0, 32.0, 34.0, 35.5, 37.5, 38.0, 39.5, 41.5,
43.0, 41.0, 42.0, 42.5, 45.0, 49.0, 53.5, 58.0, 66.5,
75.0, 81.0, 89.0);
// Create the graph.
$graph = new Graph(500,300);
$graph->SetScale("loglog");
$graph->SetY2Scale("lin");
$graph->y2axis->SetColor("blue","blue");
$graph->img->SetMargin(50,70,40,50);
$graph->title->Set("Geoelektrik");
$graph->xaxis->title->Set("Auslage ab/2 [m]");
$graph->yaxis->title->Set("rho_s [Ohm m]");
$graph->y2axis->title->Set("mn/2 [m]");
$graph->y2axis->title->SetColor("blue");
$graph->y2axis->SetTitleMargin(35);
$graph->title->SetFont(FF_FONT1,FS_BOLD);
$graph->xaxis->title->SetFont(FF_FONT1,FS_BOLD);
$graph->yaxis->title->SetFont(FF_FONT1,FS_BOLD);
$graph->xgrid->Show(true,true);
$graph->ygrid->Show(true,true);
// Create the linear plot
$lineplot=new LinePlot($rhos,$ab2);
$lineplot->SetWeight(1);
$lineplot->mark->SetType(MARK_FILLEDCIRCLE);
$lineplot->mark->SetWidth(2);
// Create scatter plot
$scplot=new ScatterPlot($mn2,$ab2);
$scplot->mark->SetType(MARK_FILLEDCIRCLE);
$scplot->mark->SetColor("blue");
$scplot->mark->SetWidth(2);
// Add plots to the graph
$graph->AddY2($scplot);
$graph->Add($lineplot);
// Display the graph
$graph->Stroke();
?>