What are some best practices for effectively displaying multiple data sets on a graph using JPGraph in PHP?

When displaying multiple data sets on a graph using JPGraph in PHP, it is important to differentiate between the datasets by using different colors, line styles, or markers. This helps viewers easily distinguish between the data points. Additionally, providing a legend that explains the meaning of each dataset can further aid in understanding the graph.

// Create a new graph
$graph = new Graph(800, 600);

// Add the datasets to the graph
$lineplot1 = new LinePlot($dataSet1);
$lineplot1->SetColor('blue');
$lineplot1->SetLegend('Data Set 1');

$lineplot2 = new LinePlot($dataSet2);
$lineplot2->SetColor('red');
$lineplot2->SetLegend('Data Set 2');

// Add the plots to the graph
$graph->Add($lineplot1);
$graph->Add($lineplot2);

// Display the legend
$graph->legend->SetPos(0.5, 0.95, 'center', 'bottom');
$graph->legend->SetColumns(2);
$graph->legend->SetColor('black', 'black');

// Output the graph
$graph->Stroke();