What alternative methods or functions in PHP can be used to ensure both Y-axes have the same scale for better data interpretation in graphs?

When creating graphs with dual Y-axes in PHP, it is important to ensure that both Y-axes have the same scale for better data interpretation. One way to achieve this is by calculating the maximum value of both datasets and then setting the maximum value of both Y-axes to the larger of the two values. This will ensure that both axes have the same scale and make it easier to compare the data.

// Calculate the maximum value of both datasets
$max_value_dataset1 = max($dataset1);
$max_value_dataset2 = max($dataset2);

// Set the maximum value of both Y-axes to the larger of the two values
$max_value = max($max_value_dataset1, $max_value_dataset2);

// Set the maximum value of both Y-axes
$graph->SetScale('intint', 0, $max_value, 0, $max_value);