Choose when the X label will be displayed?

[Guilherme]

I'm plotting a graph with line and points. Above the point the value is printed,

I want to not display the value of the data, when it's 0(zero). Did someone already have tried something like this?
When I use the type line and the X axis doesn't have much space between each item the values inside the graph overlap themselves.

You can take a look at http://imageshack.us/f/826/graficoe.png/

Best Regards,
Guilherme

[lbayuk]

You can do this with a custom label formatting function. Define your function to return an empty string if you do not want that value labeled:

function my_format($label)
{
  if ($label == 0) return '';
  return $label;
}

Now tell PHPlot to use your function to format the Y data labels:

$plot->SetYLabelType('custom', 'my_format');

More about this here with a longer example here

[Guilherme]

Perfect man!
Thank you!

[lbayuk]

Sorry, a correction: What I posted above, using SetYLabelType() will affect both Y tick labels (those on the axis), and Y data labels (those within the plot). The unwanted side effect would be no 0 label on the Y axis. I should have said to use this:

$plot->SetYDataLabelType('custom', 'my_format');

Which only applies to the Y data labels (inside the plot area).