You can control some aspects of how data points, field names and labels on your chart are displayed, including:
Whether data points are displayed.
Showing a measure name on charts including only a single measure.
Restricting the number of labels displayed.
Rotating the direction of label text.
You can also control the colors, appearance, background, and many other features of charts through the Advanced Formatting dialog. For more information and a list of editable properties, see Advanced Chart Formatting.