# Modifying the X Axis

To change the range, numbering interval, or any other property associated with the x or y axis, first choose the axis (or one of its components), double click on the axis or use the “Edit/Properties” option. The X-axis has the following properties:

Title – Label for x-axis displayed below numbering.

Rescalable -- Specifies as to whether the x-axis will be re-numbered (scaled) when one of the data points extends beyond its limit. In this case, the “compress data” option determines whether a scrolling window is used, and old data is discarded, or the range of the graph is to be expanded showing all data. Note that re-scaling may modify the tic mark, numbering, and grid line intervals to maintain a similar visual representation of the chart. If this options is not checked, data points falling beyond the limits of the X axis will be discarded.

Show grid lines -- If the this option is on, grid lines will be shown crossing the X axis.

Tics centered, Tics inside, Tics outside – Define the tic mark alignment with respect to the X axis line. Tics marks can be attached to the X axis from their center, left or right sides.

Compress data -- When this option is set, re-scaling the X axis will increase the coordinate area of the chart enough to encompass the offending data point. As a result, existing data will shrink size. Clearing this option will have data scrolled along the X axis during rescaling. In this case, data scrolled out of view will be discarded.

Minimum, Maximum – Define the initial X-axis data range of the chart.

Tic Interval (major & minor) – Define the distance along the X-axis between consecutive tic marks. If an interval is zero, tic marks will not be displayed.

Numbering interval – Defines the distance along the X-axis between consecutive number labels on the axis.

Grid line interval – Defines the distance along the X-axis between consecutive grid lines.

Y Intersection Point – Defines the point (in x-axis coordinates) along the X-axis where the Y-axis intercepts.

Y2 Intersection Point – Defines the point (in x-axis coordinates) along the X-axis where the second Y-axis intercepts.

Data scaling factor – Defines the factor multiplied to the X component of all data plotted to the chart at runtime.