29.6.8 2Ys Y-Y Graph

Data Requirements

Select at least two Y columns (or a range of at least two Y columns). If there is an associated X column, X column supplies X values; otherwise, sampling interval of the Y column or row number is used.

Multiple Y columns will be sepereated into 2 groups by 2 X columns; otherwise, these Y columns will be assigned to different Y axis by sequence.

Creating the Graph

Select the required data.

Select Plot > Multi-Panel/Axis: 2Ys Y-Y.

or

Click the 2Ys Y-Y button on the 2D Graphs toolbar.

Template

DOUBLEY.OTP (installed to the Origin program folder).

Notes

The double Y axis graph contains two layers:

• Layer 2 is linked to Layer 1.
• The X axis in layer 2 has a straight one-to-one link with the X axis in layer 1.

If two columns of values are selected (or a range of two columns), then one data plot displays in each layer. Each data point in the data plot is connected by a line. The default line connection between points is a straight line. The data points are displayed as symbols.

Creating an XYXY graph using the Double-Y template

You can quickly create an XYXY graph from the same Double-Y graph template:

1. Select your XYXY columns and choose Plot > Multi-Panel/Axis: 2Ys Y-Y.
2. In the graph window, right-click on the Layer 2 icon and choose Layer Properties...
3. In the Plot Details dialog box, click the Link Axes Scales tab (Layer 2) and set X Axis Link to None and click OK.
4. Double-click the top axis and on the Tick Labels tab of the Axis dialog, check the Show box.
5. On the Scale tab, set From and To values and click OK; or close the Axis dialog box and click the Rescale button on the Graph toolbar.

Note: To plot Double-Y graph into one single layer, you can use this newly-implemented template "Double Y".