27.2.5 XY Error Bar Graph

Image067.gif

Data Requirements

Select three Y columns or a range of data from three Y columns (columns may be multiples of three). The left-most Y column supplies the Y values, the middle column supplies the X error bar values and the rightmost column supplies the Y error bar values.

If there is an associated X column, X column supplies X values; otherwise, sampling interval of the Y column or row number is used.

Creating the Graph

Select required data.

From the menu, select Plot > Basic 2D: XY Error.

or

Click the XY Error button on the 2D Graphs toolbar.

X Y Error 02.png

Template

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

Notes

There are multiple ways to add error bars to your graph (scatter, line + symbol, bar, etc.). This plot type assumes your data are in designated "Y" columns and it will work with any number of Y column triplets. If your error bar data are in columns designated as "yEr±", you do not need to choose this plot type but can instead choose from Line + Symbol, Column/Bar, etc. See Adding Error Bars to Your Graph.

Furthermore, if your data has multiple Y columns and every Y has its error column, but they share the same X column and X error, which are orgnized as follow

X - xErr - Y1 - yErr1 - Y2 - yErr2 - ... - Y# - yErr#

you can highlight all and choose Line + Symbol or other plot type to create an XYError bar graph. The xErr column that appears before any Y column will be used for each Y column that does not have its natural xErr column in the selection.