The Combine
Data tab is used to combine data sets. To combine
several data sets, select the appropriate run numbers to be added in the
+RunNums box, choose the appropriate +xColumn and +yColumn and
the click on the Add
to + list button. This will add this scan with the
appropriate X and Y columns to the + Array. The same procedure can
be followed in the "-" section
to add scans to be subtracted. Once the appropriate scans are selected
to be added and subtracted, a desciptor for the combined data set is
typed into the Description
box. The normalization for the combined data is specified by
selecting the appropriate input channel from the pull down menu (showing Time in the
image below) and the numerical normalization constant is typed in the
box above this menu (showing 1 in the image below). NOTE that if the normalization
constant is not reasonable (for instance if you counted to 1000000
monitor counts and use a monitor normalization of 1) the resulting
numerical data may not appear correctly on the plot. The Bin Tolerance
for the addition and subtraction can be changed and the top-most pull
down menu can be used to select a buffer to use - select Next from the
list to add the combined data as the next available buffer.
Finally click on the Combine and Save to
buffer button to complete the generation of the combined data set.
To plot a combined data set, go to the Graph Data tab and click on the
top blue button to ensure that Graphing Data Buffers is
selected (as opposed to Graphing Data Sets
(any column) ). You can then select the data buffer to be
plotted from the pull down menu (labelled Combined Ni powder
data in the image below). The data can be plotted as a New
Plot or overplot on top of existing plots by choosing either New Plot or Overplot from
the pull down menu. Clicking on the Graph
Data button will graph the combined data set. This
data can be fit and hard copies can be generated as described in the Graph Data
help document.
