The peak evaluation formula editor allows you to enter an individual
formula for calculating a peak evaluation result. All intensity values,
peak heights or peak areas might be addressed in a custom formula for
calculation. Furthermore it is possible to use additional information
stored in custom labels attached to data objects in use.
The formula editor looks like this:
Enter any formula using simple arithmetic operations into the text field.
If you are not sure about the syntax, please use the short
hand buttons underneath the text field or the context menu available
Mouse button click for
To open the context menu, holding all functions listed below, please
follow the instructions below:
Move the mouse
pointer to the position in the text field, where you like to insert
a parameter, operator, mathematical function or label.
Click the Right Mouse button to open the context menu.
The following values, variables, mathematical functions and operators
are allowed to create a formula:
Positive or negative numeric values
You may use any available label containing numerical values for calculation
purposes. Clicking the Label
button opens a drop-down list with
all available labels to choose from.
Intensity values at a defined position on the x-axis of the current
spectrum. This value is independent of the evaluated peaks. Clicking the
Intensitybutton opens an input mask for
the x-axis position of the intensity.
Tags hold typical peak information which can be used for calculation.
A list of all tags is available by clicking the Tags
button or via the context menu:
Default mathematical functions from a pocket calculator like sin(x),
cos(x), tan(x), sqrt(x), sqr(x), etc. are available in the context menu
of the editor.
A list of operators is given as buttons below the formula text field.
They are also available in a context menu.
Any basic mathematical operators are allowed to add,
subtract, multiply or divide values. For assistance, please click one
of the operator buttons.
Mathematical terms can be put in parentheses to control
the order of calculation.