SQPlot Dialog

Annotations

Annotations are graphics and text placed directly on a plot. These are especially useful for quality control graphs where customers often specify pass/fail criteria in geometric terms - for example, the spectrum must be within certain lines.  Tutorial II.

As illustrated here, there are a variety of annotations. In addition, up to 12 line legends (not shown here) are possible. Legends and annotations are stored on disk with the Scan Parameters file.

Annotations are not available in Scantraq LT.

SQPlot Annotator

SQPlot Annotator

Annotations (lines, symbols, text, axis labels, etc.) are easily added by clicking on the graph to bring up the SQPlot Annotator. This dialog demonstrates adding a horizontal line T = 50%. Made a mistake or prefer a different color? Click on the annotation to edit or remove it. Tutorial III.

Calculated Annotations

Computed Annotations

Annotations can include results calculated from measured spectra. This is extremely powerful and useful and not, to our knowledge, available in programs supplied by instrument manufacturers.

The development of computed annotations was inspired by watching technicians manually mark up measured spectra. The technique relies on setting PlotAnnotation$ in Scantraq BASIC (click to view code).

SQPlot Formulator

SQPlot Formulator

The SQPlot Formulator supports arithmetic operations on data columns. This is typically utilized to show detail in different regions. It can also be used to compute and plot averages or differences. Once a plot formula is developed it is retained and automatically applied to new graphs. Tutorial IV. The formula used here is