A.4.5.39 StatMark Form

The StatMark form (), available from the XYArray Layer Control, plots a set of markers based on a combination (typically the mean) of input array-valued coordinates. The input X and Y coordinates must be fixed-length arrays of length N; N markers are plotted, each one representing the mean (or median, minimum, maximum, ...) of all the input array elements at the corresponding position.

Note that because the X and Y arrays must be of a fixed size for all rows, and because combination is performed in both X and Y directions, this is typically only suitable for plotting combined spectra if they all share a common horizontal axis, e.g. are all sampled into the same wavelength bins. To visually combine spectra with non-uniform sampling, the ArrayQuantile form may be more useful.

Example StatMark plot

StatLine form configuration panel

The configuration options are:

X Combine

Y Combine

Defines how corresponding array elements on the X/Y axis are combined together to produce the plotted value. The following options are currently available:

• mean: the mean of the combined values
• median: the median of the combined values (may be slow)
• min: the minimum of all the combined values
• max: the maximum of all the combined values
• q.01: the 1st percentile of the combined values (may be slow)
• q1: the first quartile of the combined values (may be slow)
• q3: the third quartile of the combined values (may be slow)
• q.99: the 99th percentile of the combined values (may be slow)
• stdev: the sample standard deviation of the combined values
• sum: the sum of all the combined values
• count: the number of non-blank values

Color

Color of the plotted markers.

Shape

Shape of the plotted markers.

Size

Size of the plotted markers in pixels.