Boxplot: boxplotx without toolboxes

boxplotx(data) gives boxplots without need for statistics package.
Data can be a vector, matrix, or cell array of vectors.
NaNs can be in data and vectors can be of differing lengths.
Options allow position, width and colour of boxplots to be set.

Set hold on, then additional boxplots can be added.

Box limits and whisker end values can be changed.