Scalebar for images and plots

Create a customizable scalebar for x- and/or y-axis of a 2D plot.

Scalebar

Create a scalebar object for x- and or y-axis. Scalebar appearance is configured on creation, through setting of properties, or interactively using a context menu.

Note: For precise positioning, plotboxpos is required.

Features

• Option to autoadjust scalebar on zoom.
• Scalebar stays in place on zooming and panning
• Update scalebar size and appearance interactively from contextmenu
• Save scalebar appearance to preferences, so next scalebar created will use same appearance.
• Hide/show semi-transparent background

Example

f = figure();
hAx = axes(f);

imshow('cell.tif', 'Parent', hAx);

pixPerUm = 5;
scalebarLength = 10;  % scalebar will be 10 micrometer long
unit = sprintf('%sm', '\mu'); % micrometer

hScalebar = scalebar(hAx, 'x', scalebarLength, unit, 'Location', 'southeast', ...
    'ConversionFactor', pixPerUm);

Known Bugs

Scalebar position is not correctly updated when interactive zooming tools are activated and user doubleclicks in axes