René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Add a \"ruler\" tool to the plot UI","articleBody":"**Enhancement proposal:**\nAdd a \"ruler\" like tool to the plot window.\n\nMany other scientific data viewing programs (for example ImageJ) have this, and it is the feature I miss most often in the matplotlib plot window.\n\n**More detailed description:**\n- When left-click-dragging the mouse, a line is temporarily drawn from the start to the end point.\n- Movement can be restricted to horizontal/vertical lines with the Ctrl/Shift key.\n- As the mouse is dragged, the status bar shows:\n  - Total distance\n  - Angle\n  - Horizontal distance\n  - Vertical distance\n\n**Use cases:**\n- Measure the distance between peaks in a spectrum, correlation between time series, etc.\n- Manual period detection in time series.\n","author":{"url":"https://github.com/quazgar","@type":"Person","name":"quazgar"},"datePublished":"2016-10-04T13:47:08.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":15},"url":"https://github.com/7216/matplotlib/issues/7216"}