Matplotlib data cursor The message in the Toolbar reflects the position of the cursor and displays for example: Jan 23, 2022 · Hello, Inspired by matlab and plotly, I made pure matplotlib implementation of crosshair cursor with hovering date labels. Cursor but the cursor is only viewed widgets. This is a bit slow, and you may notice some lag of the cross-hair movement. The idea is to get a data line which when moved with a mouse and shows the data point of the plotted graph. text. This code initializes a scatter plot and an annotation object. Using multiple annotations and disabling draggability via signals # By default, each Cursor will ever display one annotation at a time. However, when doing so, they must ensure that format_cursor_data can convert the data to a string representation. A number of helpful keybindings are registered by default. The data returned is formatted and printed on the console. This article explains how to insert a cursor to your plot, how to customize it and how to store the values that you selected on the plot window. Cross-hair cursor # This example adds a cross-hair as a data cursor. lines import Line2D from matplotlib. The only current use case is displaying the z-value of an AxesImage in the Matplotlib’s FigureCanvas provides event hooks. Then I want to add the cursor when hovering on the graph. cursor () function to add interactivity to the plot, in here we have created a figure and axes object, plot the data, and after that created a cursor object. - Proper Multicursor # Showing a cursor on multiple plots simultaneously. subplots() lines = ax. As a guess to an answer, you'll probably need two cursors. However, currently, it is only supported for the Matplotlib version 3. Enable or disable data cursor mode, and set other basic options, by using the datacursormode function. I follow the demo from https://matplotlib. I also want to interact with this visual representation of the data via Mouse move and click events # An example of how to interact with the plotting canvas by connecting to move and click events. A cursor that uses blitting for speedup of the rendering Apr 13, 2017 · The %matplotlib inline backend displays the plot outputs as png images. widget. As an example, this displays the x, y coordinates of the selected artist in an annotation box: import matplotlib. This has two advantages: the code you write will be more portable, and Matplotlib events are aware of things like data coordinate space and which axes the event occurs in so you don't Sep 17, 2015 · Matplotlib converts things to arrays when you plot the data. text import Text from matplotlib. 0/gallery/misc/cursor_demo_s Cursor data can be used by Artists to provide additional context information for a given event. Other arguments (which are all keyword-only) allow for basic customization of the Cursor The Matplotlib Cursor Widget is specifically the Cursor class in Matplotlib's widgets module. Jun 21, 2020 · I want to plot the close price of INS as below and it works. bindings # See the bindings keyword argument to the constructor. Cursor data can be used by Artists to provide additional context information for a given event. The default implementation converts ints and floats and arrays of ints and floats into a comma-separated string enclosed in square brackets, unless the artist has an associated colorbar, in which case scalar values are formatted using the colorbar's formatter. Other arguments (which are all keyword-only) allow for basic customization of the Cursor Cross-hair cursor # This example adds a cross-hair as a data cursor. matplotlib. Is there such thing in matplotlib? Or I need to write my own event using matplotlib. g. Jan 22, 2012 · I’ve recently been playing around with a widget intended to be similar to matlab’s “data cursor”. The only current use case is displaying the z-value of an AxesImage in the status bar of a plot window, while moving the mouse. The good news? There’s a simple workaround that lets you enjoy the best of both worlds. The code I use to create my line graph is as follows: df_all['c Jun 17, 2020 · matplotlib. The default implementation just returns None. format_cursor_data () in Python is a powerful method that plays a crucial role in customizing the display of cursor data in Matplotlib plots. One of its key features is the built-in navigation toolbar, which provides essential tools like pan, zoom, save, and home. After that we want to use the mplcursors. A cursor that uses blitting for speedup of the rendering Tick. See full list on blog. The only current use case is displaying the z-value of an AxesImage in the Apr 20, 2023 · Hello all, I am trying to plot and analyze the data using matplotlib library as well as plotly. widgets. Also, a matplotlib "line" could have more than 2 vertices; it is not clear if that is needed in your case. get_cursor_data(event) ¶ Get the cursor data for a given event. Jul 23, 2025 · A cross-hair cursor is a precision tool designed to enhance accuracy by marking a specific point on the screen with two intersecting perpendicular lines. uklsay vady bsgi ujmxchurn fwidi jtyy nvc avpdipq bdikj tnychs tzvjj cpuv tippf vlikgan wuckd