Matplotlib mouse hover. In the second code, a pie chart is created an when the user clicks on a wedge of the chart, the label will be printed in the console. random((2, 26))) ax. I am new to matplotlib and I am looking to label stems in a stem plot with x,y co-od when mouse hovers over that point. We show three implementations: A simple cursor implementation that redraws the figure on every mouse move. This is done via contains_point. rand(20), np. Display a data cursor including a text box, which shows the plot point close to the mouse pointer. 2. annotate() function and all the input parameters used in the present example. time vs Temperature, selecting to points must return initial and final time). Matplotlib works with a number of user interface toolkits (wxpython, tkinter, qt, gtk, and macosx) and in order to support features like interactive panning and zooming of figures, it is helpful to the developers to have an API for interacting with the figure via key presses and mouse movements that is "GUI neutral" so we don't have to repeat a lot of code across May 28, 2018 · As a minor improvement, seeing as bar charts are typically for categorical data it would make sense that the hover gives the actual name rather than just the index as this example shows. Additionally, you may specify a text point xytext=(x, y) for the location of the text for this annotation. figure = pl. 3 show label on hover over vertically spanned area. Feb 22, 2022 · Matplotlib - tooltips on mouse hover. A line - the line can have both a solid linestyle connecting all the vertices, and a marker at each vertex. FigureCanvasBase. For the cursor to remain responsive you must keep a reference to it. Oct 18, 2019 · I didn’t see anything about this in the API documentation, but perhaps I missed it. Nov 17, 2019 · 1. I have tried using mplcursors module for showing x and y values while hovering. anntzer. 21. pyplot as plt import matplotlib. This is a bit slow, and you may notice some lag of the cross-hair movement. 5 on Ubuntu 16. use('TkAgg')), the following snippet shows the x/y cursor mouse hover correctly also for a datetime x axis: Feb 11, 2021 · You can reassign the callback function that displays the coordinates ( ax. Ideally they would hover over anywhere on the x-axis and it would display all three values for the y-axis. mpl_connect('motion_notify_event', self. Python show image upon hovering over a point. As anticipated in the introduction, we want to improve the graphical outcome and the efficiency of our cursor by popping in a small framework, containing the coordinates of the selected point, at each mouse click. Create a Line2D instance with x and y data in sequences of xdata, ydata. Return whether this artist is queried for custom context information when the mouse cursor moves over it. Download Python source code: mouse_cursor. Hope it’s okay to repost here. It is supposed to work over all points and I see no obvious way why it should only work for some points. format_coord = lambda x,y: "". May 23, 2019 · 10. Here is an example with the hovertool feature, which is what you're looking for. It’s also a popular way to add charts to your Streamlit apps. show() How can I get it to show the day? Nov 11, 2022 · I'm still a beginner and I'm trying to make the edge of the bar of the chart be highlighted (change color) in a mouse movement event when hovering over it. The code shows an error: AttributeError: 'NoneType' object has no attribute 'patch'. Here an illustration of what I am trying to achieve. I currently have this really simply graph. Only the bar over which the mouse hovers should be highlighted. pyplot as plt x_axis = df. This allows you to take some action when you click on a piece of the plot, or press a key, or whatever. However, I want to the data label when mouse hover to show the actual date. index. Specifically, a Selection has the following fields: artist: the selected artist, target: the (x, y) coordinates of the point picked within the artist. But when my button_press_event fires, event. answered Sep 9, 2016 at 13:08. I want to limit the region where the _on_move() is called to ax1 and I struggle to get what I want. Axes. def __init__(self): self. However it may be much easier to just use the %matplotlib notebook backend, which keeps the matplotlib figure alive when Feb 13, 2019 · The goal is easy: I want to extract from a 2D image, the pixel coordinates clicking with the mouse on it but then, I want to use these coordinates for different calculations. random. widgets. data = [('name1','value1','factor1')[('nameN','valueN','factorN')] I am trying to plot values as y (x is just the index of that y in data). cursor(hover=0) I can confirm all of the following for you: new Transient hover functionality works as intended (thanks!) True & False values work exactly as before. integrate import trapz def find_nearest (array,value): idx = (np. When the mouse is pressed, check to see if the click occurs over your rectangle (see Rectangle. This repository, matplotlib/mplfinance, contains a new matplotlib finance API that makes it easier to create financial plots. py in the matplotlib docs. Mar 2, 2024 · import matplotlib. The cookie is used to store the user consent for the cookies in the category "Analytics". mpl_connect('button_press_event', onclick) (see Store mouse click event coordinates with matplotlib) But in Jupyter that just doesn't react. The figure displays in a QtAgg GUI window. Here's a test version with a reduced dataset using the solution to the question linked above. Download Python source code: cursor. arange(-120, -110, 1) lat = np. Jun 23, 2022 · Matplotlib is one of the most popular charting libraries in Python. seed(1) from bokeh. gridspec as gs from math import floor # coordination lon = np. This is how you call the above part: button = Button(root, text = 'click mem') button. How to Set Scatter Plot Hover Info With Pandas Dataframe Column in Python With Plotly. It is also possible to pass new data as values of the hover_data dict, either as list-like data, or inside a tuple, which first element is one of the We would like to show you a description here but the site won’t allow us. The use of the following functions, methods, classes and modules is shown in this example: matplotlib. As you have noticed the canvas is not handled by Qt but by matplotlib so the solution is to use the events provided by that library, if you review the docs you see that there are the following events: Event name Class and description. No zooming or moving the chart around. Each point on the scatter plot is associated with a named object. To see how the graph is supposed to respond, uncomment the '#plt. Apr 21, 2020 · But with this method I can't get both x and y values while hovering my mouse cursor on the plot. #%matplotlib notebook import pandas as pd import matplotlib. This approach provides total control over the Apr 2, 2020 · The thing is, I've tried every test version of interactivity from the matplotlib documentation on event handling, as well as those in this question. Cross-hair cursor. The user performs an action using the mouse, like a click, which triggers Instead of providing a host of keyword arguments in Cursor ’s constructor, mplcursors represents selections as Selection objects and lets you hook into their addition and removal. I want to annotate different lines on a plot when hovering with the mouse, the same way is done here with points Possible to make labels appear when hovering over a point in matplotlib? I tried to adapt this code as the following : Instead of providing a host of keyword arguments in Cursor ’s constructor, mplcursors represents selections as Selection objects and lets you hook into their addition and removal. index: an Jan 24, 2020 · matplotlib 3. It consists of many widgets that are designed to work for any of the GUI backends. Python, Matplotlib, Scatter plot, Change color on the clicked point. As is it's designed to show the x-y coordinates, but it could be changed to output your array values instead. index: an Jul 7, 2018 · the plot is designed to display labels when a mouse hovers over a point and this works, but for only some points. I would like to be able to see the name of an object when I hover my cursor over the point on the scatter plot associated with that object. show() Output: A plot with an interactive navigation toolbar that displays mouse position at the bottom right corner. 4. Forward and Back are used to navigate back and forth between previously Jan 20, 2022 · Matplotlib - tooltips on mouse hover. Mar 15, 2021 · Matplotlib is a Data Visualization library in python. September 16, 2023 by Siddiqi. ¶. show() Download Python source code: hover. mouseover #. 1. An example is given at cursor_demo. Dec 9, 2019 · What I would like to do, is basically get the reference to the legend entry, so that I could write the same text as the legend label (here "My plot") in a "tooltip" (that is, in this case, Matplotlib annotation) followed by some other text; and then, once the mouse leaves the region of the legend entry, the tooltip/annotation should disappear. abs (array-value)). I found different implementations using different libraries and the more interesting solution seems the following: Sep 27, 2010 · Is there a way to change the way a Pick event occurs? Instead of a mouse click, is it possible to use a mouse hover? I'm just curious because I'm developing a wx application and would like to have a Tooltip over various artists. pyplot as plt import mplcursors import numpy as np import Jun 21, 2020 · Matplotlib - tooltips on mouse hover. When I searched everything was meant for scatter plot (Possible to make labels May 5, 2020 · Here's a working example of getting tooltip on hover. Mar 1, 2016 · "UserWarning: Matplotlib is currently using agg, which is a non-GUI backend, so cannot show the figure. xdata, event. Hope this helps. This can be connected to a function which checks if the mouse is inside one of the pie chart's wedges. Does anyone has idea how to solve this problem and plot graphs in separate windows? Apr 14, 2021 · Now, I want the user to be able to hover over certain points in that subplot and have an annotation appear about what they hovered over. tolist() plt. pyplot as plt import numpy as np; np. How to annotate the values of X Feb 21, 2018 · The function CreateToolTip() helps to create this tip easily. (Keep in mind that matplotlib predates pandas by over a decade. A Matplotlib visualization with tooltips and mouse hover events - Thiagobc23/Matplotlib-tooltips-example Feb 22, 2021 · How can I modify this plot to show me the value of each bar upon hovering mouse? import matplotlib. This is not possible. 9. Dec 19, 2014 · This only seems to give me the pixel locations of the mouse from my computer's perspective. backend_bases. Here is a minimal working example: def Nov 12, 2021 · Last day of snow. ipynb. ax1. I also want to show the index number from given lists for that particular point on which I will hover. Optionally, you can specify the coordinate system of xy and xytext with one of the following strings for xycoords and textcoords (default is 'data'): Note: for physical . p When I plot something with contourf, I see at the bottom of the plot window the current x and y values under the mouse cursor. add_subplot(111) # create a long tooltip with newline to get around wx bug (in v2. mouseover. Make a label / annotation appear, when hovering over an area (rectangle) 2. These are akin to a web browser's home, forward and back controls. But you can manually define the position with spring_layout. """Example of how to use wx tooltips on a matplotlib figure window. , one can create "stepped" lines in various styles. I love the functionality of the button, but is there anything to detect a more arbitrary hover or click event? Some example use cases: Hover on a matplotlib to get a bunch of metadata about how it was generated Click on a sample to replace it with more stats about it. In the motion event callback, compute the deltax and deltay of the mouse movement, and add those deltas to the origin of the rectangle you stored. pyplot as plt plt. mplcursors is a Python library that allows you to add interactive data cursors to Matplotlib plots. I have suggested this in an edit. seed(42) fig, ax = plt. I'll include a picture of my current chart. Apr 12, 2016 · everything works fine but if I change %pylab inline to %pylab tk or %pylab qt an interactive graph in separate window is shown and when I hover the mouse over the window python kernel crashes. The core data structures in matplotlib are numpy arrays. It seems like the mpl_connect event is never firing, whether I use click or hover. ydata # print 'x = %d, y = %d'% ( # ix, iy) # assign Feb 25, 2019 · When displayed within the matplotlib window the hover function works fine, however once it is embedded it seems to lose that functionality. 7. I would like to modify the code in the case of a stacked bar chart and get a specific tooltip of the section when the mouse hovers the section of the bar chart. The data label comes from different column of the data frame. If this is the case, it displays an image annotation with a corresponding image next to the hovered scatter point. It re-centers the graph on the location of the pointer when you scroll. This is not as nice as a popup but it does the job. May 12, 2021 · Matplotlib - tooltips on mouse hover. Feb 27, 2019 · For a matplotlib that is displayed in an external window (using matplotlib. subplots() ax. Plotly: always show hovertext. Is there a way to see also the z value? Here an example contourf: im Sep 9, 2016 · 1. There's absolutely no way of telling that the original data was in a dataframe instead of say, a list or a numpy array. You can even export the image as html so you can put it on a website or blog. Mar 28, 2018 · Below is an example that shows a label whenever the mouse pointer is moved on top of one of the blue markers. " when plotting figure with pyplot on Pycharm. Bases: Widget. Sphinx. pyplot as plt. figure() self. 04 using matplotlib installed with pip in the last month. Additionally, the drawing of the solid line is influenced by the drawstyle, e. Sep 16, 2023 · mplcursors Tutorial: Interactive Annotations and Data Cursors. def zoom_factory(ax,base_scale = 2. The chart is the following: the X axis is the year, Y axis is the day in the year that has snow. The (x, y) coordinates in terms of your plot are given by xdata and ydata; x and y are in pixels. In addition, I have defined a function which will be called once the mouse moves. axes. This is based off tooltips using standard matplotlib plots here. This code returns a tooltip when the mouse hovers over a bar chart. Jul 30, 2019 · The accepted answer on the duplicate explicitely works on "hover", not "click", so it's exactly what's being asked for. Matplotlib, Jupyter: Have annotation appearing when hovering over plot. Nov 12, 2020 · Matplotlib - tooltips on mouse hover. import numpy as np. 16. Data label to be '1873-11-18'. axis = self. It may be possible to write some JavaScript for the Jupyter notebook to obtain the color and pixel on mouse over an image in the cell output. 2; まずはt-SNE処理. Just use st. I would suggest reading about bokeh. 231. canvas. Event handling and picking¶. py. Although it is possible to create the tooltip from CSS or javascript, here we create it in matplotlib and simply toggle its visibility on when hovering over the patch. Create a new figure window: Mar 17, 2017 · 42. scatter(*np. pyplot! But Matplotlib charts are static images. Find here a complete solution on how to display an image on hover events. I was reviewing the matplotlib. show() This example uses the function to show pixel values. Some examples of widgets in matplotlib are Button, CheckButtons, RadioButtons, Cursor, and TextBox. In particular, it would be nice to be able to quickly see the names of the points that are matplotlib. The top axes is the smallest and is used to draw the coordinates of the mouse using the aforementioned text method, while the bottom axes is used for your plot. arange(20, 30, 1) # shape of value_1: (lon,lat) # pseudocolor plot value_1 = np. gca(). Here are the example programs on the matplotlib site that have to do with event handling. models The use of the following functions, methods, classes and modules is shown in this example: matplotlib. set_cursor. Jul 15, 2018 · The MouseEvent class has attributes x, y, xdata, and ydata. plot(range(10)) plt. widget. I thought that calling self. I found one example of that implemented but it used wxPython and unfortunately I can't use In this example, we create and modify a figure via an IPython prompt. Nov 2, 2023 · There are two ways that interactive plots are typically created in matplotlib. def plot_unit_circle(): Nov 24, 2022 · Cookie Duration Description; cookielawinfo-checkbox-analytics: 11 months: This cookie is set by GDPR Cookie Consent plugin. Looking for some help on how to display the annotations in the tkinter window. Matplotlib, Jupyter: Have annotation appearing Jul 18, 2012 · This should work. 6. I've tried some solution that I found in how to highlight line collection in matplotlib, Chan Bases: Artist. If it doesn't work for your case, make sure to let people be able to reproduce it by providing a minimal reproducible example (i. Matplotlib works with a number of user interface toolkits (wxpython, tkinter, qt4, gtk, and macosx) and in order to support features like interactive panning and zooming of figures, it is helpful to the developers to have an API for interacting with the figure via key presses and mouse movements that is "GUI neutral" so we don't have to repeat a lot of code across Nov 23, 2018 · I'm sure there a more efficient way to get the right indices when hovering over the pcolormesh, but this does the trick: import numpy as np import matplotlib. Sep 1, 2017 · 2. By default, matplotlib’s navigation toolbar shows the coordinates of the cursor when it is over the plotting area. Transient = 2. Related questions. 3) # where newlines aren't recognized on subsequent Jul 26, 2016 · Sounds like you'll need to dive into matplotlib's event handling code. A possibility could be to modify the datacursor according to the instructions provided for the 2D version in Get data from plot with matplotlib. lee January 22, 2020, 11:17pm 6. Click on the stats to toggle it back to Jul 23, 2020 · I am using mplcursors module to show label value. What I would ideally like is to be able to get at the coordinates on the right hand side of the toolbar and use those; it seems a shame to try to write my own pixel->data transform when matplotlib is clearly already doing it for me somewhere. 3f, |%a. I am trying to get the mouse position's longitude and latitude using cartopy via the standard matplotlib event handling. Matplotlib by itself isn't going to give you this functionality. How to display the value on horizontal bars. It uses a 'motion_notify_event' to detect when the mouse is over a scatter point (hovering). Instead clicking on the image sometimes enlarges it. md 27. Sep 8, 2018 · Many suggested solutions on stackoverflow involve connecting an event to matplotlib, like. Dec 15, 2010 · 6. Oct 17, 2013 · I think this neat little matplotlib tool could be adapted for your mouse-hovering purposes. plot(x_axis, y_axis) plt. a formatting string starting with : for numbers d3-format's syntax, and | for dates in d3-time-format's syntax, for example :. 3. pack() CreateToolTip(button, text = 'Hello World\n'. 'button_release_event' MouseEvent - mouse button Jan 19, 2020 · cursor = mplcursors. 今回の記事はmatplotlibの使い方をメインにします。MNISTとか、t-SNEとかの説明は省略します。 ただどんな変数名でどうやって作ったかなどはプログラム依存ですので、そちらのコードを掲載します。 May 23, 2017 · Once you get the coords of the point you can show them or any object-linked info in a textctrl in the toolbar. matplotlib works with a number of user interface toolkits (wxpython, tkinter, qt4, gtk, and macosx) and in order to support features like interactive panning and zooming of figures, it is helpful to the developers to have an API for interacting with the figure via key presses and mouse movements that is “GUI Jun 7, 2018 · main() from matplotlib mouseclick event in pie chart. Gallery generated by Sphinx-Gallery. scatter(np. Here you have an example of customizing your toolbar (only showing Oct 26, 2011 · I am using matplotlib to make scatter plots. pyplot as plt from scipy. All figure windows come with a navigation toolbar, which can be used to navigate through the data set. ) SVG Tooltip #. The first method involves the use of “widgets” like buttons and checkboxes which can control and modify the graph. It is well developed and gaining a lot of traction in the python world as being a good option for creating interactive plots. Sep 17, 2015 · Matplotlib converts things to arrays when you plot the data. In that case colorize the wedge differently, else set its color to its original color. If you want something interactive, then the only way you're going to achieve this is by using a module that outputs javascript. Make a label / annotation appear, when hovering over an area (rectangle) 0. Nov 19, 2023 · This is a repost of python - How can I derive axis index from mouse click event? - Stack Overflow, which didn’t get any traction so far. Provide a vertical (default) and/or horizontal line cursor shared between multiple Axes. plotting import figure, show from bokeh. In this post, I'll show you how to make them interactive: 1. In the first block of code, a scatter plot is beeing created and there is a mouse hover effect, when hovering the mouse over a data point. My Example Code snippet: import matplotlib. Jan 21, 2017 · Matplotlib - tooltips on mouse hover. I have been studying the answer to this question, trying to make annotations visible when I hover over my data point. Example: [x,y] = [140, 1873]. class matplotlib. Create a basic Matplotlib Dec 21, 2019 · 1. In this article, the Cursor Widget of Matplotlib library has been discussed. 0 matplotlib notebook cursor coordinates on graph with double y axis . You would need a matplotlib event handler for a motion_notify_event. Jun 9, 2022 · This is one of the most requested topics so I thought I would finally make a video showing how to implement the feature when you hover your mouse on top of a Jun 17, 2020 · Interactive navigation. Here's a fairly small example: import matplotlib. Simple example: Step 1. Jun 28, 2021 · import matplotlib. xdata some arbitrary numbers I cant really define, but definately nothing between 180°W and 180°E. argmin () return array [idx] # Simple mouse click function to store coordinates def onclick (event): global ix, iy ix, iy = event. g. 25. I can't figure out how to modify the formatter accordingly. MultiCursor(canvas, axes, *, useblit=True, horizOn=False, vertOn=True, **lineprops) [source] #. 4; sklearn 0. Jun 26, 2020 · I need help writing a code that will display data when someones mouse hovers over my graph. # Generate data x, y for scatter and an array of images. 'button_press_event' MouseEvent - mouse button is pressed. import numpy as np import matplotlib. NoHover = 0 = False. io import output_notebook from bokeh. cursor(hover=True) plt. The new cursor inherits from Cursor and demonstrates the creation of new widgets and their event callbacks. Since they are rectangles (using Jun 11, 2018 · 2. Here is my dataframe: fig, ((ax1 Jul 12, 2020 · Matplotlib - tooltips on mouse hover. The second method involves the use of “events” and the mouse pointer. how to plot a dot each time at the point the mouse is True to add a different column, with default formatting. 1. Everything about the code works, except that the annotations are consistently showing up at the position where we initialized the annotation, and not at the position of the data point. Download Jupyter notebook: mouse_cursor. show' command near the bottom. figure. import matplotlib. Unfortunately it looks like it extracts the data points from the location where the mouse clicks rather than the original data set. Dec 29, 2017 · Is there a way to create a function that colour part of the chart in different colour when we hover mouse above a single value (for example part of the chart between hovered index and hovered index + 3) without creating a lot of Series objects and setting visibility of each sub-chart? I use ipython notebook (with the magic %matplotlib nbagg). I used draw_networkx_nodes to get the objects used for hovering and displaying tooltips instead of using draw_spring. Bokeh (link), another python library, is what you want. _on_move) Nov 12, 2014 · Event handling and picking. So I'd like to select two points clicking in the plot and get the initial and final x,y-position (e. You must specify an annotation point xy=(x, y) to annotate this point. tolist() y_axis = df['temperature']. 3. SVG Tooltip. These data cursors display information about specific data points when you hover your mouse over them, making it easier to explore and analyze your data. set_title("Mouse over a point") mplcursors. contains) and if it does, store the rectangle xy and the location of the mouse click in data coords. The %matplotlib inline backend displays the plot outputs as png images. format_coord) to a function that outputs an empty string: from matplotlib import pyplot as plt. Add annotation in an interactive plot. It interfaces nicely with Pandas DataFrames. To configure the integration and enable interactive mode use the %matplotlib magic: In [1]: %matplotlib Using matplotlib backend: QtAgg In [2]: import matplotlib. fig. This example adds a cross-hair as a data cursor. For points, I have found a way, but you have to use the WX backend. e. Here is a description of each of the buttons at the bottom of the toolbar. This function is responsible for updating the mouse Sep 6, 2019 · I am trying to come up a code to highlight a selected line (by click or mouse hover) into a red line. I know this is a big ask for help, I'm just totally stuck. runnable code where you have actually attempted to use that solution) - either by editing this Jan 21, 2018 · I want that when I hover the mouse over ax1 then ax2 and ax3 show the part of ax1 which is under the cursor, with 2 different levels of zooms. 0; numpy 1. plt. Download Jupyter notebook: cursor. More importantly, the new API automatically does the extra matplotlib work that the user previously had to do "manually" with the old API. For this you have to instantiate a toolbar (NavigationToolbar2Wx ()) in your canvas and add the textcontrol there. However, I think what you can do is to use the mouse move event. As the marker size is given in points (one point is 1/72 inches), I transform the data coordinates into figure coordinates, following the shadow effect transformation in the matplotlib transformation tutorial. x just gives the pixel position in the figure (as usual) and event. Nov 2, 2020 · To this end, I create a figure with two axes. Thanks. Just pass the widget and string you want to display in the tipbox to this function, and you're good to go. Nov 13, 2015 · Matplotlib can only create static images and animations. This example shows how to create a tooltip that will show up when hovering over a matplotlib patch. ): def zoom_fun(event): # get the current x and y limits. It is run on python 3. Cursor. 0 Jan 1, 2017 · Plotting it using interactive %matplotlib notebook shows the temperature, year/month on the bottom right, but omits the day. Persistent = 1 = True. {"payload":{"allShortcutsEnabled":false,"fileTree":{"":{"items":[{"name":"data","path":"data","contentType":"directory"},{"name":"README. Aug 2, 2023 · The New API. md","path":"README. However, the label I need to show wasn't originally used to create the subplot so I created a list containing all of the labels I need and another lists containing all of the points in the x-axis I want to be specified. The cross-hair is implemented as regular line objects that are updated on mouse move. #. pyplot as plt import numpy as np import mplcursors np. Cursor but the cursor is only viewed widgets. I want matPlotLib to print the corresponding name and factor of the value on which the mouse pointer hovers. This leads to some imprecision in the result. rand(20)) plt. property Axes. Interactive tooltips in matplotlib plot. We would like to show you a description here but the site won’t allow us. rand(9, 9) pressure = np Jan 18, 2021 · Table 2: The . gs db kj xw yl ij aa ua ek gm