Plotly mouse events. I’ve been looking through this page, but couldn’t find the one I want. Is there perhaps an alternative non-browser way to plot it Just starting to use plotly with Python and trying to figure out how to receive mouse events. That works well. This forces the plot axis to be reset, which is quite annoying, especially because when the plot is first loaded I’m disabling any zoom/drag action to avoid I need to capture mouse down and mouse up events in a Plotly graph. Instead of showing the whole plot, unshadow the next value on demand (aka append a new value). By ‘x, y’ coordinates I don’t mean mousedown. APIs for R and Python. If yes, then how. I would like to capture mouse position according to all axis and provide popup with all 4 dimensions coordinates in real time . o… I’ve noticed that the mouse interaction with mesh3d is connected mousemove → hover mousedrag → pan/zoom/rotate Is there any way to disable this default mouse event behaviour and can we code different callback behaviours based on those mouse events? I’m developing an application in which I need to get the ‘x, y’ coordinates of the mouse when the user clicks the screen. I would It'd be awesome to have dedicated events for obtaining the mouse position (in graph paper/axis coordinates) upon clicking/hovering anywhere on a plot. I also added a callback that disables/enables the updates. js community forums, there seems to be one frequently asked question that has not yet been answered: how can you get accurate coordinates from a click event on a Plotly chart? The tap event is properly triggering (log statement is printing), it’s just that the code in tapEvent is not successfully triggering a “plotly_click” event (or a “plotly_hover” event when I change to dispatching a “mouseover” event instead of “mousemove”, “mousedown”, “mouseup”, and “click” events). I’ve been observing this in the last few months but I’m not sure when it started and whether is related to my mistake or to a new version of plotly/dash. The callbacks I’ve seen on the plotly samples are for a scatter plot, I haven’t see the same references when using px. Jun 25, 2017 · I was playing over the last days with the new Dash library and came across the following problem: Is there a way, to get the mouse position over the graph and e. Dash Python > Overview > Click and Hover Callbacks Introducing Plotly Cloud — The easiest way to publish your Dash apps. imshow(). I add header html to import plotly. 'plotly_click', 'plotly_hover', 'plotly_relayout') when interacted with (clicked, hovered, zoomed). However, it seems that plotly does not have a mousedown event. You have any tip on improving the performance? Although it’s such a simple example, I Streamlit component that allows Plotly events to bubble back up to streamlit. Appreciate for any guidance! Hi there, I have recreated this index chart in Dash. Detailed examples of Click Events including changing color, size, log axes, and more in JavaScript. draw a vertical line at the position of… How do I make interactive buttons in plotly, that will change the chart and send their interaction to streamlit? I have tried using the built in buttons in plotly Learn how to effectively handle mouse events in Plotly Dash's `dcc. Here is my screenshot for more clarification. It’s kind of like I use my mouse to draw the plot. But the hover pop-up follows the mouse, I do not need it, and it’s quite Hey, all! I have a graph with 1 xaxis (timestamp) and 3 yaxis (power DB, Distance, Altitude). I’m wondering is it able to get user mouse’s position when user click on the plot? What I want to achieve is, when I click on the plot, I can get the correspond x and y value on this plot, so that I can then plot this point on the graph. Nov 5, 2025 · In order to obtain this event data, please add event_register (p, 'plotly_click') to the plot (p) that you wish to obtain event data from. I am running this piece of code in a Jupyter notebook. It works. I’m trying to window. newPlot (div, traces)) this. It helps users to explore data through features like zooming, additional details and clicking for deeper insights. js). Slider` for dynamic updates in your application. e. But for some reason no events are emitted when users hover over the In order to obtain this event data, please add event_register (p, 'plotly_click') to the plot (p) that you wish to obtain event data from. com/python/click-events/). I want the values of co-ordinate and those values should be reflect in x and y axis not into the canvas is should be in axes only. Below is an example. y = df[[‘Classification’, ‘City mpg’]], yaxis=‘y2’ as well as a separate Trace. on_click(self. clientY, I need to know the data coordinates (or an approximation of it) of the point in which the users clicked in the graph (on the graph’s scale) and this points is not necessarily part the Hi Team, I need to access the x-axis date value on every mouse movement. Can we get the values between two grid when ever hover the mouse?. offline as py import pandas as I need to listen to mousedown events (not a full click) on the y-axis and perhaps the main plot area, but my events only trigger on the margins. Online chart and graph maker for Excel and CSV data. Makes Plotly charts interactive! - JoOkuma/streamlit-plotly-events I am trying to adapt this plotly script example, allowing to populate a table using a plotly mouse selection event. Detailed examples of Hover Events including changing color, size, log axes, and more in JavaScript. 5 I would like to know whether it's possible to change how the mouse mouse navigation works in Plotly (for python) In matplotlib you could enable the pan/zoom mode to control the figure with just 2 mouse buttons. (Correction: see my reply below) How do I register the mouse event? There is almost no documentation left after plotly does no longer support R directly. 0, Python 3. When doing a single click over a plot in mobile a mouseup event is triggered. 10. Can anyone test and let me know what i’m doing wrong? Thanks! import plotly. So, I’m using the example below to replicate the interactivity, but when I select an area on the graph the table doesn’t update on my notebook. I first thought it’s maybe because I unnecessarly repaint all three graph’s on each callback event, but even when I tried only to visualize a single moving line under the mouse, it’s really laggy. However, the normal QUnit click helper does not seem to trigger this, although clicking on the point in the same test scenario with a mouse/pointer does. How can I do this without killing the default Plotly interactions? In particular, can I detect mousedown on the y-axis but still keep the possibility of zooming by dragging the y-axis? I should point to this related post, but it just confused me even In addition to the event handler, some events emit additional information about the point (s) or plot interacted with. Graph component when the user hovers the mouse over the graph. I want to display the axes values after selecting any area on the graph. Plotly has a tutorial of how to take the plot and change the color of the data points (in jupyter using the click event https://plotly. This causes the camera to move randomly if any hint of drag occurs with the click. js uses a “coverSlip” that grabs all the mouse event and If the user clicks on the plot without releasing the mouse (which causes a mouse down event to trigger but not a plotly click event to trigger) then 'Uncaught (in promise) undefined" errors are reported in the console. Talking about ~3-5 updates per second. ---This video is based on the question htt Plotly 5. Use the right button to scale the figure either vertically or @chriddyp but it’s really laggy. But the hover pop-up follows the mouse, I do not need it, and it’s quite Hi all! I need some heeelp. Appreciate for any guidance! I'm wondering is it able to get user mouse's position when user click on the plot? What I want to achieve is, when I click on the plot, I can get the correspond x and y value on this plot, so that I can then plot this po… Like done by Selection Events by Plotly. Hey everybody, I was playing over the last days with the new Dash library and came across the following problem: Is there a way, to get the mouse position over the graph and e. o… Streamlit component that allows Plotly events to bubble back up to streamlit. 14. In this article, we will see plotting in Just starting to use plotly with Python and trying to figure out how to receive mouse events. Hi Team, I have one question regarding spikes. I’ve used jupyterlab as well as the regular jupyter-notebook without success. This is a gif of the chart in the link: The data is dynamically updated by a callback that listens to the hoverData property of the dcc. Try Plotly Studio now. Event handlers can be bound to events using the . on method that is exposed by the plot div object. Right now it is triggered by clicking on the graph area, that is, a change in the My goal is obtain a pair of x,y coordinate through two mouse clicks on the graph, so that I am able to draw a line on the graph using that pair of coordinates. The solution suggested here also does not work, as I’d need information of the bar that is clicked to be able to selectively change the color. g. I’ve been modifying the code below; however, the best thing i get is an overlapping yaxis with the 2nd variable. Use the left button to scroll along the graph in any direction. So i cannot use hoverdata because it is messy and provide not usefull information. Definitely I would like a click event to get the picked point infomation and display something on the figure, so the JS event doesn't fit. When I use pdb in the update function selection_fn I see that it never goes to it when I select an area with the Mouse . open on a click on a point in a 3D surface plot. The interactive plotly graph allows to interact with different plots. is it possible for plotly in R, for a mouse click or a mouse over to trigger an event? For example, to display certain image when it is mouse over at certain point with a date? If yes, are there any good examples? Thanks. I tried adding additional columns as a dictionary i. Learn more. Hi, I’m interested in capturing mouse events like mouse hover, mouse click etc, when users interact with plotly objects. When I Across StackExchange and the Plotly. If I am right, there is no such event in Plotly, so I need to use the native ‘onmousemove’ event. Specifically, when I click using my mouse, it doesn't react. 04, running in Jupyter Notebook I am following the example described here: When I click on the image, I need to capture the coordinates of the click and use them in the app. I’ve been able to run the scatter plot example: When I try to adapt this for a pie chart, though, the callback doesn’t look like it’s ever being called. I have . Is there no way to receive mouse events with Python alone (I am using VSCode if this matters)? I get it that the plotting is done in a browser. Thanks for your answer… However I already build the whole application with flask, bootstrap and plotly. To do this we are writing a separate javascript function, which uses annotates the HTML with onmouseover and onmouseclick attributes to capture mouse events, using the document. addEventListener() function. If you mousedown on the plot without releasing the mouse you’ll see errors reported in chrome console. draw a vertical line at the position of the mouse? Jul 28, 2025 · Plotly is an open-source Python library designed to create interactive, visually appealing charts and graphs. I’m not sure if this is possible and there’s something missing in my adaptation, or if it’s a capability I’m wondering is it able to get user mouse’s position when user click on the plot? What I want to achieve is, when I click on the plot, I can get the correspond x and y value on this plot, so that I can then plot this point on the graph. In addition to the event handler, some events emit additional information about the point (s) or plot interacted with. Plotly graphs emit events prefixed with plotly_ (i. As pointed in this SO post However, how to distinguish the mouse moving in and out behavior? I recorded the index of the points, e. I have already adapted the example but nothing happens on a Mouse Selection. Jul 3, 2023 · 0 I would like to create a candle simulator where the next value is plotted after an event (mouse click or timer). It looks like plotly. But for some reason no events are emitted when users hover over the All Add Custom Interactivity with Jupyter Widgets All Plotly charts have click, hover and zoom events which can be accessed by go. , index of the current hover, and index of the previous hover. graph_objs as go import plotly. It handles the interactivity with JavaScript behind the scenes so that we can focus on writing Python code to build the charts. js, and run plotly initializing script after button clicked. Far away from JS performance. Dash doesn’t give you much freedom. The following Plotly events make it possible to trigger actions based on front-end interactions with Plotly objects such as clicks, mouse hovers, widget or tool interactions, etc. However, it seems Plotly's Dash Interactive Graphing is limited in its ability to provide mouse coordinate data that are not on actual data points. div. I’m trying to implement a custom context menu but the plotly_selected event is messing it up. It seems as if “plotly_click” is fired on mouse down then the windo… Hi All, How to get the coordinate values (x-axes and y-axes) on click and drag events (for the selected area of graph) on graph. Distancce and Altitude have one scatter plot each, and power DB has about 100 scatter plots. Is there a way to achieve this? However, how to distinguish the mouse moving in and out behavior? I recorded the index of the points, e. draw a vertical line at the position of… My goal is obtain a pair of x,y coordinate through two mouse clicks on the graph, so that I am able to draw a line on the graph using that pair of coordinates. Click Events in Python Click Events With FigureWidget Plotly Studio: Transform any dataset into an interactive data application in minutes with AI. Thanks i'm trying to change cursor from pointer to default when hover event occurred on plotly's graph legend legend: { cursor: "default", x: xLegenda, y: yLegenda, I need to capture mouse down and mouse up events in a Plotly graph. So far all the docs I’ve seen seem to imply that the code needs to run on a Jupyter notebook. To finish I need to capture a mouse click event on a point (scatterplot) to trigger an action to decrease the opacity of some points and maintain of the rest… I don’t know how to get that mouse Hey everybody, I was playing over the last days with the new Dash library and came across the following problem: Is there a way, to get the mouse position over the graph and e. clientX and mousedown. I’m trying to figure out if it’s possible to create a PlotLy Pie Chart in python with an on_click event in JupyterLab. The data gets initially shown (all the data) but it does not update. I'm using Plotly writing a webpage. click_handler) set on the figure, it gets the mouse click events. When I hover over the image, it tells me the mouse coordinates and RGB color values so I know there must be some sort of interaction there. This could be useful for many things, including adding annotations on click in a dash/shiny application. 6, Ubuntu 22. Why this event is being emitted in case of right click? Is this intended behaviour? You cant select with right mouse button, t… How to register mouse click and drag events in Plotly Dash? Asked 5 years, 4 months ago Modified 5 years, 4 months ago Viewed 3k times Thanks for replying. The problem is that when I'm using the Plotly_onclick event, there seems to be something wrong. Makes Plotly charts interactive! - w9/streamlit-plotly-events Similar to this topic, I am trying to simulate click events in an acceptance test (to ensure that my component is correctly forwarding them from plotly. Plotly 5. I’ve noticed that the mouse interaction with mesh3d is connected mousemove → hover mousedrag → pan/zoom/rotate Is there any way to disable this default mouse event behaviour and can we code different callback behaviours based on those mouse events? Detailed examples of Click Events including changing color, size, log axes, and more in JavaScript. The following documentation organizes Plotly events based on the accessible information emitted with the event: event data, update data, or no additional data. FigureWidget using Jupyter Widgets. Hi All! I’ve been trying to add dual yaxis to a slightly modified (timeseries form) IpyWidgets sample without much success. I post my code, which run the JavaScript to achieve picking event. I was using the mouse down and mouse up events of the div containing the Plotly graph (the one that I called Plotly. fcdg, vi6jm, ewkb, pn8u, y90qh, 8tj61, ffr1r, htiy, tek1, xm3ljg,