Bokeh multiple legends Using matplotlib there is a simple keyword ncol but I cannot find a way to do it in bokeh. It renders its plots using HTML and JavaScript. The legend can be defined in terms of title, shape and Jul 23, 2025 · Prerequisites: Bokeh Bokeh includes several types of annotations to allow users to add supplemental information to their visualizations. line, bokeh. These modes are activated by setting the Nov 10, 2025 · URL: https://docs. Titles # Use Title annotations to add descriptive text which is rendered around the edges of a plot. These modes are activated by setting the click_policy property on a Legend to either "hide" or "mute". If you use the legend_label argument in the plotting functions such as quad () or line (), the plot labels are appended to the p. import numpy as np from bokeh. The plot needs to be updated on the fly based on user choices in widgets that allow changing the subset plotted or the preferred color scheme to highlight entries with various properties. figure. Jan 2, 2025 · Learn how to add and customize legends in Bokeh plots - from basic legend placement to advanced styling options for creating clear, professional data visualizations. My requirement is similar to plotting legend for the iris plot. Titles: Use Title annotations to add descriptive text which is rendered aro Apr 24, 2023 · Hi all, I really need to use multi_line for my 100-or-so curves plot, otherwise it will be excruciatingly slow. But all I need now is . Bokeh renders its plots using HTML and JavaScript that uses modern web browsers for presenting elegant, concise construction of novel graphics with high-level interactivity. stocks import AAPL, MSFT def datetime(x Sep 7, 2021 · In Bokeh, the legends correspond to glyphs. Dec 14, 2018 · Thanks to the new features available in Bokeh >= 1. Features of Bokeh: Renderers This includes axes, grids, legends and other annotations. line,, More info, Two dimensional legends,, Keyword Nov 26, 2022 · In this article, we will be learning about how to create a two line legend in the bokeh plot. Now, I want to add a legend using the colors used for the image. In this Answer, we’ll learn to add different annotation types to our Bokeh charts. Check out this First steps 3: Adding legends, text, and annotations # In the previous first steps guide, you generated different glyphs and defined their appearance. Below is an example of two data set, based on the country, the column data sourc… Nov 12, 2019 · Python Bokeh, How to hide the same line from multiple legends Asked 5 years, 10 months ago Modified 5 years, 10 months ago Viewed 1k times Mar 8, 2024 · In Python, the Bokeh library can be used to create interactive and visually appealing multi-bar plots. 30 “features” in one plot will always be overwhelming, so maybe you would have to split up your data into several plots. Conclusion Customizing legend position in Holoviews and hvplot is straightforward with the legend_position parameter in opts(). How do I remove the old legends and only show the current active legend? Jul 25, 2023 · Hi, I have two circle glyphs, each at the end and the beginning of a segment. You will also add additional information to your plot by including annotations. 0, I was hoping to make progress towards improving the performance issues described in #7066 for plots with multiple lines and multiple markers (and multiple line dashes, but that deve Jun 30, 2020 · Learn how to combine multiple Bokeh plots into different kinds of layouts on a page, how to easily link different plots together, and how to add annotations such as legends and hover tooltips. org/en/latest/docs/examples/basic/annotations/legend. Yes but this doesn't quite seem to work for scatter plots. Plotting a line graph can be done using the line() method of the plotting module. I use the legend_field option to accomplish this. Second, you customize these building blocks to fit your needs. Over here, there are only 3 lines to be plotted, so 3 plot for line statements and 3 for legend. Other than that if we need to plot different lines of different colors in the same plot, we can differentiate them using legend. palettes More info: Legends Keywords: line, time series, legend Sep 27, 2025 · Python Bokeh is a Data Visualization library that provides interactive charts and plots. Nov 25, 2016 · To plot multiple lines, I have tried using p. First steps 1: Creating a line chart # With just a few lines of Python code, Bokeh enables you to create interactive, JavaScript-powered visualizations displayable in a web browser. The issue here is that I need two legends to display this: one with circles of different colors to display the color-coded characteristic, and another with different shapes to display the Jan 1, 2025 · Learn how to use Python Bokeh's figure() function to create interactive plots and visualizations. sampledata. Donations help pay for cloud hosting costs, travel, and other project needs. I expected to be able to turn curves on and off by clicking on legend items, as in normal line plots, but actually this affects the whole set of curves. May 1, 2023 · Hi everyone! I am trying to create a scatterplot graph in which the points have different shapes due to one characteristic and different colors due to a different characteristic in my categorical dataset. Annotations are used to add notes or more information about a topic. Bokeh makes it easy to implement such features with minimal effort. It targets modern web browsers for presentation providing elegant, concise construction of novel graphics with high-performance interactivity. It works wonderful. Using this function, I can generate multiple objects - lines, shapes - on the same figure. It seems that it was not feasible as bokeh could only modulate visibility of a single (entire) glyph at a time: but using the Jun 9, 2021 · My issue is that I'm plotting many time series in one plot using hvPlot (which uses bokeh), and there are many legend labels (49, to be exact). This is the Summary of lecture “Interactive Data Visualization with Bokeh”, via datacamp. Adding legends to your figures can help to properly describe and define it. Apr 10, 2020 · Dynamically adding and removing Bokeh legends Asked 5 years, 7 months ago Modified 5 years, 7 months ago Viewed 3k times Single lines: The example below shows how to generate a single line glyph from one-dimensional sequences of x and y points using the line() glyph method: Step lines: For some kinds of data, discret Annotations # Bokeh includes several different types of annotations you can use to add supplemental information to your visualizations. 2 Documentation There may, however, be other approaches more suitable to your problem. models import Legend, LegendItem from bokeh. In this section, you will add and style a legend and a headline. I am providing the code below for your reference: # Function to generate shapes def draw_shape(figure Multiple legends are showing when I use Bokeh and the radio button to switch between plots. They help us to differentiate between different glyphs used in a plot. This example shows different ways to place legends on a graph using the different location values included in the enumeration LegendLocation. We’ll use the same graph to add different annotations. It seems that multi-column legends are yet to be implemented in bokeh (see #3880 and holoviz/ May 20, 2023 · Hello. This article provides solutions to showcase comparative data using multiple bar plots with Bokeh, enabling a clear understanding of differences and trends across datasets. add_layout(p Interactive legends # Legends added to Bokeh plots can be made interactive so that clicking or tapping on the legend entries will hide or mute the corresponding glyph in a plot. Different colors and legends help distinguish between the data Dec 20, 2019 · I have a two-dimensional array that I want to plot using bokeh's bokeh. When I select points in one plot (even in multiple glyphs), they are selected in all the other graphs because I am sharing the same list of data sources. Also, we can change various properties of Jul 23, 2025 · Prerequisites: Bokeh Bokeh includes several types of annotations to allow users to add supplemental information to their visualizations. These 3 components are actually representing 1 entity in my plot. Master x and y coordinates plotting with customization options and practical examples. Bokeh can help you do that, too. Any advice on how I can have two legends or a single legend with multiple columns below my main plot without creating tons of white space? Thanks, Justin Legends added to Bokeh plots can be made interactive so that clicking or tapping on the legend entries will hide or mute the corresponding glyph in a plot. To do that, Bokeh Jun 13, 2016 · Bokeh Docs We are working towards a freeze for 0. Bokeh is a fiscally sponsored project of NumFOCUS, a nonprofit dedicated to supporting the open-source scientific computing community. By using interactive legends and JavaScript callbacks, you can provide users with the ability to explore data in a dynamic and engaging manner. location = "center" as a normal way. There isn’t an automatic feature for multi-column legends in bokeh, but I’ve been told it can be done manually by specifying multiple Legend objects. multi_line. plotting. Check out this example for some idea: Styling plot elements # Selecting plot objects # If you want to customize the appearance of any element of your Bokeh plot, you first need to identify which object you want to modify. Learn how to effectively hide multiple glyphs with 17 hours ago · In data visualization, legends serve as a critical bridge between the plot and the viewer, translating visual cues (like colors or line styles) into meaningful labels. py, it would be nice to be able to generate multiple, distinct legends. Feb 28, 2016 · When following the bokeh docs for making gridplots, if I use figure 's legend keyword argument I get a legend inside each subplot. plotting import figure, show from bokeh. Each data source is plotted using figure. stocks,, Bokeh AP Jun 30, 2019 · 2 how can I create one legend to control multiple bokeh figures? Or how can I customize an exported html file created with bokeh to add legend with similar functionality? Here is the scenario. Jun 23, 2017 · There's one more possibility: * Legends are configured by a collection of LegendItems * It's possible to have more than one legend So, it should be possible to split the LegendItems from the default legend up in to two or three groups and add them to Legends that you explicitly create and position for each group. Details Bokeh APIs, figure. ) I used a Annotation in Bokeh allows us to add elements like titles, legends, labels, bars, and arrows. line () Syntax legend_hide # The legend_hide feature is used to hide corresponding lines on a plot. Demonstrates how to modify a Legend to have multiple columns or rows by setting an explicit value for ncols and nrows. The code below raises a RunTime error: from bokeh. This graph uses stocks dataset. Before moving forward, let’s click the “Run” button in the widget below to draw a simple graph. image. 12 which will have the ability to put legends outside the central plot region, as well as array legends horizontally (no support yet for multiple columns but you could split up and create two legends "by hand" if necessary). plotting. Method 1: Using VBar Glyphs for Side-by-Side Bar Plots Oct 8, 2014 · According to the Bokeh documentation and bigreddot, one way is to use the Legend command. The legend also needs to update based on the new color scheme. Jan 1, 2025 · Learn how to use Bokeh add_layout () to add annotations, legends, and titles to your plots. Jan 1, 2025 · Learn how to create interactive line plots using Python Bokeh line() method. To put the legend outside, you should use p. Any help appreciated. Adding and styling a legend # Bokeh automatically adds a legend to your plot if you include the Dec 8, 2016 · I am trying to set the number of columns in the legend using bokeh. To do that, Bokeh Mar 8, 2024 · Method 2: Multiple Lines To compare various data sets side-by-side, Bokeh allows the addition of multiple line glyphs on the same figure. Additional keyword arguments: location: One of "center" (default), "left", "right", "below" or "above". I don't fi Mar 20, 2018 · Interactive legends — Bokeh 3. The iris plot has 3 different colors, so I would a need a legend for 3 colors and their description. I have created a Python function which creates a bokeh object. We can customize the legend with its several attributes such as location, color, line-color, font-size, font-style line width. This legend can be customised by following attributes ? In this video, we’ll explore the powerful features of Bokeh's interactive legends and how they can enhance your data visualization experience. Figure. As described in Introduction, Bokeh plots are a combination of Python objects that represent all the different parts of your plot: its grids, axes, and glyphs, for example. I am actually using a list of data sources (like the 4 data sets the example) across multiple graphs. (Please note that the red rectangle is not part of the plot but just a visual indicator. In Problem description At the moment it is not possible to use legend_label to add labels to a legend if multiple legends are defined. Each figure has a legend with labels/names for individual lines that are shown in the particular figure. Whether you're Bokeh includes several different types of annotations you can use to add supplemental information to your visualizations. layouts’ object. How do I remove the old legends and only show the current active legend? I'm providing simplified code and have CategoricalColorMappers working in the full version where colors change depending on factors. Adding and styling a legend ¶ Bokeh automatically adds a legend to your plot if you include the Various glyphs in a plot can be identified by legend property appear as a label by default at top-right position of the plot area. Legends are one of the most essential parts of a bokeh plot. html Most examples work across multiple plotting backends, this example is also available for: Adding annotations ¶ Bokeh includes several different types of annotations you can use to add supplemental information to your visualizations. Doing this would have the effect of a “multi-colunm” legend. This article how Legends appearing in the bokeh plot can be customized. Details Sampledata, bokeh. Hope you are all well. Now bokeh provides us with a variety of glyphs that can be used to represent a point in a plot. How to make Interactive legends? The legend of a graph reflects the data displayed in the graph's Y-axis. However, default legend settings in Bokeh—an powerful Python library for interactive visualizations—often result in thin, hard-to-distinguish lines, especially in presentations, printed materials, or high-resolution displays First steps 1: Creating a line chart ¶ With just a few lines of Python code, Bokeh enables you to create interactive, JavaScript-powered visualizations displayable in a web browser. stocks Bokeh APIs: figure. If you use the bokeh. Doing this would have the effect of a "multi-colunm" legend. May 4, 2018 · Hello, I have a use case where I have multiple line plots (with legends), and I need to update the line plots based on a column condition. This example shows a graph with multiple legend. The location of the legend is defined by p. A comprehensive guide with examples and customization options. This method requires separately providing each set of data points and calling the line method for each data set you wish to appear on the graph. I found another way. Is it possible to group them under 1 single legend item? Please see the image: The bit inside the red rectangle should be treated as one single entity. Some objects have convenience methods Mar 3, 2019 · Yes, I understand why it is happening, but it would be great if interactive legends and selections worked together. This can be used to depict a comparison between two datasets. 0. 3. I have been trying to add legends and hover tools to the objects generated by the function, but having issues. Then in my case I’d have: [ [plot], [legend1, legend2], [datatable]]. com/bokeh/bokeh/blob/master/examples/plotting/file/twin_axis. plotting import show, figure, output_notebook from boke 4 days ago · Fix: Stick to Bokeh for consistent interactive legends: hv. multi_line, which worked well but I also need a legend and, according to this post, it's not possible to add a legend to a multiline: Bokeh how to add legend to figure created by multi_line method? Jul 23, 2025 · Output: Interactively Display and Hide Lines in a Bokeh Plot Conclusion Interactive plots can greatly enhance the usability and effectiveness of data visualizations. This examples demonstrates an interactive line chart for stock prices over time which allows the user to click on the legend entries to hide or show the corresponding lines. Tools Additional keyword arguments: Mar 8, 2024 · I have a plot with two data sources. Bokeh can be used to plot a line graph. We can modify it using the legend attribute with the required property name. I’ve found this SO post which does what I Feb 11, 2019 · Multiple legends are showing when I use Bokeh and the radio button to switch between plots. Annotations can be titles, legends, Arrows, bands, labels etc. Jun 10, 2021 · I’m plotting a bokeh figure with ~250 different time-series, and I’d like the legend to have multiple columns to avoid the legend extending off the figure, cutting off the majority of entries. bokeh. Check out this When dealing with multiple axes as in https://github. The basic idea of Bokeh is a two-step process: First, you select from Bokeh’s building blocks to create your visualization. Details Sampledata: bokeh. How could I get a shared legend for the entire gridplot? Further, how could I get a shared legend between say 3 out of 4 of the subplots? Oct 10, 2017 · It would be nice to have multiple columns in a legend, or to be able to add the legends to the ‘bokeh. Master plot customization with detailed examples and best practices. Jul 3, 2020 · Bokeh is a Python interactive data visualization. extension('bokeh'). legend. Jun 23, 2017 · So, it should be possible to split the LegendItems from the default legend up in to two or three groups and add them to Legends that you explicitly create and position for each group. I create an html file with 4 different figures. plotting interface, the quickest way to add a basic title is to pass the text as the title parameter to figure(): First steps 3: Adding legends, text, and annotations ¶ In the previous first steps guide, you generated different glyphs and defined their appearance. dimension: For axes, you must specify either the location or dimension and the other one is inferred. Whether you need a legend at the bottom for horizontal readability or a styled legend with a light gray background, these tools offer Dec 8, 2021 · In this article, we will be learning about multiple glyphs and also about adding a legend in bokeh. Jul 28, 2020 · Bokeh is a Python interactive data visualization. Jun 22, 2017 · There's one more possibility: * Legends are configured by a collection of LegendItems * It's possible to have more than one legend So, it should be possible to split the LegendItems from the default legend up in to two or three groups and add them to Legends that you explicitly create and position for each group.