altair | Declarative statistical visualization library for Python | Data Visualization library

 by   altair-viz Python Version: 5.3.0 License: BSD-3-Clause

kandi X-RAY | altair Summary

kandi X-RAY | altair Summary

altair is a Python library typically used in Analytics, Data Visualization applications. altair has no bugs, it has no vulnerabilities, it has a Permissive License and it has high support. However altair build file is not available. You can install using 'pip install altair' or download it from GitHub, PyPI.

Altair is a declarative statistical visualization library for Python. With Altair, you can spend more time understanding your data and its meaning. Altair's API is simple, friendly and consistent and built on top of the powerful Vega-Lite JSON specification. This elegant simplicity produces beautiful and effective visualizations with a minimal amount of code. Altair is developed by Jake Vanderplas and Brian Granger in close collaboration with the UW Interactive Data Lab.
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            kandi-support Support

              altair has a highly active ecosystem.
              It has 8297 star(s) with 734 fork(s). There are 149 watchers for this library.
              There were 1 major release(s) in the last 6 months.
              There are 176 open issues and 1622 have been closed. On average issues are closed in 1006 days. There are 20 open pull requests and 0 closed requests.
              It has a positive sentiment in the developer community.
              The latest version of altair is 5.3.0

            kandi-Quality Quality

              altair has 0 bugs and 0 code smells.

            kandi-Security Security

              altair has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              altair code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              altair is licensed under the BSD-3-Clause License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              altair releases are available to install and integrate.
              Deployable package is available in PyPI.
              altair has no build file. You will be need to create the build yourself to build the component from source.
              Installation instructions, examples and code snippets are available.
              altair saves you 10700 person hours of effort in developing the same functionality from scratch.
              It has 21719 lines of code, 1841 functions and 250 files.
              It has low code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed altair and discovered the below as its top functions. This is intended to give you an instant insight into altair implemented functionality, and help decide if they suit your requirements.
            • Add a window transform
            • Parse a shorthand
            • Infer the vegalite type
            • Returns a copy of this query
            • Creates a projection of the object
            • Set parameter properties
            • Returns a copy of this object
            • Temporarily change the debug mode
            • Evaluate the Altair plot
            • Evaluate code block
            • Mark a rule
            • Mark an image
            • Mark area
            • Mark an arc
            • Marks a tick
            • Mark text as highlighted
            • Mark a point
            • Marks a line
            • Add transform
            • Construct the source code
            • Add a regression transformation to a regression
            • Add a transformation to the dataset
            • Compute an ImputeTransform
            • Add an aggregate transformation to the query
            • Add a timeunit transform
            • Mark a geoshape
            Get all kandi verified functions for this library.

            altair Key Features

            No Key Features are available at this moment for altair.

            altair Examples and Code Snippets

            No Code Snippets are available at this moment for altair.

            Community Discussions

            QUESTION

            Is there a way to display the value of a mark next to the mark in Altair
            Asked 2022-Apr-03 at 16:37

            I was playing around with the following example from the Altair Gallery:

            https://altair-viz.github.io/gallery/airports_count.html

            As of right now, the only way to display the actual count appears to be via the tooltip, as the example shows. However, I am trying to code a static visualization for which it would be very helpful if the exact value was displayed right next to the mark itself, without the user having to hover or interact in any way. Is there a way to achieve this?

            ...

            ANSWER

            Answered 2022-Apr-03 at 16:37

            You can do this by manually calculating offsets for text labels, though this is admittedly difficult when the points become crowded:

            Source https://stackoverflow.com/questions/71720663

            QUESTION

            Changing overlap order of a line chart in altair
            Asked 2022-Mar-08 at 02:17

            I generate a line chart in Altair. I'd like to control which lines are "on top" of the stack of lines. In my example here, I wish for the red line to be on top (newest date) and then descend down to the yellow (oldest date) to be on the bottom.

            I tried to control this with the sort parameter of of alt.Color but regardless of sort='ascending' or sort='descending' the order of the line overlap will not change.

            How can I control this? Was hoping I can do this without sorting my source dataframe itself.

            ...

            ANSWER

            Answered 2022-Mar-08 at 02:17

            By default, graphical marks are plotted in the order they occur in the dataframe (as you noted), which means that the elements last in the dataframe will be plotted last and end up on top in the chart (called the highest "layer" or the highest "z-order"):

            Source https://stackoverflow.com/questions/71260969

            QUESTION

            Change single color in Altair plot
            Asked 2022-Mar-04 at 14:30

            Is there a way to change the color of just a single group in Altair plot, while leaving the rest the same? I like the default color scheme fine, but there is one group I want to change the color for.

            For example, in a scatter-plot like this:

            ...

            ANSWER

            Answered 2022-Mar-04 at 14:30

            One way to do this is with an alt.condition, although the updated color will not appear in the legend:

            Source https://stackoverflow.com/questions/71352135

            QUESTION

            Change the width of a chart plot with different number of bins
            Asked 2022-Mar-03 at 18:26

            I have the following chart (code is at the end)

            and I need to increase its width.

            If I set alt.Chart(df, width=100, height=90) then the bar width of the group with fewer bars is too large, like this

            If I set alt.Chart(df, height=90).mark_bar(size=20) then bars overlap, like this

            ...

            ANSWER

            Answered 2022-Mar-03 at 18:26

            Rather than specifying the width of the bars (which does not affect the default width of the chart), you can specify the chart width via the step property, which will adjust both the bar width and the chart width together:

            Source https://stackoverflow.com/questions/71329362

            QUESTION

            How do i set the domain of an axis to a value that isn't a multiple of five in Altair?
            Asked 2022-Feb-10 at 13:20

            I'm trying to set the x-axis domain to between 0-36, as some data I'm processing was collected in 6-week increments. Following the documentation i used the scale=alt.Scale(domain=[0,36]). However, this continues to show the chart up to 40.

            ...

            ANSWER

            Answered 2022-Feb-10 at 13:20

            The Vega-Lite renderer defaults to choosing "nice" values for the scale. If you want to disable this behavior, you can pass nice=False:

            Source https://stackoverflow.com/questions/71060268

            QUESTION

            Altair: How to color when there are more categories than colors available
            Asked 2022-Feb-08 at 01:33

            Here is the code taken from the Altair documentation on color schemes.

            ...

            ANSWER

            Answered 2022-Feb-08 at 01:33

            It is not possible to extend a color scheme automatically via Altair/VegaLite. You would need to manually define the colors you would want to use, or switch to another color scheme, as you mentioned.

            Note that when you are using this many categorical colors, it can become quite difficult for the reader to parse the information in the plot and it is usually better to break down the plot into multiple plots via faceting, or use labels/hovering to encode some of the information instead of relying solely on color. There are some good pointers on this topic in this book chapter.

            Source https://stackoverflow.com/questions/71024715

            QUESTION

            Can't deploy streamlit app on share.streamlit.io
            Asked 2021-Dec-25 at 14:42

            I am working with a simple ML model with streamlit. It runs fine on my local machine inside conda environment, but it shows Error installing requirements when I try to deploy it on share.streamlit.io.
            The error message is the following:

            ...

            ANSWER

            Answered 2021-Dec-25 at 14:42

            Streamlit share runs the app in a linux environment meaning there is no pywin32 because this is for windows.

            Delete the pywin32 from the requirements file and also the pywinpty==1.1.6 for the same reason.

            After deleting these requirements re-deploy your app and it will work.

            Source https://stackoverflow.com/questions/70480314

            QUESTION

            Vega: empty bar mark
            Asked 2021-Dec-20 at 20:29

            Does Vega/Vega-Lite/Altair have a builtin method to draw a special mark for empty bars? When x == x2 no mark is currently shown. Perhaps a vertical rule mark of the same expected bar color as derived from a third encoding? Or perhaps a semi-transparent bar mark covering an expanded region with a red border?

            ...

            ANSWER

            Answered 2021-Dec-20 at 20:29

            You can set the stroke color for the outlines of the bars using something like mark_bar(stroke='gray') (it defaults to transparent): then empty bars will be shown by their outline:

            Source https://stackoverflow.com/questions/70408857

            QUESTION

            How do I show all values in an aggregated tooltip?
            Asked 2021-Dec-09 at 03:21

            I would like myval to show the name of each car for each aggregated year, ex. "chevrolet chevelle malibu".

            The [object Object] thing appears to be JavaScript related.

            ...

            ANSWER

            Answered 2021-Dec-09 at 03:21

            This is a great question, and I'm not sure there's a satisfactory answer. The reason this is displayed as [object Object], [object Object], etc. is because the values aggregate returns a list of the entire row for each value. So the full representation would be something like this:

            Source https://stackoverflow.com/questions/70268953

            QUESTION

            Removing space between marks in altair visualization
            Asked 2021-Dec-05 at 00:06

            I have a visualization where I am trying to increase mark size and also have them touching (decrease the space in-between the marks) using altair. Is there a way to do this without simply using 'size='? I would like to make this adaptable to a function and not hardcode the size, but have it dependable on the data given.

            Here is my current code so far:

            ...

            ANSWER

            Answered 2021-Dec-04 at 23:39

            size is propierty from Altair then is used to manipulate Marks size and so it is for point/circle/square, please check altair-viz.github.io/user_guide/marks.html?highlight=mark_square. To show how it could be used through a function I did this:

            Source https://stackoverflow.com/questions/70230231

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install altair

            To use Altair for visualization, you need to install two sets of tools. Altair can be installed with either pip or with conda. For full installation instructions, please see https://altair-viz.github.io/getting_started/installation.html.
            The core Altair Package and its dependencies
            The renderer for the frontend you wish to use (i.e. Jupyter Notebook, JupyterLab, or nteract)
            Altair requires the following dependencies:.
            pandas
            traitlets
            IPython

            Support

            See Altair's Documentation Site, as well as Altair's Tutorial Notebooks.
            Find more information at:

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            Install
          • PyPI

            pip install altair

          • CLONE
          • HTTPS

            https://github.com/altair-viz/altair.git

          • CLI

            gh repo clone altair-viz/altair

          • sshUrl

            git@github.com:altair-viz/altair.git

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