Happy Tuesday,
Here is the this morning’s Dash Club newsletter. Lot’s of great stuff in here!
Many of these features are available in this morning’s release:📣 Dash 0.39.0 released
Eight Thousand Stars
Our GitHub project earned its 8,000th star last week. Hard to believe it’s only been a year and a half. Many thanks to everyone who helped us get here, from our community forum moderators to our growing community of commercial customers.
It’s been a really busy couple of months. We’ve been focusing a healthy mix of new chart types (sunbursts & sankey diagrams), new component libraries (cytoscape network graphs & image editing tools), deep architectural changes (multiple outputs, callback contexts), and developer experience enhancements (JupyterLab support). Listing them all out here so you can get more information. Excited to see what you build!
Support for Multiple Outputs
Remove hidden divs and dcc.Stores by updating multiple outputs from a single callback. Example & feedback.
Dash Callback Context
New dash.callback_context allows you to determine which input has changed & simplifies complex callbacks with many positional arguments. n_clicks_timestamp is no longer necessary. Check out an example in the user guide.
Loading States
We’re making it easy to display loading spinners on individual graphs or your app at large. Try it out and let us know how it goes.
Dash DataTable Data Types & Number Formatting
Cell formatting is now available in DataTable: round your floats, add percentage signs, or prefix cells with currency symbols. View the docs.
Dash DataTable Tooltips
Hover over cells and see their values. Check out a demo or get started with DataTable.
Dash Cytoscape Network Graphs
Fast, interactive, WebGL-enabled network graphs are now available in Dash. Read the announcement, try it out, and throw a star on it.
Circular Sankey Diagrams
Flows that recycle. View the development or drag some nodes around in an online demo. Also, flows can now be colored by their concentration.
Animated Transitions
Use the new transition argument to smoothly animate figure updates in dcc.Graph. Examples and discussion.
3D Isosurface Plots
Isosurface is our latest 3D chart type. View the development or check out demo.
Multi-level Categorical Axis Labels
Use multi-level category labels for grouped data sets. View the development and the discussion.
JupyterLab Support
Dash-JupyterLab enables interactive development of Dash apps in JupyterLab.
Image Editing and Annotating
Dash Canvas is an interactive image editing component for image processing Dash apps.
Dash DAQ
Dash DAQ (Data Acquisition) is a set of components for monitoring and controlling machines, instruments, and factories. View the source or get started.
LOOKING AHEAD
Lots of really good stuff in here. As always, please take these features for a spin and let us know what you think.
Plotly Express
Plotly Express is our grammar-of-graphics-inspired charting interface. Simple syntax for complex charts. We’re excited to share this sneak preview.
Sunburst Charts
Sunburst charts extend plotly.js into the realm of hierarchical data. This development will make dash-sunburst an official chart type in dcc.Graph. Sunburst charts pave the way for treemaps & icicle charts. Check out an early version & join the discussion.
Dash for R
We’re writing an R interface for Dash. It’ll look and feel just like the existing Python interface and will use the same underlying JavaScript components. Try out the prototype.
MAINTENANCE NOTES
Version Pinning
pip install dash will now install dash-core-components, dash-renderer, and dash-html-components. So, upgrade everything with a simple pip install dash --upgrade.
Read the CHANGELOG
All of these changes can be viewed in each project’s “CHANGELOG.md” file. For example, see the changelogs in dash, dash-table, dash-core-components, or dash-html-components.
No more dcc.dependencies.Event
Event has been removed from Dash. It was removed from the user guide last year and replaced by event properties like n_clicks .
FOR OUR COMMERCIAL CUSTOMERS
Dash Deployment Server 3.0
DDS 3.0 includes simplified authentication and authorization, Kerberos support, and a themable portal for viewing apps. View the Dash Deployment Server User Guide (no login required).
Dash Design Kit
Building blocks & templates for enterprise Dash apps. Think headers, sidebars, cards, and themable templates. No CSS required . Learn more about Dash Design Kit.
Sponsored Development
Many thanks to all of our enterprise customers that stepped up to fund our work. We’re shipping features faster than ever and we couldn’t have done it without you. Using Dash at your company? Learn more about our commercial products.
FEATURED APPS
Working on something great? Share your app in the community forum or get in touch with us directly by responding to this email.
Microscopy Image Analysis at the Hammer Lab
This incredible app is part of Hammer Lab’s “Microscopy Image Cytometry Toolkit”. Check out a GIF and the code.
Assisting Scientists with CRISPR
This beautiful, explorable Dash app was recently featured in Nature. Discuss with the author in the community forum.
Perspective Interface
JP Morgan Chase open-sourced a fast pivot viz library called perspective. Now it has a Dash interface.
Log Ascii Standard (LAS) Oil & Gas Report
LAS is a standard file format in the oil & gas industry. LAS-to-Dash visualizes this data in an interactive Dash app. View the source.
REACH OUT & LEARN MORE
We love seeing what you’ve built with Dash. Lots of ways to get in touch or track our progress:
- We share product developments on Twitter @plotlygraphs and the Dash Community Forum.
- Using Dash inside your enterprise ? We can help. Check out our commercial products or contact sales.
- Interested in working at Plotly ? See available positions & check out our Montréal HQ.
- Reach out to me directly at chris@plot.ly or send me a direct message in this forum.
Have a great week –
Chris & Team Plotly