React Plotly Examples

Dash instructional courses from Plotly usually cost more than $1000, but now you can get the bootcamp experience for a fraction of that price in this self-paced course that includes example code, explanatory videos, student support in our chat channels, Question and Answer Forums, and interactive exercises. For a more serious example, we could leverage another React component, named react-data-grid, to display the data within a plotly scatterplot brush, as done in Figure 22. The caveat is that the conventional way to use Vega seems to be to let it mutate the DOM. In particular, it will accept the following props:. js charts are shipped with zoom, pan, hover, and click interactions. React-based drag'n'drop pivot table with Plotly. Before action buttons existed in Shiny, there were only submit buttons. Since 4 has four children each with weight of 1 (outflow = 1 + 1 + 1 + 1 = 4),. This module's entry point is a React component called which connects an instance of to a plotly. NVD3 for VueJS (careful, it seems unmaintained) Plotly. We've provided some basic React components in PyxleyJS that will handle most of the interaction between UI elements. js and React are more ideal to that end. The fact that you used setTimeout is not an obstacle for me. Chartist does not freak out if you have holes in your data. View Yingyou L. 11 pip install dash==0. It is not minified, but we don't want it to be minified here. js' This sets up Chartkick with Chart. Here's a simple example of a Dash App that ties a Dropdown to a D3. js and rendered with Shiny. js, React and Flask, Dash ties modern UI elements like dropdowns, sliders, and graphs directly to your analytical python code. Because of its broader scope and lower level API, D3 has a steeper learning curve compared to other charting libraries. js, React and Flask, Dash ties modern UI elements like dropdowns, sliders, and graphs directly to your analytical Python code. react-pivottable is part of Plotly's React Component Suite for building data visualization Web apps and products. Built to support new HTML5 elements and syntax with progressively enhanced components. Render scenes. If xaxis is an array of `Date` items, Plotly will automatically parse it into a timeseries chart. Make sure to drop your feedback below, and code for this can be found on my Github. Dash apps consist of a Flask server that communicates with front-end React components using JSON packets over HTTP requests. py3-none-any. You can find all your access tokens, create new ones, or delete existing ones on your Access tokens pag. What does it do & where is the demo? react-pivottable's function is to enable data exploration and analysis by summarizing a data set into table or Plotly. You can easily create reuseable chart components. Python code | Link to plot Speaking of tornado-like rotations, here is an example of a cone plot of a vortex. js, and React. You have to add hidden div with intermediate data (as suggested by plotly). The idea behind plotly. Unsourced material may be challenged and removed. More than 1 year has passed since last update. Cells scroll up with navigation push animation ; Plotly animated slider in Python ; R Plotly animation-initial frame. For two years we have been building most of our applications with React. This app working with Android and iOS. js and a CSS theme of your choice, and you get a beautiful progress indicator for your page load and ajax navigation. As Boris Johnson makes a dash to Luxembourg today for negotiations with Juncker on Brexit, this Sankey diagram from a blog post ‘Brexit Negotiation Outcomes using a Sankey Diagram’ by Sean Danaher at Progressive Pulse – less than a year old (Nov 9, 2018) – is soooo outdated. Python for data science (my answer to this question being just pick one and learn it well), but over time I have found that there are actually some. As indicated on the landing page which I link to, it's built on top of Plotly. For example, say you have the following files in your project:. js React component. How To Add Furniture In Revit 2018. In this tutorial, we introduce the reader to Dash fundamentals and assume that they have prior experience with Plotly. Sign in Sign up Instantly share code, notes, and. js, and React. VS Code is lightweight and should run on most available hardware and platform versions. js example webpage! For the R part, we made R return a list of x, y coordinates. color etc) has changed, or if layout. Eas y Inter activ e D ata Applications with D ash Matteo Guzzo EuroPython 2018, Edinburgh. You can find a lot of examples on the Plotly documentation to get started with. See more examples. git clone [this repo] cd react-chart-editor cd examples/demo npm install npm start See more examples here. Create interactive D3. Let's start. js is the perfect front-end complement to Flask. Highstock with Navigator Plot Bands. react-pivottable. That's because ref is not a prop. Plotly examples. visNetwork. js is quite simple. View Yingyou L. An introduction to Altair provides another wonderful tutorial on this data visualization tool. color etc) has changed, or if layout. I include Matplotlib versions in many cases for. Cells scroll up with navigation push animation ; Plotly animated slider in Python ; R Plotly animation-initial frame. This article needs additional citations for verification. , for example 18. Circle progress indicator. Numerical Python in. As indicated on the landing page which I link to, it's built on top of Plotly. Adding a uirevision attribute and then keeping it the same during the next call to Plotly. js-powered component care of react-plotly. English (en) 日本語 (ja) 한국어 (ko) Français (fr) Deutsch (de) Italiano (it) русский (ru). GitHub Gist: instantly share code, notes, and snippets. Leaflet supports even more customizable markers using the awesome markers leaflet plugin. Fork the JSFiddle example and you should be good to go. You can render a table widget in shiny, and obtain some information about its current state, such as the indices of the rows on the current page. Today I'll share with you an example of how you can use Plotly to visualize real-time data in your browser. 0 - Add new trace type: treemap 0. react will only refresh the data being plotted if the identity of the data arrays (e. js library using add_js_library and an extra container using add_div. ,下载react-plotlyjs的源码. The rate of a reaction is defined as the ratio of the change in concentration of a product to the change in time: rate of reaction=change in concentration / change in time Three major factors will affect the rate of the reaction: temperature, concentration, and catalysts. Plotly in R: format axis - tick labels to percentage (R) - Codedump. Dash leverages the power of Flask and React, putting them to work for Python data scientists who may not be expert Web programmers. react-plotlyjs and react-plotly If anybody can successfully get react-plotly or react-plotlyjs to work (with data updates) on react please let me know, I have been stuck for over a day I had no issue gets chartjs to work, but they don't have a polar scatter plot. react method) that determines the minimal update path needed. This is a "dumb" component that doesn't merge its internal state with any updates. Examples¶ This page provides a list of examples. The source of the data is Alpha Vantage. js offers a lot of features that make learning about the library worth the effort. Nowadays, many free and open source interactive big data visualization tools can allow you perform data analysis to discover patterns and trends. What does it do & where is the demo?. You can limit what gets re-run during a reaction with reactive expressions. This page was generated by GitHub Pages using the Cayman theme by Jason Long. Yesterday we released Plotly. Vega is a visualization grammar, a declarative format for creating, saving, and sharing interactive visualization designs. Built-in functions are usually a part of Python packages and libraries, whereas. React Native will detect when a file has a. Plotly for R is based on the open source library plotly. There are multiple possible ways to create coroutines based on different requirements. To see what it can do and how, browse the examples below or check out the documentation wiki for full details. View Carlone Scott’s profile on LinkedIn, the world's largest professional community. You have to add hidden div with intermediate data (as suggested by plotly). js-powered component care of react-plotly. HTML preprocessors can make writing HTML more powerful or convenient. Feel free to add more. We are going to add this JSX script to our hello. However if you are looking for something lightweight to add reusable components to an existing application Vue. JSFiddle or its authors are not responsible or liable for any loss or damage of any kind during the usage of provided code. Graph data visualization with vis. You can find a lot of examples on the Plotly documentation to get started with. I was stuck because I am naive at React and I could not understand why the react-plotly code and react-plotlyjs code was not working for me. 3D scatterplots and globes. This plot was made using ggplot2's time scale. It is more lightweight than Angular, but lacks the built-in features listed above. IntelliJ IDEA comes with a collection of more than 50 code snippets that expand into different statements and blocks of code often used in React apps. 13 Different Pickers - Sketch Import a color picker from react-color at the top of a component and then use it in the render function: 1. It’s particularly suited for anyone who works with data in Python. git clone [this repo] cd react-plotly. There is one caveat to the above example: refs will not get passed through. Eas y Inter activ e D ata Applications with D ash Matteo Guzzo EuroPython 2018, Edinburgh. js包装器的问题:react-plotlyjs和react-plotly如果任何人能够成功地得到反应 - 或者反应 - 积极地工作(有数据更新),请让我知道,我已经被困了一天我没有问题得到chartjs工作,但他们没有极地散点图. If xaxis is an array of `Date` items, Plotly will automatically parse it into a timeseries chart. js code is stored on the device, so it will work offline. Issue with plotly. I can draw the lines using shapes, but don’t know how to move them using the mouse. ,下載react-plotlyjs的源碼. This article looks at the creation of line and bar charts using the D3. plotly as pl import plotly. Learn to create interactive charts and dashboards with Python and Plotly. For example, you might be studying leg strength of people according to weight. PropTypes has moved into a different package since React v15. Dash is a Python framework for building analytical web applications. NVD3 for React. js, React, and Flask, Dash ties modern UI elements like dropdowns, sliders and graphs directly to your analytical python code. Fork the JSFiddle example and you should be good to go. Unlike other front-end toolkits, Bootstrap was designed first and foremost as a styleguide to document not only its features, but best practices and living, coded examples. A web developer provides a tutorial on how to create a CRUD application using the ASP. It is a React port of the jQuery-based PivotTable. That takes the plotly 'camera' button (normally saves plot as png), names it 'Snapshot', and re-directs its click event to pop up an alert that says 'new button!'. IntelliJ IDEA comes with a collection of more than 50 code snippets that expand into different statements and blocks of code often used in React apps. This example plots changes in Google's stock price, with marker sizes reflecting the trading volume and colors varying with time. js chart with a true 2-d drag'n'drop UI, very similar to the one found in older versions of Microsoft Excel. Library includes several good looking themes and 30 chart types that run across devices including iPhone, iPad, Android, Mac & PCs. Examples ¶ This collection of examples demonstrate interesting uses of HoloViews that go beyond the tutorial material. In this section, let’s take a look at a few of them. js library using add_js_library and an extra container using add_div. js is a JavaScript library for manipulating documents based on data. Furthermore, when called, Plotly. js有一个自由的极地散点图. For example, 'Direction','reverse' reverses the color scale. Open-source interfaces to Plotly. I can't get them to render properly when the page is first loaded. Here is how it looks like: Subscribe to What I Made Today. js, React and Flask, Dash ties modern UI elements like dropdowns, sliders, and graphs directly to your analytical python code. An attempt to present a simple example of each chart type. io This is an example. js is technically a library (not a framework) that is built and maintained by Facebook. js in plotly. For a more serious example, we could leverage another React component, named react-data-grid, to display the data within a plotly scatterplot brush, as done in Figure 22. ly) App Samples. js distributed bundle. An introduction to Altair provides another wonderful tutorial on this data visualization tool. He works on cases in a wide variety of environments including R, Python, Matlab, and Javascript. It integrates with ggplot2, which we also learned in this chapter, and can be implemented in a number of programming languages as well, including Scala, Python, and Node. The Nivo documentation site allows you to easily customize attributes from the UI. About this example. Hope this gave you a good introduction to Plotly js. js for React. A StratoDem data selection modal with a Plotly. In this example we are going to build a graph that shows life expectancy in comparison to GDP per capita based in all countries around the World. Being written on top of Flask, Plotly. We provide a codemod script to automate the conversion. By default, the modebar appears in the top right-hand side of a plotly graph on mouse hover, and can lead to poor user-experience on small displays. Examples of used technologies: JavaScript, React, ReactNative, Node. ’s profile on LinkedIn, the world's largest professional community. Interactive Embedded Plots with Plotly and ggplot2. html code below for the Iframe Code field. A collection of R code snippets with explanations. You can render a table widget in shiny, and obtain some information about its current state, such as the indices of the rows on the current page. LetterFreq! Plot the distribution of English letter frequencies of input text, and optionally show a reference distribution. Issue with plotly. Give it a try. The idea behind plotly. Functions are common to all programming languages, and it can be defined as a block of re-usable code to perform specific tasks. You need a Mapbox access token to use any of Mapbox's tools, APIs, or SDKs. Description Welcome to Python Visualization Dashboards with Plotly’s Dash Library! This course will teach your everything you need to know to use Python to create interactive dashboard’s with Plotly’s new Dash library!. react-pivottable. I believe it's the default shell for Debian and Ubuntu (I'm a Fedora/CentOS user myself). If you are planning to create custom visualizations on the web, chances are that you. ggplot is always a fun subject for discussion among folks who build visualizations in R. Plotly is an R package designed to allow you to create interactive plots online. This component is used by all visual components. css - default styles. js is a Javascript Pivot Table and Pivot Chart library with drag’n’drop interactivity, and it can now be used with Jupyter/IPython Notebook via the pivottablejs module. But I can't see how to call plotly_buttonclicked. PlotlyRenderer | ParaViewWeb English. Final Thoughts. The example below shows how you can use the rcjc abbreviation to create a class that defines a new React component:. Dash is written on Flask, Plotly. pyやDashもそのデザイン性や使い勝手から、最近. ’s profile on LinkedIn, the world's largest professional community. pubnub-plotly. Yesterday we released Plotly. You can limit what gets re-run during a reaction with reactive expressions. js charts are shipped with zoom, pan, hover, and click interactions. This app was written in just 43 lines of code (view the source). It is particularly suited for anyone who works with data in Python. What does it do & where is the demo? react-pivottable 's function is to enable data exploration and analysis by summarizing a data set into table or Plotly. datarevision has changed. When it comes to these maps, Plotly's point of difference comes in its ability to hover-over and interact with specific data points on the fly, instead of looking at a legend and 'ballparking' a value. In the latter case you can import the widget using e. A simple Spark Core and Plotly sample. react-plotlyjs and react-plotly If anybody can successfully get react-plotly or react-plotlyjs to work (with data updates) on react please let me know, I have been stuck for over a day I had no issue gets chartjs to work, but they don't have a polar scatter plot. Plotly seems to have grown leaps and bounds from when I last tried it year or so ago. As for the content, React supplies a special 'children' prop, which will contain the content entered between a component's opening and closing tags. express/ Installation. js, Unity3d. js to build custom data visualization apps. 26 Control the modebar. Description Welcome to Python Visualization Dashboards with Plotly’s Dash Library! This course will teach your everything you need to know to use Python to create interactive dashboard’s with Plotly’s new Dash library!. 0 - Add new trace type: treemap 0. js community edition * A dynamic, browser based visualization library. R interface to Highcharts. Some of you might be tempted to think: the more options and provided graphs the better. As you are searching for the best open source data visualization software tools, you know many of them go far beyond dashboard platforms and libraries for creating a graph or charts. Plot Our Sankey to Find a Problem. js and support loading from CDN; Assume date x-axis when 'auto' and the mapping has 'time' Support Fixed-Ratio Axes; Tested with Grafana 6; v0. The Loading component will come into play later on. Flot Examples. This module's entry point is a React component called which connects an instance of to a plotly. py3 Upload date Oct 18, 2019 Hashes View hashes: Filename, size plotly-4. You can easily create reuseable chart components. At the beginning we just used Leaflet inside a React component. javascript) submitted 2 years ago by EdridgeD Hi, not sure if this is the right sub, but /r/plotly seems inactive. Dash components are Python classes that encode the properties and values of a specific React component and that serialize as JSON. The Plotly API uses REST calls to create acounts, select plotting and styling, select different chart types, and other calls. $(function { Papa. That's because ref is not a prop. A set of basic examples can serve as an introduction to the language. Note that react, react-dom must be specified as peer dependencies in order to avoid version conflicts. Conclusion. If you treat each xaxis item as a category, then everything will work fine. The plot shows all of the words the occur between 90 and 100 times in the entire King James Bible. Let's look at a simple Component to get our feet wet. More complex examples of how I used Plotly charts can be found in the series below and its related posts. js, Dash is ideal for building data visualization apps with highly custom user interfaces in pure Python. Dash leverages the power of Flask and React, putting them to work for Python data scientists who may not be expert Web programmers. These can make it easy to display pandas dataframes, important metrics, or plots that update based on user interaction. As Boris Johnson makes a dash to Luxembourg today for negotiations with Juncker on Brexit, this Sankey diagram from a blog post ‘Brexit Negotiation Outcomes using a Sankey Diagram’ by Sean Danaher at Progressive Pulse – less than a year old (Nov 9, 2018) – is soooo outdated. Plotly is a collaborative data analysis and graphing tool. But I can't see how to call plotly_buttonclicked. As your app grows, you can catch a lot of bugs with typechecking. English (en) 日本語 (ja) 한국어 (ko) Français (fr) Deutsch (de) Italiano (it) русский (ru). js by the same author. 我遇到了两个不同的Plotly. js-powered component care of react-plotly. react` calls that are unaware of these interactions. The addAwesomeMarkers() function is similar to addMarkers() function but additionally allows you to specify custom colors for the markers as well as icons from the Font Awesome, Bootstrap Glyphicons, and Ion icons icon libraries. js chart with a true 2-d drag'n'drop UI, very similar to the one found in older versions of Microsoft Excel. It also has a fast growing community, and an impressive list of examples you can learn from. For this, we’ll use actionButton. products ️ 👩‍💻 6 new remote jobs for front end developers events A Guide to Professional Networking for Developers (free online meetup) collabs Cast-Bucket forhire Available – Frontend Developer – Remote forhire Available For Hire - Remote Freelance Developer forhire In Search of Opportunities Europe area products Juniper City Simple Event Creation and Sharing jobs X-Team is. Vega - A Visualization Grammar. Plotly Express. To see what it can do and how, browse the examples below or check out the documentation wiki for full details. Notice: this only makes the variable itself immutable, not its assigned content (for instance, in case the content is an object, this means the object itself can still be altered). js heatmap is a combination of three arrays: a 1-d x-axis array, a 1-d y-axis array, and a 2-d z array. js to embed D3 charts in your React-powered web application. js, Unity3d. Create a progress indicator. react-pivottable. Then why not choose Plotly for all the projects since it offers the largest diversity of charts? This is not the right approach. js library, this release includes an exciting new R-specific feature — the ability to modify (i. We will also set components for each route. Besides Dash, we are using Pandas for extract and manipulate data and Plotly to render the output into a Graph. Bootply is a web-based editor that you can use to design, test, debug and prototype Bootstrap. js it provides an easy to use stock market API that can fetch _live_ stock data (refreshed every minute). The example below shows how you can use the rcjc abbreviation to create a class that defines a new React component:. Before action buttons existed in Shiny, there were only submit buttons. js, React and Flask, Dash ties modern UI elements like dropdowns, sliders, and graphs directly to your analytical Python code. git clone [this repo] cd react-chart-editor cd examples/demo npm install npm start See more examples here. The third argument that's passed when the Custom Component is created, updateModel, is the key to passing data from your Custom Component to the rest of your app. One neat little innovation I came up with for this demo was the two different shades of grey to indicate not only that some data is being filtered out but a partial explanation of. Nivo and React-Vis both use Storybook for UI demonstrations of their various examples, which can dramatically shortcut the time to build a chart. Just curious if anyone has ran into any serious issues for implementing a SPA using Plotly + react + redux? I have seen a the pokedex example stating Plotly was looking at using react + flux, and also the plotly issue he…. This app was written in just 43 lines of code (view the source). Dash apps are rendered in the web browser and also mobile-ready. x, y, marker. yarn add react-chartkick chart. Dash is an assemblage of Flask, Socketio, Jinja, Plotly and boiler plate CSS and JS for easily creating data visualization web-apps with your Python data analysis backend. We’ll define a UI that lets the user choose number of observations to generate from the normal distribution, and has an actionButton labeled “Go!”. An open source JavaScript graphing library that is built on top of d3. LetterFreq! Plot the distribution of English letter frequencies of input text, and optionally show a reference distribution. It built on top of Flask, Plotly. This requires the user to select a stock by entering a stock ticker, and then that user should be able to tweak the stock drivers and observe the impact of these changes on the company's valuation. Draw plotly. Dash instructional courses from Plotly usually cost more than $1000, but now you can get the bootcamp experience for a fraction of that price in this self-paced course that includes example code, explanatory videos, student support in our chat channels, Question and Answer Forums, and interactive exercises. Leaflet Quick Start Guide. Learn about 18+ JavaScript libraries for creating charts and graphs — from heavy-duty libraries like D3. See the complete profile on LinkedIn and discover Yingyou’s. A reactive expression is an R expression that uses widget input and returns a value. It has been a while since I personally have looked into data visualization in Python, being very familiar and comfortable with Matplotlib. Interactive graphics with D3. I will be using jsComplete's React Playground for the examples in this article. Making simple tweaks here showed steady improvements and got it from ~1 fps to ~33 fps. react-pivottable. The edge from 1 to 4 is not as big as the sum of the edges going out from 4. css - default styles. Progress component. DASH (Debian Alchemist SHell). js React component. NVD3 for AngularJS. git clone [this repo] cd react-chart-editor cd examples/demo npm install npm start See more examples here. js – JavaScript 3D library submit project. Create Interactive Charts Using Plotly. import { LineChart, PieChart } from 'react-chartkick' import 'chart. HTML preprocessors can make writing HTML more powerful or convenient. It is more lightweight than Angular, but lacks the built-in features listed above. Last month I gave a talk at PyMunich on how to create reactive dashboards with Plotly Dash. Sometimes I feel like such discussions just devolve into the same type of argument as R vs. Now we are mostly using React Leaflet which is a React wrapper for Leaflet. react-plotly-dnd-editor (latest: 0. Graphs and charts are used to simplify complex data and make it easy to read and understand. There are multiple possible ways to create coroutines based on different requirements. How easy is Dash to use? In around an hour and with <100 lines of code, I created a dashboard to display live streaming data for my Data Science Workflows using Docker Containers talk. That takes the plotly 'camera' button (normally saves plot as png), names it 'Snapshot', and re-directs its click event to pop up an alert that says 'new button!'. I have already written about Dash here, and the weekend before the presentation I managed to deploy another dashboard on Heroku. The site allows users to upload data, select chart types, analyze, forecast, and interpolate points, and create a publication ready product. Leading developer of interactive, open-source graphing libraries for science, engineering, and finance. Make sure to drop your feedback below, and code for this can be found on my Github. ggplot is always a fun subject for discussion among folks who build visualizations in R. Circle progress indicator. js Dashboard is a completely free and open-source admin dashboard template built with latest version of Vue JS and Bootstrap 4. Dash instructional courses from Plotly usually cost more than $1000, but now you can get the bootcamp experience for a fraction of that price in this self-paced course that includes example code, explanatory videos, student support in our chat channels, Question and Answer Forums, and interactive exercises. Parallel Coordinates (0. Functions are common to all programming languages, and it can be defined as a block of re-usable code to perform specific tasks. The fact-checkers, whose work is more and more important for those who prefer facts over lies, police the line between fact and falsehood on a day-to-day basis, and do a great job. Today, my small contribution is to pass along a very good overview that reflects on one of Trump’s favorite overarching falsehoods. Namely: Trump describes an America in which everything was going down the tubes under  Obama, which is why we needed Trump to make America great again. And he claims that this project has come to fruition, with America setting records for prosperity under his leadership and guidance. “Obama bad; Trump good” is pretty much his analysis in all areas and measurement of U.S. activity, especially economically. Even if this were true, it would reflect poorly on Trump’s character, but it has the added problem of being false, a big lie made up of many small ones. Personally, I don’t assume that all economic measurements directly reflect the leadership of whoever occupies the Oval Office, nor am I smart enough to figure out what causes what in the economy. But the idea that presidents get the credit or the blame for the economy during their tenure is a political fact of life. Trump, in his adorable, immodest mendacity, not only claims credit for everything good that happens in the economy, but tells people, literally and specifically, that they have to vote for him even if they hate him, because without his guidance, their 401(k) accounts “will go down the tubes.” That would be offensive even if it were true, but it is utterly false. The stock market has been on a 10-year run of steady gains that began in 2009, the year Barack Obama was inaugurated. But why would anyone care about that? It’s only an unarguable, stubborn fact. Still, speaking of facts, there are so many measurements and indicators of how the economy is doing, that those not committed to an honest investigation can find evidence for whatever they want to believe. Trump and his most committed followers want to believe that everything was terrible under Barack Obama and great under Trump. That’s baloney. Anyone who believes that believes something false. And a series of charts and graphs published Monday in the Washington Post and explained by Economics Correspondent Heather Long provides the data that tells the tale. The details are complicated. Click through to the link above and you’ll learn much. But the overview is pretty simply this: The U.S. economy had a major meltdown in the last year of the George W. Bush presidency. Again, I’m not smart enough to know how much of this was Bush’s “fault.” But he had been in office for six years when the trouble started. So, if it’s ever reasonable to hold a president accountable for the performance of the economy, the timeline is bad for Bush. GDP growth went negative. Job growth fell sharply and then went negative. Median household income shrank. The Dow Jones Industrial Average dropped by more than 5,000 points! U.S. manufacturing output plunged, as did average home values, as did average hourly wages, as did measures of consumer confidence and most other indicators of economic health. (Backup for that is contained in the Post piece I linked to above.) Barack Obama inherited that mess of falling numbers, which continued during his first year in office, 2009, as he put in place policies designed to turn it around. By 2010, Obama’s second year, pretty much all of the negative numbers had turned positive. By the time Obama was up for reelection in 2012, all of them were headed in the right direction, which is certainly among the reasons voters gave him a second term by a solid (not landslide) margin. Basically, all of those good numbers continued throughout the second Obama term. The U.S. GDP, probably the single best measure of how the economy is doing, grew by 2.9 percent in 2015, which was Obama’s seventh year in office and was the best GDP growth number since before the crash of the late Bush years. GDP growth slowed to 1.6 percent in 2016, which may have been among the indicators that supported Trump’s campaign-year argument that everything was going to hell and only he could fix it. During the first year of Trump, GDP growth grew to 2.4 percent, which is decent but not great and anyway, a reasonable person would acknowledge that — to the degree that economic performance is to the credit or blame of the president — the performance in the first year of a new president is a mixture of the old and new policies. In Trump’s second year, 2018, the GDP grew 2.9 percent, equaling Obama’s best year, and so far in 2019, the growth rate has fallen to 2.1 percent, a mediocre number and a decline for which Trump presumably accepts no responsibility and blames either Nancy Pelosi, Ilhan Omar or, if he can swing it, Barack Obama. I suppose it’s natural for a president to want to take credit for everything good that happens on his (or someday her) watch, but not the blame for anything bad. Trump is more blatant about this than most. If we judge by his bad but remarkably steady approval ratings (today, according to the average maintained by 538.com, it’s 41.9 approval/ 53.7 disapproval) the pretty-good economy is not winning him new supporters, nor is his constant exaggeration of his accomplishments costing him many old ones). I already offered it above, but the full Washington Post workup of these numbers, and commentary/explanation by economics correspondent Heather Long, are here. On a related matter, if you care about what used to be called fiscal conservatism, which is the belief that federal debt and deficit matter, here’s a New York Times analysis, based on Congressional Budget Office data, suggesting that the annual budget deficit (that’s the amount the government borrows every year reflecting that amount by which federal spending exceeds revenues) which fell steadily during the Obama years, from a peak of $1.4 trillion at the beginning of the Obama administration, to $585 billion in 2016 (Obama’s last year in office), will be back up to $960 billion this fiscal year, and back over $1 trillion in 2020. (Here’s the New York Times piece detailing those numbers.) Trump is currently floating various tax cuts for the rich and the poor that will presumably worsen those projections, if passed. As the Times piece reported: