Comments (6)
I came here for the same idea. Plotting the quotient change/total or perhaps exp(change/total) would show the spread rate. This value could be plotted against time, either absolute or since "day 0".
Mathematics:
Assuming an exponential growth u(t) = C a^t, the derivative is u'(t) = (ln a) u(t), so u'(t)/u(t) = ln a.
from covidtrends.
The line is already showing a derivative so I'm not sure I could interpret what the second derivative would mean.
But on a similar vein, NYT has basically this graph divided by the x axis. See the last two chart at https://www.nytimes.com/interactive/2020/03/27/upshot/coronavirus-new-york-comparison.html
from covidtrends.
The last graph on the NYT article shared by @exclipy is super interesting. Might be worth looking into adding a view like that here. One of the issues with our log-log curve is that the slope doesn't convey the growth rate, instead the height of the curve does. (All exponential growth has the same slope on our log-log curve). So a separate view focusing on growth rate as suggested here makes sense to me.
from covidtrends.
Consider for example Sweden. Its path diverged slowly from the main highway, but then it returned to the exponential growth. In the second derivative picture, it would be shown only as a little, on the X axis bounded "dent" in otherwise constant function.
from covidtrends.
I think a value that would show a similar curve, with a more easily understood connection to the real world, is the percent of total cases which were new in the past week. It would still show exponential growth as a constant, and lend itself to calculations of the doubling rate.
from covidtrends.
@prestonraab. That's more or less the same thing.
from covidtrends.
Related Issues (20)
- selectAll should select all visible regions
- Rhode Island now not reporting data on Sat. & Sun.
- Suggestion: Add Hospitalizations as a Parameter
- Feature Request: Identify countries based on their growth rates.
- Data for Scotland
- Feature Request: per capita rates HOT 10
- Add breakdown per region for Russia
- Horizontal Gridlines are not Consistent across decades
- Reset the Count or provide it as an option. HOT 1
- Extend current work to capture R-effective which help model trends, causal anal HOT 1
- Mobile website
- Option for infection rate per 100K population? HOT 3
- Top 10/20 countries
- Data for Massachusetts displaying weird HOT 7
- Switch for absolte and per 1M oder 100.000 people HOT 2
- add average marker
- data coherence problem HOT 1
- Is this project still maintained? HOT 1
- Relative scale by population HOT 2
- Add vaccination stats
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from covidtrends.