d3-time-format | Parse format times , inspired by strptime | Date Time Utils library
kandi X-RAY | d3-time-format Summary
kandi X-RAY | d3-time-format Summary
This module provides a JavaScript implementation of the venerable strptime and strftime functions from the C standard library, and can be used to parse or format dates in a variety of locale-specific representations. To format a date, create a formatter from a specifier (a string with the desired format directives, indicated by %); then pass a date to the formatter, which returns a string. For example, to convert the current date to a human-readable string:.
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- Create a parse function from a string .
- create a function string for formatters
- Attempt to parse a stringifier .
- converts a date into a date object
- converts date to UTC
- Format a timezone .
- Pads a given number on a given value
- Format the day year for a date .
- Format the full - year for a date
- Parses a period string
d3-time-format Key Features
d3-time-format Examples and Code Snippets
Community Discussions
Trending Discussions on d3-time-format
QUESTION
My React app recieves date in the following JSON-format:
...ANSWER
Answered 2021-Jul-18 at 17:57You are not returning the value from .then((data) => { data = tt(data)}). Return the new DateTime you are computing for the next then-able in the Promise chain.
If data is an array then you will need to map the data and call the tt utility function on each element object.
QUESTION
I have the following code:
...ANSWER
Answered 2021-Jul-08 at 15:27Imagine your dataset was instead over many years and you ran:
QUESTION
import altair as alt
import pandas as pd
from urllib import request
import json
# fetch & enable a Brazil format & timeFormat locales.
with request.urlopen('https://raw.githubusercontent.com/d3/d3-format/master/locale/pt-BR.json') as f:
pt_format = json.load(f)
with request.urlopen('https://raw.githubusercontent.com/d3/d3-time-format/master/locale/pt-BR.json') as f:
pt_time_format = json.load(f)
alt.renderers.set_embed_options(formatLocale=pt_format, timeFormatLocale=pt_time_format)
df = pd.DataFrame({
'date': pd.date_range('2020-01-01', freq='M', periods=6),
'revenue': [100000, 110000, 90000, 120000, 85000, 115000]
})
a = alt.Chart(df).mark_bar().encode(
y='month(date):O',
x=alt.X('revenue:Q', axis=alt.Axis(format='$,.0f'))
)
a.save('tst.html')
ANSWER
Answered 2021-May-13 at 16:31alt.renderers settings only apply to charts being displayed by a renderer, e.g. in Jupyter Notebook: it does not affect charts being saved to HTML via chart.save().
In this case you can pass the embed options directly to the save() command:
QUESTION
I'm getting the following error when I ng serve (and I've already tried to clear cache, reinstall all modules and reboot the server)
ANSWER
Answered 2021-Apr-28 at 13:47Tried almost everything... finally I'm importing the source and it looks like it wants the project folder inside the root directory and not from a path outside it, so I copied the project folder from the module repository under the root of my app and pointed to it
QUESTION
I have a horizontal timeline where I plot events over time in D3.js:
Now, I would like to "fill" the gaps between the events, so calculating the width of each bar (similar as a Gantt chart). This is what I would like to achieve:
My logic was to have the position of the i+1 minus position, like this:
...ANSWER
Answered 2020-Nov-03 at 14:55The easiest way to get this is by just transforming your data a little bit beforehand. Note that if we have n events, we want to draw n - 1 bars.
QUESTION
I am trying to create a scatter plot based on two timestamps in d3, but i'm not sure the proper way to use the d3-time-format methods to properly parse the values in the timestamp format and build a range based on a 24-hour period. So far I built a function to loop through my array and use the d3 methods to convert the string to a d3-readable format, but I can seem to figure out how to format the output so it converts from date format to time format. My questions are does d3 accept time format? And how can I go about converting the date object to a time object? At the moment I have a y-axis that presents ticks for years.
Provided is my full code:
...ANSWER
Answered 2020-Aug-26 at 04:32To format the date, use d3.timeParse. This will parse any date string to a Date object. D3 can understand and work with time objects with timeScale.
I've renamed your original data to rawData. We also need to sort the data by the X axis:
QUESTION
Would anyone have a tip on how to parse data that comes thru like this?
...ANSWER
Answered 2020-Jul-21 at 20:17Using the d3 format docs as a reference, you need to build a specifier that exactly matches your data (or you will get "null" 100% of the time).
You'll notice in the docs that %S refers to a 2-digit decimal number of seconds - Uh oh, we have seconds and then six decimals (microseconds) in the data.
So, instead of just %S, we want %S followed by the decimal point followed by the %f directive which is 6 digits of microseconds.
The "T" in between the date and time portions is just part of the date format, UTC and ISO-8601 (and others probably) use a T in that position. The output of the snippet shows the date in UTC format with the T.
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