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Possible to make labels appear when hovering over a point in matplotlib?
...b.pyplot as plt
import numpy as np; np.random.seed(1)
x = np.random.rand(15)
y = np.random.rand(15)
names = np.array(list("ABCDEFGHIJKLMNO"))
c = np.random.randint(1,5,size=15)
norm = plt.Normalize(1,4)
cmap = plt.cm.RdYlGn
fig,ax = plt.subplots()
sc = plt.scatter(x,y,c=c, s=100, cmap=cmap, norm=...
How to add leading zeros?
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575
The short version: use formatC or sprintf.
The longer version:
There are several functions...
How to convert a unix timestamp (seconds since epoch) to Ruby DateTime?
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365
DateTime.strptime can handle seconds since epoch. The number must be converted to a string:
req...
What is a good regular expression to match a URL? [duplicate]
... URL starts with HTTP/HTTPS:
https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)
If you do not require HTTP protocol:
[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)
To try this out see http://regexr.c...
What GRANT USAGE ON SCHEMA exactly do?
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edited May 3 '19 at 17:05
J_H
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answered Jun 27 '...
Correct way to find max in an Array in Swift
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Given:
let numbers = [1, 2, 3, 4, 5]
Swift 3:
numbers.min() // equals 1
numbers.max() // equals 5
Swift 2:
numbers.minElement() // equals 1
numbers.maxElement() // equals 5
sha...
Array Length in Java
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edited Apr 23 '18 at 5:17
Azeem
6,79344 gold badges1717 silver badges3232 bronze badges
answered Ja...
How to specify function types for void (not Void) methods in Java8?
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251
You are trying to use the wrong interface type. The type Function is not appropriate in this ca...
Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?
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145
The most likely cause of the speed improvement is that:
inserting a MOV shifts the subsequent ...
What is the meaning of the term arena in relation to memory?
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Kerrek SBKerrek SB
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