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What do the different readystates in XMLHttpRequest mean, and how can I use them?
...
The full list of readyState values is:
State Description
0 The request is not initialized
1 The request has been set up
2 The request has been sent
3 The request is in process
4 The request is complete
(from https://www.w3schools.com/js/js_ajax_http_respo...
Change column type from string to float in Pandas
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+200
You have four main options for converting types in pandas:
to_numeric() - provides functionality to safely convert non-numeric types...
How to deal with floating point number precision in JavaScript?
...st irritated that their programs don't work correctly with numbers like 1/10 without realizing that they wouldn't even blink at the same error if it occurred with 1/3.
If the first point really applies to you, use BigDecimal for JavaScript, which is not elegant at all, but actually solves the probl...
Javascript and regex: split string and keep the separator
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106
Use (positive) lookahead so that the regular expression asserts that the special character exis...
Why does one hot encoding improve machine learning performance?
...h" and "US". Assume, without loss of generality, that these are encoded as 0, 1 and 2. You then have a weight w for this feature in a linear classifier, which will make some kind of decision based on the constraint w×x + b > 0, or equivalently w×x < b.
The problem now is that the weight w c...
How to check sbt version?
... to jacek (in build file:/Users/jacek/)
[info] Setting: java.lang.String = 0.13.1
[info] Description:
[info] Provides the version of sbt. This setting should be not be modified.
[info] Provided by:
[info] */*:sbtVersion
[info] Defined at:
[info] (sbt.Defaults) Defaults.scala:68
[info] Delegates:...
Reduce left and right margins in matplotlib plot
...E.g.
import matplotlib.pyplot as plt
import numpy as np
data = np.arange(3000).reshape((100,30))
plt.imshow(data)
plt.savefig('test.png', bbox_inches='tight')
Another way is to use fig.tight_layout()
import matplotlib.pyplot as plt
import numpy as np
xs = np.linspace(0, 1, 20); ys = np.sin(xs)
...
Hadoop “Unable to load native-hadoop library for your platform” warning
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230
I assume you're running Hadoop on 64bit CentOS. The reason you saw that warning is the native Ha...
Plot yerr/xerr as shaded region rather than error bars
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from matplotlib import pyplot as plt
import numpy as np
x = np.linspace(0, 30, 30)
y = np.sin(x/6*np.pi)
error = np.random.normal(0.1, 0.02, size=y.shape)
y += np.random.normal(0, 0.1, size=y.shape)
plt.plot(x, y, 'k-')
plt.fill_between(x, y-error, y+error)
plt.show()
See also the matplotlib...
Maintain aspect ratio of div but fill screen width and height in CSS?
... breaking the ratio and without scrollbars!
(PURE) CSS
div
{
width: 100vw;
height: 56.25vw; /* height:width ratio = 9/16 = .5625 */
background: pink;
max-height: 100vh;
max-width: 177.78vh; /* 16/9 = 1.778 */
margin: auto;
position: absolute;
top:0;bottom:0; /* ve...