大约有 46,000 项符合查询结果（耗时：0.0426秒） [XML]
Difference between map, applymap and apply methods in Pandas
...
10 Answers
10
Active
...
Is this a “good enough” random algorithm; why isn't it used if it's faster?
... QuickRandom qr = new QuickRandom();
int[] frequencies = new int[10];
for (int i = 0; i < 100000; i++) {
frequencies[(int) (qr.random() * 10)]++;
}
printDistribution("QR", frequencies);
frequencies = new int[10];
for (int i = 0; i <...
What is in your Mathematica tool bag? [closed]
... processing.
As an example of its utility, I've been working with Wannier90 which outputs the spatially dependent Hamiltonian into a file where each line is a different element in the matrix, as follows
rx ry rz i j Re[Hij] Im[Hij]
To turn that list into a set of matrices, I gathered up all subl...
How to slice an array in Bash
...
answered Aug 26 '09 at 17:10
Paused until further notice.Paused until further notice.
286k8181 gold badges340340 silver badges409409 bronze badges
...
Circle drawing with SVG's arc path
...
answered Apr 21 '11 at 0:41
Todd MainTodd Main
31k1010 gold badges7373 silver badges137137 bronze badges
...
How do you detect where two line segments intersect? [closed]
...th s, getting
(p + t r) × s = (q + u s) × s
And since s × s = 0, this means
t (r × s) = (q − p) × s
And therefore, solving for t:
t = (q − p) × s / (r × s)
In the same way, we can solve for u:
(p + t r) × r = (q + u s) × r
u (s × r) = (p − q) × r
...
Can I set background image and opacity in the same property?
...
Two methods:
Convert to PNG and make the original image 0.2 opacity
(Better method) have a <div> that is position: absolute; before #main and the same height as #main, then apply the background-image and opacity: 0.2; filter: alpha(opacity=20);.
...
HTML5 Canvas Resize (Downscale) Image High Quality?
...
+100
Since your problem is to downscale your image, there is no point in talking about interpolation -which is about creating pixel-. The ...
Reverse colormap in matplotlib
...
answered Jul 19 '10 at 11:45
ptomatoptomato
49.3k1111 gold badges9898 silver badges146146 bronze badges
...
Easy pretty printing of floats in python?
...
102
As noone has added it, it should be noted that going forward from Python 2.6+ the recommended w...