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How to do exponential and logarithmic curve fitting in Python? I found only polynomial fitting
...s the %timeit magic from which In [27]: %timeit ylist=[exp(i) for i in x] 10000 loops, best of 3: 172 us per loop In [28]: %timeit yarr=exp(x) 100000 loops, best of 3: 2.85 us per loop
– esmit
Apr 4 '14 at 16:33
...
Can dplyr package be used for conditional mutating?
...x) sample(7, 1e7, TRUE)))
setnames(DT, letters[1:6])
# > dim(DT)
# [1] 10000000 6
DF <- as.data.frame(DT)
DT_fun <- function(DT) {
DT[(a %in% c(0,1,3,4) | c == 4), g := 3L]
DT[a %in% c(2,5,7) | (a==1 & b==4), g := 2L]
}
DPLYR_fun <- function(DF) {
mutate(DF, g =...
Best approach to real time http streaming to HTML5 video client
...min user-pw=123456 ! rtph264depay ! avdec_h264 ! vp8enc threads=2 deadline=10000 ! webmmux streamable=true ! shout2send password=pass ip=<IP_OF_ICECAST_SERVER> port=12000 mount=cam.webm
=> You can then use the <video> tag with the URL of the icecast-stream (http://127.0.0.1:12000/c...
Is it possible to specify your own distance function using scikit-learn K-Means Clustering?
...in__":
import random
import sys
from time import time
N = 10000
dim = 10
ncluster = 10
kmsample = 100 # 0: random centres, > 0: kmeanssample
kmdelta = .001
kmiter = 10
metric = "cityblock" # "chebyshev" = max, "cityblock" L1, Lqmetric
seed = 1
...
What happens if you static_cast invalid value to enum class?
...fined behaviour".
Hence, prior to CWG 1766, even static_cast<Color>(10000) would not invoke UB; but after CWG 1766, it does invoke UB.
Now, the switch statement:
[stmt.switch]/2
The condition shall be of integral type, enumeration type, or class type. [...] Integral promotions are per...
Representing and solving a maze given an image
...the one posted by Joseph Kern). The animations show a new frame each after 10000 iterations of the main while-loop.
Breadth-First Search:
A-Star Manhattan Distance:
A-Star Squared Euclidean Distance:
A-Star Manhattan Distance multiplied by four:
The results show that the explored region...
Split List into Sublists with LINQ
...ng:
foreach (var item in Enumerable.Range(1, int.MaxValue).Chunk(8).Skip(100000).First())
{
Console.WriteLine(item);
}
// wait forever
To overcome this we can try Cameron's approach, which passes the above test in flying colors as it only walks the enumeration once.
Trouble is that it has ...
Sending files using POST with HttpURLConnection
...nn = (HttpURLConnection) url.openConnection();
conn.setReadTimeout(10000);
conn.setConnectTimeout(15000);
conn.setRequestMethod("POST");
conn.setUseCaches(false);
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setRequestProperty("Connecti...
source of historical stock data [closed]
...es.csv");
File.Delete("quotes.csv");
Thread.Sleep(10000); // 10 seconds
}
}
catch (Exception exc)
{
Console.WriteLine(exc.ToString());
Console.ReadKey();
}
}
Database:
On the database side I use an OleDb connection to the CSV file to...
Which characters make a URL invalid?
...ing unicode character ranges:
%xA0-D7FF / %xF900-FDCF / %xFDF0-FFEF
/ %x10000-1FFFD / %x20000-2FFFD / %x30000-3FFFD
/ %x40000-4FFFD / %x50000-5FFFD / %x60000-6FFFD
/ %x70000-7FFFD / %x80000-8FFFD / %x90000-9FFFD
/ %xA0000-AFFFD / %xB0000-BFFFD / %xC0000-CFFFD
/ %xD0000-DFFFD / %xE1000-EFFFD
The...