Answer My Searches

Build yourself a hyperlink out of some webpage with this URL http://soft-use.com/inst.html? followed by the code for the bookmarklet.

Here’s an example of how the begining of the new URL would look:
http://soft-use.com/inst.html?javascript:location.href=...

Click the link on from you iPhone, bookmark the resulting page, and then edit the URL in the new bookmark to erase everything before the “javascript:”.

This page has some handy, ready-to-bookmark bookmarklets for your iPhone.

Here’s my first shot at implementing the 2D discrete cosine transform in Python. It seems to work, but let me know in the comments if it’s wrong, or if you know of any easy ways to speed it up.

import numpy
#shortcuts
from numpy import pi
from math import cos,sqrt

def two_dim_DCT(X):
    """2D Discrete Cosine Transform
    X should be square 2 dimensional array
    Trying to follow:

http://en.wikipedia.org/wiki/Discrete_cosine_transform#Multidimensional_DCTs

    http://en.wikipedia.org/wiki/JPEG#Discrete_cosine_transform"""
    result=numpy.zeros(X.shape)
    N1,N2=X.shape
    def alpha(n):
        """Normalizing function, not sure if necessary"""
        if n==0:return 0.353553390593 #sqrt(1/8.)
        else:return .5 #sqrt(2/8.)
    for (k1,k2),_ in numpy.ndenumerate(X):
        sub_result=0.
        for n1 in range(N1):
            for n2 in range(N2):
                sub_result+=X[n1,n2] * cos((pi/N1)*(n1+.5)*k1)*cos((pi/N2)*(n2+.5)*k2)
        result[k1,k2]=alpha(k1)*alpha(k2)*sub_result
    return result

What is the official term for these guys?

The kind people at Reddit suggest either Wacky waving inflatable arm flailing tubeman or Air Dancers

In your Python session:

from PIL import Image
print Image.VERSION

These are links associated with recent searches I’ve done. They’re not difficult enough to warrant to their own posts but still super useful.

Tags: Businessidea, Clipboard, Copy, Editor, Encryption, Extension, Firefox, Forms, Gis, Gps, Greasemonkey, Html, Image, Javascript, Maps, Pdf, Pdfeditor, Privacy, Security, Speeding, Speedtraps, Spreadsheet, Steganography, Table, Utility