Sunday, December 30, 2012

How to find out the traffic of a website

I'll just place the link with a good explanation of it from eHow

Example:

I did this for a website of a friend: questionity.com, and the value in dnScoop was about $68k while Google (just for the fun of the comparison) was more than $2B... Actually, it varies and when I clicked again (for Questionity) it was now $34k... I guess it depends on the stats at the time...

TrafficEstimate gives me about 340k visits on the last 30 days.

Alexa ranks it as the 1700 site in Spain, by traffic.

Saturday, December 15, 2012

Useful Matlab commands

These are some of the commands that I have used in Matlab pretty often. I just put them here for me to have a quick reference. Don't expect any fancy things... :)

t=(0:1/44e3:99999*1/44e3);
osc=sin(2*pi*t*3.9917e+003)';
mixer_out=filter_out.*osc;
bsdelayed=[zeros(25640-13170,1) ;bs];
bsshift=circshift(bs,22800);

figure
subplot(2,1,2)
plot(x,’r’)
clf
hold on
close all  % Closes all figures

filterbuilder
Y=Filter(Hbp,x);

z=amdemod(rx,3.9917e+003,44e3);
fmdemod;
pmdemod;
b=upsample(b,4400); % Insert zeros in between
bs=conv(b,symbol);
abs(fft(rx));

READ WAV FILE
[filename, pathname]=uigetfile('*.wav')
[m d]=wavfinfo(strcat(pathname,filename))
rx = wavread(strcat(pathname,filename));

READ BINARY FILE
[filename, pathname]=uigetfile('.\*.*')  % Open the dialog box
filen=strcat(pathname,filename) % Builds the full file path
fileID = fopen(filen)  % Opens the file and assigns it an ID
A = fread(fileID, inf, 'int16');   % Reads the full file into an Array A, assuming they are 16b integers
plot(A)

% See more http://www.mathworks.com/company/newsletters/articles/Matrix-Indexing-in-MATLAB/matrix.html
v = [16 5 9 4 2 11 7 14];
v(3) % gives 9
v([1 5 6]) % Gives 16, 2, 11
v(3:7) % Gives 9 4 2 11 7

http://www.mathworks.com/support/2014a/matlab/8.3/demos/working-with-arrays-matlab-video.html