Setting-Up and Running Toshi’s Blog Post Code to Analyze Tweets About Fake News

著者 Stuart McGarrity, March 9, 2017

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My colleague Toshi made a very interesting post on Loren’s blog recently about analyzing Twitter. Someone asked if he could give some instructions on how to set up and run his code as it is a bit involved. I thought I could help with a code-along style video going over the steps which include:

Downloading the blog post code and data
Downloading twitty from the File Exchange
Registering an application on Twitter (apps.twitter.com) to get authentication tokens for API Access
Configuring of twitty with the acquired authentication tokens
Downloading the AFINN data set text file

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Here is that string truncation utility function I used.

function strOut = truncStr(strIn,max,addDots)
% Truncate a char array strIn to a max number of characters and optionally add ellipses

if strlength(strIn) > max    
    strOut = extractBefore(strIn,max);
    if addDots
        strOut=strOut + '...';
    end
else
    strOut=strIn;
end

% Set back to char
if ischar(strIn)
    strOut=char(strOut);
end