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copied!<p>The solution achieved, finally, was like this:</p> <p>I did it with a jQuery statement and reusing the javascript code of <strong>Google Charts</strong>.</p> <p>First I added javascript and jQuery tags in the html file:</p> <pre><code><script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script> <script type='text/javascript' src='https://www.google.com/jsapi'></script> </code></pre> <p>Then I merged jquery code and javascript code that I had in one script:</p> <pre><code><script type='text/javascript'> // Needed this var so that I could use it in other places of the code var t; jQuery.get('http://url_to_my_rpi/file_to_download.txt',function(data){ console.log(data) t=data; },'text'); google.load('visualization', '1', {packages:['gauge']}); google.setOnLoadCallback(drawChart); function drawChart() { t=eval(t); var data = google.visualization.arrayToDataTable([ ['Label', 'Value'], ['Temp', t],]); // (... more javascript with Google Charts options, display parameters..) </script> </code></pre> <p>Finally, and even if it's not listed as the main question, be sure to enable *mod_headers* on your apache and add <em>Header set</em> to <em>apache2.conf</em> file (In my case: <em>/etc/apache2/apache2.conf</em>)</p> <p><strong>1) Enable the module:</strong></p> <p>a2enmod headers</p> <p><strong>2) Add the line on your configuration file</strong></p> <p>Header set Access-Control-Allow-Origin "*"</p> <p><strong>3) Restart apache 2</strong></p> <p><strong>4) In case the 3 steps above didn't work</strong>, follow the instrcutions by entering in <a href="http://harthur.wordpress.com/2009/10/15/configure-apache-to-accept-cross-site-xmlhttprequests-on-ubuntu/" rel="nofollow">this website</a> or reinstall apache2.</p>

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