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When creating a custom plot I came across that Firefox's "Web Console" flagged an error with:

XML Parsing Error: not well-formed Location: http://192.168.1.201/testdata.dat Line Number 1, Column 5:

The html code and the content of testdata.dat are below.

Although it says error, the page actually works as expected, but I kind of wasn't satisfied and played around a bit. I found that if I rename testdata.dat to testdata.csv and adjust the html file accordingly, the error goes away.

Is this expected? Can someone shine a light on this?

dygraphs_test.html:

<!doctype html>
<html>
<head>
<meta charset="utf-8"/>
<script src="//cdnjs.cloudflare.com/ajax/libs/dygraph/2.1.0/dygraph.min.js"></script>
<link rel="stylesheet" src="//cdnjs.cloudflare.com/ajax/libs/dygraph/2.1.0/dygraph.min.css" />
</head>
<body>
    <h3>Test</h3>
<div id="graphdiv2"></div>
<script type="text/javascript">
  g2 = new Dygraph(
    document.getElementById("graphdiv2"),
    "testdata.dat",
    {
      labels: [ "Date", "Temperature", "Col3", "Col4", "Col5" ],
    } // options
  );
</script>
</body>
</html>

testdata.dat:

2018/01/12 17:59:04,22.18,22.34,28.44,20.31
2018/01/12 17:59:06,22.19,22.68,28.44,20.14
2018/01/12 17:59:08,22.18,22.32,28.44,20.31
2018/01/12 17:59:10,22.18,22.35,28.38,20.31
2018/01/12 17:59:12,22.18,22.37,28.38,20.31
2018/01/12 17:59:14,22.18,22.39,28.44,20.31
Improve this question
3
  • You have comma separated values (CSV), not an XML document, which puts data in a different syntax Commented Jan 14, 2018 at 0:45
  • Dygraphs does exactly the same in their front page example. On dygraphs.com they use "ny-vs-sf.txt" as the filename that holds the csv data. The syntax for dygraphs.com/data.html#url for the data source does not mention that the link is parsed according to the file ending, and nowhere does it say XML. Commented Jan 14, 2018 at 0:56
  • Looks like I can't re-vote to close, but this is a duplicate: stackoverflow.com/questions/42630246/… Commented Jan 14, 2018 at 1:17
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