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Avoid notebook's error while reading a text file in Raspberry Pi?

Posted 5 months ago
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I ported a working notebook from my computer to RPi where Mathematica was pre-installed. It starts nicely, but stops as it tries to read a simple text file. The very first lines are these:

$HomeDirectory
/home/pi
dict0 = ToString /@ ReadList["sv_JSPFirefoxRensadCRUTF-8.txt"]
ReadList::noopen: Cannot open sv_JSPFirefoxRensadCRUTF-8.txt.
$Failed

I have not changed anything, same text file etc. Any suggestions would be much appreciated. Thank you very much in advance.

2 Replies
Posted 4 months ago

The error message usually indicates that Mathematica cannot find the file you ask it to read. ReadList will import from the directory specified by Directory[] not $HomeDirectory.

In[6]:= $HomeDirectory

Directory[]

Out[6]= "C:\Users\epark"

Out[7]= "C:\Users\epark\Documents"

If the file is in the wrong spot, then ReadList will not be able to find it. You can set the working directory by SetDirectory. For example, SetDirectory[NotebookDirectory[]] will set the directory of the current evaluation notebook as the working directory.

Thank you, Eun! So my solution was to write

SetDirectory[NotebookDirectory[]]

Assuming that the files are in the same folder (directory) as the notebook itself. It all works nicely.

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