First of all: your command if wrong. It should be constructed this way:
tesseract image output [options]
See tesseract --help for more details.
Next: error message is clear:
Error opening data file ./tessdata/Fraktur.traineddata
You (or your installation) instructed to look for trainneddata in current
director (./). Do you have it there?
Next tesseract gave you hint how you can fix the problem (" Please make
sure the TESSDATA_PREFIX..."). Did you use it?
Zdenko
2018-04-10 11:39 GMT+02:00 Firlefanz <firlefanze...@gmail.com>:
> I downloaded deu_frak.traineddata Fraktur.traineddata and frk.traineddata
> to usr/loca/share/tessdata. But when using
>
> $ tesseract file.tiff -l Fraktur Fraktur
>
> I get the error message
>
> Error opening data file ./tessdata/Fraktur.traineddata
> Please make sure the TESSDATA_PREFIX environment variable is set to the
> parent directory of your "tessdata" directory. Failed loading language
> 'Fraktur' Tesseract couldn't load any languages! Could not initialize
> tesseract.
>
>
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