ERROR: exp0.box does not exist or is not readable

[Fanatico]

I'm trying to execute the training from the 4.o tutorial, but I'm getting an error, can someone help with this?

Platform: MAC OS X 10.13.3

Tesseract: 4.0.0-beta.1

leptonica: 1.75.3

libjpeg 9c : libpng 1.6.34 : libtiff 4.0.9 : zlib 1.2.11

Code used

../../tesseract/training/tesstrain.sh \

  --fonts_dir /Library/Fonts \

  --lang eng --linedata_only \

  --noextract_font_properties \

  --exposures "0"    \

  --langdata_dir ../../langdata \

  --tessdata_dir /usr/local/Cellar/tesseract/HEAD-f8e26ee/share/tessdata \

  --fontlist "Verdana" \

  --output_dir .~/tesstutorial/ara

Result

=== Starting training for language 'eng'

[Fri Apr 6 20:19:15 -03 2018] /usr/local/bin/text2image --fonts_dir=/Library/Fonts --font=Verdana --outputbase=/var/folders/xl/gqcd7ljn0k7d3r_3j9dy7x340000gn/T/font_tmp.XXXXXXXXXX.aU9oTb7N/sample_text.txt --text=/var/folders/xl/gqcd7ljn0k7d3r_3j9dy7x340000gn/T/font_tmp.XXXXXXXXXX.aU9oTb7N/sample_text.txt --fontconfig_tmpdir=/var/folders/xl/gqcd7ljn0k7d3r_3j9dy7x340000gn/T/font_tmp.XXXXXXXXXX.aU9oTb7N

=== Phase I: Generating training images ===

Rendering using Verdana

[Fri Apr 6 20:19:17 -03 2018] /usr/local/bin/text2image --fontconfig_tmpdir=/var/folders/xl/gqcd7ljn0k7d3r_3j9dy7x340000gn/T/font_tmp.XXXXXXXXXX.aU9oTb7N --fonts_dir=/Library/Fonts --strip_unrenderable_words --leading=32 --char_spacing=0.0 --exposure=0 --outputbase=/var/folders/xl/gqcd7ljn0k7d3r_3j9dy7x340000gn/T/tmp.OaBuo1g2/eng/eng.Verdana.exp0 --max_pages=3 --font=Verdana --text=../../langdata/eng/eng.training_text

ERROR: /var/folders/xl/gqcd7ljn0k7d3r_3j9dy7x340000gn/T/tmp.OaBuo1g2/eng/eng.Verdana.exp0.box does not exist or is not readable

ERROR: /var/folders/xl/gqcd7ljn0k7d3r_3j9dy7x340000gn/T/tmp.OaBuo1g2/eng/eng.Verdana.exp0.box does not exist or is not readable

Observations

I can find the fond if I use:

text2image --list_available_fonts --fonts_dir=/Library/Fonts

I tested some other fonts.

Thanks for the time and reply!

[ShreeDevi Kumar]

Is your langdata in   --langdata_dir ../../langdata

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[Fanatico]

Yes the location is correct,  I tried to put the full path to the folder and go the same error. 

Im just cloned the https://github.com/tesseract-ocr/langdata repo

[ShreeDevi Kumar]

Look in your tmp directory in the sub folders referred in the console output

Check the log file and other files there

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[Fanatico]

Thanks for the reply, but I just fixed this bug, the problem is that the var PANGOCAIRO_BACKEND was empty on MAC OSX so I needed to set it before executing the code. Something like this:

PANGOCAIRO_BACKEND=fc \

../../tesseract/training/tesstrain.sh \

  --fonts_dir /Library/Fonts \

  --lang eng --linedata_only \

  --noextract_font_properties \

  --exposures "0"    \

  --langdata_dir ../../langdata \

  --tessdata_dir /usr/local/Cellar/tesseract/HEAD-f8e26ee/share/tessdata \

  --fontlist "Verdana" \

  --output_dir .~/tesstutorial/eng

If someone need more details please look here: https://github.com/tesseract-ocr/tesseract/issues/736