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Given a document how ignore the header and set the columns of a table?

See original GitHub issue

I am working with a PDF very similar to this document:

captura de pantalla 2017-01-17 a las 11 43 37 a m

As you can see the above document has a header, when I try to use tabula-py to extract it, I am getting everything merged in a single column:


df = read_pdf_table('file.pdf')


captura de pantalla 2017-01-17 a las 12 44 00 p m

Thus, my question is how can I ignore the header and get the content of the table?. I also tried with the options:


df = read_pdf_table('file.pdf', columns = ['Col1', 'Col2', 'Col3', 'Col4', 'Col5'])


CalledProcessError                        Traceback (most recent call last)
<ipython-input-4-33ed930c5d2a> in <module>()
      7 df = read_pdf_table('file.pdf',
----> 8                    columns = ['Col1', 'Col2', 'Col3', 'Col4', 'Col5']
         10 #df = read_pdf_table('/Users/user/Downloads/table.pdf')

/usr/local/lib/python3.5/site-packages/tabula/ in read_pdf_table(input_path, **kwargs)
     45     args = ["java", "-jar", jar_path] + options + [input_path]
---> 47     output = subprocess.check_output(args)
     49     if len(output) == 0:

/usr/local/Cellar/python3/3.5.2_2/Frameworks/Python.framework/Versions/3.5/lib/python3.5/ in check_output(timeout, *popenargs, **kwargs)
    625     return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
--> 626                **kwargs).stdout

/usr/local/Cellar/python3/3.5.2_2/Frameworks/Python.framework/Versions/3.5/lib/python3.5/ in run(input, timeout, check, *popenargs, **kwargs)
    706         if check and retcode:
    707             raise CalledProcessError(retcode, process.args,
--> 708                                      output=stdout, stderr=stderr)
    709     return CompletedProcess(process.args, retcode, stdout, stderr)

CalledProcessError: Command '['java', '-jar', '/usr/local/lib/python3.5/site-packages/tabula/tabula-0.9.1-jar-with-dependencies.jar', '--pages', '1', '--guess', '--columns', 

Nevertheless, it did not worked.

Issue Analytics

  • State:closed
  • Created 7 years ago
  • Comments:8 (3 by maintainers)

github_iconTop GitHub Comments

chezoucommented, Jan 18, 2017

In short, you can extract with area and spreadsheet option.

In [4]: tabula.read_pdf('./table.pdf', spreadsheet=True, area=(337.29, 226.49, 472.85, 384.91))
Picked up JAVA_TOOL_OPTIONS: -Dfile.encoding=UTF-8
  Unnamed: 0 Col2 Col3 Col4 Col5
0          A    B   12    R    G
1        NaN    R    T   23    H
2          B    B   33    R    A
3          C    T   99    E    M
4          D    I   12   34    M
5          E    I    I    W   90
6        NaN    1    2    W    h
7        NaN    4    3    E    H
8          F    E   E4    R    4

How to use area option

According to tabula-java wiki, there is a explain how to specify the area:

Using macOS’s preview, I got area information:


java -jar ./target/tabula-0.9.0-jar-with-dependencies.jar -p all -a $y1,$x1,$y2,$x2 -o $csvfile $filename


Note the left, top, height, and width parameters and calculate the following:

y1 = top
x1 = left
y2 = top + height
x2 = left + width

I confirmed with tabula-java:

java -jar ./tabula/tabula-0.9.1-jar-with-dependencies.jar -g -r -a "337.29,226.49,472.85,384.91" table.pdf

Without -r(same as --spreadsheet) option, it does not work properly.

sfinotticommented, Jan 2, 2020

@sfinotti Use columns instead if column. Note that columns option doesn’t work with lattice mode.

Just tried with “columns”, and got the error: ‘float’ object is not iterable Then, changing “col_def” from =(186.681) to =(186.681,), it worded out So, even if you have only ONE column delimiter, it’s necessary to ad a “,” at the end.

Thanks a lot !!!

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