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From: John Hewson <john@jahewson.com>
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Subject: Re: Reading text using TextPosition
Message-Id: <F87BB643-2488-42B3-8B62-E50534AE2BB0@jahewson.com>
Date: Wed, 22 Apr 2015 23:38:52 -0700
References: <1095BE96FDEC4E109388D9F32E0B3741@HeshamGneadyToshibaL850A848>
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To: "users@pdfbox.apache.org" <users@pdfbox.apache.org>


> On 21 Apr 2015, at 13:21, Hesham G. <heshamgneady@gmail.com> wrote:
>=20
> Frank ,
>=20
> Thanks for explaining this.=20
>=20
> What I am trying to do is reading sentences from the PDF using TextPositio=
n. Your explanation is clear and I can detect the new line using X & Y, but w=
hat if a sentence is written on 2 lines ? ... Reading the Y-coordinate for t=
he second line will result with dealing with it as a new sentence instead of=
 considering it a completion for the first line of the sentence.

Could you just take output of PDFToText as a text file and then run it throu=
gh an NLP sentence segmenter? Or is there some special case which you're try=
ing to handle?

> Best regards ,
> Hesham
>=20
> ------------------------------------------------------------------------
> Included message :
>=20
> Hi Hesham,
>=20
> There is no newline character in a PDF. Only printable characters are
> saved, each with its X and Y coordinates.
> If you sort the TextPositions by Y and X, you can detect 'newlines' by
> finding an increase in Y and a decrease in X. However, this isn't
> foolproof, since things like subscripts and superscripts are out of order
> when sorted by Y. Where there are multiple columns, this won't work.
>=20
> Frank
>=20
>=20
>> On Wed, Apr 22, 2015 at 7:33 AM, Hesham G. <heshamgneady@gmail.com> wrote=
:
>>=20
>> Hello ,
>>=20
>> When reading PDF text using TextPosition, is there a way to know if the
>> current character is a new line character ?
>>=20
>> protected void processTextPosition( TextPosition text )  {
>>    System.out.println( text.getCharacter() );  // Prints space if this is=

>> a new line character in the PDF file.
>> }
>>=20
>>=20
>> Best regards ,
>> Hesham

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