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https://issues.apache.org/jira/browse/PDFBOX-2912?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Billow Gao updated PDFBOX-2912:
-------------------------------
    Description: 
It's possible that positionX is smaller than previous character's positionX.
Current PDFTextStripper will not add space and extract them to one word.
Added a patch to compare positionX < previous positionX case which can insert a 
space.

Disabled by default.

Tested with 10002 PDF files which had the negative positionX issue. The result 
was improved for all of them.
In my test, I set negativeStartXTolerance to 4

  was:
It's possible that positionX is smaller than previous character's positionX.
Current PDFTextStripper will not add space and extract them to one word.
Added a patch to compare positionX < previous positionX case which can insert a 
space.

Disabled by default.

Tested with 10002 PDF files which had the negative positionX issue. The result 
was improved for all of them.


> PDFTextStripper: positionX < previous positionX case
> ----------------------------------------------------
>
>                 Key: PDFBOX-2912
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-2912
>             Project: PDFBox
>          Issue Type: Improvement
>          Components: Text extraction
>    Affects Versions: 1.8.10
>            Reporter: Billow Gao
>         Attachments: negativeStartX.patch
>
>
> It's possible that positionX is smaller than previous character's positionX.
> Current PDFTextStripper will not add space and extract them to one word.
> Added a patch to compare positionX < previous positionX case which can insert 
> a space.
> Disabled by default.
> Tested with 10002 PDF files which had the negative positionX issue. The 
> result was improved for all of them.
> In my test, I set negativeStartXTolerance to 4



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