Read one page from pdf

[antake]

Hello!

I need to read a pdf document page by page because it is very large.
Can you please help me with it?

Sorry for such a simple question, I'm new to magick and can't find any good sources about it.

[magick]

Just add [0] to your filename, that reads only the first page of a PDF document (.e.g page.pdf[0]).

[antake]

Thank you but it seems I don't understand something.

Code: Select all

    std::string documentPath = "doc.pdf[0]";
    MagickCore::ImageInfo *imageInfo = MagickCore::CloneImageInfo(0);
    documentPath.copy(imageInfo->filename, MaxTextExtent - 1);
    imageInfo->filename[documentPath.length()] = 0;

    MagickCore::ExceptionInfo exceptionInfo;
    MagickCore::GetExceptionInfo(&exceptionInfo);
    MagickCore::Image *imagesP =  MagickCore::ReadImage(imageInfo, &exceptionInfo);

This code does not work. What wrong am I doing?

[antake]

It works! Thank you very much!

[antake]

And one more question.
As it seems to me I can read a range of pages adding [0-10] to the filename. But how can I extract single pages from the Image?

[magick]

Append [0] to read the first page, or [1] to read the second, etc.

[randomstuff]

what if that doesn't work? i am getting "unable to read file" message when trying to access a specific page like that on my server:(

what imagemagick verrsion introduced this?


edit: it seems my php imagemagick wrapper doesn't want to read no pdf file, not just a specific page. it seems that gs is located in /usr/bin as it should, i don't know how to debug this

[Bonzo]

What command are you using?

[fmw42]

Please do not add onto an old post in the future. Please start a new topic. What is your IM version and platform? What is your exact command.

[randomstuff]

'i am sorry, i thought it would be better for google search results (i found this thread by googling my problem)

i am using php wrapper command

Code: Select all

$imagick = new Imagick();
$imagick->readImage('path_to_pdf/pdf.pdf');

[fmw42]

You won't get much proper help if you do not answer the questions asked above.

Try

Code: Select all

$imagick = new Imagick();
$imagick->readImage('path_to_pdf/pdf.pdf[0]');

To get the first page, use [1] to get the second page, etc.

[snibgo]

it seems my php imagemagick wrapper doesn't want to read no pdf file

The problem is probably that PHP can't find Ghostscript. See many threads on this. The fix is to edit delegates.xml to add the full path to Ghostscript.