rmagick

Unfortunately on my MAC I am unable to get the gem "rmagick" to install. I've tried pretty much a all the options. I had gotten it to install when I used "imagemagick 6.3.9.7". Therefore, I want to know is there a way to install a particular version of the software using brew ? Something like brew install imagemagick -v 6.3.9.7 Search for available versions with: brew search imagemagick To install a specific version use this forumla: brew install package@<version> , in your case it's: brew install imagemagick@6.3.9.7 来源： https://stackoverflow.com/questions/41800136/homebrew-install-package

Installing: ostaptan:~ ostap$ brew install imagemagick --disable-openmp --from-source ==> Downloading http://downloads.sf.net/project/machomebrew/mirror/ImageMagick-6.7.7-6.tar.bz2 Already downloaded: /Library/Caches/Homebrew/imagemagick-6.7.7-6.tar.bz2 ==> Patching patching file configure Hunk #1 succeeded at 32371 (offset 447 lines). ==> ./configure --disable-osx-universal-binary --without-perl --prefix=/usr/local/Cellar/imagemagick/6.7.7-6 --enable-shared --disable-static ==> make install Error: The linking step did not complete successfully The formula built, but is not symlinked into /usr

Possible Duplicate: ImageMagick / RMagick - Can't install RMagick 2.13.1. Can't find Magick-config I am getting the following error when I try to run my dev console (MAC OS X / Snow Leopard). Does anyone know the solution? /usr/local/bin/ruby extconf.rb checking for Ruby version >= 1.8.5... yes checking for gcc... yes checking for Magick-config... no Can't install RMagick 2.13.1. Can't find Magick-config in .:/usr/local/bin:/usr/local/sbin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin *** extconf.rb failed *** Could not create Makefile due to some reason, probably lack of necessary

I need to render some text (unicode, helvetica, white, 22px, bold) on a image (1024x768). This is my code so far: img = Magick::ImageList.new("my_bg_img.jpg") txt = Magick::Draw.new img.annotate(txt, 800, 600, 0, 0, "my super long text that needs to be auto line breaked and cropped") { txt.gravity = Magick::NorthGravity txt.pointsize = 22 txt.fill = "#ffffff" txt.font_family = 'helvetica' txt.font_weight = Magick::BoldWeight } img.format = "jpeg" return img.to_blob Its all fine but its not automatically breaking the lines (Word wrap) to fit all the text into my defined area ( 800x600 ). What

What's the difference between RMagic, ImageMagick, GD, etc. and which one should I use? I was looking for a thumbnail generation script and noticed that every script I found uses a different library for the same thing. Imagemagick, GD, DevIL, and GraphicsMagick are libraries used to create and edit image files. RMagick is a ruby wrapper around ImageMagick/GraphicsMagick. You may find other wrappers I've had luck installing and configuring GraphicsMagick (similar to ImageMagick) and using RMagick on my Mac. Are you doing batch processing? What about logical resizing (fixed X Y, max X Y, percent

We have a Ruby on Rails application that needs to convert a PDF into a PNG with a transparent background. We're using rmagick 2.13.1. On our development machines the following code works exactly how we want it. pages = Magick::Image.from_blob(book.to_pdf.render){ self.density = 300 } page = pages[0] image_file = Tempfile.new(['preview_image', '.png']) image_file.binmode image_file.write( page.to_blob { |opt| opt.format = "PNG" } ) We thens save the image_file and all is peachy. When we deployed to a review server on Heroku, though, the generated image has a white background. It turns out that