# Im trying to make Thumbnail pics -- any suggestions? **URL:** \ **Category:** ruby-talk\ **Created:** [28 November 2007 17:35 UTC](https://rubytalk.org/t/im-trying-to-make-thumbnail-pics-any-suggestions/42580 "2007-11-28T17:35:00Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![Wiz\_Pendases](https://avatars.discourse-cdn.com/v4/letter/w/34f0e0/32.png) [@Wiz\_Pendases](https://rubytalk.org/u/Wiz_Pendases)\ **Post date:** [28 November 2007 17:35 UTC](https://rubytalk.org/t/im-trying-to-make-thumbnail-pics-any-suggestions/42580/1 "2007-11-28T17:35:00Z")
Im trying to make Thumbnail pics -- any suggestions? (dont know wher to start) ---
**Author:** ![Piyush\_Ranjan](https://avatars.discourse-cdn.com/v4/letter/p/a587f6/32.png) [@Piyush\_Ranjan](https://rubytalk.org/u/Piyush_Ranjan)\ **Post date:** [28 November 2007 17:45 UTC](https://rubytalk.org/t/im-trying-to-make-thumbnail-pics-any-suggestions/42580/2 "2007-11-28T17:45:04Z")
Use rmagick which is a sort of a ruby binding on ImageMagick and grpahicsmagick > **···** > > On Nov 28, 2007 11:05 PM, \ wrote: > > > Im trying to make Thumbnail pics -- any suggestions? (dont know wher > > to start) ---
**Author:** ![Tom\_Reilly](https://avatars.discourse-cdn.com/v4/letter/t/9de0a6/32.png) [@Tom\_Reilly](https://rubytalk.org/u/Tom_Reilly)\ **Post date:** [28 November 2007 23:01 UTC](https://rubytalk.org/t/im-trying-to-make-thumbnail-pics-any-suggestions/42580/3 "2007-11-28T23:01:39Z")
wiz\_pendases@yahoo.com wrote: > Im trying to make Thumbnail pics -- any suggestions? (dont know wher > to start) # Make Thumb Nails # This works fine to make thumbnails for my web site # lots of luck #Tom Reilly require 'rmagick' include Magick def rsz(hgt,wdt,msze)     if hgt \> wdt         r = msze.to\_f / hgt.to\_f         return [msze, (wdt.to\_f \* r).to\_i]     else         r = msze.to\_f / wdt.to\_f         return [(hgt.to\_f \* r).to\_i, msze]     end end tnDir = ".\\" jpgArray = Array.new dir = Dir.new(tnDir) dir.each do |d|     jpgArray.push(d) if d =~ /jpg/ end pix = ImageList.new jpgArray.each {|x| pix.read(x) if x .downcase =~ /jpg/} pix.each do |x|        rows = x.rows     columns = x.columns     factor1 = 200     factor2 = 450     a = rsz(columns,rows,factor1)       x.resize!(a[0],a[1])         #img.resize!(cols,rows) # img2 = x.frame         x.write(".\\stamp\\#{"t" + x.filename}") end ---
**Author:** ![Eric\_Tucker](https://avatars.discourse-cdn.com/v4/letter/e/59ef9b/32.png) [@Eric\_Tucker](https://rubytalk.org/u/Eric_Tucker)\ **Post date:** [28 November 2007 18:08 UTC](https://rubytalk.org/t/im-trying-to-make-thumbnail-pics-any-suggestions/42580/4 "2007-11-28T18:08:10Z")
I am using rmagick. However, I hear good things about imagescience if your needs featurewise are more modest. Sent wirelessly via BlackBerry from T-Mobile. > **···** > > -----Original Message----- > From: "Piyush Ranjan" \ > > Date: Thu, 29 Nov 2007 02:45:04 > To:ruby-talk@ruby-lang.org (ruby-talk ML) > Subject: Re: Im trying to make Thumbnail pics -- any suggestions? > > Use rmagick which is a sort of a ruby binding on ImageMagick and > grpahicsmagick > > On Nov 28, 2007 11:05 PM, \ wrote: > > > Im trying to make Thumbnail pics -- any suggestions? (dont know wher > > to start) ---
**Author:** ![Aredridel1](https://avatars.discourse-cdn.com/v4/letter/a/d07c76/32.png) [@Aredridel1](https://rubytalk.org/u/Aredridel1)\ **Post date:** [28 November 2007 18:27 UTC](https://rubytalk.org/t/im-trying-to-make-thumbnail-pics-any-suggestions/42580/5 "2007-11-28T18:27:50Z")
Or ImageScience or the epeg library > **···** > > On Nov 28, 2007, at 10:45 AM, Piyush Ranjan wrote: > > > Use rmagick which is a sort of a ruby binding on ImageMagick and > > grpahicsmagick ---
**Author:** ![Ryan\_Davis1](https://yyz1.discourse-cdn.com/flex029/user_avatar/rubytalk.org/ryan_davis1/32/1848_2.png) [@Ryan\_Davis1](https://rubytalk.org/u/Ryan_Davis1)\ **Post date:** [29 November 2007 00:29 UTC](https://rubytalk.org/t/im-trying-to-make-thumbnail-pics-any-suggestions/42580/6 "2007-11-29T00:29:25Z")
Blech! This is exactly why I wrote image\_science... well, that and installing ImageMagick/rmagick was always a PITA. require 'rubygems' require 'image\_science' Dir["\*.jpg"].each do |file|    ImageScience.with\_image(file) do |img|      img.thumbnail(200) do |thumb|        thumb.save "#{file.sub(/.jpg$/, '')}\_thumb.png"      end    end end > **···** > > On Nov 28, 2007, at 15:01 , Tom Reilly wrote: > > > # Make Thumb Nails > > # This works fine to make thumbnails for my web site > > # lots of luck > > #Tom Reilly > > > > require 'rmagick' > > include Magick > > > > def rsz(hgt,wdt,msze) > >   if hgt \> wdt > >       r = msze.to\_f / hgt.to\_f > >       return [msze, (wdt.to\_f \* r).to\_i] > >   else > >       r = msze.to\_f / wdt.to\_f > >       return [(hgt.to\_f \* r).to\_i, msze] > >   end > > end > > > > tnDir = ".\\" > > jpgArray = Array.new > > dir = Dir.new(tnDir) > > dir.each do |d| > >   jpgArray.push(d) if d =~ /jpg/ > > end > > > > pix = ImageList.new > > jpgArray.each {|x| pix.read(x) if x .downcase =~ /jpg/} > > > > pix.each do |x| > >     rows = x.rows > >   columns = x.columns > >   factor1 = 200 > >   factor2 = 450 > >   a = rsz(columns,rows,factor1) > >    x.resize!(a[0],a[1]) > >       #img.resize!(cols,rows) > > # img2 = x.frame > >       x.write(".\\stamp\\#{"t" + x.filename}") > > end ---
**Author:** ![Thufir](https://avatars.discourse-cdn.com/v4/letter/t/ee7513/32.png) [@Thufir](https://rubytalk.org/u/Thufir)\ **Post date:** [29 November 2007 02:30 UTC](https://rubytalk.org/t/im-trying-to-make-thumbnail-pics-any-suggestions/42580/7 "2007-11-29T02:30:27Z")
Very cool 🙂 I'm ok with the ruby, but how would you put that \*into\* a rails project so that the above code is run when the new images are imported to the db? thanks, Thufir > **···** > > On Thu, 29 Nov 2007 09:29:25 +0900, Ryan Davis wrote: > > > require 'rubygems' > > require 'image\_science' > > > > Dir["\*.jpg"].each do |file| > >    ImageScience.with\_image(file) do |img| > >      img.thumbnail(200) do |thumb| > >        thumb.save "#{file.sub(/.jpg$/, '')}\_thumb.png" > >      end > >    end > > end ---
**Author:** ![Andrew\_Stewart](https://avatars.discourse-cdn.com/v4/letter/a/9de053/32.png) [@Andrew\_Stewart](https://rubytalk.org/u/Andrew_Stewart)\ **Post date:** [29 November 2007 09:59 UTC](https://rubytalk.org/t/im-trying-to-make-thumbnail-pics-any-suggestions/42580/8 "2007-11-29T09:59:33Z")
Have a look at the attachment\_fu plugin: [http://svn.techno-weenie.net/projects/plugins/attachment\_fu/](http://svn.techno-weenie.net/projects/plugins/attachment_fu/) Regards, Andy Stewart > **···** > > On 29 Nov 2007, at 02:30, Thufir wrote: > > > On Thu, 29 Nov 2007 09:29:25 +0900, Ryan Davis wrote: > > > > > require 'rubygems' > > > require 'image\_science' > > > > > > Dir["\*.jpg"].each do |file| > > >    ImageScience.with\_image(file) do |img| > > >      img.thumbnail(200) do |thumb| > > >        thumb.save "#{file.sub(/.jpg$/, '')}\_thumb.png" > > >      end > > >    end > > > end > > > > Very cool 🙂 > > > > I'm ok with the ruby, but how would you put that \*into\* a rails project > > so that the above code is run when the new images are imported to the db? > > ------- > > > **[AirBlade Software](https://airbladesoftware.com/)** > > > > Andrew Stewart of AirBlade Software. ---
**Author:** ![James\_Britt](https://avatars.discourse-cdn.com/v4/letter/j/22d042/32.png) [@James\_Britt](https://rubytalk.org/u/James_Britt)\ **Post date:** [29 November 2007 12:00 UTC](https://rubytalk.org/t/im-trying-to-make-thumbnail-pics-any-suggestions/42580/9 "2007-11-29T12:00:35Z")
Put things like that into the Model file. > **···** > > On Nov 28, 2007, at 8:30 PM, Thufir wrote: > > > Very cool 🙂 > > > > I'm ok with the ruby, but how would you put that \*into\* a rails project > > so that the above code is run when the new images are imported to the db? > > > > thanks, > > > > Thufir ---
**Author:** ![Piyush\_Ranjan](https://avatars.discourse-cdn.com/v4/letter/p/a587f6/32.png) [@Piyush\_Ranjan](https://rubytalk.org/u/Piyush_Ranjan)\ **Post date:** [30 November 2007 07:50 UTC](https://rubytalk.org/t/im-trying-to-make-thumbnail-pics-any-suggestions/42580/10 "2007-11-30T07:50:22Z")
you can also use filecolumn for rails file upload and thumbnailing needs. > **···** > > On Nov 29, 2007 5:30 PM, John Joyce \ wrote: > > > On Nov 28, 2007, at 8:30 PM, Thufir wrote: > > \> > > \> Very cool 🙂 > > \> > > \> > > \> I'm ok with the ruby, but how would you put that \*into\* a rails > > \> project > > \> so that the above code is run when the new images are imported to > > \> the db? > > \> > > \> > > \> > > \> thanks, > > \> > > \> Thufir > > \> > > \> > > > > Put things like that into the Model file.