Imagemagick Tricks: Web Image Effects from the Command Line And Php [ペーパーバック]

This is a *really* bad book. It fails on several levels. The organization is bad. It is poorly written. It is incomplete. It includes almost no explanitory material. Oh, did I mention that the color examples are in black and white?

(1) Image Magick is large and complex. That is where a good book could win over the on-line documentation. The on-line documentation is really useful---if you already know what you are looking for. But it makes it difficult to move beyond what you already understand. The first thing an Image Magick book is going to do is provide some structure to the myriad nooks and crannies of the product. This book doesn't even begin to do that.

(2) The text of this book is brief, chatty and, in many places, downright ungrammatical. The essense of the book is chapter after chapter of "here is a

command line instruction; this is what it produces." One might browse the book in hopes of finding a command line that does (or does within epsilon) what they want to do. But the book will not lead them to a solution or an understanding of a solution.

The book is chatty to the point of pain: "You may ask if there is any solution to affect a specific location with any of these filters."

(3) I solved all of my Image Magick problems (and gained some insight into the tool) through the on-line documentation. It took some time. I read this book and I found

that most of those solutions weren't even touched on in the book. Where is the OReilly book on Image Magick?

(4) Far too many sentences begin with the phrase, "As you can see from the given command line" or something similar. When, in fact, it is not clear at all from the given command line. And there is a dirth of attendant explanatory bulk. There is so much material in Image Magick and this book is pitiously thin, both in size and content.

(5) Hopefully, there are on-line versions of the example outputs from the book. If they exist, they are not easy to find. I didn't find them. The greyed out images in the book leave a lot (okay, everything) to the imagination.

Very, very disappointing.

I read the other reviews on this book and should have listen.

I bought the book to help me with using imagemagick within PHP. (I didn't test the command line stuff as I wanted to use imagemagick in php applications).

Anyway, i downloaded the sample applications from the website they give in the book. NONE... I REPEAT NONE... of the applications worked flawlessly. They either had errors or didn't display anything on the screen. I tried the examples in Chapter 8.

I had to add $ to variables that were missing them. When i finally fixed all the errors for their "confirmation box" script the screen is blank. I added code to display back to me "what the variables were holding" and i can see that the "characters" are being generated but... they are just "not displaying on the screen". I tend believe that's because there's not code written to make it do that. We... have to do that ourselves but... they don't tell you that in the beginning. They display a box saying "type the characters you see..." so naturally i expect to see that. But not so.

I tried the other 2 scripts in chapter 8 (the watermark one) again nothing but a blank screen. The ecard works somewhat but no text is displayed on the image like it shows in the book. further investigation shows that they are "NOT" even getting to step #2 which contains all the Imagemagick code. I try pointing the ecard7.htm to step #2 and then find there are errors in the script. I fix them and i get to another script that also has errors msg.

All said i gave up trying to get these applications to work. It's clear these scripts are "NOT COMPLETE" and are "heavily filled with errors.

All said i could go on but simply put the code came directly from their site so it's no excuse why the code is filled with "errors" such as $ missing from in front of variables.

As i said... the tricks are that you have been "encouraged" to buy this book. They don't give complete examples, it seems you are expected to "add stuff" to their code. But... they don't tell you that you have too. I think this book was rushed to press (they may have been running behind on the deadline and figured something is better than nothing). But they should have waited as the only enjoyable part of this book is looking at the cover. The contents inside (with regards the parts dealing with using Imagemagic with PHP) are not complete.

I finally gave up on this book and went online, did some searching on google and found some tutorials to help me with what i needed to accomplish. This book helped me "0%". It was a complete waste of money.

Save your $$, check it out at your local library or visit a bookstore and look inside "BEFORE" purchasing as this book in my opinion is NOT worth 34.99+

Very, Very, Very disappointed.

ImageMagick is a command-line image processing system from ImageMagick Studio, LLC. It is used by websites for dynamic processing and displaying images. If the number of images on your site is not too large, you will probably process the images in a graphics program such as Photoshop and display the images on your site using HTML and CSS. Although it is mostly used by websites with huge numbers of images, another option is to use a command-line system such as ImageMagick to process and display your images on the fly. For example, the free online encyclopedia Wikipedia uses ImageMagick's command-line utilities for their imaging needs.

In this book, Sohail Salehi teaches what ImageMagick is and how to do some nice tricks with it. There are many small workshop exercises throughout the book that reinforce what you have learned. Salehi begins with an introduction and then walks you through installing and configuring ImageMagic on your system. Next, he covers the basic command-line utilities ranging from the simple resizing and formatting of images to applying special effects, watermarks and creating animation all from text-based commands.

I found the second half of the book to be the most useful. It presents several web applications using ImageMagick and PHP. The first was a confirmation-code box. You have probably encountered one of these when you opened an account on the web. It is that little box containing a mystery code of numbers and letters and you must enter this code in the web form to prove that you are a real person filling out the form and not a web robot. Salehi shows you how to use ImageMagick and PHP to generate the mystery code and display it in the web form. Another application that I really liked was a three-step process for a customizable e-card application which uses ImageMagick utilities to create the thumbnail and gallery images for an HTML-based web gallery. He also shows you how to use ImageMagick to dynamically customize the e-cards with text and graphics based on user input.

Sohail Salehi has contributed to over twenty books and many articles related to graphics and programming.