r15997 by christoph - fixed spelling error and list tags
scribus-commit
scribus-commit at lists.scribus.net
Fri Nov 26 06:38:18 CET 2010
Author: christoph
Date: Fri Nov 26 05:38:18 2010
New Revision: 15997
URL: http://scribus.info/websvn/listing.php?repname=Scribus&sc=1&rev=15997
Log:
fixed spelling error and list tags
Modified:
trunk/Scribus/doc/en/importhints1.html
Modified: trunk/Scribus/doc/en/importhints1.html
URL: http://scribus.info/websvn/diff.php?repname=Scribus&rev=15997&path=/trunk/Scribus/doc/en/importhints1.html
==============================================================================
--- trunk/Scribus/doc/en/importhints1.html (original)
+++ trunk/Scribus/doc/en/importhints1.html Fri Nov 26 05:38:18 2010
@@ -9,18 +9,18 @@
<p>EPS (Encapsulated PostScript) is a subset of the page description language <a href="http://www.tailrecursive.org/postscript/what-is-it.html">PostScript</a>. While PostScript is used to describe the graphical elements of one or more pages in a device-independent manner, an EPS file contains PostScript elements for a single image, and, importantly, must include a so-called Bounding Box, a rectangular which is necessary to describe the dimensions of the image. Like PostScript, an EPS file can contain bitmap images (pixels) vector data and text. Also, most, if not all EPS files are not meant to be edited, since EPS, like PDF, is designed as an exchange format.</p>
<h3>Why EPS?</h3>
-<p>Perhaps the main reason to use EPS is its ubiquity in most professional print workflows. If in doubt, most graphics professional will ask for or send you an EPS file, which is sometimes seen as the lowest common denominator for high-quality graphics files. Also, the EPS format is well-documented, and the specification is <a href="http://www.adobe.com/content/dam/Adobe/en/devnet/postscript/pdfs/5002.EPSF_Spec.pdf">publically available</a>. When it comes to vector graphics, EPS (or a successor format like AI or PDF) is unsurpassed in terms of quality. While relatively unimportant with small graphics in a flier, it’s safe to say that for large output media like posters, EPS may be the only reliable choice for vector graphics if superior print quality is important. Finally, the EPS format provides some features that are important in professional printing, like font embedding or support for CMYK and spot colors.</p>
+<p>Perhaps the main reason to use EPS is its ubiquity in most professional print workflows. If in doubt, most graphics professional will ask for or send you an EPS file, which is sometimes seen as the lowest common denominator for high-quality graphics files. Also, the EPS format is well-documented, and the specification is <a href="http://www.adobe.com/content/dam/Adobe/en/devnet/postscript/pdfs/5002.EPSF_Spec.pdf">publicly available</a>. When it comes to vector graphics, EPS (or a successor format like AI or PDF) is unsurpassed in terms of quality. While relatively unimportant with small graphics in a flier, it’s safe to say that for large output media like posters, EPS may be the only reliable choice for vector graphics if superior print quality is important. Finally, the EPS format provides some features that are important in professional printing, like font embedding or support for CMYK and spot colors.</p>
<h3>EPS Import</h3>
<p> There are two basic methods of importing EPS files, and both have pluses and minuses. For some files you can choose which method suits your needs best, while other files can only be imported one way.</p>
<h4>EPS Previews</h4>
-<p>One of the idiosyncracies of the EPS format that frequently causes confusion with inexperienced users is the EPS preview. The PostScript language had been designed to describe pages for a printing device, and at the time the format was introduced, computers weren’t capable of rendering the highly complex content of a PS file on screen. The same was, of course, true for EPS, and to provide users some visual indication of a file’s content, preview images were embedded in an EPS file. Unfortunately, there is no uniform standard for the format of the preview image, and the preview isn’t even required. As a result, applications on Macs used the Mac’s PICT format for previews, Windows applications Windows Metafiles, and UNIX programs ASCII-encoded bitmaps, which made the preview unworkable across platforms. For those who previously avoided using EPS files because of their lacking preview and/or poor support by programs like word processors, there is som!
e good news: Scribus will always create a useable preview in its file dialogs, either based on the embedded preview, or, if the latter doesn’t work, by using Ghostscript to create a low-resolution PNG that displays the content of an EPS file. Likewise, no matter how you import an EPS, what you see in Scribus is always the orginal content, not a preview. Be aware, though, that a Scribus file dialog always indicates the color space and the resolution of the preview image, not the ones in the EPS itself. Note that creating the preview for a large and complex EPS file may take some time to render:</p><br>
+<p>One of the idiosyncracies of the EPS format that frequently causes confusion with inexperienced users is the EPS preview. The PostScript language had been designed to describe pages for a printing device, and at the time the format was introduced, computers weren’t capable of rendering the highly complex content of a PS file on screen. The same was, of course, true for EPS, and to provide users some visual indication of a file’s content, preview images were embedded in an EPS file. Unfortunately, there is no uniform standard for the format of the preview image, and the preview isn’t even required. As a result, applications on Macs used the Mac’s PICT format for previews, Windows applications Windows Metafiles, and UNIX programs ASCII-encoded bitmaps, which made the preview unworkable across platforms. For those who previously avoided using EPS files because of their lacking preview and/or poor support by programs like word processors, there is som!
e good news: Scribus will always create a useable preview in its file dialogs, either based on the embedded preview, or, if the latter doesn’t work, by using Ghostscript to create a low-resolution PNG that displays the content of an EPS file. Likewise, no matter how you import an EPS, what you see in Scribus is always the orginal content, not a preview. Be aware, though, that a Scribus file dialog always indicates the color space and the resolution of the preview image, not the ones in the EPS itself. Also note that creating the preview for a large and complex EPS file in a file dialog may take some time to render:</p><br>
<table width="100%"><tr><td align="center"><img src="images/eps-imp1.png" title="EPS preview in a file dialog" alt="EPS preview in a file dialog" /></td></tr></table><br>
<h4>Importing into an image frame</h4>
-<p>This is usually the safest way to import an EPS. Provided Ghostscript is installed and properly <a href="gsfont.html">configured</a>, it works just like with any other <a href="WwImages.html">bitmap image</a>. However, since Scribus uses Ghostscript to rasterize the EPS, loading and rendering may take some time.</p>
+<p>This is usually the safest way to import an EPS. Provided Ghostscript is installed and properly <a href="gsfont.html">configured</a>, it works just like with any other <a href="WwImages.html">bitmap image</a>. However, since Scribus uses Ghostscript to rasterize the EPS, loading and rendering may take some time, depending on the complexity of the file.</p>
<h5>Caveats</h5>
<ul>
@@ -43,7 +43,8 @@
<ul>
<li>Importing an EPS file as a vector drawing may take <b>very</b> long, depending on the complexity of the source file. If you choose this import method, Scribus displays a progress dialog, which can give you an impression of the work that’s going on in the background, e.g. analyzing the EPS, and generating native Scribus objects:<br>
<table width="100%"><tr><td align="center"><img src="images/eps-imp2.png" title="EPS import progress" alt="EPS import progress" /></td></tr></table><br>
-</li>Many EPS files that contain beautiful artwork look like they consist exclusively of vector data. However, if you take a closer look, you will notice that more often than not a “vector” drawing actually contains bitmap files as well. There can be many reasons for the inclusion of bitmap files in EPS “drawings”. For example, an artist using Illustrator may have worked with bitmap design elements for performance reasons (using hundreds of vector elements requires much more computing power). Another reason may be that the program that created the EPS has some artistic features that cannot be “translated” into PostScript, so certain vector elements had to be converted to bitmaps. Also note that many design templates for fliers or postcards combine vector data, bitmaps and fonts into a single file, simply because EPS files can be read by many drawing and page layout programs.<br>
+</li>
+<li>Many EPS files that contain beautiful artwork look like they consist exclusively of vector data. However, if you take a closer look, you will notice that more often than not a “vector” drawing actually contains bitmap files as well. There can be many reasons for the inclusion of bitmap files in EPS “drawings”. For example, an artist using Illustrator may have worked with bitmap design elements for performance reasons (using hundreds of vector elements requires much more computing power). Another reason may be that the program that created the EPS has some artistic features that cannot be “translated” into PostScript, so certain vector elements had to be converted to bitmaps. Also note that many design templates for fliers or postcards combine vector data, bitmaps and fonts into a single file, simply because EPS files can be read by many drawing and page layout programs.<br>
If you are working with this kind of “mixed” EPS, you need to be very careful! First, when such a file is being imported into Scribus, Ghostscript will convert every single bitmap in the source file into a format that can be read by Scribus. This may take quite some time, but more importantly, Ghostscript will save every converted bitmap on your hard disk in your home directory, and depending on the content of the source EPS, you may run out of disk space faster than you can imagine! Since Scribus files are plain text and do not store any bitmap data, you will also have to distribute all the converted bitmap files with your SLA file if you want to edit or output the file on another computer. To find the required files, look for files with the name of the original EPS and the file extensions PNG, TIF(F), PSD and DAT (the DAT files are so-called “raw” bitmaps). This can be quite cumbersome, and you can make your life easier by using <i>File > Collect f!
or Output</i>.<br><br>
<table border="1" align="center">
<tbody>
More information about the scribus-commit
mailing list