Hi,
I encountered the same kind of problems one year ago while we prepared our
atlas for print. When you chose to export your windows, there are several
types of format which you can chose.
a) Raster format export your maps as if they were photographs. That could
create huge files depending on your resolution and map dimension. Nowaday
printers takes up to 1200dpi if they are good printers. But 600 dpi shold
be good enough.. With raster format, things could go wrong in different
ways; one important thing lies with PageMaker too : are you sure that you
have chosen the right options in dealing with the picture ? Sometimes it
can compress pictures which isn't a good idea. There are two kinds of
raster formats : the uncompressed ones : *.tif, *.bmp, *.psd; the first
is the most frequently used; the second is a Microsoft format and the last
is a Photoshop format. Of the three, the tif format is probably the most
frequently used. Among the compressed files format, you have the *.jpg and
the *.png. The frequently encountered jpg format, is a compressed format
which creates bad artifacts with limits and could blurr your maps; it's
made for photographic images, not for charts or maps which should keep
clean borders. The *png format is also compressed but of better quality.
It's the way to go if you want a good compromise between size and quality.
If space isn't a criteria, then the Tif format is better. As far as
compressed format goes, it would be better to have *.Gif format rather
than *.jpg. The former is able to keep clean borders, while the other
isn't.
b) Vector format exports your maps as they should be exported, as clean
lines (and not as a grid of minuscule points). It's the best way to keep
your map clean and intact. Plus it doesn't take as much space as raster
pictures. MapInfo only offers two vector formats : *.wmf and *.emf. Both
are windows format and as such not much liked by press specialists. The
enhanced format compress the file and doesn't produce results as clean and
clear as the *.wmf format. It would be nice if MapInfo was allowing the
exportation to the *.eps format, much more frequently used in the printing
world.
We use InDesign -also from Adobe- and after much tests we found out that
the best results were obtained by importing *.wmf files in InDesign. Now
you also have to be carefull and to choose the right options in PageMaker.
You didn't say whether you were exporting from a Mapwindow or from a
layout window. I assume it was from a layout window. In this case the best
results are obtained when you view your page at its real size (zoom at
100%), avoiding to scale it up or down.
Hope this help.
Christiane
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"Penfold, Robert" <[EMAIL PROTECTED]>
01.09.2005 16:56
Pour : "Mapinfo-L \(E-mail\)" <[email protected]>
cc :
Objet : MI-L save window & print resolution
Can someone tell me why the maps exported via "save window as" turn out
blurry despite exporting them at 600 dpi? I just want my exported maps to
look as good as they do when I print directly from MapInfo. That is, I
want them camera ready for use in Pagemaker or (forgive me) MS Word.
Printing to *.pdf produces equally blurry images.
BTW, I tried searching the archive but get the following error:
ht://Dig error
htsearch detected an error. Please report this to the webmaster of this
site. The error message is:
Unable to read configuration file
Rob
_________________________________________________
Rob Penfold, PhD
Postdoctoral Fellow
Office of Clinical Science
Columbus Children's Hospital
700 Children's Drive, room J1413
Columbus, OH, 43205-2696
(614) 722-3589 voice
(614) 722-3544 fax
