Hi,
I don't think there is a clean way to do this in MapInfo. We have been
through this last year when we published our atlas and it is a very tough
problem, because MapInfo doesn't manage colors. MapInfo only work in RGB
and doesn't tag the exported files with any icc profiles. So the
conversion has to be made in another program.
If you export your maps to a raster file, then it's relatively easy to
find a program affecting the SRGB color profile to your file and to
translate this color space to another CMYK profile. The best is to get the
profile from your printer, or you can convert to a standard color space,
like Euroscale coated or not, or to the color standard of the US (I forgot
its name). So, exporting to a raster file and managing the colors in
Photoshop or InDesign is a good solution to handle color management.
However if you have very fine and detailed datas on your maps, you will
never get the quality of a vector file.
Vector files are bad to handle colors however. First MapInfo doesn't
export AI (Adobe Illustrator) files, but only to wmf files (the Window
metafile standard). Anyway, neither of these vector files allows control
over the conversion from RGB to CMYK. They seem to assume that if you need
to print in CMYK, then you are using CMYK color palettes to make your
drawings. There are no controlled conversion from RGB to CMYK.
So what did we do ? We entered in a complicated dialogue with a
commercial press house, made several rounds of tests with them. The final
solution was that we exported the maps to wmf files and incorporated them
in InDesign without any color managements. We provided test prints made on
our Xerox printer which is able to print good colors starting from an RGB
document. Starting from these prooves, the press house calibrated the
colors of it's presses correctly and in the end the colors were matched
pretty well.
It's a great pain in the back that MIP doesn't offer CMYK palettes and
only work in the RGB world. Well at least it's the case with version 7.5
.. may be things have improved with version 7.8 ?
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"Ali, Naz @ Vancouver" <Naz.Ali
26.10.2005 23:21
Pour : "MI-L (E-mail)" <[email protected]>
cc :
Objet : MI-L From RGB to CMYK (MapInfo 7.8)
Hi again Group:
Is there a way to convert the colours in MapInfo from RGB to CMYK? I am
sending thid map to a commercial printer as PDF. I just got a proof back
and
the colours don't look the same as what I would print here in-house! I am
not very familiar with MapBasic so maybe there is a way in MapInfo or a
tool
that would be useful. Suggestions!
Thanks!
Naz Ali | GIS Marketing Services
CB Richard Ellis Limited
1111 West Georgia Street, Suite 600 | Vancouver, BC V6E 4M3
T 604 662 5173 | F 604 684 9368
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