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Subject: Any map digitization guidelines/spectifications (2)
Date: Tue, 11 Jun 2013 07:11:25 -0700
From: Virginia R Hetrick PhD <[log in to unmask]>
To: Maps, Air Photo, GIS Forum - Map Librarianship <[log in to unmask]>
Hi, folks -
I'm not a librarian by trade these days; but, as an industrial
strength map user and sometime cartographer, I'd like to make a couple
of suggestions about scanned cartographic products. These are NOT
standards. But they are things that I've run into using scanned
materials and I think would be helpful to y'all.
First, please go to the following page which contains a list of US
National Park System maps at:
http://www.nps.gov/hfc/cfm/carto-detail.cfm?Alpha=nps
and download the first item under National Park System Brochure Map,
the .pdf file which came out towards the end of last month. DO NOT
CLOSE THIS PAGE because I'm going to write about it farther on down in
this email.
Once you have that map downloaded, slide down to the bottom of the
page and download the .pdf file of the Wall Map and download this link
as well:
http://hfc.nps.gov/carto/PDF/NPSmap1.pdf
After you've downloaded the .pdf files, load map2 into whatever you
normally use to read .pdf files; it makes no difference whether you
use Acrobat Reader, Standard, or Professional.
What I really like about the way these folks do things is that they've
worked out how to make their maps so that the text (place names, etc.)
content doesn't become pixelated even though the shaded relief is.
Just out of curiosity, I've filled in the the pane on Acrobat's Zoom
toolbar with numbers starting at 35% and finishing at 6400%.
Why anybody'd want to do that in real life, I have some doubts, but
it's extremely valuable to users who want to look at the detail in a
state or region to be able to blow things up that have this particular
property. It is possible to PRINT this particular map on a single
8.5x11 page (though the text gets kind of mushed together). But, by
using the tiling feature in the Print dialogue available in Acrobat
Standard or Pro, you can also print it on letter-size sheets that are
printed so that you can tape them together and I've printed it so that
I have a 2-sheet version in one of my reference notebooks and an
8-sheet version (two rows of 4 sheets each) on the wall in my kitchen
(hey, sooner or later, a map nut runs out of wall-space in the
"normal" home!).
Looking at the other products available for this particular map, I
suspect it has to do with thoughtful planning in creation of the map
because it's a property of nearly all their maps that have been made
in the last 8-10 years.
So, I have no clue whether this can be done with documents that are
scanned. But, being able to blow things up is HUGELY useful for those
of us who are often trying to match objects and scales. I'd encourage
anybody scanning maps and other non-text materials to do so at a DPI
density to allow non-destructive uses that users need.
Thanks for listening.
virginia
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Virginia R. Hetrick, here in sunny California
Email: [log in to unmask]
"There is always hope."
My fave: http://www.washington.edu/cambots/camera1_l.jpg
There's no place like: 34N 8' 25.40", 117W 58' 5.36"
if you can't be at: 48N 7' 4.54" 122W 45' 50.95"
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