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#21
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Okay, I don't want to be the cause of any bad mojo on this group, but
I appreciate the links. I actually did not know that high res .tiff files were available for the charts. It's too bad they're not available in some vector format, because making a seriously huge printout would be rad! thanks, -- dave j Kyler Laird wrote in message ... "Peter Duniho" writes: Sure, any print shop should be able to handle the sectional images. http://weborder.kinkos.com/start.cgi I went to that link and could not find any offer to print sectional images. It says that they handle standard formats. I'd expect you to realize that TIFF is fairly standard. Maybe you could be more specific? Where, exactly, is one supposed to get the images for Kinkos (or any other print shop) to print? It's difficult for me to believe that you've never seen the FAA sectional images nor were you able to find them, but... http://aviationtoolbox.org/raw_data/...onals/current/ --kyler |
#22
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Kyler, thanks for the links. These files are exactly what the doctor
ordered. I know you've worked on squishing sectional edges together intelligently. Does getting the North/South charts to print on the same side of the same page require this mathe magic, or can it be arranged just by lining them up carefully in photoshop before sending to a print house? -- dave j Kyler Laird wrote in message ... "Peter Duniho" writes: Sure, any print shop should be able to handle the sectional images. http://weborder.kinkos.com/start.cgi I went to that link and could not find any offer to print sectional images. It says that they handle standard formats. I'd expect you to realize that TIFF is fairly standard. Maybe you could be more specific? Where, exactly, is one supposed to get the images for Kinkos (or any other print shop) to print? It's difficult for me to believe that you've never seen the FAA sectional images nor were you able to find them, but... http://aviationtoolbox.org/raw_data/...onals/current/ --kyler |
#23
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jay somerset writes:
A better proposition would be to get a high-density digital version and print it at the "size to page" setting. They won't fit together at the borders perfectly, as each is an independent Lambert conformation, which distorts them to provide the best two-dimensional map. Fitting them together isn't a problem. (O.k., it *is* a problem, but it's one that's solved in a straightforward way.) They're georeferenced. https://aviationtoolbox.org/Members/...s/map_explorer The problem is that things are in different places on different sectionals so they don't line up well. https://aviationtoolbox.org/Members/...selected.y=314 --kyler |
#24
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#25
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Dave Jacobowitz wrote:
It's too bad they're not available in some vector format, because making a seriously huge printout would be rad! I'm not sure what you mean by seriously huge but did you see the size of the tiff files? If you were to print them at 150 DPI you would have a 27 x 80" map. For a map like this even 72 DPI would look good and that would be over twice the size. That seems pretty huge to me. -- Chris W Bring Back the HP 15C http://hp15c.org Not getting the gifts you want? The Wish Zone can help. http://thewishzone.com |
#26
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Dave Jacobowitz wrote:
Kyler, thanks for the links. These files are exactly what the doctor ordered. I know you've worked on squishing sectional edges together intelligently. Does getting the North/South charts to print on the same side of the same page require this mathe magic, or can it be arranged just by lining them up carefully in photoshop before sending to a print house? I did some playing with the dfw sectional and after stretching the south image about 15 pixels wider I did the cut and past and a little tweaking of the text in the overlap area and came up with this http://cdw.homelinux.com:8087/Dallas-FtWorth72.jpg keep in mind that this jpg is 9MB and my upstream speed isn't all that good so it will take some time to download it. The image is about 11,000 by 8,000 pixels -- Chris W Bring Back the HP 15C http://hp15c.org Not getting the gifts you want? The Wish Zone can help. http://thewishzone.com |
#28
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Chris W writes:
I did some playing with the dfw sectional and after stretching the south image about 15 pixels wider I did the cut and past and a little tweaking of the text in the overlap area and came up with this Oh! I almost forgot...I made these for my moving map experiment awhile ago. http://aviationtoolbox.org/munge/data/square_chunked/ JPEG versions are here. http://aviationtoolbox.org/munge/dat...nked/1350_PPD/ (There are 1350 pixels per degree). Just pick the square by the longitude and latitude of the upper left hand corner. They should fit together easily. They're not, however, Lambert Conformal Conic anymore. Don't try to plot a route on them. --kyler |
#29
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In article ,
Kyler Laird wrote: They're not, however, Lambert Conformal Conic anymore. Don't try to plot a route on them. What are they? They seem squished vertically. Is that the projection or some non-square pixel thing? -- Ben Jackson http://www.ben.com/ |
#30
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(Ben Jackson) writes:
They're not, however, Lambert Conformal Conic anymore. Don't try to plot a route on them. What are they? I'd call it "unprojected latitude and longitude." http://www.colorado.edu/geography/gc...f/threepro.gif They seem squished vertically. Is that the projection or some non-square pixel thing? On the sectionals the pixels represent (approximately) 63 x 63 meters. In these images they represent 1/1350 x 1/1350 degrees. http://www.colorado.edu/geography/gc...if/nalccna.gif This reprojection is certainly going to provide a distorted image. The distortion seems to be less at lower latitudes. http://aviationtoolbox.org/munge/dat...nk_-100_25.jpg I'll leave it to someone else to explain exactly how meters per degree of latitude changes in a conic. http://www.colorado.edu/geography/gc...if/nalccna.gif Of course if you're just making a pretty map of some area using basic image manipulation software, you can simply un-squish it to your taste. --kyler |
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