[Mapserver-users] image qyuality
Juanse
georef@tie.cl
Fri, 31 Jan 2003 16:33:28 -0300
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Right, but how do you take care of the scale?
I am generating the map, the scale and the reference map as different =
png, with the png names stored in a database. On other process I am =
generating a pdf output with all the images.
If I double (say from 72 to 144) the size of the map, I should do the =
same with the scale size?
Juanse
temuko-Chile
----- Original Message -----=20
From: Ed McNierney=20
To: Juanse ; mapserver-users@lists.gis.umn.edu=20
Sent: Monday, February 03, 2003 3:08 PM
Subject: RE: [Mapserver-users] image qyuality
Juanse -
You don't need to do anything at all. MapServer generates raster =
output images that are X pixels wide by Y pixels high. When you print =
them, if you print them at a high resolution, you will get a small, =
high-quality image. If you print them at a low resolution you will get =
a large, low-quality image. If you need an 8.5 inch by 11 inch 300-dpi =
image, make one that is 2550 pixels (8.5 x 300) by 3300 pixels (11 x =
300), print it at 300 dpi, and you will get what you want.
- Ed
Ed McNierney
President and Chief Mapmaker
TopoZone.com / Maps a la carte, Inc.
73 Princeton Street, Suite 305
North Chelmsford, MA 01863
ed@topozone.com
(978) 251-4242=20
-----Original Message-----
From: Juanse [mailto:georef@tie.cl]
Sent: Friday, January 31, 2003 12:53 PM
To: mapserver-users@lists.gis.umn.edu
Subject: [Mapserver-users] image qyuality
Is it possible to change image resolution other way than changing =
the constant value (72 DPI) and recompiling mapserver? I need to =
increase it for generating printed maps.
Juanse
temuko-Chile
---
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<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Right, but how do you take care of the=20
scale?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I am generating the map, the scale and =
the=20
reference map as different png, with the png names stored in a database. =
On=20
other process I am generating a pdf output with all the =
images.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>If I double (say from 72 to 144) the =
size of the=20
map, I should do the same with the scale size?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Juanse</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>temuko-Chile</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A title=3Ded@topozone.com href=3D"mailto:ed@topozone.com">Ed =
McNierney</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A title=3Dgeoref@tie.cl=20
href=3D"mailto:georef@tie.cl">Juanse</A> ; <A=20
title=3Dmapserver-users@lists.gis.umn.edu=20
=
href=3D"mailto:mapserver-users@lists.gis.umn.edu">mapserver-users@lists.g=
is.umn.edu</A>=20
</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Monday, February 03, 2003 =
3:08=20
PM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> RE: [Mapserver-users] =
image=20
qyuality</DIV>
<DIV><BR></DIV>
<DIV><SPAN class=3D437360618-03022003><FONT face=3DArial =
color=3D#0000ff=20
size=3D2>Juanse -</FONT></SPAN></DIV>
<DIV><SPAN class=3D437360618-03022003><FONT face=3DArial =
color=3D#0000ff=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D437360618-03022003><FONT face=3DArial =
color=3D#0000ff size=3D2>You=20
don't need to do anything at all. MapServer generates raster =
output=20
images that are X pixels wide by Y pixels high. When you print =
them, if=20
you print them at a high resolution, you will get a small, =
high-quality=20
image. If you print them at a low resolution you will get a =
large,=20
low-quality image. If you need an 8.5 inch by 11 inch 300-dpi =
image,=20
make one that is 2550 pixels (8.5 x 300) by 3300 pixels (11 x 300), =
print it=20
at 300 dpi, and you will get what you want.</FONT></SPAN></DIV>
<DIV><SPAN class=3D437360618-03022003><FONT face=3DArial =
color=3D#0000ff=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D437360618-03022003> <FONT =
face=3DArial=20
color=3D#0000ff size=3D2>- Ed</FONT></SPAN></DIV>
<DIV><SPAN class=3D437360618-03022003>
<P><FONT size=3D2>Ed McNierney<BR>President and Chief =
Mapmaker<BR>TopoZone.com /=20
Maps a la carte, Inc.<BR>73 Princeton Street, Suite 305<BR>North =
Chelmsford,=20
MA 01863<BR>ed@topozone.com<BR>(978) 251-4242 =
</FONT></P></SPAN></DIV>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
<DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
size=3D2>-----Original Message-----<BR><B>From:</B> Juanse=20
[mailto:georef@tie.cl]<BR><B>Sent:</B> Friday, January 31, 2003 =
12:53=20
PM<BR><B>To:</B> =
mapserver-users@lists.gis.umn.edu<BR><B>Subject:</B>=20
[Mapserver-users] image qyuality<BR><BR></FONT></DIV>
<DIV>Is it possible to change image resolution other way than =
changing the=20
constant value (72 DPI) and recompiling mapserver? I need to =
increase=20
it for generating printed maps.</DIV>
<DIV><BR>Juanse<BR>temuko-Chile<BR></DIV>
<DIV> </DIV>
<DIV><BR>---<BR>Outgoing mail is certified Virus Free.<BR>Checked by =
AVG=20
anti-virus system (<A=20
=
href=3D"http://www.grisoft.com">http://www.grisoft.com</A>).<BR>Version: =
6.0.445 / Virus Database: 250 - Release Date:=20
21/01/03</DIV></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>
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