[Mapserver-users] .tiff resolution
Charlton Purvis
cpurvis at asgnet.psc.sc.edu
Fri Feb 7 11:20:05 EST 2003
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Thanks, Ed. You also responded to someone else's extents question
(earlier) which helped me clarify what the .wld values really meant.
=20
I think that I'm pretty close to getting what I want, thanks to your
advice. All that remains is the scale element (I think). I'm not sure
what this value really represents.
=20
Here are the stats:
.wld
31.240377
0.000000
0.000000
-31.280899
593226.924630
3637755.000000
=20
.map
EXTENT 593226.925 3623812.758425 605731.177534 3637755
SIZE 400 445
=20
I came up w/ these extents based on the approach you explained. And the
.tiff is 400x445 (w x h), hence the SIZE. But now what happens is that
the image appears pretty small w/i my window until I zoom.
=20
If I look at the .tif w/i ArcCatalog, I see that the extents are:
Left: 593226.925000
Right: 605731.177534
Top: 3637755.000000
Bottom: 3623812.758425
=20
If I plug these extents into MapServer, the image takes up the whole
view, but it's not as hi-res as the original .tif. My comparison is
simply an eyeball check: MapServer vs. Photoshop.
=20
Am I on the right track?
=20
I'm trying to look at the extents of the demo bath_mapserver.wld and
.tif that come bundled w/ MapLab's demo, and the numbers don't line up
as I would expect.
=20
Infinite thanks for your help.
=20
Charlton
=20
-----Original Message-----
From: Ed McNierney [mailto:ed at topozone.com]=20
Sent: Thursday, February 06, 2003 4:36 PM
To: Charlton Purvis; mapserver-users at lists.gis.umn.edu
Subject: RE: [Mapserver-users] .tiff resolution
=20
Charlton -
=20
You need to make sure that (a) the spatial extents of the image
displayed are the same in both cases and (b) the physical dimensions of
the image in pixels are the same in both cases.
=20
You don't mention the spatial resolution of your image, but here's an
example. You can check your WLD file to see the X and Y sizes of a
pixel. Let's assume they're both 3 meters; in that case you need to be
sure the EXTENT of the image in meters is 3 times the number of pixels
displayed in each dimension.
=20
If you need more info it would help to post your MAP and WLD files.
=20
- Ed
=20
Ed McNierney
President and Chief Mapmaker
TopoZone.com / Maps a la carte, Inc.
73 Princeton Street, Suite 305
North Chelmsford, MA 01863
ed at topozone.com
(978) 251-4242=20
=20
-----Original Message-----
From: Charlton Purvis [mailto:cpurvis at asgnet.psc.sc.edu]
Sent: Thursday, February 06, 2003 4:01 PM
To: mapserver-users at lists.gis.umn.edu
Subject: [Mapserver-users] .tiff resolution
I'd like a 72dpi .tiff to be displayed as accurately in
MapServer as it is Photoshop. This .tiff is a product of ArcMap. I
took a .shp and exported it to a map (.tiff, 72dpi). Before I did this
I set the extents manually. I used these extents to fill in my
MapServer extents. A .wld was also a product of the ArcMap .tiff
translation. So I carried that over to my data directory along w/ the
.tiff.
=20
So I've ended up w/ a .tiff and a .wld, but I must be missing
something since it really doesn't look as clean from w/i MapServer as I
think a 72dpi image should. What can I adjust?
=20
The MapServer width and height are in proportion to the extents,
and I'm working exclusively under MapLab. I haven't hardcoded anything
under the min/max scale (mostly because I don't have a firm grasp on
what that is actually doing).
=20
Any help would greatly be appreciated.
=20
=20
=20
=20
Charlton Purvis
(803) 777-4453 : voice
(803) 777-8833 : fax
cpurvis at sc.edu
=20
Advanced Solutions Group
Department of Physics and Astronomy
University of South Carolina
Columbia, SC 29208
=20
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<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;color:navy'>Thanks, Ed.<span style=3D'mso-spacerun:yes'> =
</span>You
also responded to someone else’s extents question (earlier) which =
helped
me clarify what the .wld values really =
meant.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;color:navy'>I think that I’m pretty close to getting what I =
want,
thanks to your advice.<span style=3D'mso-spacerun:yes'> </span>All =
that
remains is the scale element (I think).<span =
style=3D'mso-spacerun:yes'>
</span>I’m not sure what this value really =
represents.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;color:navy'>Here are the stats:<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D1 =
color=3Dnavy
face=3D"Courier New"><span style=3D'font-size:8.0pt;font-family:"Courier =
New";
color:navy'>.wld<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D1 =
color=3Dnavy
face=3D"Courier New"><span style=3D'font-size:8.0pt;font-family:"Courier =
New";
color:navy'>31.240377<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D1 =
color=3Dnavy
face=3D"Courier New"><span style=3D'font-size:8.0pt;font-family:"Courier =
New";
color:navy'>0.000000<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D1 =
color=3Dnavy
face=3D"Courier New"><span style=3D'font-size:8.0pt;font-family:"Courier =
New";
color:navy'>0.000000<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D1 =
color=3Dnavy
face=3D"Courier New"><span style=3D'font-size:8.0pt;font-family:"Courier =
New";
color:navy'>-31.280899<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D1 =
color=3Dnavy
face=3D"Courier New"><span style=3D'font-size:8.0pt;font-family:"Courier =
New";
color:navy'>593226.924630<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D1 =
color=3Dnavy
face=3D"Courier New"><span style=3D'font-size:8.0pt;font-family:"Courier =
New";
color:navy'>3637755.000000<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D1 =
color=3Dnavy
face=3D"Courier New"><span style=3D'font-size:8.0pt;font-family:"Courier =
New";
color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D1 =
color=3Dnavy
face=3D"Courier New"><span style=3D'font-size:8.0pt;font-family:"Courier =
New";
color:navy'>.map<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D1 =
color=3Dnavy
face=3D"Courier New"><span style=3D'font-size:8.0pt;font-family:"Courier =
New";
color:navy'>EXTENT 593226.925 3623812.758425 605731.177534 =
3637755<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D1 =
color=3Dnavy
face=3D"Courier New"><span style=3D'font-size:8.0pt;font-family:"Courier =
New";
color:navy'>SIZE 400 445<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D2 =
color=3Dnavy
face=3DArial><span =
style=3D'font-size:10.0pt;color:navy'><o:p> </o:p></span></font></p>=
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;color:navy'>I came up w/ these extents based on the approach you
explained.<span style=3D'mso-spacerun:yes'> </span>And the .tiff =
is 400x445
(w x h), hence the SIZE. <span =
style=3D'mso-spacerun:yes'> </span>But now
what happens is that the image appears pretty small w/i my window until =
I zoom.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;color:navy'>If I look at the .tif w/i ArcCatalog, I see that the =
extents
are:<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D1 =
color=3Dnavy
face=3D"Courier New"><span style=3D'font-size:8.0pt;font-family:"Courier =
New";
color:navy'>Left:<span style=3D'mso-spacerun:yes'> =
</span>593226.925000<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D1 =
color=3Dnavy
face=3D"Courier New"><span style=3D'font-size:8.0pt;font-family:"Courier =
New";
color:navy'>Right:<span style=3D'mso-spacerun:yes'> =
</span>605731.177534<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D1 =
color=3Dnavy
face=3D"Courier New"><span style=3D'font-size:8.0pt;font-family:"Courier =
New";
color:navy'>Top:<span style=3D'mso-spacerun:yes'> =
</span>3637755.000000<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D1 =
color=3Dnavy
face=3D"Courier New"><span style=3D'font-size:8.0pt;font-family:"Courier =
New";
color:navy'>Bottom:<span style=3D'mso-spacerun:yes'> =
</span>3623812.758425<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;color:navy'>If I plug these extents into MapServer, the image =
takes up
the whole view, but it’s not as hi-res as the original .tif.<span
style=3D'mso-spacerun:yes'> </span>My comparison is simply an =
eyeball
check:<span style=3D'mso-spacerun:yes'> </span>MapServer vs. =
Photoshop.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;color:navy'>Am I on the right track?<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;color:navy'>I’m trying to look at the extents of the demo
bath_mapserver.wld and .tif that come bundled w/ MapLab’s demo, =
and the
numbers don’t line up as I would =
expect.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;color:navy'>Infinite thanks for your =
help.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;color:navy'>Charlton<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DTahoma><span
style=3D'font-size:10.0pt;font-family:Tahoma'>-----Original =
Message-----<br>
<b><span style=3D'font-weight:bold'>From:</span></b> Ed McNierney
[mailto:ed at topozone.com<span class=3DGramE>] <br>
<b><span style=3D'font-weight:bold'>Sent</span></b></span><b><span
style=3D'font-weight:bold'>:</span></b> </span></font><st1:date =
Month=3D"2" Day=3D"6"
Year=3D"2003"><font face=3DTahoma><span =
style=3D'font-family:Tahoma'>Thursday,
February 06, 2003</span></font></st1:date><font face=3DTahoma><span
style=3D'font-family:Tahoma'> </span></font><st1:time Hour=3D"16" =
Minute=3D"36"><font
face=3DTahoma><span style=3D'font-family:Tahoma'>4:36 =
PM</span></font></st1:time><font
face=3DTahoma><span style=3D'font-family:Tahoma'><br>
<b><span style=3D'font-weight:bold'>To:</span></b> Charlton Purvis;
mapserver-users at lists.gis.umn.edu<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> RE: =
[Mapserver-users]
.tiff resolution</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dblue face=3DArial><span
style=3D'font-size:10.0pt;color:blue'>Charlton -</span></font><font =
size=3D3
face=3D"Times New Roman"><span =
style=3D'font-size:12.0pt;font-family:"Times New =
Roman"'><o:p></o:p></span></font></p>
</div>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt;font-family:"Times New =
Roman"'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dblue face=3DArial><span
style=3D'font-size:10.0pt;color:blue'>You need to make sure that (a) the =
spatial
extents of the image displayed are the same in both cases and (b) the =
physical
dimensions of the image in pixels are the same in both =
cases.</span></font><font
size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:12.0pt;font-family:"Times New =
Roman"'><o:p></o:p></span></font></p>
</div>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt;font-family:"Times New =
Roman"'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dblue face=3DArial><span
style=3D'font-size:10.0pt;color:blue'>You don't mention the spatial =
resolution of
your image, but here's an example. You can check your WLD file to =
see the
X and Y sizes of a pixel. Let's assume they're both 3 meters; in =
that
case you need to be sure the EXTENT of the image in meters is 3 times =
the
number of pixels displayed in each dimension.</span></font><font =
size=3D3
face=3D"Times New Roman"><span =
style=3D'font-size:12.0pt;font-family:"Times New =
Roman"'><o:p></o:p></span></font></p>
</div>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt;font-family:"Times New =
Roman"'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dblue face=3DArial><span
style=3D'font-size:10.0pt;color:blue'>If you need more info it would =
help to post
your MAP and WLD files.</span></font><font size=3D3 face=3D"Times New =
Roman"><span
style=3D'font-size:12.0pt;font-family:"Times New =
Roman"'><o:p></o:p></span></font></p>
</div>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt;font-family:"Times New =
Roman"'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt;font-family:"Times New =
Roman"'> </span></font><font
color=3Dblue><span style=3D'color:blue'>- Ed</span></font><font size=3D3
face=3D"Times New Roman"><span =
style=3D'font-size:12.0pt;font-family:"Times New =
Roman"'><o:p></o:p></span></font></p>
</div>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt;font-family:"Times New =
Roman"'> <o:p></o:p></span></font></p>
</div>
<div>
<p style=3D'margin-left:.5in'><font size=3D2 face=3D"Times New =
Roman"><span
style=3D'font-size:10.0pt'>Ed McNierney<br>
President and Chief Mapmaker<br>
TopoZone.com / Maps a la carte, Inc.<br>
</span></font><st1:Street><st1:address><font size=3D2><span =
style=3D'font-size:
10.0pt'>73 Princeton Street, Suite =
305</span></font></st1:address></st1:Street><font
size=3D2><span style=3D'font-size:10.0pt'><br>
</span></font><st1:place><st1:City><font size=3D2><span =
style=3D'font-size:10.0pt'>North
Chelmsford</span></font></st1:City><font size=3D2><span =
style=3D'font-size:10.0pt'>,
</span></font><st1:State><font size=3D2><span =
style=3D'font-size:10.0pt'>MA</span></font></st1:State><font
size=3D2><span style=3D'font-size:10.0pt'> =
</span></font><st1:PostalCode><font
size=3D2><span =
style=3D'font-size:10.0pt'>01863</span></font></st1:PostalCode></st1:plac=
e><font
size=3D2><span style=3D'font-size:10.0pt'><br>
ed at topozone.com<br>
(978) 251-4242 </span></font><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt;font-family:"Times New =
Roman"'> <o:p></o:p></span></font></p>
</div>
<blockquote =
style=3D'margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:0in;margin-right:0in;margin-bottom:
12.0pt;margin-left:.5in'><font size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;
font-family:Tahoma'>-----Original Message-----<br>
<b><span style=3D'font-weight:bold'>From:</span></b> Charlton Purvis
[mailto:cpurvis at asgnet.psc.sc.edu]<br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> =
</span></font><st1:date
Month=3D"2" Day=3D"6" Year=3D"2003"><font face=3DTahoma><span =
style=3D'font-family:Tahoma'>Thursday,
February 06, 2003</span></font></st1:date><font face=3DTahoma><span
style=3D'font-family:Tahoma'> </span></font><st1:time Hour=3D"16" =
Minute=3D"1"><font
face=3DTahoma><span style=3D'font-family:Tahoma'>4:01 =
PM</span></font></st1:time><font
face=3DTahoma><span style=3D'font-family:Tahoma'><br>
<b><span style=3D'font-weight:bold'>To:</span></b>
mapserver-users at lists.gis.umn.edu<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> =
[Mapserver-users] .tiff
resolution</span></font><font size=3D3 face=3D"Times New Roman"><span
style=3D'font-size:12.0pt;font-family:"Times New =
Roman"'><o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt'>I’d like a 72dpi .tiff to be displayed =
as
accurately in MapServer as it is Photoshop.<span
style=3D'mso-spacerun:yes'> </span>This .tiff is a product of =
ArcMap.<span
style=3D'mso-spacerun:yes'> </span>I took a .shp and exported it =
to a map (.tiff,
72dpi).<span style=3D'mso-spacerun:yes'> </span>Before I did this =
I set the
extents manually.<span style=3D'mso-spacerun:yes'> </span>I used =
these
extents to fill in my MapServer extents.<span =
style=3D'mso-spacerun:yes'>
</span>A .wld was also a product of the ArcMap .tiff translation.<span
style=3D'mso-spacerun:yes'> </span>So I carried that over to my =
data
directory along w/ the .tiff.<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt'>So I’ve ended up w/ a .tiff and a .wld, =
but I
must be missing something since it really doesn’t look as clean =
from w/i
MapServer as I think a 72dpi image should.<span =
style=3D'mso-spacerun:yes'>
</span>What can I adjust?<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt'>The MapServer width and height are in =
proportion to
the extents, and I’m working exclusively under MapLab.<span
style=3D'mso-spacerun:yes'> </span>I haven’t hardcoded =
anything under
the min/max scale (mostly because I don’t have a firm grasp on =
what that
is actually doing).<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt'>Any help would greatly be =
appreciated.<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;mso-no-proof:yes'> <o:p></o:p></span></fon=
t></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;mso-no-proof:yes'> <o:p></o:p></span></fon=
t></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;mso-no-proof:yes'> <o:p></o:p></span></fon=
t></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D1 =
face=3DArial><span
style=3D'font-size:7.5pt;mso-no-proof:yes'>Charlton =
Purvis</span></font><span
style=3D'mso-no-proof:yes'><o:p></o:p></span></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D1 =
face=3DArial><span
style=3D'font-size:7.5pt;mso-no-proof:yes'>(803) 777-4453 : =
voice</span></font><span
style=3D'mso-no-proof:yes'><o:p></o:p></span></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D1 =
face=3DArial><span
style=3D'font-size:7.5pt;mso-no-proof:yes'>(803) 777-8833 : =
fax</span></font><span
style=3D'mso-no-proof:yes'><o:p></o:p></span></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D1 =
face=3DArial><span
style=3D'font-size:7.5pt;mso-no-proof:yes'><a =
href=3D"mailto:cpurvis at sc.edu">cpurvis at sc.edu</a></span></font><span
style=3D'mso-no-proof:yes'><o:p></o:p></span></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;mso-no-proof:yes'> <o:p></o:p></span></fon=
t></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D1 =
face=3DArial><span
style=3D'font-size:7.5pt;mso-no-proof:yes'>Advanced Solutions Group<br>
Department of Physics and Astronomy<br>
</span></font><st1:place><st1:PlaceType><font size=3D1><span =
style=3D'font-size:
7.5pt;mso-no-proof:yes'>University</span></font></st1:PlaceType><font =
size=3D1><span
style=3D'font-size:7.5pt;mso-no-proof:yes'> of =
</span></font><st1:PlaceName><font
size=3D1><span style=3D'font-size:7.5pt;mso-no-proof:yes'>South =
Carolina</span></font></st1:PlaceName></st1:place><font
size=3D1><span style=3D'font-size:7.5pt;mso-no-proof:yes'><br>
</span></font><st1:place><st1:City><font size=3D1><span =
style=3D'font-size:7.5pt;
mso-no-proof:yes'>Columbia</span></font></st1:City><font =
size=3D1><span
style=3D'font-size:7.5pt;mso-no-proof:yes'>, =
</span></font><st1:State><font
size=3D1><span =
style=3D'font-size:7.5pt;mso-no-proof:yes'>SC</span></font></st1:State><f=
ont
size=3D1><span style=3D'font-size:7.5pt;mso-no-proof:yes'> =
</span></font><st1:PostalCode><font
size=3D1><span =
style=3D'font-size:7.5pt;mso-no-proof:yes'>29208</span></font></st1:Posta=
lCode></st1:place><o:p></o:p></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt'><o:p> </o:p></span></font></p>
</blockquote>
</div>
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