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Hi Ed,<br>
<br>
Thanks for this. I may check my label columns in the database for
NULLs and replace them with an empty string ('') instead. It looks
like a classic 'null' issue doesn't it? <br>
<br>
Yup - zoom in, zoom out, pan etc and the garbage generally just
disappears, or changes its 'content'. Often the angle is the same
(suspicious) but sometimes not..... There aren't any features on the
angles so i'm not sure if it's a labelling issue or not. Plus the
problem only occurs about 1 in 20 or so map draws so is kind of hard to
get a definite problem case. <br>
<br>
Checkout these additional ones :<br>
<br>
<a class="moz-txt-link-freetext" href="http://demo.mercatorgeosystems.co.uk/tmp/1158243616324003.png">http://demo.mercatorgeosystems.co.uk/tmp/1158243616324003.png</a><br>
<br>
And just to prove it's not all CA.... ;-)<br>
<br>
<a class="moz-txt-link-freetext" href="http://demo.mercatorgeosystems.co.uk/tmp/1158244089248601.png">http://demo.mercatorgeosystems.co.uk/tmp/1158244089248601.png</a><br>
<a class="moz-txt-link-freetext" href="http://demo.mercatorgeosystems.co.uk/tmp/1158244147717403.png">http://demo.mercatorgeosystems.co.uk/tmp/1158244147717403.png</a><br>
<br>
Thanks Ed,<br>
Steve<br>
<br>
<br>
Take a <br>
Ed McNierney wrote:
<blockquote
cite="mid4BF377919225F449BB097CB76FFE9BC83DE181@ptolemy.topozone.com"
type="cite">
<meta http-equiv="Content-Type" content="text/html; ">
<meta content="MSHTML 6.00.2900.2963" name="GENERATOR">
<div align="left" dir="ltr"><span class="892111514-14092006"><font
color="#0000ff" face="Arial" size="2">Steve -</font></span></div>
<div align="left" dir="ltr"><span class="892111514-14092006"></span> </div>
<div align="left" dir="ltr"><span class="892111514-14092006"><font
color="#0000ff" face="Arial" size="2">Well, just about anything in
California is a little odd.....</font></span></div>
<div align="left" dir="ltr"><span class="892111514-14092006"></span> </div>
<div align="left" dir="ltr"><span class="892111514-14092006"><font
color="#0000ff" face="Arial" size="2">Are you saying that if you
simply refresh the image and re-draw the exact same map you'll see this
line of text change? That's puzzling. I would speculate that it's a
(garbage) text label for some garbage feature - there's some feature
that's defective in both location and label (attributes messed up) and
that feature is being labeled.</font></span></div>
<div align="left" dir="ltr"><span class="892111514-14092006"></span> </div>
<div align="left" dir="ltr"><span class="892111514-14092006"><font
color="#0000ff" face="Arial" size="2">The first thing I'd try is to
eliminate layers from the image, testing until the garbage goes away.
That could identify the offending layer; if there are multiple classes
in that layer, use the same system to identify which class it is. Then
see if that says anything helpful.</font></span></div>
<div align="left" dir="ltr"><span class="892111514-14092006"></span> </div>
<div align="left" dir="ltr"><span class="892111514-14092006"> <font
color="#0000ff" face="Arial" size="2">- Ed</font></span></div>
<div align="left" dir="ltr"><span class="892111514-14092006">
<p><font size="2">Ed McNierney<br>
President and Chief Mapmaker<br>
TopoZone.com / Maps a la carte, Inc.<br>
73 Princeton Street, Suite 305<br>
North Chelmsford, MA 01863<br>
<a class="moz-txt-link-abbreviated" href="mailto:ed@topozone.com">ed@topozone.com</a><br>
(978) 251-4242 </font></p>
</span></div>
<br>
<div class="OutlookMessageHeader" align="left" dir="ltr" lang="en-us">
<hr tabindex="-1"><font face="Tahoma" size="2"><b>From:</b> UMN
MapServer Users List [<a class="moz-txt-link-freetext" href="mailto:MAPSERVER-USERS@LISTS.UMN.EDU">mailto:MAPSERVER-USERS@LISTS.UMN.EDU</a>] <b>On
Behalf Of </b>Steve Hall<br>
<b>Sent:</b> Thursday, September 14, 2006 9:22 AM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:MAPSERVER-USERS@LISTS.UMN.EDU">MAPSERVER-USERS@LISTS.UMN.EDU</a><br>
<b>Subject:</b> [UMN_MAPSERVER-USERS] Strange map draw issue<br>
</font><br>
</div>
<font size="-1"><font face="Arial">Hi All,<br>
<br>
I've been using Mapserver for a while now, in a variety of situations,
but am seeing a slightly strange behaviour in one of my setups.
Basically i'm getting a line of 'garbage' being drawn across the
generated map image.<br>
<br>
A sample of what I mean is here :<br>
<br>
<a class="moz-txt-link-freetext"
href="http://demo.mercatorgeosystems.co.uk/tmp/1158239461914994.png">http://demo.mercatorgeosystems.co.uk/tmp/1158239461914994.png</a><br>
<br>
There is no road feature or other line that should be there, and if I
redraw the map the line of garbage will either disappear or change in
either length or 'content'. It doesn't appear all the time, but
certainly enough to be annoying.<br>
<br>
My MapServer version is 4.8.1, running with Apache 1.3.31 on Fedora
Core 4. I've got several other MapServer based configurations on this
setup and they're all working fine. The data source in question is an
Oracle 10g (10.1) database which is also used for other systems and
seems fine.....<br>
<br>
Weird eh? Any suggestions much appreciated!<br>
<br>
Thanks,<br>
Steve H<br>
</font></font><br>
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</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
Steve Hall
Technical Consultant
Mercator GeoSystems Ltd
Tel (UK) : +44 (0) 114 235 3409
Tel (US) : +1 (562) 735 3541
Fax : +44 (0) 114 235 3409
Mobile : +44 (0) 771 828 6323
Email : <a class="moz-txt-link-abbreviated" href="mailto:steve.hall@mercatorgeosystems.com">steve.hall@mercatorgeosystems.com</a>
Web : <a class="moz-txt-link-abbreviated" href="http://www.mercatorgeosystems.com">www.mercatorgeosystems.com</a>
Skype : mercatorgeosystems
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