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<div dir="ltr" align="left"><font color="#0000ff" size="2" face="Arial"><span class="814262813-09052012">Hi,</span></font></div>
<div dir="ltr" align="left"><font color="#0000ff" size="2" face="Arial"><span class="814262813-09052012"></span></font> </div>
<div dir="ltr" align="left"><font color="#0000ff" size="2" face="Arial"><span class="814262813-09052012">Perhaps you cannot literally set a colour as transparent in a tiff but for sure you can define a nodata value and then applications can make nodata pixels
transparent. That is the most normal way to do it with Mapserver and OFFSITE. I believe that Mapserver does not even care if tiff has a nodata tag set but you can give whatever value for offsite in a mapfile.</span></font></div>
<div dir="ltr" align="left"><font color="#0000ff" size="2" face="Arial"><span class="814262813-09052012"></span></font> </div>
<div dir="ltr" align="left"><font color="#0000ff" size="2" face="Arial"><span class="814262813-09052012">I have not played at all with alpha, but perhaps there is some way to give a list of pixel values which should be transparent and convert them all to a
suitable alpha channel value.</span></font></div>
<div dir="ltr" align="left"><font color="#0000ff" size="2" face="Arial"><span class="814262813-09052012"></span></font> </div>
<div dir="ltr" align="left"><font color="#0000ff" size="2" face="Arial"><span class="814262813-09052012">-Jukka Rahkonen-</span></font></div>
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<div dir="ltr" lang="fi" class="OutlookMessageHeader" align="left"><font size="2" face="Tahoma">Fernando Norte<span class="814262813-09052012"><font color="#0000ff" face="Arial"> wrote:</font></span></font><br>
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Hi Christoph,<br>
<br>
I try to understand, how did you set the specific color to transparent in a TIFF?
<br>
For raster you can set the level of transparency/opacity to the image not to a color.
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<br>
Att,<br clear="all">
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<p style="MARGIN: 0px; FONT-SIZE: 16px"><b style="COLOR: rgb(28,119,155)">Fernando Norte</b></p>
<p style="MARGIN: 0px">Desenvolvedor SIGWeb</p>
<p style="MARGIN: 20px 0px 0px">tel.(31) 2533.9900</p>
<p style="MARGIN: 0px">cel.(31) 9119.8814</p>
<p style="MARGIN: 0px">skype: fernandoglobalgeo</p>
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<div class="gmail_quote">2012/5/9 Christoph Schumacher <span dir="ltr"><<a href="mailto:christoph.schumacher@pbs-schumacher.de" target="_blank">christoph.schumacher@pbs-schumacher.de</a>></span><br>
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Hello everybody,<br>
<br>
I have a problem setting up my wms. <br>
I have multiple tiff images that have different colours to be set up as transparaent.
<br>
<br>
With the offsite parameter I can only set one colour transparent. <br>
<br>
Now my question is: Is there a way to make various colour transparent?? <br>
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<br>
best wishes and thank you very much<span class="HOEnZb"><font color="#888888"><br>
<br>
christoph<br>
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