Erm, pick interlace=false instead. That was just a test and I forgot to put that back<br><br><div class="gmail_quote">On 25 August 2010 13:22, Wim Vanbelle <span dir="ltr">&lt;<a href="mailto:wimvanbelle@gmail.com">wimvanbelle@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Hi Steve,<br><br>I have this in my file:<br><br>        OUTPUTFORMAT<br>                NAME &quot;AGGPNG&quot;<div class="im">
<br>                DRIVER &quot;AGG/PNG&quot;<br>                EXTENSION &quot;png&quot;<br></div>                MIMETYPE &quot;image/png;mode=24bit;&quot;<br>
                IMAGEMODE RGBA<br>                FORMATOPTION &quot;INTERLACE=true&quot;<div class="im"><br>                FORMATOPTION &quot;QUANTIZE_NEW=ON&quot;<br>                FORMATOPTION &quot;QUANTIZE_FORCE=ON&quot;<br>
</div>                FORMATOPTION &quot;QUANTIZE_DITHER=ON&quot;<br>
                FORMATOPTION &quot;QUANTIZE_COLORS=256&quot;<br>        END<br><br>And in my layer, if you want opacity:<br><br>                OPACITY 60<br><br><br>That should render nice lines :).<div><div></div><div class="h5">
<br><br><br><br><br><br>
<div class="gmail_quote">On 24 August 2010 21:16, Stephen Woodbridge <span dir="ltr">&lt;<a href="mailto:woodbri@swoodbridge.com" target="_blank">woodbri@swoodbridge.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">

If I want to generate RGBA transparent images using AGG, what should my OUTPUTFORMAT block look like?<br>
<br>
<br>
I was using this one for 8-bit images, but the anti aliasing was creating blackish artifacts along the rendered lines. Is there a way to avoid them?<br>
<br>
  OUTPUTFORMAT<br>
    NAME &quot;agg_qn&quot;<br>
    DRIVER &quot;AGG/PNG&quot;<br>
    EXTENSION &quot;png&quot;<br>
    MIMETYPE &quot;image/png&quot;<br>
    IMAGEMODE RGBA<br>
    TRANSPARENT ON<br>
    FORMATOPTION &quot;INTERLACE=false&quot;<br>
    FORMATOPTION &quot;QUANTIZE_NEW=ON&quot;<br>
    FORMATOPTION &quot;QUANTIZE_FORCE=ON&quot;<br>
    FORMATOPTION &quot;QUANTIZE_DITHER=OFF&quot;<br>
    FORMATOPTION &quot;QUANTIZE_COLORS=37&quot;<br>
    FORMATOPTION &quot;TRANSPARENT=ON&quot;<br>
  END<br>
<br>
Trying 32bit RGBA:<br>
<br>
  IMAGECOLOR 0 0 0<br>
<br>
  OUTPUTFORMAT<br>
    NAME &quot;agg_qn&quot;<br>
    DRIVER &quot;AGG/PNG&quot;<br>
    EXTENSION &quot;png&quot;<br>
    MIMETYPE &quot;image/png&quot;<br>
    IMAGEMODE RGBA<br>
    TRANSPARENT ON<br>
    FORMATOPTION &quot;TRANSPARENT=ON&quot;<br>
  END<br>
<br>
Generated black backgrounds and not transparent. Is it as simple as removing the IMAGECOLOR? I didn&#39;t try that.<br>
<br>
-Steve W<br>
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</blockquote></div><br>
</div></div></blockquote></div><br>