<div dir="ltr">Hi Martin, <div>sorry for offtopic, but have you tried to use WMTS or TMS source for this CUZK map instead of WMS? My experiences shows, that wms source for ZM10 not always works as expected. TMS examles are available at <a href="http://tms.cuzk.cz/">http://tms.cuzk.cz/</a>.<br>
</div><div><br></div><div style>David</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">2013/3/31 Martin Kokeš <span dir="ltr"><<a href="mailto:shr3k@typo3-hosting.com" target="_blank">shr3k@typo3-hosting.com</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><u></u>
<div>
Hmm, after many experiments, even with nightly build and Pillow, case solved by forcing WMS to:<div><br><div><div> format: image/png</div><div> transparent: true</div><div><br></div><div>And globals to:</div><div>
<br></div><div><div> formats:</div><div> png24:</div><div> format: image/png</div><div> mode: RGBA</div><div class="im"><div> colors: 0</div><div> transparent: false</div><div> resampling_method: bicubic</div>
</div></div><div><br></div><div>Works fine also with:</div><div><br></div><div><div> png8:</div><div> format: image/png</div><div> mode: RGBA</div><div> colors: 256</div><div> resampling_method: bicubic</div>
<div> encoding_options:</div><div> quantizer: fastoctree</div></div><div><br></div><div>That's really magic. But error</div><div class="im"><div><br></div><div><span style="font-size:10pt">File "/usr/local/lib/python2.7/dist-packages/PIL/ImageSupport2.py", line 76, in unpack</span></div>
<div> raise ValueError(v)</div><div>ValueError: unpack requires a string argument of length 8</div><div><br></div></div><div>raises from time to time.</div><div><br></div><div>Martin</div><div><br></div><blockquote style="padding-left:5px;margin-left:5px;border-left:#0000ff 2px solid;margin-right:0px">
<hr><b>From:</b> Martin Kokeš [mailto:<a href="mailto:shr3k@typo3-hosting.com" target="_blank">shr3k@typo3-hosting.com</a>]<br><b>To:</b> <a href="mailto:MapProxy@lists.osgeo.org" target="_blank">MapProxy@lists.osgeo.org</a><br>
<b>Sent:</b> Sun, 31 Mar 2013 14:06:30 +0200<br><b>Subject:</b> [MapProxy] Output colors always reduced with PNG24 source<div><div class="h5"><br><br>
<font face="Tahoma, Verdana, sans-serif">Hello list,</font><div style="font-family:Tahoma,Verdana,sans-serif;font-size:10pt;font-style:normal;font-variant:normal;font-weight:normal;line-height:normal"><br></div><div style="font-family:Tahoma,Verdana,sans-serif;font-size:10pt;font-style:normal;font-variant:normal;font-weight:normal;line-height:normal">
I have following config (MP 1.5, PIL from Oliver's source<span style="font-size:10pt">):</span></div><div style="font-family:Tahoma,Verdana,sans-serif;font-size:10pt;font-style:normal;font-variant:normal;font-weight:normal;line-height:normal">
---</div><div><div><font face="Tahoma, Verdana, sans-serif">services:</font></div><div><font face="Tahoma, Verdana, sans-serif"> demo:</font></div><div><font face="Tahoma, Verdana, sans-serif"> kml:</font></div><div><font face="Tahoma, Verdana, sans-serif"> tms:</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> wmts:</font></div><div><font face="Tahoma, Verdana, sans-serif"> wms:</font></div><div><font face="Tahoma, Verdana, sans-serif"> srs: ["EPSG:900913"]</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> image_formats: ["image/png"]</font></div><div><font face="Tahoma, Verdana, sans-serif"><br></font></div><div><font face="Tahoma, Verdana, sans-serif">layers:</font></div>
<div><font face="Tahoma, Verdana, sans-serif"><br></font></div><div><font face="Tahoma, Verdana, sans-serif"> - name: test1</font></div><div><font face="Tahoma, Verdana, sans-serif"> title: Test with PNG24 source</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> sources: [test1_cache]</font></div><div><font face="Tahoma, Verdana, sans-serif"> - name: test2</font></div><div><font face="Tahoma, Verdana, sans-serif"> title: Test with JPEG source</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> sources: [test2_cache]</font></div><div><font face="Tahoma, Verdana, sans-serif"><br></font></div><div><font face="Tahoma, Verdana, sans-serif">caches:</font></div><div><font face="Tahoma, Verdana, sans-serif"><br>
</font></div><div><font face="Tahoma, Verdana, sans-serif"> test1_cache:</font></div><div><font face="Tahoma, Verdana, sans-serif"> sources: [test1_wms]</font></div><div><font face="Tahoma, Verdana, sans-serif"> grids: [global_mercator_osm]</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> format: png24</font></div><div><font face="Tahoma, Verdana, sans-serif"> cache:</font></div><div><font face="Tahoma, Verdana, sans-serif"> type: file</font></div><div>
<font face="Tahoma, Verdana, sans-serif"><br></font></div><div><font face="Tahoma, Verdana, sans-serif"> test2_cache:</font></div><div><font face="Tahoma, Verdana, sans-serif"> sources: [test2_wms]</font></div><div><font face="Tahoma, Verdana, sans-serif"> grids: [global_mercator_osm]</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> format: png24</font></div><div><font face="Tahoma, Verdana, sans-serif"> cache:</font></div><div><font face="Tahoma, Verdana, sans-serif"> type: file</font></div><div>
<font face="Tahoma, Verdana, sans-serif"><br></font></div><div><font face="Tahoma, Verdana, sans-serif">sources:</font></div><div><font face="Tahoma, Verdana, sans-serif"><br></font></div><div><font face="Tahoma, Verdana, sans-serif"> test1_wms:</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> type: wms</font></div><div><font face="Tahoma, Verdana, sans-serif"> req:</font></div><div><font face="Tahoma, Verdana, sans-serif"> url: <a href="http://geoportal.cuzk.cz/WMS_ZM10_PUB/service.svc/get" target="_blank">http://geoportal.cuzk.cz/WMS_ZM10_PUB/service.svc/get</a></font></div>
<div><font face="Tahoma, Verdana, sans-serif"> layers: GR_ZM10</font></div><div><font face="Tahoma, Verdana, sans-serif"> format: image/png</font></div><div><font face="Tahoma, Verdana, sans-serif"> transparent: false</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> coverage:</font></div><div><font face="Tahoma, Verdana, sans-serif"> bbox: [11.214011580382529, 47.964914601259672, 19.407662623095131, 51.691664934538636]</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> srs: 'EPSG:4326'</font></div><div><font face="Tahoma, Verdana, sans-serif"> supported_srs: ['EPSG:5514']</font></div><div><font face="Tahoma, Verdana, sans-serif"> min_scale: 2.5253813613805272</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> max_scale: 7576144.0841415804</font></div><div><font face="Tahoma, Verdana, sans-serif"> http:</font></div><div><font face="Tahoma, Verdana, sans-serif"> client_timeout: 300</font></div>
<div><font face="Tahoma, Verdana, sans-serif"><br></font></div><div><font face="Tahoma, Verdana, sans-serif"> test2_wms:</font></div><div><font face="Tahoma, Verdana, sans-serif"> type: wms</font></div><div><font face="Tahoma, Verdana, sans-serif"> req:</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> url: <a href="http://geoportal.cuzk.cz/WMS_ZM10_PUB/service.svc/get" target="_blank">http://geoportal.cuzk.cz/WMS_ZM10_PUB/service.svc/get</a></font></div><div><font face="Tahoma, Verdana, sans-serif"> layers: GR_ZM10</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> format: image/jpeg</font></div><div><font face="Tahoma, Verdana, sans-serif"> transparent: false</font></div><div><font face="Tahoma, Verdana, sans-serif"> coverage:</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> bbox: [11.214011580382529, 47.964914601259672, 19.407662623095131, 51.691664934538636]</font></div><div><font face="Tahoma, Verdana, sans-serif"> srs: 'EPSG:4326'</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> supported_srs: ['EPSG:5514']</font></div><div><font face="Tahoma, Verdana, sans-serif"> min_scale: 2.5253813613805272</font></div><div><font face="Tahoma, Verdana, sans-serif"> max_scale: 7576144.0841415804</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> http:</font></div><div><font face="Tahoma, Verdana, sans-serif"> client_timeout: 300</font></div><div><font face="Tahoma, Verdana, sans-serif"><br></font></div><div><font face="Tahoma, Verdana, sans-serif">grids:</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> global_mercator_osm:</font></div><div><font face="Tahoma, Verdana, sans-serif"> base: GLOBAL_MERCATOR</font></div><div><font face="Tahoma, Verdana, sans-serif"> num_levels: 20</font></div>
<div><font face="Tahoma, Verdana, sans-serif"><br></font></div><div><font face="Tahoma, Verdana, sans-serif">globals:</font></div><div><font face="Tahoma, Verdana, sans-serif"> srs:</font></div><div><font face="Tahoma, Verdana, sans-serif"> proj_data_dir: "proj_data"</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> image:</font></div><div><font face="Tahoma, Verdana, sans-serif"> paletted: false</font></div><div><font face="Tahoma, Verdana, sans-serif"> formats:</font></div><div>
<font face="Tahoma, Verdana, sans-serif"> png24:</font></div><div><font face="Tahoma, Verdana, sans-serif"> format: image/png</font></div><div><font face="Tahoma, Verdana, sans-serif"> mode: RGB</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> colors: 0</font></div><div><font face="Tahoma, Verdana, sans-serif"> transparent: false</font></div><div><font face="Tahoma, Verdana, sans-serif"> resampling_method: bicubic</font></div>
</div><div><font face="Tahoma, Verdana, sans-serif">---</font></div><div style="font-family:Tahoma,Verdana,sans-serif;font-size:10pt">This is source request for test1:</div><div><font face="Tahoma, Verdana, sans-serif"><a href="http://geoportal.cuzk.cz/WMS_ZM10_PUB/service.svc/get?styles=&format=image%2Fpng&height=1184&bbox=-742076.617816,-1045120.38486,-741052.456103,-1044098.3743&transparent=False&layers=GR_ZM10&service=WMS&width=1186&request=GetMap&srs=EPSG%3A5514&version=1.1.1" target="_blank">http://geoportal.cuzk.cz/WMS_ZM10_PUB/service.svc/get?styles=&format=image%2Fpng&height=1184&bbox=-742076.617816,-1045120.38486,-741052.456103,-1044098.3743&transparent=False&layers=GR_ZM10&service=WMS&width=1186&request=GetMap&srs=EPSG%3A5514&version=1.1.1</a></font></div>
<div style="font-family:Tahoma,Verdana,sans-serif;font-size:10pt;font-style:normal;font-variant:normal;font-weight:normal;line-height:normal"><br></div><div style="font-family:Tahoma,Verdana,sans-serif;font-size:10pt;font-style:normal;font-variant:normal;font-weight:normal;line-height:normal">
Sometimes I become this error:</div><div><div><font face="Tahoma, Verdana, sans-serif">[2013-03-31 13:59:19,391] mapproxy.wsgiapp - CRITICAL - fatal error in tms for /tms/1.0.0/test1_EPSG900913/16/70795/86663.png</font></div>
<div><font face="Tahoma, Verdana, sans-serif">Traceback (most recent call last):</font></div><div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/wsgiapp.py", line 166, in __call__</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> resp = self.handlers[handler_name].handle(req)</font></div><div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/service/base.py", line 30, in handle</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> return handler(parsed_req)</font></div><div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/service/tile.py", line 74, in map</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> tile = layer.render(tile_request, use_profiles=tile_request.use_profiles, coverage=limit_to)</font></div><div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/service/tile.py", line 265, in render</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> tile = self.tile_manager.load_tile_coord(tile_coord, with_metadata=True)</font></div><div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/cache/tile.py", line 105, in load_tile_coord</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> created_tiles = creator.create_tiles([tile])</font></div><div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/cache/tile.py", line 227, in create_tiles</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> created_tiles = self._create_meta_tiles(meta_tiles)</font></div><div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/cache/tile.py", line 300, in _create_meta_tiles</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> created_tiles.extend(self._create_meta_tile(meta_tile))</font></div><div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/cache/tile.py", line 309, in _create_meta_tile</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> meta_tile_image = self._query_sources(query)</font></div><div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/cache/tile.py", line 274, in _query_sources</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> return self.sources[0].get_map(query)</font></div><div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/source/wms.py", line 62, in get_map</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> resp = self._get_map(query)</font></div><div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/source/wms.py", line 81, in _get_map</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> return self._get_transformed(query, format)</font></div><div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/source/wms.py", line 124, in _get_transformed</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> query.size, dst_bbox, self.image_opts)</font></div><div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/image/transform.py", line 91, in transform</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> result = self._transform(src_img, src_bbox, dst_size, dst_bbox, image_opts)</font></div><div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/image/transform.py", line 156, in _transform</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> image_filter[image_opts.resampling])</font></div><div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/PIL/Image.py", line 1629, in transform</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> im.__transformer(box, self, QUAD, quad, resample, fill)</font></div><div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/PIL/Image.py", line 1674, in __transformer</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> image.load()</font></div><div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/PIL/ImageFile.py", line 212, in load</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> s = read(self.decodermaxblock)</font></div><div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/PIL/PngImagePlugin.py", line 401, in load_read</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> cid, pos, len = self.png.read()</font></div><div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/PIL/PngImagePlugin.py", line 93, in read</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> len, cid = self.fp.get("!I4s")</font></div><div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/PIL/ImageSupport2.py", line 105, in get</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> return self.read(struct.calcsize(fmt)).unpack(fmt)</font></div><div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/PIL/ImageSupport2.py", line 76, in unpack</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> raise ValueError(v)</font></div><div><font face="Tahoma, Verdana, sans-serif">ValueError: unpack requires a string argument of length 8</font></div><div><font face="Tahoma, Verdana, sans-serif">Traceback (most recent call last):</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/wsgiapp.py", line 166, in __call__</font></div><div><font face="Tahoma, Verdana, sans-serif"> resp = self.handlers[handler_name].handle(req)</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/service/base.py", line 30, in handle</font></div><div><font face="Tahoma, Verdana, sans-serif"> return handler(parsed_req)</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/service/tile.py", line 74, in map</font></div><div><font face="Tahoma, Verdana, sans-serif"> tile = layer.render(tile_request, use_profiles=tile_request.use_profiles, coverage=limit_to)</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/service/tile.py", line 265, in render</font></div><div><font face="Tahoma, Verdana, sans-serif"> tile = self.tile_manager.load_tile_coord(tile_coord, with_metadata=True)</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/cache/tile.py", line 105, in load_tile_coord</font></div><div><font face="Tahoma, Verdana, sans-serif"> created_tiles = creator.create_tiles([tile])</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/cache/tile.py", line 227, in create_tiles</font></div><div><font face="Tahoma, Verdana, sans-serif"> created_tiles = self._create_meta_tiles(meta_tiles)</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/cache/tile.py", line 300, in _create_meta_tiles</font></div><div><font face="Tahoma, Verdana, sans-serif"> created_tiles.extend(self._create_meta_tile(meta_tile))</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/cache/tile.py", line 309, in _create_meta_tile</font></div><div><font face="Tahoma, Verdana, sans-serif"> meta_tile_image = self._query_sources(query)</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/cache/tile.py", line 274, in _query_sources</font></div><div><font face="Tahoma, Verdana, sans-serif"> return self.sources[0].get_map(query)</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/source/wms.py", line 62, in get_map</font></div><div><font face="Tahoma, Verdana, sans-serif"> resp = self._get_map(query)</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/source/wms.py", line 81, in _get_map</font></div><div><font face="Tahoma, Verdana, sans-serif"> return self._get_transformed(query, format)</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/source/wms.py", line 124, in _get_transformed</font></div><div><font face="Tahoma, Verdana, sans-serif"> query.size, dst_bbox, self.image_opts)</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/image/transform.py", line 91, in transform</font></div><div><font face="Tahoma, Verdana, sans-serif"> result = self._transform(src_img, src_bbox, dst_size, dst_bbox, image_opts)</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/mapproxy/image/transform.py", line 156, in _transform</font></div><div><font face="Tahoma, Verdana, sans-serif"> image_filter[image_opts.resampling])</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/PIL/Image.py", line 1629, in transform</font></div><div><font face="Tahoma, Verdana, sans-serif"> im.__transformer(box, self, QUAD, quad, resample, fill)</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/PIL/Image.py", line 1674, in __transformer</font></div><div><font face="Tahoma, Verdana, sans-serif"> image.load()</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/PIL/ImageFile.py", line 212, in load</font></div><div><font face="Tahoma, Verdana, sans-serif"> s = read(self.decodermaxblock)</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/PIL/PngImagePlugin.py", line 401, in load_read</font></div><div><font face="Tahoma, Verdana, sans-serif"> cid, pos, len = self.png.read()</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/PIL/PngImagePlugin.py", line 93, in read</font></div><div><font face="Tahoma, Verdana, sans-serif"> len, cid = self.fp.get("!I4s")</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/PIL/ImageSupport2.py", line 105, in get</font></div><div><font face="Tahoma, Verdana, sans-serif"> return self.read(struct.calcsize(fmt)).unpack(fmt)</font></div>
<div><font face="Tahoma, Verdana, sans-serif"> File "/usr/local/lib/python2.7/dist-packages/PIL/ImageSupport2.py", line 76, in unpack</font></div><div><font face="Tahoma, Verdana, sans-serif"> raise ValueError(v)</font></div>
<div><font face="Tahoma, Verdana, sans-serif">ValueError: unpack requires a string argument of length 8</font></div></div><div style="font-family:Tahoma,Verdana,sans-serif;font-size:10pt;font-style:normal;font-variant:normal;font-weight:normal;line-height:normal">
<br></div><div style="font-family:Tahoma,Verdana,sans-serif;font-size:10pt;font-style:normal;font-variant:normal;font-weight:normal;line-height:normal">...but second request gets through.</div><div style="font-family:Tahoma,Verdana,sans-serif;font-size:10pt;font-style:normal;font-variant:normal;font-weight:normal;line-height:normal">
<br></div><div style="font-family:Tahoma,Verdana,sans-serif;font-size:10pt;font-style:normal;font-variant:normal;font-weight:normal;line-height:normal">This is source request for test2:</div><div><font face="Tahoma, Verdana, sans-serif"><a href="http://geoportal.cuzk.cz/WMS_ZM10_PUB/service.svc/get?styles=&format=image%2Fjpeg&height=1184&bbox=-742076.617816,-1045120.38486,-741052.456103,-1044098.3743&transparent=False&layers=GR_ZM10&service=WMS&width=1186&request=GetMap&srs=EPSG%3A5514&version=1.1.1" target="_blank">http://geoportal.cuzk.cz/WMS_ZM10_PUB/service.svc/get?styles=&format=image%2Fjpeg&height=1184&bbox=-742076.617816,-1045120.38486,-741052.456103,-1044098.3743&transparent=False&layers=GR_ZM10&service=WMS&width=1186&request=GetMap&srs=EPSG%3A5514&version=1.1.1</a></font></div>
<div><font face="Tahoma, Verdana, sans-serif"><br></font></div><div><font face="Tahoma, Verdana, sans-serif">Results are 256 color PNG in test1 (transformed looks not very well), and 16M color PNG in test2 (looks nice).</font></div>
<div><font face="Tahoma, Verdana, sans-serif"><br></font></div><div><font face="Tahoma, Verdana, sans-serif">Is there other way to force MapProxy to work always in 24 bit with PNG24 source?</font></div><div><font face="Tahoma, Verdana, sans-serif"><br>
</font></div><div><font face="Tahoma, Verdana, sans-serif">Martin</font></div>
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