Ok to answer my own question, yes you need <http> section like this for
assembly to work:
<source name="D" type="wms">
<getmap>
<params>
<FORMAT>image/png></FORMAT>
<LAYERS>A,B,C</LAYERS>
</params>
</getmap>
<http>
<url>http://localhost/mapcache</url>
</http>
</source>
And you don't need a <tileset> defined for it to work as it reads data
from the existing tilesets and assembles the new image. I suppose if you
wanted you could also define a new tileset so it would cache the
assembled images, but I'm not sure that that is needed except possibly
in very high demand situations. But this is just my surmise.
Thanks,
-Steve
On 2/13/2020 1:46 PM, Stephen Woodbridge wrote:
On 2/13/2020 12:36 PM, jbo-ads wrote:
Hi Steve,
Yes, this part of the doc should be improved... A more helpful one is
<https://mapserver.org/mapcache/dimensions.html#tile-assembly-policies>
but it is relative only to second level dimensions.
Assembling several layers can be performed with a WMS request using
"...&LAYERS=A,B,C&...". Then to create a new layer, you just need to
define a WMS source using that WMS pattern.
Jérome,
Thanks that seems simple enough. A couple of questions:
<source name="D" type="wms">
<getmap>
<params>
<FORMAT>image/png></FORMAT>
<LAYERS>A,B,C</LAYERS>
</params>
</getmap>
<http>
?????
</http>
</source>
<tileset name="D">
<source>D</source>
...
</tileset>
Does this look right?
Should I have an <http> section and what should be in that if anything
for assembly of existing tilesets?
Thanks,
-Steve
Jérome.
Le 13/02/2020 à 17:24, Stephen Woodbridge a écrit :
Hi all,
I have three existing layers in my mapcache.xml and I need to create
a new layer that assembles this three layers into a single layer.
There is a section in the mapcache documentation
https://mapserver.org/mapcache/tile_assembling.html but it is not
very helpful ;)
Can anyone help with with this problem?
Say I have existing tilesets "A", "B", "C" how would I create a
tileset "D" where it stacks A, B, and C like:
C
B
A
Thanks,
-Steve W
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