Re: [mapserver-users] Mapcache support for multiple format types

[thomas bonfort]

Tom,
The client supplied format is mostly ignored by mapcache, so you should not
have issues with your existing services. The only case where it is not
ignored (and is irrelevant with the current issue of multiple formats per
tileset) is if you have set  inside
your wms service definition, *and* the current request could not be
processed by directly returning a cached tile (i.e. assembling tiles was
requested)

--
thomas

On Wed, Nov 23, 2016 at 9:41 AM tellett  wrote:

> I can't really think of a compelling usecase Thomas to be honest, for us it
> was more an ease of use issue given our existing services :) However, I
> hadn't been aware of the mixed format possibilities with mapcache (should
> of
> read all documentation of course instead of just the oncfiguration file
> page!!), that will probably solve our issues nicely meaning we can store 1
> tileset and reduce network bandwidth issues whilst still retaining the
> important transparency. Thanks for the help!
>
> Tom
>
>
>
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Re: [mapserver-users] Mapcache support for multiple format types

[tellett]

I can't really think of a compelling usecase Thomas to be honest, for us it
was more an ease of use issue given our existing services :) However, I
hadn't been aware of the mixed format possibilities with mapcache (should of
read all documentation of course instead of just the oncfiguration file
page!!), that will probably solve our issues nicely meaning we can store 1
tileset and reduce network bandwidth issues whilst still retaining the
important transparency. Thanks for the help!

Tom



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Re: [mapserver-users] Mapcache support for multiple format types

[Cechini, Matthew F. (GSFC-423.0)[Science Systems & Applications, Inc.]]

A compelling situation could be a layer that has uses cases where you want it 
have transparency or not, making it an “overlay” or “base layer” respectively.

Though, if you’re serving it as 24+1bit PNG with transparency, you’re gonna 
lose quality in JPEG, so you would probably want to return a 24bit PNG.  And at 
that point, you would have to have separate layers because the mime type is the 
same.

As an aside, a member of our team did work on a JPNG approach where tiles that 
require transparency are PNG and those that do not are JPEG.  The devil is in 
the details of quality mapping with that though.

Matt
.
Matthew Cechini
Contractor, Science Systems and Applications, Inc.
NASA GIBS Systems/Software Engineer
410.205.6272

From: mapserver-users 
<mapserver-users-boun...@lists.osgeo.org<mailto:mapserver-users-boun...@lists.osgeo.org>>
 on behalf of thomas bonfort 
<thomas.bonf...@gmail.com<mailto:thomas.bonf...@gmail.com>>
Date: Tuesday, November 22, 2016 at 1:28 PM
To: tellett <thomas.ell...@statkart.no<mailto:thomas.ell...@statkart.no>>, 
"mapserver-users@lists.osgeo.org<mailto:mapserver-users@lists.osgeo.org>" 
<mapserver-users@lists.osgeo.org<mailto:mapserver-users@lists.osgeo.org>>
Subject: Re: [mapserver-users] Mapcache support for multiple format types

Hi Tom,
My question wasn't clear, or you did not answer my question ;-)
I was looking for a compelling *use-case* where the solution requires a tile 
server to support both jpeg and png for a given tileset. My stance for mapcache 
is that the data producer (i.e. you as the mapcache administrator) knows his 
data and therefore which format (*singular*) is best suited for a given 
tileset. I'd be happy to revisit my judgment if presented with a scenario where 
more than one format per tileset is actually needed.

Cheers,
Thomas

On Tue, Nov 22, 2016 at 12:19 PM tellett 
<thomas.ell...@statkart.no<mailto:thomas.ell...@statkart.no>> wrote:
Hi Thomas,

Really, its just so that we don't need to have 2 separate layers in the
service for each format type. The norwegian mapping authority has about 25
cache 'services' and so its a bit messy in the config and WMTS capabilities
file if we have to have 50 tilesets instead of 25.

Its no problem technically having 2 tilesets called 'topo2_png' and
'topo2_jpeg' for example (they would have the same title and abstract), it
just would have been preferable for us to have 1 layer support multiple
formats so that the client could call the same service/layer/tileset and
choose the format type through the kvp parameter. Not a show-stopper for us,
we just have to change our way of thinking :)

Tom



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Re: [mapserver-users] Mapcache support for multiple format types

[thomas bonfort]

Hi Tom,
My question wasn't clear, or you did not answer my question ;-)
I was looking for a compelling *use-case* where the solution requires a
tile server to support both jpeg and png for a given tileset. My stance for
mapcache is that the data producer (i.e. you as the mapcache administrator)
knows his data and therefore which format (*singular*) is best suited for a
given tileset. I'd be happy to revisit my judgment if presented with a
scenario where more than one format per tileset is actually needed.

Cheers,
Thomas

On Tue, Nov 22, 2016 at 12:19 PM tellett  wrote:

Hi Thomas,

Really, its just so that we don't need to have 2 separate layers in the
service for each format type. The norwegian mapping authority has about 25
cache 'services' and so its a bit messy in the config and WMTS capabilities
file if we have to have 50 tilesets instead of 25.

Its no problem technically having 2 tilesets called 'topo2_png' and
'topo2_jpeg' for example (they would have the same title and abstract), it
just would have been preferable for us to have 1 layer support multiple
formats so that the client could call the same service/layer/tileset and
choose the format type through the kvp parameter. Not a show-stopper for us,
we just have to change our way of thinking :)

Tom



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Re: [mapserver-users] Mapcache support for multiple format types

[tellett]

Hi Thomas,

Really, its just so that we don't need to have 2 separate layers in the
service for each format type. The norwegian mapping authority has about 25
cache 'services' and so its a bit messy in the config and WMTS capabilities
file if we have to have 50 tilesets instead of 25. 

Its no problem technically having 2 tilesets called 'topo2_png' and
'topo2_jpeg' for example (they would have the same title and abstract), it
just would have been preferable for us to have 1 layer support multiple
formats so that the client could call the same service/layer/tileset and
choose the format type through the kvp parameter. Not a show-stopper for us,
we just have to change our way of thinking :)

Tom



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Re: [mapserver-users] Mapcache support for multiple format types

[thomas bonfort]

There is no support for multiple formats per tileset (yet?), as I could not
imagine a compelling use-case that would warrant it. Would you care to
explain why this would be needed?

--
thomas


On Fri, Nov 18, 2016 at 3:41 PM tellett  wrote:

> Hi all,
>
> I'm wondering if theres any other way in mapcache to support multiple
> formats (png and jpeg for example) than to create a new tileset?
>
> For example if I have a wms 'source' called topo2_wms (that supports png
> and
> jpeg), and a tileset called topo2cache, whats the best ways to create tiles
> in both png and jpeg? Is it really necessary to create 2 tilesets, 1 called
> topo2cache_png and one topo2cache_jpeg?
>
>
>
> --
> View this message in context:
> http://osgeo-org.1560.x6.nabble.com/Mapcache-support-for-multiple-format-types-tp5296486.html
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[mapserver-users] Mapcache support for multiple format types

[tellett]

Hi all,

I'm wondering if theres any other way in mapcache to support multiple
formats (png and jpeg for example) than to create a new tileset?

For example if I have a wms 'source' called topo2_wms (that supports png and
jpeg), and a tileset called topo2cache, whats the best ways to create tiles
in both png and jpeg? Is it really necessary to create 2 tilesets, 1 called
topo2cache_png and one topo2cache_jpeg?



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