[mapserver-users] outputformat problem in mapfile

[Rahkonen Jukka]

Hi,
 
I am serving mostly aerial images and I have not bothered to learn a lot about outputformats.  We are using standard jpeg or 24-bit png formats.  Rendering from vector data would be much more challenging, especially if band width should be kept low but quality high.  This is giving best quality and most network traffic with aerials:
 
 OUTPUTFORMAT
    NAME "png24"
    MIMETYPE "image/png24"
    DRIVER "GD/PNG"
    EXTENSION "png"
    IMAGEMODE RGB
    TRANSPARENT FALSE
  END
 
-Jukka-


________________________________

	Lähettäjä: 王连波 [mailto:happyforev1 at gmail.com] 
	Lähetetty: 17. marraskuuta 2009 11:07
	Vastaanottaja: Rahkonen Jukka
	Kopio: mapserver-users
	Aihe: Re: [mapserver-users] outputformat problem in mapfile
	
	
	Hi, Jukka
	Thank you for your reply, first.
	However, if I use other format, how can I make the displayed picture clearer, is not there a win-win way ?
	
	
	On Tue, Nov 17, 2009 at 4:39 PM, Rahkonen Jukka <Jukka.Rahkonen at mmmtike.fi> wrote:
	

		Hi,
		 
		Jpeg problem is due to format itself, jpeg cannot be transparent so it will not work in the way you want.
		 
		-Jukka Rahkonen-


________________________________

			Lähettäjä: mapserver-users-bounces at lists.osgeo.org [mailto:mapserver-users-bounces at lists.osgeo.org] Puolesta ???
			Lähetetty: 17. marraskuuta 2009 10:15
			Vastaanottaja: mapserver-users
			Aihe: [mapserver-users] outputformat problem in mapfile
			
			
			hello all,
			I want to display a raster JPEG picture (about 100M) in ka-map through mapserver. However, when I set the outputformat to PNG or GIF in the mapfile, it looks ugly when zoomed out. It is a little better to use JPEG, although it is clear as the origin picture only being zoomed in enough. If I use JPEG as the output format, there is another problem ---only the layer above others can be displayed (I want to display all chosen layers). Any body can help me? Some codes about the raster layer in my mapfile are as following:
			
			IMAGETYPE jpeg
			OUTPUTFORMAT
			NAME jpeg
			DRIVER "GD/JPEG"
			MIMETYPE "image/jpeg"
			IMAGEMODE RGBA
			EXTENSION "jpg"
			TRANSPARENT on
			FORMATOPTION QUALITY=100      #value=0-100
			END
			layer
			name test
			type raster
			status on
			data "data/20km.jpg"
			class
			name "outline"
			outlinecolor  255 0 0
			end
			end
			end
			BTW, I can not set class name as Chinese characters, otherwise it will become disorderly codes in ka-map. Any suggestion are welcome. My operating system is FreeBSD7.1Release, my locale is UTF-8.
			
			
			
			
			
			-- 
			天道酬勤
			




	-- 
	天道酬勤
	

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