On Feb 8, 2011, at 4:09 PM, ext qazi iqbal wrote:
> In my mapserver setup, I am testing the layers, I get the layers starting
> pixelated and then keeps on refreshing till it clears out. Below is a similar
> example from the mapserver tutorial. It also behaves same.
> http://mapserver.org/tutorial/example1-6.html#example1-6
This is called 'interlacing', and it is a common technique to speed the
amount of time before something is displayed to the user (delivering a
lower quality copy first, then updating as more data is delivered).
>From the MapServer docs:
FORMATOPTION [option]
Provides a driver or format specific option. Zero or more FORMATOPTION
statement may be present within a OUTPUTFORMAT declaration. (optional)
• GD/JPEG: The “QUALITY=n” option may be used to set the quality of
jpeg produced (value from 0-100).
• GD/PNG: The “INTERLACE=[ON/OFF]” option may be used to turn
interlacing on or off.
• GD/GIF: The “INTERLACE=[ON/OFF]” option may be used to turn
interlacing on or off.
-- http://mapserver.org/mapfile/outputformat.html
> Does anyone know how to deal with this issue.
> Thanks
> Qazi
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