[mapserver-dev] WMS 1.3 GetFeatureInfo

Daniel Morissette dmorissette at mapgears.com
Wed Mar 9 08:43:26 EST 2011

On 11-03-08 06:35 PM, Bart van den Eijnden wrote:
> Hi devs,
> how was WMS GetFeatureInfo implemented in Mapserver for WMS 1.3?
> Does I and J follow the axis order like it says in the spec?


I'm not convinced that I,J should be swapped.... have a look at 6.7.2 
... it sounds like in general 'I' should be east to west, and 'J' north 
to south. There is no mention of those conventions changing based on the 
CRS axis orientation.

Are we mixing Map CS and CRS here? What made you think that I,J need to 
be swapped? Do you have pointers to complementary info about this?

Daniel Morissette
Provider of Professional MapServer Support since 2000

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