Re: Projection map ratio problem

Hi Raj,

What projection were you using to run these tests? I would expect them
to be different for different projections, and for different latitudes
within the same projection. This is affected by the degree/pixel ratio
characteristic of a projection, which is likely variable in most cases,
depending on latitude. Equal Arc projections (constant degree/pixel
ratios) should be OK, though, like the LLXY projection and the CADRG
projection within the same zone.

- Don

rs@syncline.com wrote:
>
> I've been doing some tests, and it seems that the ratio
> of the MapBean's screen width and height (r) is different than
> the ratio of the MapBean's geographic width and height (geor).
> See the results of a few extents below. Can anyone explain
> what may be happening here?
>
> minx -130.5 -84.2403 -85.2855
> maxx 131.0625 -75.2403 -74.1951
> miny -78.062 29.31935 28.64211
> maxy 78.06198 36.77261 37.37486
> w 465 465 573
> h 460 460 539
> gr 1.675351 1.207526 1.26997
> r 1.01087 1.01087 1.06308
>
> thanks,
> Raj
>
> --
> Raj Singh, Syncline
> rs@syncline.com
> +1(617)986-1000
> MapCiti.com...it's your town on the web
>
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