[ncl-talk] questions about LambertConformal map projection

[Rick Brownrigg]

Hi,

Its going to be difficult without knowing these values exactly. A
reasonable guess on the central meridian might be the center of the area of
interest, but again its just a guess. The parallels -- who knows?  However,
if you just pick values or let defaults apply, the worst that should happen
is a distorted map. You might play around with values until things look
aesthetic.

Rick

On Mon, Aug 21, 2017 at 6:09 AM, 李雯雯 <jodie_megan at icloud.com> wrote:

> Hello !
>       I have a matrix which represents a certain quantity ,each point in
> the matrix has the corresponding latitude and longitude.The longitude of
> each column in the matrix is not necessarily equal,the latitude of each
> line is also not necessarily equal.The distance between any grid is 2
> kilometers.I know the map projection is LambertConformal,but I do not know
> the res at mpLambertParallel1F, res at mpLambertParallel2F
> <res at mpLambertParallel2F>,  res at mpLambertMeridianF .Is there any way to
> calculate the there values?
> I appreciate your help.
>
> Cheers
> Sharon
>
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