Re: map toolbox: setting map boundaries

Timothy Hilton wrote:

Hello,

I am at wit's end trying to get the map toolbox to display my map
with the correct boundaries. I want to plot some data on a region
that encompasses the area bounded roughly by the Rocky Mts, Hudson
Bay, the Atlantic Ocean, and the Gulf of Mexico. My data is given
in
Lambert Azimuthal Equal Area coordinates, so I convert to lat/lon
using minvtran. I am trying to set my map boundaries using
MapLatLimit, MapLonLimit, etc., but these parameters don't do what
my
interpretation of the documention leads me to believe they
should...

The piece of code below illustrates my problem. I would have
thought this would restrict the plot to the area bounded by 10N,
11N
latitude and 70W, 120W longitude. Instead I get the area in
between
lakes Michigan, Superior, Winnipeg, and Winnipegosis, all well
north
of 11N latitude.

Can anyone tell me what I am doing wrong?

Thanks for any help,
Tim

Strange. I've been playing around with your example, and depending
on how I define the frame limits (using an mstruct, by param-val
pairs, before and/or after plotting data,etc), I'm seeing lots of
different results, many of which seem very wrong.

First, are you sure about the limits you gave here? 10 to 11 N does
not in any way encompass the Rocky Mt, Hudson Bay, or Atlantic. Your
given region is a very thin strip that's going to be hard to see in
any projection.

Second, do you need to use the Lambert Azimuthal Equal-Area
Projection? It's useful if you want to see both poles, but in the
region you described, other projections should be okay. The problem
seems to be limited to this particular projection; I'm able to set
the frame limits without problem using several other projections.
.