20030418: land/sea boundaries (cont.)

>From: Wahner Paul Contr CSR4500 <address@hidden>
>Organization: Patrick Air Force Base
>Keywords: 200304181605.h3IG5D7U027249 McIDAS topography

Hi Paul,

Sorry I didn't respond to your request last week, but I figured it
would be better to wait for Rick Korhs of SSEC to chime in.

>I would definitely be interested in illustrative examples. I'd like have a
>hires version of the topo map for the southeast US.

Were Rick's comments sufficient for your purposes (they sure looked like
they were)?  If not, I can add more detail

For reference, the Unidata distribution of McIDAS comes with a command
called MAKEAREA.  It is that command that I use to transform topography
data into an AREA file.  It must be akin to the MAKETOPO command that
Rick talked about in his email.  The procedure I follow was virtually
identical to Ricks:

1) create an AREA from topo data
2) add navigation to that AREA file using MAKNAV (the Unidata version of
   this command allows one to add navigation to Polar Orbiter data also)
3) use IMGFILT, etc. to combine imagery

>Thanks!

No worries.

Tom

>Paul
>
>-----Original Message-----
>From: Tom Yoksas [mailto:address@hidden]
>Sent: Friday, April 18, 2003 10:50 AM
>To: address@hidden
>Cc: address@hidden; address@hidden
>Subject: 20030418: land/sea boundaries 
>
>
>>From:  Robert Mullenax <address@hidden>
>>Organization:  Universial Weather
>>Keywords:  200304181341.h3IDfZ7U029290 McIDAS topo image combinations
>
>Travis, et. al.,
>
>>The only problem with that is that the topo file has a very coarse
>>resolution along the coastline,
>>If you zoom in to any great extent, the coastline looks very blocky.
>
>Robert is correct, but you can get high resolution topography datasets
>which can be turned into images and used in the exact same way that you
>would use the topo images in XRD (and are also in the Unidata McIDAS
>distribution).  I'm sure that Robert or I could provide illustrative
>examples if you are interested.
>
>As to Dave's comment on Rick Khors being an expert in this area: he _IS_
>the master! :-)
>
>Cheers,
>
>Tom
>
>>-----Original Message-----
>>From: Dave Santek [mailto:address@hidden]
>>Sent: Friday, April 18, 2003 8:28 AM
>>To: address@hidden
>>Subject: Re: land/sea boundaries
>>
>>Travis,
>>
>>You'll have to do some image combinations with the topography area file
>that
>>is included with -XRD. Rick Kohrs is our resident expert on this, but he's
>>on vacation this week.
>>
>>dave
>>
>>Travis Martin wrote:
>>
>>Hello,
>>I'm trying to color the boundaries of land and sea in some maps I'm
>>creating.  Using the IMGDISP command I create a composite radar image of
>>say....the bay area and then apply a map to this image using MAP X 7.  I
>>would like to have the ocean blue and the land brown with the radar image
>>overlaid.    Since the current color of land and sea are both black, I'm
>not
>>sure how I can change color ranges to accomplish this.  Any ideas?  I think
>>I've seen this done on a few sites here and there, but don't have the code.
>>Thanks for any help you can give!
>>
>>Travis Martin
>>Software Engineer
>>Weathernews Americas Inc.
>>
>>149 New Montgomery St.
>>San Francisco, CA  94105
>>415-848-5261 (Office)
>>
>>415-310-5719 (Mobile)
>>415-848-5201 (Fax)
>
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