[OSM-newbies] Exporting scaled images

[Bill Ricker]

On Thu, Apr 1, 2010 at 6:17 AM, Firmin,Mark [Ontario]
<Mark.Firmin at ec.gc.ca>wrote:

>  I do work for EC, as a meteorologist
>
Cool.  I tinker with some NWS data down here in the states, and volunteer
with SKYWARN so see the NWS BOX & GYX folks periodically. Our Skywarn group
has our own linux port of the wsr88d workstation taking the
free-to-nonprofit live feed so we can plot & zoom separately. I've tried
plotting cell tracks with [MAVT] flags on a map to compare against damage
locations ... need to try that with OSM as basemap.


> and I've been busy all night turning up the heat.
>
Ha Ha ! Joyeux Poison d'Avril

I've tried to use* nik2img*, but I'm having similar problems when trying to
> make the bounding box the exact edge of the image.  I am trying to create
> Georeferenced tiff's for some Radar overlay's and I can't get the image
> scale correct.  All of my images are offset when I convert them to tiff's
> and add the georefference tags.  The images I've created are often a subset
> of the bounding box I have defined.  I think ideally, the projection I
> should be using is UTM, but it seems to be the most difficult.
>
Speaking generally, alignment will  be very projection sensitive. Another
question is if region is big enough that convergence will warp a bounding
box in degree coords, and if that with tools & projection will expand output
beyond what you expect. I would suggest temporarily adding explicit grid
points into the dataset to see what's where in the output.

BOX and MQE have an annual conference, when you get this working, you should
come present it!
www.s*neweather*conf.org

I need to look at *nik2img, *sounds useful *
*


-- 
Bill
n1vux at arrl.net bill.n1vux at gmail.com
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