[Xastir] NWS maps and geo files

[Richard Polivka, N6NKO]

I believe that all of the NWS NEXRAD sites have been processed and put 
out there.

The tiepoints had to be calculated from the .gfw file for the particular 
site.

I believe that there was a thread some time ago discussing how to 
calculate the tiepoints. It should be in the listserver history files.

73 from 807,

Richard, N6NKO


Bennett, Joe wrote:
> I have a somewhat related question that I have not been able to find 
> the answer to to date... I have similar .geo files for the NWS radar 
> images that I received from another ham quite some time ago... I would 
> like to add another radar, have the URL, but not sure how to identify 
> the tie points... Any idea where to get that data?
>
>
>
> -Joe
> KA3NAM
>
>
>
>
>
> Richard Polivka, N6NKO wrote:
>> Scott,
>>
>> You may be looking at the wrong file on the server.
>>
>> Here is the .geo that I have for that site:
>>
>> #[JGX_N0R - produced from .gfw file by K1KWP - 2006-07-18]
>> URL http://www.srh.noaa.gov/ridge/RadarImg/N0R/JGX_N0R_0.gif
>> TIEPOINT 0 0 -85.9106 35.0210
>> TIEPOINT 600 550 -80.7828 30.3205
>> IMAGESIZE 600 550
>> REFRESH 720
>>
>> Change this line "URL 
>> http://www.srh.noaa.gov/ridge/RadarImg/N0R/JGX_N0R_0.gif" to read
>> "URL http://radar.weather.gov/ridge/RadarImg/N0R/JGX_N0R_0.gif". This 
>> directs xastir to get the picture from the load
>> sharing server.
>>
>> Good luck,
>>
>> Richard, N6NKO
>>
>>
>> Scott Nolde N4CI wrote:
>>> I'm having a little difficulty viewing NWS maps.  I've created a .geo
>>> file in my maps/Online directory which looks like this:
>>> URL     http://www.srh.noaa.gov/ridge/RadarImg/N0R/JGX_N0R_0.gif
>>> TIEPOINT        1       1       -85.910617      35.020961
>>> TIEPOINT        600     550     -80.782832      30.320491
>>> IMAGESIZE 600 550
>>> REFRESH 300
>>> TRANSPARENT 0x000000000
>>> #OPTIONAL PARAMS
>>> GAMMA 2
>>> #CONTRAST 0.5
>>> #NEGATE
>>> #EQUALIZE
>>> #NORMALIZE
>>> #LEVEL
>>> #eof
>>>
>>> It seems I'm missing something fundamental when I try to view the map.
>>>  It seems xastir doesn't fetch the map and it won't display the gif in
>>> the same directory.  My user running xastir has read+write permissions
>>> to the online directory, also.
>>>
>>> Can anyone point to a how-to or provide some assistance in 
>>> troubleshooting this?
>>>
>>> Thanks much,
>>> Scott, N4CI
>>> _______________________________________________
>>> Xastir mailing list
>>> Xastir at xastir.org
>>> http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir
>>>
>>>   
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