[Xastir] USrad.geo and transparent background

[J. Lance Cotton]

Stephen West-Fisher wrote:
> Stephen West-Fisher wrote:
> 
>> This file uses 
>> http://mesonet.tamu.edu/gemdata/images/radar/01_USrad.png, which I get 
>> if I enter that into my browser.
>>
>> As far as the other message, The last line in the geo file is 
>> "TRANSPARENT #ffff". I'm going to play around with this stuff some 
>> more....
>>
> And therein lies the problem, README.MAPS states it should be 
> "TRANSPARENT 0xfff". Funny thing, that works. So the link to the 
> USrad.geo file goes to a file that doesn't work correctly if you want a 
> transparent map.
> 

Yeah,I made an oops on my suggestion... I just checked the sources and it 
should be 0x[color in hex] instead of the "#" symbol.

I'd always assumed that the 0x?????? stuff for colors was supposed to be 
6-digits (48 bits), with 16 bits for each color in RGB. I don't know what 
0xfff or 0xffff do, but I would assume they would be padded to be equivalent 
to 0x000fff or 0x00ffff, which are different colors (teal-ish?)


I just tried both the .gif and .png versions of the
http://mesonet.tamu.edu/gemdata/images/radar/01_USrad.png
image with the following line in USrad.geo:

TRANSPARENT 0xFFFFFF

and it works fine.
73,
Lance
-- 
J. Lance Cotton, KJ5O
joe at lightningflash.net
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