[time-nuts] Lady Heather's Fat Client

[Bruce Griffiths]

For more detail see:
http://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA407319&Location=U2&doc=GetTRDoc.pdf 
<http://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA407319&Location=U2&doc=GetTRDoc.pdf>

Bruce

Bruce Griffiths wrote:
> More accurately (pun intended) the GPS receiver first calculates the 
> height above the ellipsoid that approximates the earth's surface and 
> then uses a geoid separation table to calculate the height above MSL.
> Due to storage constraints the geoid separation table may necessarily 
> be inaccurate.
>
> Bruce
>
> John Miles wrote:
>> That graphics library is 95% post-consumer fiber at this point. :(  It's
>> good for rapid development and porting work but as you can tell it's 
>> pretty
>> rough around the edges.
>>
>> Every time I run a survey on a Thunderbolt here, it seems to want to 
>> find
>> itself at the bottom of the lake.  Bruce pointed out in an email that 
>> what
>> GPS considers "altitude" isn't necessarily the same as what terrestrial
>> mapmakers mark as sea level, so maybe that's what's happening.
>>
>> -- john
>>
>>> -----Original Message-----
>>> From: Mike Naruta AA8K [mailto:aa8k at comcast.net]
>>> Sent: Wednesday, December 09, 2009 4:12 PM
>>> To: John Miles; time-nuts at febo.com
>>> Subject: Re: [time-nuts] Lady Heather's Fat Client
>>>
>>>
>>>
>>> Oh, I thought it was my PC.
>>> Neat John, we like recycled code.
>>>
>>> The KE5FX remote access is fun too, works well.
>>>
>>> I'm surprised that your antenna receives so well,
>>> being at -7.6 m.  Doesn't it get wet?
>>>
>>>
>>> (I know; I'm just trying to be funny)
>>>
>>>
>>> Mike - AA8K
>>>
>>>
>>>
>>> John Miles wrote:
>>>> Hi, Mike --
>>>>
>>>> Correct, that's not a bug, and it won't change unless/until the
>>> program is
>>>> rewritten with a new graphics library.
>>>>
>>>> In fullscreen mode there's no window border, so the 1024x768
>>> display surface
>>>> can accommodate the 1024x768 client area.  When you hit F11 to
>>> go back to
>>>> windowed mode on a machine with a 1024x768 desktop, there's no
>>> room for the
>>>> window border and caption bar that surrounds the client area, so the
>>>> graphics system has to downsample the client area to fit.
>>>>
>>>> Back when the graphics library was written, in an era when 33
>>> MHz processors
>>>> were still common, it was much faster to downsample by factors
>>> of two than
>>>> to incrementally shrink the image to fit.  So you will always
>>> get the tiny,
>>>> cramped display window in cases where you request a resolution in 
>>>> window
>>>> mode that can't fit on the desktop.
>>>>
>>>> -- john, KE5FX
>>>>
>>
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>
>
>
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