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HomeHomeDiscussionsDiscussionsiFly Wish-ListiFly Wish-ListWeather animation and "staleness" indication?Weather animation and "staleness" indication?
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11/9/2011 9:12 AM
 

Yesterday, I had the first opportunity to fly with weather in the vicinity, and a couple of questions occurred to me during the flight:

1) Does the iFly have a way to alert the user that stale radar data is being presented? (It probably should.)

I was flying practice approaches yesterday, so stayed in the same geographic area for about 30-45 minutes. I began to suspect the radar image was not updating because I kept seeing a distinctively-shaped echo on my iFly that wasn't moving, and it did not appear to correspond to my view out the windows. It's possible that I got high enough during my initial climbout to get a "sniff" of weather data, but then was kept low enough during my approach vectoring that I didn't get any updates. A similar situation could occur as I return to my home field from the west, as I am typically stepped down from my cruise altitude to ~1500' for the Class B transition across Houston. The last 50 miles or so might be at that low altitude. If I've been getting good radar data, but then get low and stop receiving them, I want to know about it.

2) Can the radar imagery be animated?

There are probably practical reasons why this is not possible, but it would be very high on my wish list if it is. Understanding what direction a cell is moving, and whether it's building or dying, could be very useful in the cockpit. I realize that if I include the radar in my scan, I should be able to gather that information over time, but if I suddenly don't like what I see happening in front of me, where I've been focusing my attention, and now suddenly need to consider alternates that might have been off the screen or otherwise out of my awareness, having a picture of the last 15-30 minutes of echoes could be incredibly helpful.

Thanks for your consideration! Even if these ideas are ultimately rejected, I really appreciate how receptive you guys are to listening to your customers. Makes me feel like I'm part of the team! (Don't worry, I'm not expecting a trophy for "participation" or anyhting... :) )

Jim

 
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11/10/2011 4:20 PM
 

The nexrad image should update every 5 minutes. As the image is only a snapshot of local weather (within a few hundred miles), a bounding circle is drawn around the image. At the top of this circle is the age of the image; you should definitely pay attention to this. If the image is not updated for 15 minutes it should disappear; I'll need to double-test this functionality as what you are describing indicates this might not be happening.

You can animate the image; touch & hold on the screen to pop the context menu (or touch once to get the weather report form, then touch the "Menu" button), then select "Animate Nexrad". It will iterate through the prior 6 images (which is 30 minutes) several times. We don't leave this on as the animation is very processor intensive, but our next version may allow this to be turned on all the time.

Thanks,

Walter


Walter Boyd
President, Adventure Pilot
 
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11/12/2011 9:28 AM
 

Thank you for the information, Walter. Of course now that you mention it I remember seeing the "Animate Nexrad" option in the menu, but the Wx feature is new enough to me that I forgot that in the heat of battle. I also was pretty tightly zoomed in, so I didn't ever see the "whole picture"; now that I know about the boundary and timing info, I'll make sure to look for that the next time I have an opportunity.

Thanks again!

Jim

 
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11/13/2011 8:25 PM
 

I flew from Houston to Shreveport and back this weekend, and used the weather pages a bit today to peek at the clouds/showers around Houston as I approached. By zooming out, I found the coverage boundary drawn around Houston with the time stamp at the top. I don't remember now exactly how it was obscured, but I was unable to easily read the Zulu timestamp on the image--it was underneath another feature on the page. I try to minimize how much heads-down fiddling I do with my avionics, so I didn't focus on or try to resolve that issue...maybe it was trivial, I dunno.

But I was able to clearly read the "staleness" indication: It varied between !something like -360 and -405 minutes, but was usually in the high -300's.

The number periodically dropped as I flew, though, which meant that either Houston was reularly pushing out ~6-hour old Nexrad imagery, or else perhaps there was a GMT/CST error (since CST is GMT - 0600, or GMT - 360 minutes).

Do I need to adjust a time zone setting in the iFly somewhere to correct this error?

 
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11/14/2011 4:59 PM
 

Cobra, I'm going to log this as a bug. It should be determining the time based on zulu regardless of your local setting. I'll dig into that.

Walter


Walter Boyd
President, Adventure Pilot
 
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HomeHomeDiscussionsDiscussionsiFly Wish-ListiFly Wish-ListWeather animation and "staleness" indication?Weather animation and "staleness" indication?