I got the NCAR Yellowstone/ geyser analysis machine people to install IDV
there. That uses turboVNC if I recall. But they didnt teach me the howto
issues, they just made it work.
In case anyone wants use details just ask.
Brian Mapes
This message was typed on a cell phone, please forgive its terseness and any
errors.
On Aug 28, 2013, at 4:07 PM, "Tyle, Kevin R" <ktyle@xxxxxxxxxx> wrote:
> Hi Don, Brendon, et al.:
>
> Re: virtual X server and IDV:
>
> I've been investigating the TurboVNC/VirtualGL packages to see if I can get
> IDV to work properly on a server that does not run a real X server ... still
> in the preliminary stages. If anyone else has tried, though, do let us know!
>
> --Kevin
>
> _____________________________________________
> Kevin Tyle, Systems Administrator
> Dept. of Atmospheric & Environmental Sciences
> University at Albany
> Earth Science 235, 1400 Washington Avenue
> Albany, NY 12222
> Email: ktyle@xxxxxxxxxx
> Phone: 518-442-4578
> _____________________________________________
>
>
> -----Original Message-----
> From: idvusers-bounces@xxxxxxxxxxxxxxxx
> [mailto:idvusers-bounces@xxxxxxxxxxxxxxxx] On Behalf Of Don Murray
> Sent: Wednesday, August 28, 2013 3:46 PM
> To: idvusers@xxxxxxxxxxxxxxxx
> Subject: Re: [idvusers] ISL script examples please? (and dreams)
>
> Thanks for the clarifications, Brendon! Nice work!
>
> Don
>
> On 8/28/13 1:44 PM, Brendon Hoch wrote:
>> Don Murray wrote:
>>> Hi Brendon-
>>>
>>> Thanks for this information. Hopefully it will help others along. A
>>> couple of questions/comments:
>>>
>>> - did you have to install the old Java 3D library to get this to work
>>> with Xvfb? Kevin Tyle has been looking at this for supporting the
>>> IDV image generation in RAMADDA, so if you've found a solution
>>> without that, we should chat offline.
>>
>> I believe I used the "legacy" Java 3D library during the IDV install
>> process as recommended by previous users. Nothing else special...
>>
>>> - You could do the annotation in ISL as well - it supports image and
>>> text overlays with the <overlay> tag. You can control the font and
>>> background color of the text. Is there a reason you are using
>>> convert instead?
>>
>> We use convert to caption much of our other image generation from
>> Gempak, so it was easier to recycle existing code.
>>
>>> - you can also create animated gifs with convert using the -loop option .
>>
>> Generating gifs (or animated gifs) didn't work with idv + Xvfb, only png .
>>
>> Another issue was a limitation based on our mapwall configuration.
>> Previously, we used Imagemagick's "display" command for showing
>> imagery on a screen with the "-window root" option (clean, full screen
>> image without window borders). This works fine with older flavors of
>> Linux that treat a quad-head graphics card with multiple monitors as
>> separate screens (0.0, 0.1, 0.2, etc). Newer versions of Linux treat
>> multiple monitors as one big screen, so an alternative was needed.
>> I'm now using "feh" to display individual images in a multi-screen
>> environment. It allows you to set exactly on your "screen" where you
>> want the image by specifying a size & offset using the -g option.
>> Based on our setup, feh worked better with individual gifs than animated
>> gifs.
>>
>> Cheers,
>> Brendon
>>>
>>> As Jeff McWhirter used to say - ISL is the most fully documented code
>>> in IDV. Glad you found it worked for you.
>>>
>>> Don
>>>
>>>
>>>
>>> On 8/28/13 6:31 AM, Brendon Hoch wrote:
>>>> Brian,
>>>>
>>>> I've attached an isl script, shell script, and bundle that I've been
>>>> using for the past few months to generate a real time satellite
>>>> imagery loop for our mapwall display. Some notes:
>>>>
>>>> - We're using Centos 5.8 64 bit with plans to move to CentOS 6.x in
>>>> the near future.
>>>> - Script is scheduled for generation every 30 minutes at :14 & :44
>>>> to give enough time for satellite images to populate on ADDE servers.
>>>> - We're using stock Xvfb for a display buffer. Xvfb runs all the
>>>> time, you might need to create a startup script, which you should be
>>>> able to find examples of by searching the web based on your linux flavor.
>>>> - Historically, 64 bit IDV has had issues generating gifs with Xvfb.
>>>> But, it seemed to work ok for generating png files. So, I convert
>>>> from png to gif using Imagemagick's convert command. I also use
>>>> Imagemagick to add nice labels to the image. I use gifsicle to
>>>> generate an animated gif.
>>>> - I haven't tried generating .mov files because our mapwall display
>>>> doesn't use them, but the process should be similar. The ISL
>>>> documentation is actually quite good (the hardest part is finding
>>>> it!)
>>>>
>>>> Hope this helps,
>>>> Brendon
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> idvusers mailing list
>>>> idvusers@xxxxxxxxxxxxxxxx
>>>> For list information, to unsubscribe, visit:
>>>> http://www.unidata.ucar.edu/mailing_lists/
>
> --
> Don Murray
> NOAA/ESRL/PSD and CIRES
> 303-497-3596
> http://www.esrl.noaa.gov/psd/people/don.murray/
>
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> For list information, to unsubscribe, visit:
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>
>
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