On Feb 18, 2013, at 9:43 AM, [email protected] wrote:
> very very nice example.
Thanks. As you can guess, I'm trying to get all the kinks worked out before I
embed this in the SAGEmath server package. Because the computational load on
these severs can be high (meaning they can respond slowly), I intend to avoid
server-side help if at all possible.
> OK, so those are PNGJ format files, which are
> binary. What are you using for your server piece for that? MSIE also
> cannot read binary files that way. Oh, here it is:
I generate them using headless Jmol on the server. The PNGJ files are for the
static display of the 3D graphs. Thus they can be directly downloaded and
opened in Jmol.
>
> [09:31:55.530] ({color:"black", width:300, height:300,
> addSelectionOptions:false, serverURL:"
> http://chemapps.stolar.edu/jmol/jsmol/jsmol.php";, defaultModel:"",
Good catch on the spelling. Thanks. I had meant to take that out completely as
I don't want to generate cross-domain calls, or server calls once the page is
downloaded.
> Note that you spelled "stolaf" incorrectly there. But that needs to point
> to a file on YOUR server, so that it is not a cross-domain call. (I think
> there's a hitch with cross-domain synchronous binary AJAX with some
> browsers.) That really should fix your problem.
>
> Just for reference, the issue that we have is a combination of:
>
> -- Jmol needs to read files synchronously, because file reading may be
> deeply embedded in scripts
> -- Jmol needs to read binary files
I think for SAGE and WebExport, I can avoid this (although files will get
bigger). Which reminds me. Do we have a final result on the best way to
compress the J2s-JSmol files?
> -- Some applications of Jmol need cross-domain access
> -- Some applications of Jmol need local file access
This may be an issue for WebExport. Not a problem for the server based math
package.
>
> As far as I can tell, we are the first to address all these issues. jQuery
> by itself, out of the box, for example, cannot handle synchronous binary
> file transfer.
>
> In addition, there will always be a problem with that last one -- local
> file access -- because some browsers simply will not let AJAX do that.
> People requiring local file access need to use specific browsers and
> possibly specific platforms. There is no problem at all with
> Firefox/Windows. MSIE and Chrome cannot do local file access by AJAX.
> That's about all I know.
My local access experience on MacOS is similar. I haven't fired up one of my
Linux systems with a GUI to check Linux yet.
Dr. Jonathan H. Gutow
Chemistry Department [email protected]
UW-Oshkosh Office:920-424-1326
800 Algoma Boulevard FAX:920-424-2042
Oshkosh, WI 54901
http://www.uwosh.edu/facstaff/gutow/
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