On 8/6/2012 12:57 PM, John Ackermann N8UR wrote:
IMG SRC=image.big WIDTH=50% HEIGHT=50%
The viewer can then right-click on the image and via the view image or
similar menu open up the full-sized version for the fine detail. That
worked on my browser and monitor, but apparently not on some
On 8/6/12 10:43 AM, Chris Albertson wrote:
On Mon, Aug 6, 2012 at 8:34 AM, Jim Lux jim...@earthlink.net wrote:
what would be useful is to have some sort of plotting engine that is a
canned webpage (or stored locally on the user/client computer) that can
ingest fairly raw data from a URL..
Regarding plotting data files through a web page, some time ago I wrote a
small utility to do just that. We have a corona tester here at my workplace
that generates binary files with the corona data. These are not easily
plotted from a standard tool because of the proprietary format.
If you are looking to graph long running data and provide rolled up
summaries, the combination of MRTG and RRDtool is pretty hard to beat. Can
work with pretty much anything on the back end. And it's the industry
standard for network monitoring.
http://oss.oetiker.ch/mrtg/doc/mrtg.en.html
Or
On Tue, Aug 7, 2012 at 6:45 AM, Jim Lux jim...@earthlink.net wrote:
On 8/6/12 10:43 AM, Chris Albertson wrote:
On Mon, Aug 6, 2012 at 8:34 AM, Jim Lux jim...@earthlink.net wrote:
what would be useful is to have some sort of plotting engine that is a
canned webpage (or stored locally on the
Le 07/08/2012 17:56, Chris Albertson a écrit :
On Tue, Aug 7, 2012 at 6:45 AM, Jim Lux jim...@earthlink.net wrote:
On 8/6/12 10:43 AM, Chris Albertson wrote:
On Mon, Aug 6, 2012 at 8:34 AM, Jim Lux jim...@earthlink.net wrote:
what would be useful is to have some sort of plotting engine
albertson.ch...@gmail.com said:
So the web server is inside an Arduino? Yes can't run GNUplot there. Why
not have the Arduino produce either Postscript or PDF? It is very easy to
draw a graph in Postscript.
That's a very good suggestion.
I think the key idea is that the programmer is
In message 20120807180611.cf5c9800...@ip-64-139-1-69.sjc.megapath.net, Hal Mu
rray writes:
albertson.ch...@gmail.com said:
So the web server is inside an Arduino? Yes can't run GNUplot there. Why
not have the Arduino produce either Postscript or PDF? It is very easy to
draw a graph in
One good reason for doing as little as possible in a micro-controller is
that they are often used to collect raw data with as little latency as
possible. Doing web serving on a single slowish core in that case is not a
good idea. I have a bunch of Soekris doing data collection and if I start
I'm finally starting to capture audio data so I can see what happens when a
cycle gets lost or added.
We lost power for a few seconds yesterday. Here are a few graphs:
http://www.megapathdsl.net/~hmurray/time-nuts/line/2012-Aug-06-a0.png
I would suggest an external usb soundcard. Go through ebay and find the kind in
the blue metal case. You can actually pull the card if you want physical
access. I have used that model, which uses Cmedia chipset, with the line input.
Even with protection circuitry, I would be concerned about
p...@phk.freebsd.dk said:
That is _exactly_ why you should use a vectorformat like SVG: Raster format
is a waste of bytes for line graphics.
Except that it doesn't work that way, at least for my simple test case.
SVG is uncompressed text. PNG compresses well, at least for simple cases.
You can save the file then view it in inkscape.
http://inkscape.org/
That worked for me. Firefox is supposed to read SVG, but all I got was text.
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On Tue, Aug 7, 2012 at 9:32 PM, Hal Murray hmur...@megapathdsl.net wrote:
p...@phk.freebsd.dk said:
That is _exactly_ why you should use a vectorformat like SVG: Raster
format
is a waste of bytes for line graphics.
Except that it doesn't work that way, at least for my simple test case.
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