[Jprogramming] JHS plot breakthrough

[bill lam]

There was a mismatch for suffix htm vs html, please update plot package
(to 1.0.17) and test again.

Птн, 02 Дек 2011, Kip Murray писал(а):
> The rough edges include absence of ~addons/ide/jhs/jplotdemos.ijs .  I 
> found jplotdemo.ijs and tried it instead.  After several iterations of 
> installing addons required by jplotdemo.ijs I was able to do
> 
>     plotdemo
> NB. requires JAL graphics/plot and graphics/afm installs
> NB. requires JAL general/misc and math/misc installs
> NB. plotdemos 0 through jplot 54 create html plot files
>     plot 10?10
>     plotdemos 1
>     plotdemos 10
>     plotdef 'show';600 300 NB. jhsshow width height
>     plotdemos 10
>     plotdef 'link';400 200 NB. jhslink
>     plotdemos 25
>     plotdef 'none';600 300 NB. create ~temp/plot.html without show or link
>     plotdef 'show';600 300 NB. jhsshow
>     plotdemos 54
> 
> but none of the listed commands would work correctly with Google Chrome. 
>   For example,
> 
>     plot 10?10
> 
> led to a window with address http://127.0.0.1:65001/~temp/plot.html
> and Chrome error message
> 
> No data received
> Unable to load the webpage because the server sent no data.
> Here are some suggestions:
> Reload this webpage later.
> Error 324 (net::ERR_EMPTY_RESPONSE): The server closed the connection 
> without sending any data.
> 
> This was a typical response to the commands I tried.
> 
> However, when I used Windows Explorer to find file
> 
> C:\Users\Kip Murray\j701-user\temp\plot.htm
> 
> and clicked on the file name in Windows Explorer, a J Plot window opened 
> showing a jagged line plot passing through ten random points, on a 
> "graph paper" grid with labels i.10 on the x and y axes.
> 
> So something is working!
> 
> It appears to me ~temp/plot.html was incorrect identification of the 
> html file.
> 
> 
> On 12/2/2011 12:34 PM, Eric Iverson wrote:
> > Thanks to a significant contribution by Bill Lam we now have much of the J6
> > native J plot facility in J7 JHS!
> >
> > This provides plotting in JHS similar to what was available in J6 without
> > the requirement for gnuplot and without the limitations of Google Charts.
> >
> > The plot output is an html file that draws on the html5 canvas element.
> > This is similar to the new gnuplot facility and uses the same jhsshow,
> > jhslink, and related facilities.
> >
> > There are still rough edges that need work, but I strongly encourage you to
> > take an initial look.
> >
> > Use JAL to update JHS then shutdown and restart JHS server.
> >
> > browse to jijx
> >     load'~addons/ide/jhs/jplotdemos.ijs'
> >     plotdemo
> >
> > One of the  big problems in getting labs to run in JHS was that J6 plot
> > wasn't supported. With this new support it should be much easier to get
> > more of the labs running cleanly on JHS.
> >
> > This plot facility will work on your iPad!
> > ----------------------------------------------------------------------
> > For information about J forums see http://www.jsoftware.com/forums.htm
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm

-- 
regards,
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