| Re: IDL's Table Widget [message #15458 is a reply to message #15385] |
Tue, 18 May 1999 00:00   |
Michael Asten
Messages: 53
Registered: March 1999
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Member |
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The table widget reqires a double click to "activiate"the cell, then a Enter
to accept the change. Yes, it is disgracefully unintuitive and
undocumented. No, David Fanning is not being unhelpful, but just showing
his war wounds (see much discussion in the newgroup archive circa feb-march
1999).
Use of the table widget is demoed in the idl routine XVAREDIT which is
called in a demo program appended below. As a digression, I repeat a point
made last Feb, that the old idl 4.x version of XVAREDIT (same name,
different routine, no table widget) is vastly more user friendly, and one I
regularly use for editting lists of variables packed into a structure. Who
would want to use the dreaded idl5.x table widget, and have program users
phone in each day to say the widget has frozen ? (If you want a copy of
xvaredit from idl 4.x, email me; Im reluctant to add it to the newgroup
since it is rsi copyright).
Regards,
Michael Asten
;
; program to demonstrate use of XVAREDIT for editting mixed string and
; real numbers, in a widget
; this works in idl 5.x, but note the edit process on each cell of the
widget
; requires a double click to "activate" the cell, and a Press Enter
; to confirm changes to the cell.
; This program works more cleanly and more intuitively with the different
; procedure (of the same name) XVAREDIT in IDL 4.x
; (in directory \rsi\idl40\lib).
;
; demo by Michael Asten, Monash University, Melbourne. 9 Jan 99.
;
x=10.*indgen(5*36)
y=sin(x*!pi/180)
plot,x,y
xmin=0 & xmax=(5*360) & ymin=-1. & ymax=1.
title='XVAR TEST'
print,title,xmin,xmax,ymin,ymax
; now set up a structure to pass plot parameters to an edit widget
plot_par={plot_title:title,Xaxis_left_limit:xmin,Xaxis_right _limit:xmax, $
Yaxis_lower_limit:ymin,Yaxis_top_limit:ymax}
xvaredit,plot_par ; edit the parameters in a widget
title=plot_par.plot_title ; now extract the editted parameters from
the structure
xmin=plot_par.Xaxis_left_limit
xmax=plot_par.Xaxis_right_limit
ymin=plot_par.Yaxis_lower_limit
ymax=plot_par.Yaxis_top_limit
print,title,xmin,xmax,ymin,ymax ; print the new values
plot,x,y,title=title,xrange=[xmin,xmax],yrange=[ymin,ymax] ; draw the new
plot
end
phil_aldis@my-dejanews.com wrote:
> I'm having problems with IDL's table widget. I was wondering if anyone
> has a good tutorial on how to use it. Specifically, I'm having problems
> when I use widget_control to set the table's value - it does not seem to
> be updating. Do I have to delete and insert rows all the time?
>
> Cheers
>
> Phil
>
> P.S Please post replies to newsgroup as I need to read them at work :)
>
> --== Sent via Deja.com http://www.deja.com/ ==--
> ---Share what you know. Learn what you don't.---
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