| Date axis in object graphics (IDL 5.3) [message #20910] |
Mon, 31 July 2000 00:00  |
George Constantinides
Messages: 16
Registered: July 2000
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Junior Member |
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Hi all IDL gurus,
This should be an easy one for you.
I am using LABEL_DATE to produce a time axis in object graphics as
follows:
;...... some code ....
dummy = Label_Date(Date_Format = '%D-%M!C%H',Offset=start_date)
;...... some more code ....
xAxis = Obj_New("IDLgrAxis", 0, Color=[255,255,0], Ticklen=0.025, $
Minor=4, Range=xrange, Title=xtitle, TickDir=1, $
TickFormat = 'Label_Date',Location=[0, 0.2 ,0])
;.......
I expect the HOURS to appear below the date. This works in direct
graphics but in object graphics it does not understand !C as a directive
and instead displays it as a literal.
Am I going something wrong, or have I discovered bag number: 4527
Regards
GC
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| Re: Date axis in object graphics (IDL 5.3) [message #20963 is a reply to message #20910] |
Tue, 01 August 2000 00:00  |
Mark Hadfield
Messages: 783
Registered: May 1995
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Senior Member |
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"George Constantinides" <gconstantinides@mhl.nsw.gov.au> wrote in message
news:39851C57.62251B78@mhl.nsw.gov.au...
> This should be an easy one for you.
> I am using LABEL_DATE to produce a time axis in object graphics as
> follows:
>
> ;...... some code ....
> dummy = Label_Date(Date_Format = '%D-%M!C%H',Offset=start_date)
> ;...... some more code ....
> xAxis = Obj_New("IDLgrAxis", 0, Color=[255,255,0], Ticklen=0.025, $
>
> Minor=4, Range=xrange, Title=xtitle, TickDir=1, $
> TickFormat = 'Label_Date',Location=[0, 0.2 ,0])
> ;.......
>
> I expect the HOURS to appear below the date. This works in direct
> graphics but in object graphics it does not understand !C as a directive
> and instead displays it as a literal.
>
> Am I going something wrong, or have I discovered bag number: 4527
No you're not doing anything wrong. Text objects do not recognise !C,
although they do recognise other formatting codes if create with the
ENABLE_FORMATTING property set.
I don't think it's really a bug (or a bag), just a limitation.
P.S. Ticktext objects created by an IDLgrAxis have ENABLE_FORMATTING turned
off. To turn it on you can do:
oaxis->GetProperty, TICKTEXT=ticktext
for i=0,n_elements(ticktext)-1 do $
if obj_valid(ticktext[i]) then $
ticktext[i]->SetProperty, /ENABLE_FORMATTING
---
Mark Hadfield
m.hadfield@niwa.cri.nz http://katipo.niwa.cri.nz/~hadfield/
National Institute for Water and Atmospheric Research
PO Box 14-901, Wellington, New Zealand
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