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Re: Greek Symbols in Plot Annotations [message #69283 is a reply to message #69282]

Mon, 11 January 2010 15:02

Paul Van Delst[1]
Messages: 1157
Registered: April 2002

Senior Member

Excellent. I no longer need to do stuff like

Delta = !D.NAME EQ 'PS' ? '!9D!X' : '!4D!X'
epsilon = !D.NAME EQ 'PS' ? '!9e!X' : '!4e!X'

in my code! Woohoo!

BTW, why not do something like

IF !D.NAME EQ 'PS' THEN BEGIN
DEVICE, /ISOLATIN1
esc = '!9'
ENDIF ELSE BEGIN
esc = '!4'
ENDELSE

CASE StrLowCase(letter) OF
'alpha': greekLetter = (capital) ? String("101B) : String("141B)
'beta': greekLetter = (capital) ? String("102B) : String("142B)
...etc...
ENDCASE
greekLetter = esc + greekLetter + '!X'

?

The only thing the CASE construct should be doing is selecting the right string element,
right? All the other stuff (prefixing and suffixing with the escape sequences, testing for
PS or not) can be done outside. Then you only need one CASE construct and the code is not
so wet[*]. :o)

cheers,

paulv

[*] http://en.wikipedia.org/wiki/Don't_repeat_yourself

David Fanning wrote:
> wlandsman writes:
>
>> Those of us who know LateX have probably been using the TeXtoIDL
>> package for this task. (The original version is at
>> http://physweb.mnstate.edu/mcraig/textoidl/ ; a slightly improved
>> package is available in the excellent Sloan Digital Sky Survey (SDSS)
>> library http://code.google.com/p/sdssidl/ ). One finds the string
>> for the Greek alpha symbol as string = textoidl('\alpha'). But I
>> don't believe that TeXtoIDL handles true-type fonts, so greek.pro
>> should still be useful even for TeXtoIDL users -- thanks.
>
> Maarten Sneep gave me a great suggestion this morning. As
> an alternative to setting the CAPITAL keyword to getting
> the uppercase Greek letter, you can now also capitalize
> the first letter of the Greek name. So, before to get
> a capital letter you did this:
>
> Print, Greek('omega', /CAPITAL)
>
> But now you can also do this:
>
> Print, Greek('Omega')
>
> The program is here:
>
> http://www.dfanning.com/programs/greek.pro
>
> Cheers,
>
> David
>
>
>

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[Message index]

		Re: Greek Symbols in Plot Annotations By: David Fanning on Tue, 12 January 2010 08:30
		Re: Greek Symbols in Plot Annotations By: Paul Van Delst[1] on Tue, 12 January 2010 07:17
		Re: Greek Symbols in Plot Annotations By: David Fanning on Mon, 11 January 2010 15:32
		Re: Greek Symbols in Plot Annotations By: David Fanning on Mon, 11 January 2010 15:14
		Re: Greek Symbols in Plot Annotations By: Paul Van Delst[1] on Mon, 11 January 2010 15:02
		Re: Greek Symbols in Plot Annotations By: David Fanning on Mon, 11 January 2010 05:44
		Re: Greek Symbols in Plot Annotations By: wlandsman on Mon, 11 January 2010 05:26
		Re: Greek Symbols in Plot Annotations By: cgguido on Sun, 10 January 2010 12:15

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