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IDL Resources by
Bob O'Connell (U. of Virginia)
Beginners IDL cookbook from Christophe Morisset (UNAM Mexico)
TeX to IDL (making it simple to create complex labels for plots in IDL)
Number format codes
IDL Astronomy User's Library - Contents
Tubingen astronomy routines (e.g. 'hastron')
| !3 |
Simplex Roman (default) |
!12 |
Simplex Script |
| !4 |
Simplex Greek |
!13 |
Complex Script |
| !5 |
Duplex Roman |
!14 |
Gothic Italian |
| !6 |
Complex Roman |
!15 |
Gothic German |
| !7 |
Complex Greek |
!16 |
Cyrillic |
| !8 |
Complex Italian |
!17 |
Triplex Roman |
| !9 |
Math Font |
!18 |
Triplex Italian |
| !10 |
Special Characters |
!20 |
Misc |
| !11 |
Gothic English |
!X |
Revert to entry font |
>plot,(x,)y,psym=n
| 0 |
joined up |
| 1 |
Plus Sign (+) |
| 2 |
Asterisk (*) |
| 3 |
Dot (.) |
| 4 |
Diamond |
| 5 |
Triangle |
| 6 |
Square |
| 7 |
Cross
(x) |
| 8 |
User Defined (see USERSYM procedure) |
| 9 |
Undefined |
| 10 |
Histogram
mode. Horizontal and vertical lines connect the plotted points,
as opposed to the normal method of connecting points with straight
lines. |
To get
non-default plot symbols, use PLOTSYM:
>plotsym, psym, [psize, /fill]
| PSYM
- The following integer values of PSYM will create the corresponding
plot symbols |
| 0 |
circle |
| 1 |
downward
arrow (upper limit), base of arrow begins at plot value |
| 2 |
upward
arrow (lower limt) |
| 3 |
5
pointed star |
| 4 |
triangle |
| 5 |
upside
down triangle |
| 6 |
left
pointing arrow |
| 7 |
right
pointing arrow |
| 8 |
square
(custom) |
| 9 |
Undefined |
ANGSTROM:-
angstrom
= '!6!sA!r!u!9 %!6!n' (to create the symbol)
angstrom = '!3' + STRING(197B) + '!X' (to use octal notation)
then just use it like...
XYOUTS, 0.5, 0.5, /Normal, CharSize=2.0, 'Symbol: ' + angstrom
or
for e.g. plot title like "Wavelength (A)"
'Wavelength (!3' + STRING(197B) + '!X)'
SOLAR SYMBOL:-
!D!9n!3!N (thanks to Magda for finding that)
GREEK LETTERS:-
!7 is the Greek character set and !3 is the standard character
set.
e.g. H beta is H!7b!3
SUPERSCRIPT/SUBSCRIPT:-
!E or !U = superscript (bold one is better)
!I or !D = subscript
!N = back to normal
>LoadCT,n
| 0 |
B-W LINEAR |
14 |
STEPS |
28 |
Hardcandy |
| 1 |
BLUE/WHITE |
15 |
STERN SPECIAL |
29 |
Nature |
| 2 |
GRN-RED-BLU-WHT |
16 |
Haze |
30 |
Ocean |
| 3 |
RED TEMPERATURE |
17 |
Blue - Pastel - Red |
31 |
Peppermint |
| 4 |
BLUE/GREEN/RED/YELLOW |
18 |
Pastels |
32 |
Plasma |
| 5 |
STD GAMMA-II |
19 |
Hue Sat Lightness
1 |
33 |
Blue-Red |
| 6 |
PRISM |
20 |
Hue Sat Lightness
2 |
34 |
Rainbow |
| 7 |
RED-PURPLE |
21 |
Hue Sat Value 1 |
35 |
Blue Waves |
| 8 |
GREEN/WHITE LINEAR |
22 |
Hue Sat Value 2 |
36 |
Volcano |
| 9 |
GRN/WHT EXPONENTIAL |
23 |
Purple-Red + Stripes |
37 |
Waves |
| 10 |
GREEN-PINK |
24 |
Beach |
38 |
Rainbow18 |
| 11 |
BLUE-RED |
25 |
Mac Style |
39 |
Rainbow + white |
| 12 |
16 LEVEL |
26 |
Eos A |
40 |
Rainbow + black |
| 13 |
RAINBOW |
27 |
Eos B |
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Link to see Examples
the system
variable !DTOR converts degrees to radians when multiplying, for example:
IDL> print, sin(45.0*!DTOR)
The command TVLCT,R,G,B,\GET loads the current color table into the variables R, G and B. You can then manipulate these variables to change the color table. For example, the following code segment will reverse the color table.
IDL> LOADCT,3 ;Load the Red Temperature color table
IDL> TVLCT,R,G,B,/GET ;Put the table into IDL variables
IDL> RR=REVERSE(R)
IDL> GG=REVERSE(G)
IDL> BB=REVERSE(B)
IDL> TVLCT,RR,GG,BB ;Load the reversed colors
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