[2] | 1 | ;+ |
---|
| 2 | ; NAME: |
---|
| 3 | ; plotsym |
---|
| 4 | ; PURPOSE: |
---|
| 5 | ; function to make plotting symbols much easier. |
---|
| 6 | ; Usage: |
---|
| 7 | ; plot,x,y,psym=plotsym(/circle,scale=2,/fill) |
---|
| 8 | ; |
---|
| 9 | ; CATEGORY: |
---|
| 10 | ; Graphics. |
---|
| 11 | ; |
---|
| 12 | ; Keywords: |
---|
| 13 | ; circle = circle symbol |
---|
| 14 | ; triangle = triangle symbol |
---|
| 15 | ; diamond = diamond symbold |
---|
| 16 | ; box = box symbol |
---|
| 17 | ; line = line symbol |
---|
| 18 | ; scale = scales the symbol |
---|
| 19 | ; angle = angle the symbol should be rotated |
---|
| 20 | ; _extra = extra keywords for usersym. These are thick, color and fill |
---|
| 21 | ; |
---|
| 22 | ; Written by: |
---|
| 23 | ; Ronn Kling |
---|
| 24 | ; Ronn Kling Consulting |
---|
| 25 | ; 7038 Westmoreland Dr. |
---|
| 26 | ; Warrenton, VA 20187 |
---|
| 27 | ; klingrl@juno.com |
---|
| 28 | ; copyright 1999, all rights reserved |
---|
| 29 | ;- |
---|
| 30 | |
---|
[97] | 31 | function plotsym, circle=circle, triangle=triangle, diamond=diamond, $ |
---|
| 32 | angle=angle, box=box, line=line, scale=scale, $ |
---|
| 33 | _extra=extra |
---|
[114] | 34 | ; |
---|
| 35 | compile_opt idl2, strictarrsubs |
---|
| 36 | ; |
---|
[2] | 37 | if not keyword_set(scale) then scale=1.0 |
---|
| 38 | if not keyword_set(angle) then angle=0.0 |
---|
| 39 | |
---|
| 40 | if keyword_set(circle) then begin |
---|
| 41 | theta = findgen(30)/29.*360. |
---|
| 42 | endif else if keyword_set(triangle) then begin |
---|
| 43 | theta = [-30.,90.,210., -30.] |
---|
| 44 | endif else if keyword_set(diamond) then begin |
---|
| 45 | theta = [0.,90.,180.,270.,0.] |
---|
| 46 | endif else if keyword_set(box) then begin |
---|
| 47 | theta = [315.,45.,135.,225.,315.] |
---|
| 48 | endif else if keyword_set(line) then begin |
---|
| 49 | theta = [-180.,0.] |
---|
| 50 | endif |
---|
| 51 | |
---|
| 52 | theta = theta + angle |
---|
| 53 | x = cos(theta * !dtor) * scale |
---|
| 54 | y = sin(theta * !dtor) * scale |
---|
| 55 | |
---|
| 56 | usersym, x,y, _extra=extra |
---|
| 57 | return,8 |
---|
| 58 | end |
---|