1 | ;+ |
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2 | ; |
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3 | ; @file_comments |
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4 | ; function to make plotting symbols much easier. |
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5 | ; |
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6 | ; @categories |
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7 | ; Graphics |
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8 | ; |
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9 | ; @keyword circle |
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10 | ; circle symbol |
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11 | ; |
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12 | ; @keyword TRIANGLE |
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13 | ; triangle symbol |
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14 | ; |
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15 | ; @keyword DIAMOND |
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16 | ; diamond symbol |
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17 | ; |
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18 | ; @keyword BOX |
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19 | ; box symbol |
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20 | ; |
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21 | ; @keyword LINE |
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22 | ; line symbol |
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23 | ; |
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24 | ; @keyword SCALE |
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25 | ; scales the symbol |
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26 | ; |
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27 | ; @keyword ANGLE |
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28 | ; angle the symbol should be rotated |
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29 | ; |
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30 | ; @keyword _EXTRA |
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31 | ; Used to pass keywords to <proidl>usersym</proidl>. |
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32 | ; These are thick, color and fill. |
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33 | ; |
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34 | ; @history |
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35 | ; Written by: |
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36 | ; Ronn Kling |
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37 | ; Ronn Kling Consulting |
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38 | ; 7038 Westmoreland Dr. |
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39 | ; Warrenton, VA 20187 |
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40 | ; klingrl\@juno.com |
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41 | ; copyright 1999, all rights reserved |
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42 | ; |
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43 | ; @version |
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44 | ; $Id$ |
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45 | ; |
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46 | ;- |
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47 | ; |
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48 | FUNCTION plotsym, circle=circle, triangle=triangle, diamond=diamond, $ |
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49 | angle=angle, box=box, line=line, scale=scale, $ |
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50 | _EXTRA=extra |
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51 | ; |
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52 | compile_opt idl2, strictarrsubs |
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53 | ; |
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54 | if not keyword_set(scale) then scale=1.0 |
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55 | if not keyword_set(angle) then angle=0.0 |
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56 | |
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57 | if keyword_set(circle) then begin |
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58 | theta = findgen(30)/29.*360. |
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59 | endif else if keyword_set(triangle) then begin |
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60 | theta = [-30.,90.,210., -30.] |
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61 | endif else if keyword_set(diamond) then begin |
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62 | theta = [0.,90.,180.,270.,0.] |
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63 | endif else if keyword_set(box) then begin |
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64 | theta = [315.,45.,135.,225.,315.] |
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65 | endif else if keyword_set(line) then begin |
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66 | theta = [-180.,0.] |
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67 | endif |
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68 | |
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69 | theta = theta + angle |
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70 | x = cos(theta * !dtor) * scale |
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71 | y = sin(theta * !dtor) * scale |
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72 | |
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73 | usersym, x,y, _extra=extra |
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74 | return,8 |
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75 | end |
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