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1 | ;+ |
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2 | ; .. _significance_test_99.pro: |
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3 | ; |
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4 | ; ======================== |
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5 | ; significance_test_99.pro |
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6 | ; ======================== |
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7 | ; |
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8 | ; DESCRIPTION |
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9 | ; =========== |
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10 | ; |
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11 | ; SEE ALSO |
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12 | ; ======== |
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13 | ; |
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14 | ; :ref:`project_profile.sh` |
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15 | ; |
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16 | ; :ref:`fig10_swr_correction.pro` |
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17 | ; :ref:`fig4_met_var_correction_scatter.pro` |
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18 | ; |
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19 | ; EXAMPLES |
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20 | ; ======== |
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21 | ; |
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22 | ; :: |
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23 | ; |
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24 | ; IDL> @project_init |
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25 | ; IDL> x=++ |
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26 | ; IDL> y=++ |
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27 | ; IDL> sig_value=++ |
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28 | ; IDL> significance_test_99, x, y, sig_value |
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29 | ; |
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30 | ; TODO |
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31 | ; ==== |
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32 | ; |
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33 | ; coding rules |
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34 | ; |
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35 | ; complete description |
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36 | ; |
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37 | ; complete example |
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38 | ; |
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39 | ; EVOLUTIONS |
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40 | ; ========== |
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41 | ; |
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42 | ; $Id$ |
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43 | ; |
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44 | ; $URL$ |
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45 | ; |
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46 | ; - fplod 20110411T142955Z aedon.locean-ipsl.upmc.fr (Darwin) |
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47 | ; |
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48 | ; * minimal header |
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49 | ; |
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50 | ;- |
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51 | pro significance_test_99, x, y, sig_value |
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52 | ; |
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53 | X=x |
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54 | Y=y |
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55 | ; |
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56 | X=X-total(X)/n_elements(X) |
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57 | Y=Y-total(Y)/n_elements(Y) |
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58 | sx=stdev(X) |
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59 | sy=stdev(Y) |
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60 | reg=correlate(X,Y)*sy/sx |
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61 | sse=total((Y-reg*X)^2)/n_elements(X) |
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62 | t=abs(sqrt(n_elements(X)-2.)*reg/sqrt(sse/sx^2)) |
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63 | p=0.01 ;(for 99% significant) |
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64 | ; tc=t_cvf(p/2.,n_elements(X)-1) |
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65 | tc=t_cvf(p/2.,n_elements(X)/5.-1) |
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66 | ; |
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67 | sig1=1.*(t ge tc) |
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68 | if (sig1 eq 1. ) then begin |
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69 | print, 'Statistics are valid at 99% significance level' |
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70 | endif else begin |
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71 | print, 'Statistics are not valid at 99% significance level' |
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72 | endelse |
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73 | ; |
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74 | end |
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