Last change
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checked in by pinsard, 13 years ago
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[43] | 1 | ;+ |
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[46] | 2 | ; .. _significance_test_99.pro: |
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[43] | 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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[50] | 14 | ; :ref:`project_profile.sh` |
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[43] | 15 | ; |
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[46] | 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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[43] | 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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[50] | 24 | ; IDL> @project_init |
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[43] | 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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[46] | 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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[43] | 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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[85] | 44 | ; $URL$ |
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| 45 | ; |
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[43] | 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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[97] | 52 | ; |
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| 53 | X=x |
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[94] | 54 | Y=y |
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[97] | 55 | ; |
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[41] | 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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[97] | 63 | p=0.01 ;(for 99% significant) |
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[41] | 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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[97] | 66 | ; |
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[41] | 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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[97] | 73 | ; |
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[41] | 74 | end |
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