59 lines
2.5 KiB
Plaintext
59 lines
2.5 KiB
Plaintext
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set terminal epslatex font 8 color dashed
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set output './ModeleLaTeX_TP-gnuplottex-fig1.tex'
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set format '\num{%g}'
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set key top right Left
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set key width 1
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set key heigh 1
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set key spacing 1.5
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#set sample 1000
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#set xr [0:11]
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#set yr [0:11]
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set xlabel 'Courant I (\si{\milli\ampere})' # attention il faut parfois utiliser certains guillemets
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# notamment quand on utilise la commande \si, il faut impérativement des primes '...'
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set ylabel 'Tension U (\si{\volt})'
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# Création du fit des données
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# ---
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# la fonction de fit
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f(x)=a*x+b
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g(x)=c*x+d
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h(x)=e*x+f
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i(x)=g*x+h
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j(x)=i*x+j
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# l'index 0 indique que les données sont dans le premier tableau du fichier
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# on utilise (u) les deux premières colonnes et les paramètres de fit sont a et b
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fit f(x) 'data9.txt' index 0 u 2:1 via a,b
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fit g(x) 'data9.txt' index 1 u 2:1 via c,d
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fit h(x) 'data9.txt' index 2 u 2:1 via e,f
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fit i(x) 'data9.txt' index 3 u 2:1 via g,h
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fit j(x) 'data9.txt' index 4 u 2:1 via i,j
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#,\ f(x) title 'Régres. linéaire.' lc 'blue'
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R1 = a*1000
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e1 = (47-R1) / 47 *100
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title_f(a,b) = sprintf('\(R_{pente}\;\;\;\,\) = \SI{%.1f}{\ohm} ; \(e_{mes.}\) = %.1f\%', R1, e1)
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R2 = c*1000
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e2 = (100-R2) / 100 *100
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title_g(c,d) = sprintf('\(R_{pente}\;\;\;\,\) = \SI{%.1f}{\ohm} ; \(e_{mes.}\) = %.1f\%', R2, e2)
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R3 = e*1000
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e3 = (177-R3) / 177 *100
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title_h(c,d) = sprintf('\(R_{pente}\;\;\;\,\) = \SI{%.1f}{\ohm} ; \(e_{mes.}\) = %.1f\%', R3, e3)
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R4 = g*1000
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e4 = (454-R4) / 454 *100
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title_i(c,d) = sprintf('\(R_{pente}\;\;\;\,\) = \SI{%.1f}{\ohm} ; \(e_{mes.}\) = %.1f\%', R4, e2)
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R5 = i*1000
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e5 = (1193-R5) / 1193 *100
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title_j(c,d) = sprintf('\(R_{pente}\;\;\;\,\) = \SI{%.1f}{\ohm} ; \(e_{mes.}\) = %.1f\%', R5, e5)
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plot [0:50][0:12]\
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'data9.txt' index 0 u 2:1:4:3 title '\(R_{anneaux}=\SI{50}{\ohm}\) ; \(R_{mes.}=\SI{47}{}\pm\SI{2.5}{\ohm}\)' pt 4 w xyerrorbars,\
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f(x) title title_f(a,b) lc 'green',\
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'data9.txt' index 1 u 2:1:4:3 title '\(R_{anneaux}=\SI{100}{\ohm}\) ; \(R_{mes.}=\SI{100}{}\pm\SI{3}{\ohm}\)' pt 4 w xyerrorbars,\
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g(x) title title_g(c,d) lc 'red',\
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'data9.txt' index 2 u 2:1:4:3 title '\(R_{anneaux}=\SI{180}{\ohm}\) ; \(R_{mes.}=\SI{177}{}\pm\SI{4}{\ohm}\)' pt 4 w xyerrorbars,\
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h(x) title title_h(e,f) lc 'blue',\
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'data9.txt' index 3 u 2:1:4:3 title '\(R_{anneaux}=\SI{500}{\ohm}\) ; \(R_{mes.}=\SI{454}{}\pm\SI{6,6}{\ohm}\)' pt 4 w xyerrorbars,\
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i(x) title title_i(g,h) lc 'violet',\
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'data9.txt' index 4 u 2:1:4:3 title '\(R_{anneaux}=\SI{1200}{\ohm}\) ; \(R_{mes.}=\SI{1193}{}\pm\SI{14}{\ohm}\)' pt 4 w xyerrorbars,\
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j(x) title title_j(i,j) lc 'orange'
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