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kaklik |
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set terminal png |
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set output "temperature.png" |
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set key under |
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set xlabel "ADC value [-]" |
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set ylabel "Temperature [°C]" |
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f(x)= k*x + q |
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fit f(x) "calibration_data.txt" using 2:1 via k,q |
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# from http://hw.cz/docs/mereni_teploty/mereni_teploty_1.html/ |
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A=3.90802e-3 |
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B=-5.802e-7 |
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g(x)=(-A + sqrt(A*A - 4*B*(1.0 - 1.0*x*2350.0/1024.0/1000.0)))/2.0/B; |
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plot "calibration_data.txt" using 2:1 with points title "measured points", f(x) title "0.674201 * x - 294.35", g(x) title "original hw.cz" |