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30 lines
1.4 KiB
Matlab
30 lines
1.4 KiB
Matlab
function T = calcT(ADU)
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%
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% T = calcT(ADU) - piecewise calculation prototype
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%
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X0 = [732.44 944.75 1197.23 2034.68 2308.60 2541.55 2738.63 2859.45 2969.21 3067.67 3153.52 3228.22 3292.84 3347.15];
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Y0 = [10.000 16.000 22.700 43.750 50.800 57.100 62.800 66.550 70.200 73.750 77.150 80.450 83.700 86.900];
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K = [0.028261 0.026536 0.025136 0.025738 0.027044 0.028922 0.031038 0.033255 0.036056 0.039606 0.044173 0.050296 0.058920 0.071729];
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imax = max(size(X0)); idx = int32((imax+1)/2);
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T = [];
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% find index
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while(idx > 0 && idx <= imax)
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x = X0(idx);
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half = int32(idx/2);
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if(ADU < x)
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%printf("%g < %g\n", ADU, x);
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if(idx == 1) break; endif; % less than first index
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if(ADU > X0(idx-1)) idx -= 1; break; endif; % found
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idx = half; % another half
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else
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%printf("%g > %g\n", ADU, x);
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if(idx == imax) break; endif; % more than last index
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if(ADU < X0(idx+1)) break; endif; % found
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idx += half;
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endif
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endwhile
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if(idx < 1) printf("too low (<%g)!\n", X0(1)); idx = 1; endif
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if(idx > imax) idx = imax; endif;
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T = Y0(idx) + K(idx) * (ADU - X0(idx));
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endfunction
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