1c9f0e69-7d83-4c3c-abea-b2c8e8fe42cd 8 4 5 decimal

&[DATE] &[TIME] - &[FILENAME]

data char size clr plot k 1 data rows range r3 k el char : r4 k el size : r5 k el clr : 13 mat for data r3 r4 r5 augment 21 line :

XY °C kJ/kg 23 96.83 22 92.65 21 88.47 20 84.29 19 80.1 62 mat :

XY XY 26 range 12 range el :

support XY . 14 red plot :

vx XY 1 col : vy XY 2 col : 12 mat x f vx vy x cinterp : 21 mat

°C 21.5 :

command line °C f 90.56

Though not visible, maybe ? a slight underlying curvature

x f support 2 1 sys

kJ_kg 90 :

°C 1 :

XY 23 96.83 22 92.65 21 88.47 20 84.29 19 80.1 52 mat

solving °C vs specific kJ/kg x f kJ_kg - x 1923 solve °C 21.37

data 23 5.9995 6.2995 6.5328 22 5.2493 5.5993 5.8793 21 4.6658 5.0391 5.3445 20 4.199 4.5807 4.8989 19 3.817 4.1988 4.5218 54 mat :

U data 1 col data 2 col augment : V data 1 col data 3 col augment : W data 1 col data 4 col augment : 31 mat

U V W 3 1 sys

x y M bilinear has quadratic behaviour A M 112 M cols submatrix : B M 2 M rows 11 submatrix : C M 2 M rows 2 M cols submatrix : j 1 A length 2 range CC j el B C 1 C rows j j submatrix y linterp : for A transpose CC x linterp 61 line :

[1,2,3 ... 10,20,30]
for easy fractional mnemonic M X▼/Y► 12323 5.9995 6.2995 6.5328 22 5.2493 5.5993 5.8793 21 4.6658 5.0391 5.3445 20 4.199 4.5807 4.8989 19 3.817 4.1988 4.5218 64 mat :

X direction ... ▲ ▼

sanity check 222 M bilinear 5.5993

Y direction ... ◄ ►

Interpolated 1.5 21.5 M bilinear 5.1384