find the interpolation of two values.

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solleti prabhakarchary
回答： Image Analyst 2022-10-8
how to find values for this data in between
6 1.256 1.365 0.358 2.589 2.365 2.365 2.456
8 3.250 3.255 3.62 1.25 1.256 2.321 3.214
i would like to find values for 6.5, 7, 7.5 using matlab. which command need to be used please help me in this code.

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Image Analyst
Image Analyst 2022-10-8
Ran in:
See if this is what you want. You can use linspace to make the 2 rows into 5 rows:
m = [...
6 1.256 1.365 0.358 2.589 2.365 2.365 2.456
8 3.250 3.255 3.62 1.25 1.256 2.321 3.214];
[rows, columns] = size(m);
m2 = zeros(rows + 3, columns);
for col = 1 : size(m, 2)
m2(:, col) = linspace(m(1, col), m(2, col), 5);
end
m2
m2 = 5×8
6.0000 1.2560 1.3650 0.3580 2.5890 2.3650 2.3650 2.4560 6.5000 1.7545 1.8375 1.1735 2.2542 2.0878 2.3540 2.6455 7.0000 2.2530 2.3100 1.9890 1.9195 1.8105 2.3430 2.8350 7.5000 2.7515 2.7825 2.8045 1.5848 1.5333 2.3320 3.0245 8.0000 3.2500 3.2550 3.6200 1.2500 1.2560 2.3210 3.2140

更多回答（1 个）

Ghazwan
Ghazwan 2022-10-8
You need to have X and Y vector arrays. The X values need to incapsulate the requested points. You may use interp1 fucntion. For example:
X=[6 1.256 10 ];
Y=[8 3.250 8.5 ];
Ynew = interp1(X,Y,[6.5, 7, 7.5])

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