# how to interpolate x with y and vice versa ?

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Manoj el 14 de Sept. de 2018
Comentada: ANKUR KUMAR el 15 de Sept. de 2018
Find the attachment consists of two columns. 1st column should be interpolated with 2nd column and 2nd column should be interpolated with 1st column.
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ANKUR KUMAR el 14 de Sept. de 2018
Try using interp2, spline or pchip. "interpolate first coloumn with second" ????
Lets see an example. A contains the data over 10 points. If you want to interpolate A on finer intervals (say in interval of 0.1), then code would like like:
A=randi(10,1,10);
interp1((1:10),A,(1:0.01:10))
spline((1:10),A,(1:0.01:10))
pchip((1:10),A,(1:0.01:10))
Above are the three different methods of interpolating linear matrix.
Hope you can relate this simple example with your problem.
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Manoj el 15 de Sept. de 2018
2nd column consist of 6862 values (i.e up to 18.8) I need to interpolate these 6862 values with 1st column up to 64 values (i.e up 18.9). so that 6862 values should equals to 64 values .
ANKUR KUMAR el 15 de Sept. de 2018
First input of interp, spline or pchip must be either decreasing or increasing. Read these ( a , b , c ) documentation for details

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