# Interpolation of data at each specific value in the variable

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댓글: Abdulkarim Almukdad 2020년 10월 21일
I have a data set of distance, speed and acceleration and I'm looking for a method to interpolate the data and get a new interpolated variable of distance - speed and another one for distance - acceleration. The issue is that I want the interrpoldation to be exactly at each 1 meter (i.e. 1m, 2m, 3m, 4m ......) also the data is arranged in ascending order but not fixed slope so i can't say interpolate after each 10th value. my question is how can I interpolate the data with respect to distance at each 1 meter in other words how to ask the matlab to interpolate the distance with speed when the distance reached 1 meter and take the distance exactly after or before the first time he reached 1 meter (i.e. in case of having 0.9 - 1.2- 1.5, thus it should take 1.2 and (0.9 or 1.5))

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### 채택된 답변

Ameer Hamza 2020년 10월 19일
See interp1(): https://www.mathworks.com/help/matlab/ref/interp1.html. You can probably do something like this
distanceQ = 1:max(distance); % new distance vector with step size of 1m
speedQ = interp1(distance, speed, distanceQ);
##### 댓글 수: 5표시숨기기 이전 댓글 수: 4
can you help me with the other question ? I just want a function to make the data from the csv file at 1 column go to the rest of the columns just like the function (text to columns) in excel.

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