# i have two set of data for temperature measurements which vary depends on each other. the variation may be divided into three portions. how can we seperate these portions

2 views (last 30 days)
JINU SUDHAKARAN Mr on 12 Jun 2023
Edited: Alan Stevens on 12 Jun 2023
i have two set of data for temperature measurements which vary depends on each other. the variation may be divided into three portions maybe fisrt portion is linear and followed by a curved portion in the graph (may be exponential) and again linear increase. I also have the data for these two temperatures
JINU SUDHAKARAN Mr on 12 Jun 2023
The blue one is the important one. we need to select the region based on the blue one. initally a linear portion and then a curved portion. we need to divide the data exactly at the point in between these portion. how we can find that point?

Alan Stevens on 12 Jun 2023
Edited: Alan Stevens on 12 Jun 2023
Here's a possible way (assumes the data is already in the workspace):
minval = min(dT2(Time<2.5));
ix = find(dT2(Time<2.5)==minval);
T2lin = T2(1:ix); T2nonlin = T2(ix+1:end);
plot(Time(1:ix),T2lin,Time(ix+1:end),T2nonlin),grid

### Categories

Find more on Interpolation in Help Center and File Exchange

R2023a

### Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!