Extracting ranges of data from a column

18 views (last 30 days)

Show older comments

Sarahtxtr8 on 15 Jun 2022 at 12:57

Commented: Sarahtxtr8on 15 Jun 2022 at 13:23

Hello,

I am very new to matLab and I am trying to separate various speeds into new columns. I am having a hard time figuring out how to extract the various data points that correspond to the approriate zones. With the last line of code I am getting the error of "Brace indexing is not supported for variables of this type."

Any help is greatly aprreciated.

                          
                          copydata from excel into new variable entitled SpRaw
                         
                          Speed=downsample(SpRaw,10);
                         
                          SpLen=length(Speed);
                         
                          % Determine Time array
                         
                          fori=1:1:SpLen
                         
                          Time(i,1)=i*0.1;
                         
                          end
                         
                          % Grouping speed and time into appropriate zones
                         
                          % zone 1, standing (0 m·s−1),
                         
                          % zone 2, walking (1.67 – 2.1 m·s−1),
                         
                          %区3,jogging (2.2 – 3.30 m·s−1),
                         
                          % zone 4, low-speed running (3.31 – 4.13 m·s−1),
                         
                          % zone 5, moderate-speed running (4.14 – 4.97 m·s−1),
                         
                          % zone 6, high-speed running (5 – 6.92 m·s−1),
                         
                          % zone 7, sprinting (> 6.93 m·s−1)
                         
                          % Extract rows from Speed if value in column1 is between value1 and value2
                         
                          rows = Speed{:, 1} > 1.67 & Speed{:, 1} < 2.1;