Matrix browsing

[jorgesantin28]

Hello everyone i have a matrix which contains 7 columns first one is time in seconds, second one time in minutes, Columns 3 to 6 describe the result obtained per test. It has 6 test for whole data, Is there a way i can select from the matriz only the data of test 3 por example? (Every test describes the obtained results of values per time)

Thank you

[HanOostdijk]

Yes, you can do this with the aid of some packages.
Below you will find a stylized example

library(dplyr)
#> 
#> Attaching package: 'dplyr'
#> The following objects are masked from 'package:stats':
#> 
#>     filter, lag
#> The following objects are masked from 'package:base':
#> 
#>     intersect, setdiff, setequal, union
library(purrr)
library(magrittr)
#> 
#> Attaching package: 'magrittr'
#> The following object is masked from 'package:purrr':
#> 
#>     set_names

p <- data.frame(
  stringsAsFactors = F,
  time_min = 1:6,
  CH001 = c(0.1,-0.1,0,0.2,0.1,0.1),
  Test = c("Test1","Test1","Test1","Test2","Test2","Test2" )
)

tests <- unique(p$Test)

purrr::walk(tests,
    function (thistest)
      {
      thistestdata <- p %>%
        filter(Test == thistest)
      plot(thistestdata$time_min, thistestdata$CH001,
           main=thistest)
    })


Created on 2021-07-15 by the reprex package (v2.0.0)

[andresrcs]

Hi!

There are many approaches you can follow for this but to give you more specific examples, some sample data would be useful.

Can you please share a small part of the data set in a copy-paste friendly format?

In case you don't know how to do it, there are many options, which include:

1. If you have stored the data set in some R object, dput function is very handy.

2. In case the data set is in a spreadsheet, check out the datapasta package. Take a look at this link.

[jorgesantin28]

Thank you im gonna prove it now