how to plot from CSV files?

Hi all,

I have some data as CSV and want to plot the time (col. 1,2) in x-axis with temperature (col. 3) in y-axis (screenshot)

how to :

• access the data
• plot the data

thanks!!

Answer 1

[Star Strider]

It would help to have your data rather than an image of it.

In the interim, try something like this —

imshow(imread('Screen Shot 20....42.20 PM.png'))

% T1 = readtable('YourFile.csv')
T1 = table(['16/02/2024';'16/02/2024'], ["11:37:39AM"; "11:37:40AM"], [11.9420; 11.9440], 'VariableNames',{'LogInterval','VarName2','VarName3'})

T1 = 2x3 table
    LogInterval      VarName2      VarName3
    ___________    ____________    ________

    16/02/2024     "11:37:39AM"     11.942 
    16/02/2024     "11:37:40AM"     11.944 

LogTime = datetime(T1.LogInterval, 'InputFormat','dd/MM/yyyy') + timeofday(datetime(T1.VarName2,  'InputFormat','hh:mm:ssa'))

LogTime = 2x1 datetime array
   16-Feb-2024 11:37:39
   16-Feb-2024 11:37:40

LogTime.Format = 'yyyy/MM/dd HH:mm:ss'

LogTime = 2x1 datetime array
   2024/02/16 11:37:39
   2024/02/16 11:37:40

T1 = addvars(T1, LogTime, 'Before',1)

T1 = 2x4 table
          LogTime          LogInterval      VarName2      VarName3
    ___________________    ___________    ____________    ________

    2024/02/16 11:37:39    16/02/2024     "11:37:39AM"     11.942 
    2024/02/16 11:37:40    16/02/2024     "11:37:40AM"     11.944 

T1 = removevars(T1,[2 3])

T1 = 2x2 table
          LogTime          VarName3
    ___________________    ________

    2024/02/16 11:37:39     11.942 
    2024/02/16 11:37:40     11.944 

VN = T1.Properties.VariableNames;

figure
plot(T1.LogTime, T1.VarName3)
grid
xlabel(VN{1})
ylabel(VN{2})

That should work.

.

[Lilya]

thank you very much!! it works

[Star Strider]

As always, my pleasure!