Why is my "plot" function not working?
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
William
am 26 Mär. 2023
Kommentiert: Star Strider
am 26 Mär. 2023
T = readtable('ELG3155_LAB3_part2_M_2V.xlsx', 'PreserveVariableNames', true);
x = T.("Time (ms)");
y = T.("Raw speed (mrad/s)");
grid on;
plot(x,y);
When i run this it says there is an error with my plot function, why?
2 Kommentare
Matt J
am 26 Mär. 2023
We can't run the code (because it's an image and because the data hasn't been provided)
Akzeptierte Antwort
Star Strider
am 26 Mär. 2023
Bearbeitet: Star Strider
am 26 Mär. 2023
EDIT — (26 Mar 2023 at 10:28)
T = readtable('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1336464/ELG3155_LAB3_part2_M_2V.xlsx', 'VariableNamingRule','preserve');
VN = T.Properties.VariableNames;
x = T.("Time (ms)");
y = str2double(T.("Raw speed (mrad/s)"));
figure
plot(x,y)
xlabel(VN{1})
ylabel(VN{3})
grid on
.
2 Kommentare
Weitere Antworten (1)
Walter Roberson
am 26 Mär. 2023
The first row has time 00. That is text not numeric.
Looking at the left justification it looks to me as if the second column is text rather than numeric.
1 Kommentar
Walter Roberson
am 26 Mär. 2023
I checked in Excel itself, and sure enough, the 00 gives a warning about "Number stored as text", and all of columns 2, 3, 4 report the same thing.
If you use readmatrix() then everything will be converted to numeric.
Note: with default options, the 00 0 0 0 row will be detected as being header and will be skipped.
Siehe auch
Kategorien
Mehr zu Spreadsheets finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!