How can I plot scatter graphs in a for loop?
14 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
I have a large data set. I am trying to use a for lop, to be able to select which coloumn i want to keep and which ones i want to discard, all depending on the user input.
I managed to do that part, i believe.
Now I am trying to get an average value for each coloumn and plot the results in a scatter graph. I tried to do this using a for loop.
But there is only one data set that appears on my scatter graph, so I assume it cancels the ones that were before that last point. I used hol all, hold on and draw now, but could not get it to work. Also I would like add a line of best fit for the scatter graph for each data set and save slope and intercept numbers in a table.
I managed to do do the line of best fit and slope, intercept before, but not since I am trying to use for loops, so I put my old code segments in a comented out section.
In the first version of the code, i just determined the coloumns ( channels ) i want to use in the code, not depending on user input.
I cannot upload the excel file that I use, because it is too big. i tried to compress, but did not work
0 commentaires
Réponses (1)
David Hill
le 11 Nov 2019
Assume you have your data in a matrix, M. Assume you want a scatter plot of the column vs. mean of each column.
scatter(1:size(M,2),mean(M));
4 commentaires
Helder Maranhão
le 29 Mar 2022
Modifié(e) : Rik
le 8 Avr 2022
Hi. I think understand the question. I have the same issue.
Imagine that you have a for loop
n=1
for k=1:20
y=n+1
n=n+1
end
scatter(k,y)
So imagine that you want to plot the y for each k from 1 to 20.
But in Matlab it will appear the last value for k.
How can we plot k from 1 to 20?
Could someone help?
Thank you
Rik
le 8 Avr 2022
@Helder Maranhão your code overwrites the value of each parameter every iteration. You should learn to use arrays.
Voir également
Catégories
En savoir plus sur Discrete Data Plots dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!