Filter löschen
Filter löschen

Calculate number appearance within a range

8 Ansichten (letzte 30 Tage)
Ancalagon8
Ancalagon8 am 19 Jan. 2023
Kommentiert: Star Strider am 25 Jan. 2023
I need help calculating the number of times a number appears within a range. To be more specific, I need to specify how many times TT values are between [1, 2], then between (2, 10], then between (10, 20], then between (20, 50] then between and (50, 100].
classes=[1 2 10 20 50 100];
count=hist(TT,classes);

Akzeptierte Antwort

Star Strider
Star Strider am 19 Jan. 2023
The histcounts and histogram functions are perfect for this —
LD = load(websave('TT','https://www.mathworks.com/matlabcentral/answers/uploaded_files/1268555/TT.mat'));
TT = LD.TT
TT = 31×1
0 1.0000 14.9000 8.7000 1.0000 0 0 0 40.2000 10.3000
Edges = [1 2 10 20 50 100];
[BinCounts,Edges,Bin] = histcounts(TT, Edges);
BinCounts
BinCounts = 1×5
2 4 5 4 0
figure
histogram(TT, Edges)
xticks(Edges)
grid
xlim([min(Edges) max(Edges)])
xlabel('Bin Limits')
ylabel('Counts')
Thi histogram plot gives a better depiction of the bin limits than a bar plot of the histcounts results would.
.
  17 Kommentare
Askic V
Askic V am 25 Jan. 2023
@Star Strider can you please explain, how you upload file and use load command in th code, just like in the example
load(websave('TT','https://www.mathworks.com/matlabcentral/answers/uploaded_files/1268555/TT.mat'));
Star Strider
Star Strider am 25 Jan. 2023
@Askic V — That is exactly how I do it, although I always load into a output variable so that I have some control over what loads, and so I can change the name of the variable used in the subsequent script if necessary. (Since I rarely use websave, credit for discovering this goes to @Karim, who was appropriately rewarded for discovering it.)

Melden Sie sich an, um zu kommentieren.

Weitere Antworten (1)

Askic V
Askic V am 19 Jan. 2023
Perhaps this code snippet will help you:
load TT
classes = [1 2 10 20 50 100];
tol = 1e-10;
res = zeros(size(diff(classes)));
for i = 1:numel(classes)-1
res(i) = sum(TT >= classes(i)-tol & TT < classes(i+1)+tol);
end
res

Kategorien

Mehr zu Line Plots 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!

Translated by