how to fill pre allocated matrix using two columns vectors

1 vue (au cours des 30 derniers jours)
M.S. Khan
M.S. Khan le 26 Juin 2019
Commenté : erik jensen le 28 Avr 2020
Matrix = zeros(5)
interval range =10
X = [ 35;43;22]
Y = [75;44;67]
40
50
Y 60
70
80
10 20 30 40 50
X - axis
how to fix these values inside the above grid using matlab coding.
i have tried a lot using for loops but its not comming correct.
All cooperation is highly appreicated.
Regards
  1 commentaire
Shashank Sharma
Shashank Sharma le 26 Juin 2019
It is unclear as to what you are attempting.
What is the expected output of your code ?

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Réponse acceptée

Andrei Bobrov
Andrei Bobrov le 26 Juin 2019
xx = 10:10:50;
yy = 40:10:80;
X = [ 35;43;22];
Y = [75;44;67];
m = numel(xx);
n = numel(yy);
out = zeros(m,n);
x10 = 10*floor(X/10);
y10 = 10*floor(Y/10);
[~,ii] = ismember(x10,xx);
[~,jj] = ismember(y10,yy);
out(sub2ind([m,n], ii, jj)) = 1;
  3 commentaires
M.S. Khan
M.S. Khan le 17 Juil 2019
Thanks for giving me input,. i have done it succesfully.
Could you plz guide me how to only label the interior part of the object using same techniqure.
Same question but only need the interior part to be labelled as 2 or 1.
i will be very thankful.
warm regards
erik jensen
erik jensen le 28 Avr 2020
This is wrong.
ii, jj, and kk are INDEXES not SUBSCRIPTS. So for a larger data set, would fall out of range

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Plus de réponses (2)

KSSV
KSSV le 26 Juin 2019
X = [ 35;43;22] ;
Y = [75;44;67] ;
[X,Y] = meshgrid(X,Y);

madhan ravi
madhan ravi le 26 Juin 2019
% Illustration
Matrix = zeros(5);
X = (10:10:50).'; % column vectors
Y = (40:10:80).';
Matrix(end,:) = X.';
Matrix(:,1) = Y
  5 commentaires
M.S. Khan
M.S. Khan le 26 Juin 2019
Modifié(e) : madhan ravi le 26 Juin 2019
results will be like this:
madhan ravi
madhan ravi le 26 Juin 2019
Honestly, how are the certain fields yellow?

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