get values proportional to most occurence

1 vue (au cours des 30 derniers jours)
Jack
Jack le 29 Mar 2011
here is my code
%Display the transform axes(handles.axes14); imshow(imadjust(mat2gray(H)),[],'XData',theta,'YData',rho,... 'InitialMagnification','fit'); xlabel('\theta (degrees)'), ylabel('\rho'); axis on, axis normal, hold on; x=theta(P(:,2)); [occ,ent]=hist(x,unique(x));
this will give me 1000 peaks as i chose 1000 for peaks
now i want to only filter out values which have an occurence more than 10 for a certain value of theta. i am quite new to matlab.
so that these are the values that are plotted on the matrix and not all the peaks are plotted on the matrix.
if you understand what i am trying to explain
y = rho(P(:,1)); plot(x,y,'s','color','red');
  1 commentaire
Gautam Vallabha
Gautam Vallabha le 29 Mar 2011
Please don't include extraneous material in your question (such as the IMSHOW and PLOT statements).
I assume your question is that you have:
[occ,ent] = hist(x, unique(x));
and you want to only extract those values of ENT where OCC > 10.

Connectez-vous pour commenter.

Réponse acceptée

Gautam Vallabha
Gautam Vallabha le 29 Mar 2011
You can use the FIND command to identify indices that match a criterion. For example:
x = ceil(rand(1,5000)*100); % make some sample data
[occ,ent] = hist(x,unique(x)); % get the counts
Find indices where occurrences are greater than 10
indices = find(occ > 10);
Extract the associated entries
filteredOccurreces = occ(indices);
filteredEntries = ent(indices);

Plus de réponses (1)

Jack
Jack le 30 Mar 2011
Thanks
i already figured it out. i used the same command you said i got it from this site so i used that to get values which occured the most. i joined occ and ent on each column for same variable so row 1 will show entry and the number of occurance. i then look for most occurance and get the corresponding column number of the entry. place the values in a new variable.
then i place x and y in 2 row variable so i can look for the theta value in x and get the corresponding y value then separate the x and y variable and then plot it on the matrix.

Catégories

En savoir plus sur Image Processing Toolbox dans Help Center et File Exchange

Produits

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by