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Faster Looping for Griding/Binning Data

조회 수: 2 (최근 30일)
edward kabanyas
edward kabanyas 2020년 10월 31일
답변: Bruno Luong 2020년 11월 1일
Hi all;
I want to grid my data with following code:
Lat=data(:,7);
Lon=data(:,8);
vprg=data(:,9);
test1=[vprg Lon Lat];
latedges=-10:0.1:10;
lonedges=80:0.1:160;
test2 = zeros(numel(lonedges)-1,numel(latedges)-1);
for i=1:numel(lonedges)-1,
for j=1:1:numel(latedges)-1,
test2(i,j)=size(test1(test1(:,2)>=lonedges(i) & test1(:,2)< lonedges(i+1) & test1(:,3)>= latedges(j) & test1(:,3)< latedges(j+1),:),1);
end
end
However, it is very slow. Probably, there is another option to make it faster. Thank you for your hep.
EK

채택된 답변

Bruno Luong
Bruno Luong 2020년 11월 1일
test2 = histcounts2(test1(:,2),test1(:,3),lonedges,latedges)

추가 답변 (1개)

Sindar
Sindar 2020년 11월 1일
check out discretize

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