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bars at specific (x,y) points

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Michela Longhi
Michela Longhi 2017-10-12
回答： Star Strider 2017-10-12
I need to create a 3d bar plot with bars at specific (x,y) points. Where X and Y are the coordinates and the temperature column is the corresponding temperature value at each coordinate.
Can someone help me, please?
Thank you so much !!
Michela
X Y Temperature
3 28 26.711
4 28 26.711
5 28 26.532
5 27 26.532
5 26 26.711
5 25 26.532
5 24 26.352
5 23 26.352
5 22 26.711
5 21 26.352
5 20 26.173
5 19 26.173
5 18 26.173
5 17 26.173
5 16 26.173
5 15 26.352
5 14 26.352
5 13 26.173
5 12 26.352
5 11 26.173
5 10 25.993
5 9 25.993
5 8 26.173
5 7 26.173
5 6 26.173
5 5 25.814
5 4 25.993
5 3 26.173
5 2 26.173
5 1 25.993
5 0 25.814
4 0 25.993
3 0 25.993
2 0 25.993
1 0 26.173
0 0 26.173
0 1 26.173
0 2 26.352
0 3 26.173
0 4 26.173
0 5 26.352
0 6 26.352
0 7 26.532
0 8 26.352
0 9 26.352
0 10 26.532
0 11 26.711
0 12 26.711
0 13 26.711
0 14 26.891
0 15 27.071
0 16 26.891
0 17 26.891
0 18 27.071
0 19 27.071
0 20 27.071
0 21 27.071
0 22 27.071
0 23 27.071
0 24 27.43
0 25 27.071
0 26 27.25
0 27 27.25
0 28 27.25
0 29 27.071
0 30 27.071
0 31 27.25
0 32 27.071
0 33 27.25
0 34 27.25
0 35 27.25
0 36 27.25
0 37 27.25
0 38 27.25
0 39 27.25
0 40 27.609
0 41 27.43
0 42 27.43
0 43 27.609
0 44 27.43
0 45 27.609
0 46 27.43
0 47 27.43
0 48 27.43
0 49 27.789
0 50 27.609
0 51 27.609
0 52 27.43
0 53 27.43
0 54 27.25
0 55 27.43
0 56 27.43
0 57 27.25
0 58 27.071
0 59 27.25
0 60 27.25
1 60 27.43
2 60 27.43
3 60 27.43
4 60 27.25
5 60 27.25
5 59 27.43
5 58 27.25
5 57 27.25
5 56 27.25
5 55 27.43
5 54 27.43
5 53 27.25
5 52 27.43
5 51 27.43
5 50 27.25
5 49 27.071
5 48 27.25
5 47 27.43
5 46 27.25
5 45 27.25
5 44 27.25
5 43 27.25
5 42 27.071
5 41 27.43
5 40 27.25
5 39 27.25
5 38 27.25
5 37 27.25
5 36 27.25
5 35 27.25
  1 个评论
dpb
dpb 2017-10-12
Matlab can't do that out of the box... :( bar3() is seriously weak in its abilities.
Might search on File Exchange...

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采纳的回答

KL
KL 2017-10-12
You need to store the temperature values in a 2D matrix considering x, y values as row and column indices. For example,
data = [3 28 26.711
4 28 26.711
5 28 26.532
5 27 26.532
5 26 26.711];
barData = zeros(max(data(:,1)),max(data(:,2)));
for k = 1:length(data(:,1))
barData(data(k,1),data(k,2))=data(k,3);
end
bar3(barData)
But remember, you have 0 in x and y coordinates, that's not possible this way. You need to include an offset for this case.

更多回答（1 个）

Star Strider
Star Strider 2017-10-12
If ‘D’ are your data, so that ‘D(:,1)=X’, ‘D(:,2)=Y’, ‘D(:,3)=T’, try this:
H3 = accumarray(D(:,[1 2])+1, D(:,3), [], @mean);
X = min(D(:,1)):max(D(:,1));
Y = min(D(:,2)):max(D(:,2));
figure(1)
bar3(H3)
grid on

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