bars at specific (x,y) points

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

[dpb]

Matlab can't do that out of the box... :( bar3() is seriously weak in its abilities.

Might search on File Exchange...

Answer 1

[KL]

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.

Answer 2

[Star Strider]

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