How to plot pcolor in matlab

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vignesh mohan 2021-12-9

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链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1606970-how-to-plot-pcolor-in-matlab

评论： vignesh mohan 2021-12-13

在 MATLAB Online 中打开

Hello everyone,

i want to plot pcolor plot in matlab but i tried i cannot do it. I add my data here and code also

x = [13-04-2021 00:00 13-04-2021 01:00 13-04-2021 02:00 13-04-2021 03:00 13-04-2021 04:00] like this till 14-04-2021 23:00:00

y = [10.23 11.16 12.19 13.31 14.54 15.88 17.35 18.96 20.72 22.66 24.77 27.1 29.65 32.45 35.53 38.92 42.65 46.77 51.32]

z = [2.27E+03 3.94E+03 4.48E+03 6.26E+03 3.18E+03 3.78E+03 5.37E+03 5.60E+03 6.35E+03 8.47E+03 1.05E+04 1.05E+04

1.36E+04 1.12E+04 8.48E+03 3.96E+03 5.84E+03 4.55E+03 3.65E+03 6.17E+03 7.48E+03 6.98E+03 9.84E+03 1.11E+04

5.72E+04 6.90E+04 5.64E+04 4.71E+04 1.94E+04 6.37E+03 6.59E+03 6.89E+03 8.81E+03 9.70E+03 8.11E+03 9.59E+03

1.26E+04 1.34E+04 1.69E+04 1.99E+04 2.18E+04 2.62E+04 2.98E+04 9.09E+03 5.16E+03 8.73E+03 3.96E+03 4.95E+03

5.16E+03 4.06E+03 4.24E+03 6.17E+03 7.99E+03 8.20E+03 6.68E+03 1.07E+04 1.24E+04 1.36E+04 1.78E+04 1.89E+04]

my x data is in one range and y is in another range and my z data is in different size range.

how to plot that graph?

i hope i will get the answer for this thank you in advance.

[x,y] = meshgrid(x,y);
Pcolor(x,y,z);

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Walter Roberson 2021-12-9

在 MATLAB Online 中打开

xd  = {'13-04-2021 00:00' '14-04-2021 23:00'};
xdt = datetime(xd, 'InputFormat', 'dd-MM-yyyy HH:mm');
x = xdt(1) : hours(1) : xdt(2);
y = [10.23  11.16  12.19  13.31  14.54  15.88  17.35  18.96  20.72  22.66  24.77  27.1  29.65  32.45  35.53  38.92  42.65  46.77  51.32];
z = [2.27E+03  3.94E+03  4.48E+03  6.26E+03  3.18E+03  3.78E+03  5.37E+03  5.60E+03  6.35E+03  8.47E+03  1.05E+04  1.05E+04 
    1.36E+04  1.12E+04  8.48E+03  3.96E+03  5.84E+03  4.55E+03  3.65E+03  6.17E+03  7.48E+03  6.98E+03  9.84E+03  1.11E+04  
    5.72E+04  6.90E+04  5.64E+04  4.71E+04  1.94E+04  6.37E+03  6.59E+03  6.89E+03  8.81E+03  9.70E+03  8.11E+03  9.59E+03  
    1.26E+04  1.34E+04  1.69E+04  1.99E+04  2.18E+04  2.62E+04  2.98E+04  9.09E+03  5.16E+03  8.73E+03  3.96E+03  4.95E+03 
    5.16E+03  4.06E+03  4.24E+03  6.17E+03  7.99E+03  8.20E+03  6.68E+03  1.07E+04  1.24E+04  1.36E+04  1.78E+04  1.89E+04];
size(x)
ans = 1×2
     1    48
size(y)
ans = 1×2
     1    19
size(z)
ans = 1×2
     5    12

Your data is all different sizes; we cannot test with it, and we cannot figure out what you are trying to do.

vignesh mohan 2021-12-9

Hello Rik i had attached reference graph just have a look then you will get some idea

vignesh mohan 2021-12-9

Book1.xlsx

Hello Walter sir i had attached some sample data sheet also. my column name should come in my y-axis date will come in my x-axis remaining all will come in z-axis.

i hope you will help me to come out from this sir i tired many way.

Thank you

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回答（1 个）

Walter Roberson 2021-12-9

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1606970-how-to-plot-pcolor-in-matlab#answer_851435

在 MATLAB Online 中打开

filename = 'https://www.mathworks.com/matlabcentral/answers/uploaded_files/828415/Book1.xlsx';

T = readcell(filename);

x = [T{2:end,1}];

y = cell2mat(T(1,2:end));

z = cell2mat(T(2:end,2:end));

surf(x, y, z.', 'edgecolor', 'none');

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Rik 2021-12-9

在 MATLAB Online 中打开

Book1 = 'https://www.mathworks.com/matlabcentral/answers/uploaded_files/828415/Book1.xlsx';
%this line is only required if you're downloading the file, instead of
%using a local copy
Book1=websave('Book1.xlsx',Book1);
T = xlsread(Book1)
T = 85×20
	1.0e+05 *

       NaN    0.0001    0.0001    0.0001    0.0001    0.0001    0.0002    0.0002    0.0002    0.0002    0.0002    0.0002    0.0003    0.0003    0.0003    0.0004    0.0004    0.0004    0.0005    0.0005
    0.4431    0.0151    0.0091    0.0224    0.0156    0.0176    0.0182    0.0349    0.0275    0.0350    0.0307    0.0407    0.0434    0.0530    0.0514    0.0627    0.0736    0.0653    0.0668    0.0679
    0.4431    0.0284    0.0228    0.0224    0.0198    0.0248    0.0204    0.0250    0.0293    0.0350    0.0489    0.0350    0.0401    0.0505    0.0486    0.0641    0.0668    0.0708    0.0680    0.0634
    0.4431    0.0284    0.0243    0.0286    0.0282    0.0186    0.0212    0.0297    0.0269    0.0238    0.0316    0.0320    0.0428    0.0506    0.0476    0.0574    0.0607    0.0683    0.0654    0.0613
    0.4431    0.0132    0.0136    0.0212    0.0187    0.0230    0.0258    0.0256    0.0292    0.0345    0.0356    0.0379    0.0474    0.0501    0.0550    0.0608    0.0634    0.0653    0.0762    0.0631
    0.4431    0.0290    0.0263    0.0266    0.0250    0.0236    0.0340    0.0262    0.0310    0.0284    0.0318    0.0448    0.0415    0.0400    0.0548    0.0479    0.0628    0.0604    0.0693    0.0702
    0.4431    0.0398    0.0349    0.0473    0.0260    0.0274    0.0342    0.0430    0.0362    0.0311    0.0369    0.0283    0.0477    0.0422    0.0572    0.0577    0.0659    0.0640    0.0640    0.0718
    0.4431    0.0170    0.0182    0.0149    0.0093    0.0204    0.0251    0.0236    0.0263    0.0233    0.0261    0.0385    0.0418    0.0479    0.0545    0.0543    0.0587    0.0628    0.0654    0.0660
    0.4431    0.0208    0.0288    0.0099    0.0229    0.0123    0.0181    0.0303    0.0288    0.0335    0.0389    0.0406    0.0340    0.0482    0.0491    0.0525    0.0542    0.0564    0.0611    0.0685
    0.4431    0.0132    0.0152    0.0224    0.0156    0.0257    0.0235    0.0336    0.0217    0.0310    0.0375    0.0367    0.0398    0.0448    0.0481    0.0489    0.0546    0.0592    0.0676    0.0619

Walter Roberson 2021-12-13

在 MATLAB Online 中打开

Please show the output for

which -all surf

Your pvpairs are not even in the same order that I would expect for your release. I would expect

'XData'    [1x84 double]    'YData'    [1x19 double]    'ZData'    [19x84 double]    'Parent'    [1x1 Axes]

vignesh mohan 2021-12-13

在 MATLAB Online 中打开

>> surf(x, y, z.')
5      if ~isempty(pvpairs)
K>> which -all surf
C:\Program Files\MATLAB\R2016a\toolbox\matlab\graph3d\surf.m
C:\Program Files\MATLAB\R2016a\toolbox\mbc\mbctools\@sweepset\surf.m  % Shadowed sweepset method
K>> 