How to draw the contour lines in MATLAB.

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SARVESH R
SARVESH R 2021-2-23
评论： Walter Roberson 2021-2-25
Can any any one help me how to draw the contour lines in MATLAB. I have data in Excel. i Need to draw contour lines for 0.1, 0.2 till 1.

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Walter Roberson
Walter Roberson 2021-2-24
data = readmatrix('Sai.xlsx');
contour(data, 0.1:0.1:1)
colorbar
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SARVESH R
SARVESH R 2021-2-25
thank you very much sir. its working. sir is it possible to give the lables on the line i am using R2014aversion

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Benjamin Kraus
Benjamin Kraus 2021-2-23
The answer depends in part on how the data is formatted in Excel, but something like this should get you started (see attached spreadsheet):
tbl = readtable('Peaks.xlsx');
contour(tbl.Variables,0.1:0.1:1);
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Benjamin Kraus
Benjamin Kraus 2021-2-24
If you replace Peaks.xlsx with Sai.xlsx, my example code seems to work fine on your data.
tbl = readtable('Sai.xlsx');
contour(tbl.Variables,0.1:0.1:1);
If you ran into some issue with that code, could you give more detail? For example, what error messages did you get? Did the picture not look like you expected?
SARVESH R
SARVESH R 2021-2-24
Sir i got an error like this
Warning: Variable names were modified to make them valid MATLAB identifiers.
> In makeValidName at 25
In @table\private\setVarNames at 48
In table.readXLSFile at 113
In table.readFromFile at 35
In readtable at 118
In Contour at 2
Error using table/subsrefDot (line 76)
Unrecognized variable name 'variables'.
Error in table/subsref (line 62)
[varargout{1:nargout}] = subsrefDot(t,s);
Error in Contour (line 6)
contour(tbl.variables,0.1:0.1:1)

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SARVESH R
SARVESH R 2021-2-24
Sir i would like to draw the contour lines for 0.9, 0.8,0.7, 0.6,0.5,0.4,0.3,0.2 and 0.1

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