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I want to plot a 2D matrix with a color contrast.

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Anshuman S
Anshuman S on 18 Jun 2018
Commented: Walter Roberson on 18 Jun 2018
I've got a spreadsheet ( 2-D matrix ) which has got temperature readings of various points on a 2-D plane. How can I plot a color variation temp. profile plot for this matrix.
I have uploaded the csv file.

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Answers (1)

Walter Roberson
Walter Roberson on 18 Jun 2018
Several possibilities:
imagesc(data)
contour(data)
contourf(data)
pcolor(data)
surf(data, 'edgecolor', 'none'); view(2);

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Walter Roberson
Walter Roberson on 18 Jun 2018
If the content is like what you have in the csv then,
data = test123{:,:};
and then proceed.
Anshuman S
Anshuman S on 18 Jun 2018
Thanks ! May you tell me about the theory for this !
Walter Roberson
Walter Roberson on 18 Jun 2018
When you have a table, then using {} indexing on it extracts values from the table into ordinary arrays.
You should probably have asked for selected output type as numeric array instead of table for this data, as it is a 2D array of data instead of being columns of data each with a different meaning.

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