Problem 180. Omit columns averages from a matrix

Created by Roy Fahn

Solve Later

{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","targetMode":"","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","targetMode":"","relationshipId":"rId2","target":"/matlab/output.xml"}],"parts":[{"partUri":"/matlab/document.xml","relationship":[],"contentType":"application/vnd.mathworks.matlab.code.document+xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<w:document xmlns:w=\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\"><w:body><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Omit columns averages from a matrix.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>For example: A =</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[    16     2     3    13\n     5    11    10     8\n     9     7     6    12\n     4    14    15     1]]></w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>mean_of_each_column = 8.5000 8.5000 8.5000 8.5000</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Result=</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[     7.5000   -6.5000   -5.5000    4.5000\n\n    -3.5000    2.5000    1.5000   -0.5000\n\n     0.5000   -1.5000   -2.5000    3.5000\n\n    -4.5000    5.5000    6.5000   -7.5000]]></w:t></w:r></w:p></w:body></w:document>"},{"partUri":"/matlab/output.xml","contentType":"text/xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><embeddedOutputs><metaData><evaluationState>manual</evaluationState><layoutState>code</layoutState><outputStatus>ready</outputStatus></metaData><outputArray type=\"array\"/><regionArray type=\"array\"/></embeddedOutputs>"}]}

Solve

Solution Stats

838 Solutions
527 Solvers

Last Solution submitted on Jan 01, 2021

Last 200 Solutions

Problem Comments

3 Comments

3 Comments

James White on 22 Jul 2013

The test suite should include a matrix where the columns have different averages. Also, I think that "subtract" would be easier to understand than "omit".

Georges on 16 Sep 2014

Totally agree with James!!!

Gabor Bekes on 29 Jul 2016

Ctrl-C, Ctrl-V from bsxfun's help. Exactly how I like it!

Problem Recent Solvers527

Problem Tags

columns matrix

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Problem 180. Omit columns averages from a matrix

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers527

Suggested Problems

More from this Author1

Problem Tags

Community Treasure Hunt

Problem 180. Omit columns averages from a matrix

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers527

Suggested Problems

More from this Author1

Problem Tags

Community Treasure Hunt

Players