Problem 868. Replace all zeros and NaNs in a matrix with the string 'error'

Created by Ken Deeley

Solve Later

{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","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\"?><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>Given a numeric input matrix A, possibly containing some zero values and some NaNs, replace any occurrences of zero or NaN with the character string 'error'. The output should be a cell array C of the same size as the input matrix. Each cell of the output cell array should either contain the corresponding entry of A if this is not zero or NaN, or the string 'error' otherwise.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/><w:jc w:val=\"left\"/></w:pPr><w:r><w:t>Example:</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/><w:jc w:val=\"left\"/></w:pPr><w:r><w:t>If A = [1 0; NaN 1], then the output C should be the cell array C = {1, 'error'; 'error', 1}.</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

234 Solutions
91 Solvers

Last Solution submitted on Apr 27, 2021

Last 200 Solutions

Problem Comments

2 Comments

2 Comments

Khaled Hamed on 29 Jul 2012

Any idea why b={1 0; nan 3}; isequal(b,b) gives false?

Khaled Hamed on 29 Jul 2012

Don't bother... nan is not equal to nan unless you use isequaln!

Solution Comments

Solution 181619

1 Comment

1 Comment

danteliujie on 14 Apr 2019

perfect

Solution 120221

2 Comments

2 Comments

Jean-Marie Sainthillier on 30 Jul 2012

Very nice.

Khaled Hamed on 30 Jul 2012

@Jean-Marie
This is simply a copyof the leading solution "Solution 119943"

Problem Recent Solvers91

Problem Tags

cell arrays cellfun logical indexing

Community Treasure Hunt

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

Start Hunting!

Problem 868. Replace all zeros and NaNs in a matrix with the string 'error'

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers91

Suggested Problems

More from this Author4

Problem Tags

Community Treasure Hunt

Problem 868. Replace all zeros and NaNs in a matrix with the string 'error'

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers91

Suggested Problems

More from this Author4

Problem Tags

Community Treasure Hunt

Players