Problem 86. Renaming a field in a structure array

Created by Cody Team

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>MATLAB has a</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"http://www.mathworks.com/help/techdoc/ref/setfield.html\"><w:r><w:t>setfield</w:t></w:r></w:hyperlink><w:r><w:t> and a</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"http://www.mathworks.com/help/techdoc/ref/rmfield.html\"><w:r><w:t>rmfield</w:t></w:r></w:hyperlink><w:r><w:t>, but not a \"rename field\". You need to write one for this problem.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:rPr><w:b/></w:rPr><w:t>Example</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Suppose</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[ s(1).foo = 1;\n s(1).bar = 'one';\n s(2).foo = 2;\n s(2).bar = 'two';]]></w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>and you want the field \"bar\" to be renamed \"baz\". Given the inputs s, oldField, and newField, you must return this output structure with all the data still in place.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[ s(1).foo = 1;\n s(1).baz = 'one';\n s(2).foo = 2;\n s(2).baz = 'two';]]></w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>[Problem from Matthew Simoneau]</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

2236 Solutions
1048 Solvers

Last Solution submitted on Aug 13, 2022

Last 200 Solutions

Problem Comments

2 Comments

2 Comments

Jan on 27 Feb 2012

Does "All the data still" mean, that the fields are not re-ordered? A lot of the solutions change the order of the fields.

Rafael S.T. Vieira on 12 Jun 2020

Currently, Matlab has the function renameStructField.

Solution Comments

Solution 6624569

Solution 187060

1 Comment

1 Comment

Jason Nicholson on 6 Jan 2013

When I run the test suite on my computer, this solution works. It passes the test suite.

Solution 28043

1 Comment

1 Comment

Jan on 27 Feb 2012

This fails, if the fieldname to be replaced appears as part of another fieldname. Example: S.ab=1; S.a=2; renamefield(S, 'a', 'c')

Problem Recent Solvers1048

Problem Tags

Community Treasure Hunt

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

Start Hunting!

Problem 86. Renaming a field in a structure array

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers1048

Suggested Problems

More from this Author95

Problem Tags

Community Treasure Hunt

Problem 86. Renaming a field in a structure array

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers1048

Suggested Problems

More from this Author95

Problem Tags

Community Treasure Hunt

Players