Problem 44314. A Simple Tide Gauge with MATLAB

Created by AMITAVA BISWAS

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:rPr><w:b/></w:rPr><w:t>&amp;#8767 &amp;#8767 &amp;#8767 &amp;#8767 &amp;#8767 &amp;#8767 &amp;#8767 &amp;#8767</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>You are standing in a few inches of sea water on a beach.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>You are wondering whether the high tide is coming soon or it has just passed.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Therefore, you will write a code in MATLAB to analyze following data.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>You followed the sequence of water lines left by several swash of waves.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>The data array A contains the distances the water traveled past your feet during each upward swash of waves.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Your code will return 1 if the high tide is coming soon.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Your code will return 0 if the high tide has just passed.</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

728 Solutions
350 Solvers

Last Solution submitted on Jun 14, 2021

Last 200 Solutions

Problem Comments

2 Comments

2 Comments

Shibabrat on 8 Dec 2017

Is there a reference, that I can use, for predicting high/low tide from the water line height? I don't want to construct a solution based on the test suite data.

Rafael S.T. Vieira on 2 Jul 2020

We can use derivatives for predicting the high tide (diff) when we can assume that a function is increasing or decreasing (even with some noise).

Solution Comments

Solution 1305556

2 Comments

2 Comments

Ashley Goddard on 20 Oct 2017

I would love to see some better solutions than my cheat!

Danuanping on 21 Dec 2017

what about tide=A(1)<10 !

Solution 1289911

1 Comment

1 Comment

James on 16 Oct 2017

Lots of ways to get the right answer for this test suite...but I think this is one of the silliest.

Problem Recent Solvers350

Problem Tags

beach cody5 earth ebb forecast moon ocean prediction regression sun tide

Community Treasure Hunt

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

Start Hunting!