Problem 626. Make blocks of color

Created by Doug Hull

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>Given a (Nx3) sequence of RGB colors, I want to create a (numRowBlocks x numColBlocks x 3) image comprising (blockSize x blockSize) blocks of those colors in a (numRowBlocks x numColBlocks) pattern.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>i.e. for this signature: makeColorBlocks(blockSize, numColBlocks, numRowBlocks, RGBvec)</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>(Using a weird RGB to make the point)</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[ >> makeColorBlocks(2, 3, 2, [1 11 10;2 22 20; 3 33 30; 4 44 40; 5 55 50; 6 66 60])\n\nans(:,:,1) =\n\n 1 1 2 2 3 3\n 1 1 2 2 3 3\n 4 4 5 5 6 6\n 4 4 5 5 6 6\n\nans(:,:,2) =\n\n 11 11 22 22 33 33\n 11 11 22 22 33 33\n 44 44 55 55 66 66\n 44 44 55 55 66 66\n\nans(:,:,3) =\n\n 10 10 20 20 30 30\n 10 10 20 20 30 30\n 40 40 50 50 60 60\n 40 40 50 50 60 60]]></w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Though it can not be mechanically graded as such, I am looking for easy to read an understand code. Something easy to understand is preferred. Thanks to</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"http://blogs.mathworks.com/pick/\"><w:r><w:t>Brett</w:t></w:r></w:hyperlink><w:r><w:t> for the question.</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>"}]}

Given a (Nx3) sequence of RGB colors, I want to create a (numRowBlocks x numColBlocks x 3) image comprising (blockSize x blockSize) blocks of those colors in a (numRowBlocks x numColBlocks) pattern.i.e. for this signature:
 makeColorBlocks(blockSize, numColBlocks, numRowBlocks, RGBvec)(Using a weird RGB to make the point)<pre> >> makeColorBlocks(2, 3, 2, [1 11 10;2 22 20; 3 33 30; 4 44 40; 5 55 50; 6 66 60])</pre><pre class="language-matlab">ans(:,:,1) =
</pre><pre> 1 1 2 2 3 3
 1 1 2 2 3 3
 4 4 5 5 6 6
 4 4 5 5 6 6</pre><pre class="language-matlab">ans(:,:,2) =
</pre><pre> 11 11 22 22 33 33
 11 11 22 22 33 33
 44 44 55 55 66 66
 44 44 55 55 66 66</pre><pre class="language-matlab">ans(:,:,3) =
</pre><pre> 10 10 20 20 30 30
 10 10 20 20 30 30
 40 40 50 50 60 60
 40 40 50 50 60 60</pre>Though it can not be mechanically graded as such, I am looking for easy to read an understand code. Something easy to understand is preferred. Thanks to <a href="http://blogs.mathworks.com/pick/">Brett</a> for the question.

Given a (Nx3) sequence of RGB colors, I want to create a (numRowBlocks x numColBlocks x 3) image comprising (blockSize x blockSize) blocks of those colors in a (numRowBlocks x numColBlocks) pattern.

i.e. for this signature:
  makeColorBlocks(blockSize, numColBlocks, numRowBlocks, RGBvec)

(Using a weird RGB to make the point)

>> makeColorBlocks(2, 3, 2, [1 11 10;2 22 20; 3 33 30; 4 44 40; 5 55 50; 6 66 60])
  
  ans(:,:,1) =
  
      1    1    2    2    3    3
      1    1    2    2    3    3
      4    4    5    5    6    6
      4    4    5    5    6    6
  
  
  ans(:,:,2) =
  
     11   11   22   22   33   33
     11   11   22   22   33   33
     44   44   55   55   66   66
     44   44   55   55   66   66
  
  
  ans(:,:,3) =
  
     10   10   20   20   30   30
     10   10   20   20   30   30
     40   40   50   50   60   60
     40   40   50   50   60   60

Though it can not be mechanically graded as such, I am looking for easy to read an understand code. Something easy to understand is preferred. Thanks to <http://blogs.mathworks.com/pick/ Brett> for the question.

Solve

Solution Stats

174 Solutions
50 Solvers

Last Solution submitted on Oct 23, 2022

Last 200 Solutions

Problem Comments

Solution Comments

Solution 181909

1 Comment

1 Comment

Alfonso Nieto-Castanon on 27 Dec 2012

this is the commented version of my previous entry (solution 181910)

Solution 82743

1 Comment

1 Comment

@bmtran (Bryant Tran) on 26 Apr 2012

this is my original submission modified for ease of reading

Solution 82734

1 Comment

1 Comment

@bmtran (Bryant Tran) on 26 Apr 2012

whoops, didn't see your thing about "easy to understand code."

Problem Recent Solvers50

Problem Tags

Community Treasure Hunt

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

Start Hunting!

Problem 626. Make blocks of color

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers50

Suggested Problems

More from this Author51

Problem Tags

Community Treasure Hunt

Problem 626. Make blocks of color

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers50

Suggested Problems

More from this Author51

Problem Tags

Community Treasure Hunt

Players