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David Legland


INRA, France

Last seen: Today Con actividad desde 2010

Research engineer in computer sciences, more precisely image processing and applied statistics. Interested in image analysis, geometrical modelling, image registration problems, estimation in discrete images, and polyhedral reconstruction. web page: http://www.pfl-cepia.inra.fr/ (in french) See also: http://github.com/mattools/matGeom http://github.com/mattools/matImage Professional Interests: image analysis, applied statistics, geometric computing, registration

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Resuelto


Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Example...

más de 8 años hace

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Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

más de 8 años hace

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Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

más de 8 años hace

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Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

más de 8 años hace

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Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

más de 8 años hace

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Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

más de 8 años hace

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Add two numbers
Given a and b, return the sum a+b in c.

más de 8 años hace

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Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

más de 8 años hace

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Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

más de 8 años hace

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Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

más de 8 años hace

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Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

más de 8 años hace

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Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

alrededor de 9 años hace

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Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

alrededor de 9 años hace