James McDaniel

Boston University

Last seen: environ un mois il y a | Actif depuis 2013

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saving graphic as pdf file not working "out of the box"
The following code has produced a good output file since pdf was invented. I never had a problem. But the latest version has pro...

environ un mois il y a | 1 réponse | 0

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finding partial solutions from ill-conditioned equations
I am hoping you can point me in the right direction. I have a linear system Ax = b. A is illconditioned. I believe, however tha...

8 mois il y a | 2 réponses | 0

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finding index to a vector in structure
Consider the following example: f = struct f(1).x = 5; f(2).x = 1:10; f(3).x = 1; f(4).x = 2; I wish to ...

environ 10 ans il y a | 1 réponse | 0

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color leaves out data
The command pcolor(1:4, 1:4, randn(4,4)) produces a tiled plot with 9 colors even though randn(4,4) is a colle...

plus de 10 ans il y a | 1 réponse | 0

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iterative solvers and speed comparisons
We are using an iterative solver with various starting guesses and trying to assess whether this is faster than using a direct s...

plus de 12 ans il y a | 1 réponse | 0

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A résolu

Matrix indexing with two vectors of indices
Given a matrix M and two index vectors a and b, return a row vector x where x(i) = M(a(i),b(i)).

plus de 12 ans il y a