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genevois pierre


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Last seen: 1 year 前 |  自 2012 起处于活动状态

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computing a sequence of vectors
the sequence is defined, for i = 1:n, by this vectorial recurrence relation : [A(i+1); B(i+1)] = Q * [A(i); B(i)] + [C; D] wit...

4 years 前 | 1 个回答 | 0

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how to stop executing a function if its duration is too long ?
Hi, the solve function (applied to a hard problem) still executes after a 30 minutes run ... Can it be stopped by the calling pr...

4 years 前 | 1 个回答 | 0

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已回答
using symbolic calculus on char strings (coming from a file)
Thank you for your answer ; a warning when using str2sym could mean that this function will be removed in a future version ? How...

6 years 前 | 0

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提问


using symbolic calculus on char strings (coming from a file)
Hello, I'm currently using str2sym on char strings obtained from fgetl on a text file containing many lines of mathematical expr...

6 years 前 | 1 个回答 | 0

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behavior of for loop with strings of chars ?
Hi, this for statement for string = ['=A=', '=B=', '=C='] [starts, ends] = regexp(line, string); the ...

6 years 前 | 1 个回答 | 0

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how to replace 'x\d+' by 'X(...same number as \d+ ...)' such as x45 --> X(45) using regexprep ?
Hello, I'm searching for replacing, in a text file, strings having 'x' as only non numeric character at the beginning, followed...

6 years 前 | 1 个回答 | 0

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提问


accessing to some ga's parameters
Hi, I cannot access to some values of parameters of ga as (names = values hereafter) : options_ga.FitnessScalingFcn = @fitsc...

6 years 前 | 0 个回答 | 0

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how to count the number of function calls without modifying it by inserting a counter ?
Hi, for example in ga(...), the count of objective function calls is provided, but not that of the constraint function. My unsat...

6 years 前 | 2 个回答 | 0

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提问


a test to exclude inf and nans from pinv(...) doesn't work
Hello, having this error : Error using svd Input to SVD must not contain NaN or Inf. Error in pinv (li...

6 years 前 | 1 个回答 | 0

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已回答
constrained pso : how to set initial population ?
I get the same problem ... probably due to the call to fmincon in psocheckinitialpopulation, line 99.

8 years 前 | 0

提问


constrained pso : how to set initial population ?
hi, i tried options = optimoptions('particleswarm', 'InitialPopulation', tous_xi); where tous_xi contains initial position...

8 years 前 | 3 个回答 | 0

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options_pso.InitialPopulation : how to assign ?
hi, i now get an error when setting options.InitialPopulation = [1,2,3] for example, after having run options=pso . Can you help...

8 years 前 | 1 个回答 | 0

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提问


constrained pso : Not enough input arguments.
hi, in my code, I use [x, fval, exitflag] = pso(mapse_vu_sd, 7, [], [], [], [], ... lx, ux, mapse_CNL_sd_c) and I g...

8 years 前 | 1 个回答 | 0

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已解决


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 ...

8 years 前

已解决


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...

8 years 前

已解决


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:...

8 years 前

已回答
What exactly does TolCon do and how is relative max(constraint violation) calculated?
hi, the link in "Tolerances are described here" is not set : could you arrange this ? Thank you.

12 years 前 | 0

提问


index of control loop that is a vector component
hi all, in order to make my code more compact, i tried this : for x(1) = lb(1) : d_x(1) : ub(1) for x(2) = lb(2) :...

12 years 前 | 1 个回答 | 0

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How can I extract column vectors from matrix (with large number of columns) ?
Having a lot of columns, this way of extracting from a big matrix named C : temperature = C(:,1); index = C(:,2); ... ...

12 years 前 | 2 个回答 | 1

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