Question

assigning an empty numeric value to a cell array
Hi, I need to be able to assign an empty numeric value to a cell array, as in Cell = {}; Cell = [ Cell , [] ]; But th...

ungefär 10 år ago | 1 answer | 0

1

answer

Question

Getting output from parallel jobs that would regularly go to a diary
Using the parallel computing toolbox, is it possible to get each individual job spawned by createTask to write output to a diary...

ungefär 10 år ago | 1 answer | 1

1

answer

Question

Is there a one-step command that identifies the name of the caller workspace
Obviously, I could use dbstack, but it seems there should be a simple command that simply prints out the name of the caller work...

ungefär 10 år ago | 1 answer | 1

1

answer

Question

Maximizing the number of workers used in a parfor loop using the "batch" command
I have four cores, and would like to use all four of them in parallel. To accomplish this, I have attempted to use the "batch"...

mer än 10 år ago | 1 answer | 0

1

answer

Question

force fsolve termination if not progressing
Hi. I'm running repeated fsolves. With bad starting points, the engine goes nowhere. I can see this looking at th...

mer än 10 år ago | 1 answer | 0

1

answer

Question

evalin in caller a command that assigns in caller
Matlab documents that nested evalin's don't work. They don't appear to document that an assignins within evalins don't work. I...

mer än 10 år ago | 3 answers | 0

3

answers

Answered
construct anonymous function that returns the argmax of two symbolic variables
Wow, so simple, thanks very much indeed! For my purposes argmax = @(x)(find(x==max(x))) is perfect, since I only care a...

mer än 10 år ago | 0

Question

construct anonymous function that returns the argmax of two symbolic variables
Hi, I'd like to construct an anonymous function that returns the argmax of two symbolic variables, e.g., syms x y symMax...

mer än 10 år ago | 2 answers | 0

2

answers

Question

Access a single element of an anonymous function that returns an array
I have an anonymous function that returns an array. I'd like to be able to create a new anonymous function that consists of a...

mer än 10 år ago | 2 answers | 1

2

answers

Question

Execute a command on exit from a workspace
Hi I'd like to be able to execute a command immediately after I leave a function. In particular, I've written a function c...

mer än 10 år ago | 1 answer | 0

1

answer

Question

Most constrasting colormap for multi-line plots
Hi everyone I'm having a very frustrating time trying to get constrating colormaps for multiline plots. For people with po...

nästan 11 år ago | 2 answers | 1

2

answers

Question

Initializing a struct with n-d fields.
Hi, I have a struct with an indeterminate number of fields. For (very good) reasons I don't want to go into, I want to initia...

ungefär 11 år ago | 3 answers | 0

3

answers

Question

Accessing within a matlab function a string that duplicates the command that called the function.
Apologies for the horrible question title. It's easiest if I give an example of what I'm trying to ask. Suppose I have a ...

mer än 11 år ago | 1 answer | 0

1

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Question

How can I tell matlab it's running in the background?
I'd like to be able to run a job either in the background or in the foreground. My program runs fine in the foreground but cras...

mer än 11 år ago | 1 answer | 0

1

answer

Question

Passing array arguments to an anonymous function
I have an anonymous function, for example f = @(x,y)x.^2.*y.^2 In general for my problem I don't know how many argument...

mer än 11 år ago | 1 answer | 0

1

answer

Question

RESTOREDEFAULTPATH doesn't restore default path (rather restores user's path)
The first sentence on the help screen for restoredefaultpath is %RESTOREDEFAULTPATH Restores the MATLAB search path to inst...

nästan 12 år ago | 2 answers | 1

2

answers

Answered
dbstop inside an anonymous function
Thanks, that's good to know. But I'm a dinosaur who hates GUIs so do everything from the command line. I use the -nodesktop ...

nästan 12 år ago | 0

Question

dbstop inside an anonymous function
Is there a way to set the debugger to stop inside an anonymous function? The following obviously won't work dbstop in my...

nästan 12 år ago | 2 answers | 1

2

answers

Question

Getting back to my workspace in the debugger after a symbolic error
When you make an error using the symbolic toolbox, and dbstop if error is set, you may end up six workspaces down from where you...

nästan 12 år ago | 0 answers | 1

0

answers

Answered
Bug in matlab's builtin sort routine
I guess I've found my own workaround, which is incredibly unsatisfactory, but does seem to work. Convert the symbolic array t...

nästan 12 år ago | 0

Question

Bug in matlab's builtin sort routine
Matlab's 2012b has introduced all sorts of bugs in its sort routine. Consider the following syms d1_X1_f1 d1_X1_f2 d1_X...

nästan 12 år ago | 2 answers | 0

2

answers

Question

Set a default property for symbolic variables
I would like to set all of my symbolic variables to be real by default, ideally in my startup script. Is there a way to do th...

nästan 12 år ago | 1 answer | 0

1

answer

Question

manipulating symbolic ND arrays
I've been surprised and disappointed to discover just how primitive matlab's handling is of ND symbolic arrays. Surely it sh...

nästan 12 år ago | 1 answer | 0

1

answer

Question

converting an array of n symbolic variables to a cell array with n elements
Hi Could somebody tell me a way to convert the symbolic array [ x, y , z ] to the 3 element cell array Cell, where Cell{1} =...

nästan 12 år ago | 2 answers | 0

2

answers

Question

Can't get "collect" to extract the determinant of the inverse of a symbolic matrix.
I often invert complex symbolic matrices and end up with an impossibly complex result because matlab divides each term in the in...

ungefär 12 år ago | 1 answer | 0

1

answer

Question

Dealing with v(end+1) when v(1) may not have been defined
I use the following kind of construction a lot v(1) = (x+y)^2; v(end+1) = (x^2 + 2*x*y + y^2) etc. Sometimes v wou...

ungefär 12 år ago | 1 answer | 0

1

answer

Question

Recursive symbolic differentiation with anonymous functions
This is closely related to an earlier post of mine, but i thought I should make it a separate thread, since it's not really the ...

mer än 12 år ago | 1 answer | 0

1

answer

Answered
Using latex command with anonymous functions
Well, I've tried defining B as a symbolic variable first, but that doesn't help, e.g. clear all ; syms x B ; f= @(input)B(i...

mer än 12 år ago | 0

Answered
Using latex command with anonymous functions
Thanks to Matt and Walter for responses. Walter's answer didn't work; according to the documentation, latex requires a symbol...

mer än 12 år ago | 0

Question

Using latex command with anonymous functions
I want to convert a bunch of simple symbolic expressions to latex e.g., syms x; B = @(x)B(x) latex(diff(B,x)) pro...

mer än 12 år ago | 6 answers | 1

6

answers