Resuelto
QWERTY coordinates
Given a lowercase letter or a digit as input, return the row where that letter appears on a <http://en.wikipedia.org/wiki/Keyboa...
más de 13 años hace
Respondida
Solving constrained non linear system using fmincon doesn't work
Hi Pi Pi, Two things. Firstly, your specific error: User supplied objective function must return a scalar value. com...
Solving constrained non linear system using fmincon doesn't work
Hi Pi Pi, Two things. Firstly, your specific error: User supplied objective function must return a scalar value. com...
más de 13 años hace | 1
Respondida
Adding values in a for loop
Hi Andy, I'm not entirely clear what you mean by "output", but I'll presume that you mean the value assigned to the *g* varia...
Adding values in a for loop
Hi Andy, I'm not entirely clear what you mean by "output", but I'll presume that you mean the value assigned to the *g* varia...
más de 13 años hace | 2
Respondida
interpolating the 2d line to make the new coordinates equi-distant
Hi Payam, try this: pathXY = [0 0; 1 1; 10 2; 12 3] stepLengths = sqrt(sum(diff(pathXY,[],1).^2,2)) stepLengths = [0;...
interpolating the 2d line to make the new coordinates equi-distant
Hi Payam, try this: pathXY = [0 0; 1 1; 10 2; 12 3] stepLengths = sqrt(sum(diff(pathXY,[],1).^2,2)) stepLengths = [0;...
más de 13 años hace | 2
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Enviada
Blended 3D poly2mask
Creates a 3D mask "lofted" or "tweened" (blended smoothly) from a set of planar polygons.
más de 13 años hace | 1 descarga |
Respondida
How can I vectorize/LUT this for loop ?
Hi Louis, This one's got a nice solution using *sub2ind* that lets you do the whole thing at once without a loop: img = ...
How can I vectorize/LUT this for loop ?
Hi Louis, This one's got a nice solution using *sub2ind* that lets you do the whole thing at once without a loop: img = ...
más de 13 años hace | 0
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Respondida
How do I store a series of 5*5 arrays into a multidimensional array?
Bob, here's a fix to your loop: Agray=imread('rice.png'); [ar,ac]=size(Agray); v1=5; v2=5; r=ar-v1+1; c=ac-v...
How do I store a series of 5*5 arrays into a multidimensional array?
Bob, here's a fix to your loop: Agray=imread('rice.png'); [ar,ac]=size(Agray); v1=5; v2=5; r=ar-v1+1; c=ac-v...
más de 13 años hace | 1
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Respondida
How to determine if two cones with vertices at origin, intersect?
Hi again Doc, First thing you can do is check the dot product between the normal vectors of both cones' planes. If the dot pr...
How to determine if two cones with vertices at origin, intersect?
Hi again Doc, First thing you can do is check the dot product between the normal vectors of both cones' planes. If the dot pr...
más de 13 años hace | 0
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Respondida
Zero-filling matricies but different dimensions
Hi Bran, I think this is what you're trying to do: A = [1 2 3; 4 5 6; 6 7 8; 11 12 13] B = [1 2 3; 4 5 6; 11 12 13] ...
Zero-filling matricies but different dimensions
Hi Bran, I think this is what you're trying to do: A = [1 2 3; 4 5 6; 6 7 8; 11 12 13] B = [1 2 3; 4 5 6; 11 12 13] ...
más de 13 años hace | 0
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Respondida
Finding a circle enclosing data points in a tilted plane
Hi Doctor61, First, from your previous posts and this one I see that you're doing lots of stuff with 3d geometry. I think tha...
Finding a circle enclosing data points in a tilted plane
Hi Doctor61, First, from your previous posts and this one I see that you're doing lots of stuff with 3d geometry. I think tha...
más de 13 años hace | 1
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Respondida
Interpolating matrices of different sizes to the same size
Hi Eliott, Do you have the image processing toolbox? If so, this will be quite easy: targetSize = [60 128]; Model_2_r...
Interpolating matrices of different sizes to the same size
Hi Eliott, Do you have the image processing toolbox? If so, this will be quite easy: targetSize = [60 128]; Model_2_r...
más de 13 años hace | 2
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Pregunta
Can I make a spline both smoothing *and* periodic?
Hi all, I would like to make a smoothing spline through data, and enforce point and gradient equality at either end of my spl...
más de 13 años hace | 1 respuesta | 0
1
respuestaRespondida
imfindcircles doesn't work
imfindcircles is part of the image processing toolbox, I think it came into that toolbox in MATLAB version 2012a. Do you have...
imfindcircles doesn't work
imfindcircles is part of the image processing toolbox, I think it came into that toolbox in MATLAB version 2012a. Do you have...
más de 13 años hace | 0
Respondida
How to determine if enter(return) was pressed ?
Hi Peter, I've found that it's often easier to supply an onKeyPress function like follows: function testme() figure('...
How to determine if enter(return) was pressed ?
Hi Peter, I've found that it's often easier to supply an onKeyPress function like follows: function testme() figure('...
más de 13 años hace | 0
Respondida
fprintf %E Leading zero
Interesting question Peter... Here's a solution I found, which pretty much involves brute force shifting of characters around...
fprintf %E Leading zero
Interesting question Peter... Here's a solution I found, which pretty much involves brute force shifting of characters around...
más de 13 años hace | 0
Resuelto
Make a Palindrome Number
Some numbers like 323 are palindromes. Other numbers like 124 are not. But look what happens when we add that number to a revers...
más de 13 años hace
Respondida
best way in terms of performance to read a text file
If your text file has exactly what you've got there (numbers separated by spaces): ---== contents of test.txt ==--- 1 2 ...
best way in terms of performance to read a text file
If your text file has exactly what you've got there (numbers separated by spaces): ---== contents of test.txt ==--- 1 2 ...
más de 13 años hace | 1
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Respondida
Set colorbar ranges in 3d graphs
Hi Eleftheria, You can use *caxis()* to set the colour limits (which is part of your problem... we'll get to the next bit). ...
Set colorbar ranges in 3d graphs
Hi Eleftheria, You can use *caxis()* to set the colour limits (which is part of your problem... we'll get to the next bit). ...
más de 13 años hace | 0
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Resuelto
Clean the List of Names
Given a list of names in a cell array, remove any duplications that result from different capitalizations of the same string. So...
más de 13 años hace
Respondida
How to produce isosurfaces
Hi Mikael, you're almost there. Isosurface cuts the data _above_ the isovalue you provide. You need to change your value to, say...
How to produce isosurfaces
Hi Mikael, you're almost there. Isosurface cuts the data _above_ the isovalue you provide. You need to change your value to, say...
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Respondida
How can I make matlab stop recognizing string as char?
I think the issue here is just a typo: "strcomp" is not a MATLAB function. I think you mean "strcmp". wavetype = 'sawtoo...
How can I make matlab stop recognizing string as char?
I think the issue here is just a typo: "strcomp" is not a MATLAB function. I think you mean "strcmp". wavetype = 'sawtoo...
más de 13 años hace | 1
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Respondida
Make code faster for import and array creation
Hi Jenna, I bet this is a pre-allocation issue. When you build a big matrix one column at a time (such as is being done for *...
Make code faster for import and array creation
Hi Jenna, I bet this is a pre-allocation issue. When you build a big matrix one column at a time (such as is being done for *...
más de 13 años hace | 0
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Respondida
how create a new matrix with values found in an another matrix
Hi Gianluca, Have you tried using the second output from find_ndim? [I, Imap] = find_ndim(A,3,'first'); B = A(Imap); ...
how create a new matrix with values found in an another matrix
Hi Gianluca, Have you tried using the second output from find_ndim? [I, Imap] = find_ndim(A,3,'first'); B = A(Imap); ...
más de 13 años hace | 1
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Respondida
change the orientation of the xtick labels
There's no way to _directly_ change the orientation of the xtick labels (using plain old MATLAB). You can try a work-around: ...
change the orientation of the xtick labels
There's no way to _directly_ change the orientation of the xtick labels (using plain old MATLAB). You can try a work-around: ...
más de 13 años hace | 0
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Respondida
find index on 3d matrix
Hi Gianluca, The MATLAB docs say "TriScatteredInterp is the recommended alternative to griddata as it is generally more effic...
find index on 3d matrix
Hi Gianluca, The MATLAB docs say "TriScatteredInterp is the recommended alternative to griddata as it is generally more effic...
casi 14 años hace | 2
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Respondida
How to replace multiple strings in a txt file
Hi Steven, Try this, it's basically 3 steps: # Read the file into a cell of strings (1 per line in the original file) # R...
How to replace multiple strings in a txt file
Hi Steven, Try this, it's basically 3 steps: # Read the file into a cell of strings (1 per line in the original file) # R...
casi 14 años hace | 0
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what is another logic that has execution time faster than randi?
I agree with Matt - I bet there are faster ways to run your loop, and we can probably help out if you can describe what the loop...
what is another logic that has execution time faster than randi?
I agree with Matt - I bet there are faster ways to run your loop, and we can probably help out if you can describe what the loop...
casi 14 años hace | 0
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Respondida
Load Column Data in Popup Menu Guide
Hi Amanda, fid = fopen('A.txt'); datas = textscan(fid,'%f %f','headerlines',1); fclose(fid); figure winterHan...
Load Column Data in Popup Menu Guide
Hi Amanda, fid = fopen('A.txt'); datas = textscan(fid,'%f %f','headerlines',1); fclose(fid); figure winterHan...
casi 14 años hace | 0
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Resuelto
Alphabetize by last name
Given a list of names in a cell array, sort the list by the last name. So if list = {'Barney Google','Snuffy Smith','Dagwood ...
casi 14 años hace
Resuelto
Find relatively common elements in matrix rows
You want to find all elements that exist in greater than 50% of the rows in the matrix. For example, given A = 1 2 3 5 ...
casi 14 años hace