Answered

What features and improvements do you hope to see in HG2?

Set a colormap per axes instead of per figure. This would make it much simpler to use multiple colormaps in the same figure.

What features and improvements do you hope to see in HG2?

Set a colormap per axes instead of per figure. This would make it much simpler to use multiple colormaps in the same figure.

5 years ago | 2

Question

What features and improvements do you hope to see in HG2?

For a long time now, MATLABers have been calling for an improved graphics pipeline. MathWorks have made it clear in the past few...

5 years ago | 18 answers | 0

Question

Equivalent of inputname() for output variables

Say I have a function: function B = myfun(A) disp(inputname(1)) disp(outputname(1)) B = A; If I call it from th...

5 years ago | 1 answer | 3

Submitted

real2rgb & colormaps

Converts intensity matrices into truecolor images.

5 years ago | 9 downloads |

Submitted

append_pdfs

Append/concatenate multiple PDF files into a single file using Ghostscript.

5 years ago | 40 downloads |

Answered

Is it possible to set watchdogs (memory, exec time) in MATLAB?

I use timers to check certain things, then exit MATLAB if things go wrong. E.g. the following timer function: function kill...

Is it possible to set watchdogs (memory, exec time) in MATLAB?

I use timers to check certain things, then exit MATLAB if things go wrong. E.g. the following timer function: function kill...

5 years ago | 0

Answered

Determine if using HG2

I've ended up using the undocumented function, graphicsversion(): function tf = ishg2(fig) try tf = ~graphicsvers...

Determine if using HG2

I've ended up using the undocumented function, graphicsversion(): function tf = ishg2(fig) try tf = ~graphicsvers...

5 years ago | 0

| accepted

Answered

Determine if using HG2

Currently I'm using the version checking approach: function tf = ishg2() try tf = ~verLessThan('matlab', '8.4'); ...

Determine if using HG2

Currently I'm using the version checking approach: function tf = ishg2() try tf = ~verLessThan('matlab', '8.4'); ...

5 years ago | 2

Question

Determine if using HG2

How can I determine if MATLAB or the current figure is using the new graphics pipeline, HG2? I need a function tf = ishg2(...

5 years ago | 6 answers | 4

Answered

Forward CUDA printf output to the MATLAB console

There might be a way to redirect output from stdout in a mex file ( <http://www.mathworks.co.uk/matlabcentral/answers/132527-in-...

Forward CUDA printf output to the MATLAB console

There might be a way to redirect output from stdout in a mex file ( <http://www.mathworks.co.uk/matlabcentral/answers/132527-in-...

5 years ago | 0

| accepted

Question

In mex files, where does output to stdout and stderr go?

If I link an external library to a mex file, and this library sends text output to stdout or stderr, what does MATLAB do with th...

5 years ago | 3 answers | 2

Question

Forward CUDA printf output to the MATLAB console

I am wrapping CUDA code in a mex file. I have printfs in my CUDA kernel, and I want to see the output from those printfs, ideall...

5 years ago | 1 answer | 0

Question

Linking mex files to boost libraries

Boost libraries have awkward names. They depend on all sorts of things: compiler version, library type, boost version, etc. E.g....

5 years ago | 0 answers | 0

Answered

how to get RGB color?

You can use the <http://www.mathworks.com/matlabcentral/fileexchange/16233 sc> toolbox, from the File Exchange. In your case, tr...

how to get RGB color?

You can use the <http://www.mathworks.com/matlabcentral/fileexchange/16233 sc> toolbox, from the File Exchange. In your case, tr...

5 years ago | 0

Solved

Sort a list of complex numbers based on far they are from the origin.

Given a list of complex numbers z, return a list zSorted such that the numbers that are farthest from the origin (0+0i) appear f...

6 years ago

Solved

Most nonzero elements in row

Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...

6 years ago

Answered

Jacobian of scalar matrix

gradient() computes partial derivatives approximately, using finite differences. It can't compute the exact partial derivatives ...

Jacobian of scalar matrix

gradient() computes partial derivatives approximately, using finite differences. It can't compute the exact partial derivatives ...

6 years ago | 0

Answered

Possible to apply filter2 to only values above a limit?

Compute the filtered version for all pixels, and simply replace the pixels above a certain value with their filtered value: ...

Possible to apply filter2 to only values above a limit?

Compute the filtered version for all pixels, and simply replace the pixels above a certain value with their filtered value: ...

6 years ago | 0

| accepted

Answered

Can classes be made unsaveable

No. When a class object is saved, the saveobj method for that class gets called, if it exists. If this method throws an error, i...

Can classes be made unsaveable

No. When a class object is saved, the saveobj method for that class gets called, if it exists. If this method throws an error, i...

6 years ago | 0

| accepted

Question

Can classes be made unsaveable

Is there a way to define a class such that the MATLAB save() function throws an error when it tries to save an instance of that ...

6 years ago | 1 answer | 1

Answered

Optimization problem - reducing the time needed to solve

ConstLM.m looks very inefficient to me. I think those loops can be vectorized. Profile your code, and learn about vectorization....

Optimization problem - reducing the time needed to solve

ConstLM.m looks very inefficient to me. I think those loops can be vectorized. Profile your code, and learn about vectorization....

6 years ago | 0

Answered

Interpolation between matrices (image attached)

Your query location, (0,10), is in the center of your grid, so if you want a linear interpolation between the input matrices you...

Interpolation between matrices (image attached)

Your query location, (0,10), is in the center of your grid, so if you want a linear interpolation between the input matrices you...

6 years ago | 0

| accepted

Solved

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.

6 years ago

Solved

Free passes for everyone!

_Simply return the name of the coolest numerical computation software ever_ *Extra reward* (get a _freepass_): As an addit...

6 years ago

Solved

Function Iterator

Given a handle fh to a function which takes a scalar input and returns a scalar output and an integer n >= 1, return a handle f...

6 years ago

Solved

Remove any row in which a NaN appears

Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

6 years ago

Solved

Finding Perfect Squares

Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

6 years ago

Solved

Who Has the Most Change?

You have a matrix for which each row is a person and the columns represent the number of quarters, nickels, dimes, and pennies t...

6 years ago