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# lvn

##### Last seen: 1 day ago
52 total contributions since 2013

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Solved

Positive Infinity
Round the array a towards positive infinity

1 day ago

Solved

Length of a short side
Calculate the length of the short side, a, of a right-angled triangle with hypotenuse of length c, and other short side of lengt...

1 day ago

Answered
How can I recursively process files in subdirectories using MATLAB?
It is high time Matlab updates some of the official answers, as many are outdated. This is an example, as of R2016b, no need fo...

3 months ago | 0

Answered
Reducing Density in Geographical Data
You first have to get the indices of which elements are preserved. With those you can construct new elevation, and length vector...

8 months ago | 0

Answered
How can I change the colormap for each tab in a tabbed figure?
The code you gave didn't run on my PC because of a problem with viewshed. The following code runs and does not show the problem ...

8 months ago | 0

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Answered
How to change the line width for fplot?
Starting in R2016a, you can specify the 'LineWidth' property the same way you do for plot. For example: >> fplot(x1,[0,2],'k','...

1 year ago | 10

| accepted

Answered
How do I create a logarithmic scale colormap or colorbar?
Strange official answer, since it is clearly possible in Matlab: set(gca,'ColorScale','log') <https://nl.mathworks.com/h...

2 years ago | 19

Solved

Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

2 years ago

Question

Fat and ugly lines in eps export
I have a high resolution map of the world. When I try to export it as an eps with print('-depsc','-painters', '-loose','tes...

4 years ago | 0 answers | 0

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Answered
Ho to plot a pressure map?
Looks to me like you are looking for an interpolation function to move to a finer grid. See here for the 2D version: <http://mat...

4 years ago | 0

Question

How to generate surface preserving probability density function from histogram
I have a histogram with non uniform bins. From this I would like to estimate a smooth probability density function(basically a...

5 years ago | 1 answer | 0

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Question

VPA behavior, workaround requested
Does anybody now a workaround for this behaviour of vpa?: syms a b c c=a+b; a=1; b=1; vpa(c) ans = a + b ...

5 years ago | 1 answer | 0

### 1

answer

Answered
Any recommendation how to vectorize this double for loop?
A couple of things: 1. If size(MM(looper,:),1) is independent of looper (as you suggest?), you can simply precalculate it bef...

5 years ago | 0

Question

Symbolic array pre-allocation
Symbolic array pre-allocation only allocates pointers as I understood it from reading the forum. This is causing a major slowdow...

5 years ago | 1 answer | 0

### 1

answer

Question

Most populated range of floating point numbers in array
histc can be used on a floating point array to find the bin with the largest number of elements. However these bins are fixed, a...

5 years ago | 2 answers | 0

### 2

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Answered
Elegant way to know in which iteration of for I am
This should do it: if (protocol_ID==1 || protocol_ID==4) && n_runs > N_categories( 1 ) .. elseif (protocol_ID==6 |...

6 years ago | 0

Answered
how to assign the pixel to clusters based on euclidean distance ??
<http://www.mathworks.nl/help/stats/kmeans.html>

6 years ago | 0

Answered
How to solve 3 equations with 3 unknowns using 'for' loop?
I guess you are meant to solve these equations by iteration? Something like this would do x=1;y=1;z=1; for l=1:30 ...

6 years ago | 0

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Answered
Plot at the same figure
The problem are these lines: figure1 = figure('Color',[0 1 1]); axes1 = axes('Parent',figure1,'FontSize',12,'FontName','...

6 years ago | 0

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Answered
Problem to add greek chars as ticklabel
It does not seem supported, but there is a work around: <http://www.mathworks.com/matlabcentral/answers/102053-how-can-i-make...

6 years ago | 1

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Answered
Extra term in "min" function in while loop
I guess it is a remainder of some old code. It can be removed, it does nothing!

6 years ago | 1

Answered
How to extrapolate data from a matrix of x axis values and corresponding y axis values?
This is for a linear extrapolation: interp1(x,y,4,'linear','extrap') ans = 2.5000e+03

6 years ago | 0

Answered
How to plot a circle on top of my plotted image
See this answer <http://www.mathworks.com/matlabcentral/answers/98665-how-do-i-plot-a-circle-with-a-given-radius-and-center> ...

6 years ago | 0

Answered
3D matrix manipulation. FInd values of given positions
This should do it: sum(matrix2(matrix1~=0))

6 years ago | 0

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Answered
Input data from one array to another
The main problem with your code was the double for loop. Even if a match was found, for say j=50; it was overwritten in the seco...

6 years ago | 0

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Answered
what is the function of 'eval' ?
Eval can be used to run matlab commands which are not known in advance, but only at runtime. In your example eval executes the c...

6 years ago | 0

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Answered
getting name of all functions i use in m file (or script)
<http://www.mathworks.nl/help/matlab/matlab_prog/identify-dependencies.html>

6 years ago | 0

Answered
Matlab Cropping Plots to remove whitespace
On the fileexchange there are a lot of functions out there that can do this for you. I use for instance spaceplots <http://www.m...

6 years ago | 0

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Answered
how to make spatial plot using hdf5-1.8.8 data in matlab R2009b?
It looks like 'temp' is not the right variable to use here and is used for calibration purposes. From the manual <http://122.2...

6 years ago | 0

Answered
Creating a new variable in a loop automatically. Please help!
You can use the eval function to create such variables. However this practice is not recommended and can almost always be circum...

6 years ago | 0

| accepted

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