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lvn


49 total contributions since 2013

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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...

3 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 ...

3 months ago | 0

| accepted

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...

1 year ago | 12

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

0

answers

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...

4 years ago | 1 answer | 0

1

answer

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 ...

4 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

answers

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 |...

5 years ago | 0

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

5 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 ...

5 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','...

5 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...

5 years ago | 1

| accepted

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!

5 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

5 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> ...

5 years ago | 0

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

5 years ago | 0

| accepted

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...

5 years ago | 0

| accepted

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...

5 years ago | 0

| accepted

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

5 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...

5 years ago | 0

| accepted

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...

5 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...

5 years ago | 0

| accepted

Answered
Several vectors as inputs to function
It all depends whether your function BSCall supports vector input. If it does, then just Values=BSCall(S,K,T,v,r) with ...

6 years ago | 0

Answered
How can I substitute values in a matrix if they equal a certain value?
I hope this is what you mean: newmatrix=X1; newmatrix(X1==255)=X2(X1==255);

6 years ago | 0

Answered
How to sort rows of a 2D array, such that all elements along a diagonal are non-zero?
For reference, here is a solution using the backtracking. The main algorithm part is around 20 lines. This is the initial s...

6 years ago | 1

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