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Markus


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Answered
How to call up matrices in a loop
you need the command 'eval' this is one universal solution, you just have to make sure than only the martices which you wanna c...

ungefär 11 år ago | 0

Question


how to implement a function in kd-tree ?
hei, i need to compare 100000 points (xy) whether they are within a certain distance (radius) of each other. i am using ...

ungefär 11 år ago | 0 answers | 0

0

answers

Question


how to improve loops in matlab, especially with big variables.
hei, i have two loops, where each point is checked how many other points are within a certain radius. the point is, that i h...

ungefär 11 år ago | 2 answers | 0

2

answers

Answered
How to sort an array in descending order?
sort(A,1,'descend') <http://www.mathworks.se/help/matlab/ref/sort.html> or sortrows

ungefär 11 år ago | 3

Question


point cloud to surface/mesh , interpolation within a certain distance.
hei, i have an irregular point cloud and want to creat a DEM. i tried this with griddata. however, griddata interpolates als...

ungefär 11 år ago | 0 answers | 0

0

answers

Answered
Repeat a function n times where n is the number of peaks
i am not sure, if i understand the discription. but, if you n is the numer of peaks, than it should be possible to count the p...

ungefär 11 år ago | 1

| accepted

Answered
How to plot a Matrix?
use the meshgrid, griddata, surf: [xi yi]= meshgrid(min(G):0.05:max(G),min(G):0.05:max(G); zi = griddata(x,y,z, xi,y...

ungefär 11 år ago | 0

Question


griddata interpolation just within a certain distance
hei, i have a point cloud from a laser scanner with about 6000000 points. i did an interpolation with [xi yi]= meshgrid(s...

ungefär 11 år ago | 3 answers | 1

3

answers

Answered
different z values for one x y coordinate
%% looking for unique xy values uniCoord=unique(data(:,1:2),'rows'); uniCoord(:,3:12)=NaN; %% writing...

mer än 12 år ago | 0

| accepted

Answered
matrix limits
hei, this might work: A(A(:,1)>limit,:) = [] hope this helps

mer än 12 år ago | 0

| accepted

Question


different z values for one x y coordinate
hei, my problem is, that i have xyz points and it happens, that for one identical x,y value i get several z values. now i...

mer än 12 år ago | 2 answers | 1

2

answers

Question


interpolating in 3 dimension for each cell position
hei, i have a 3d matrix, where each layer into the 3rd dimension is a new measurement. i would like to interpolate invalid va...

ungefär 13 år ago | 1 answer | 0

1

answer

Question


sorting 3d matrix by value of a cell
hei, i have a 3d matrix, where each layer into the 3rd dimension is a new measurement. the value in one cell however gives ...

ungefär 13 år ago | 2 answers | 0

2

answers