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# Albert

##### Last seen: 1 day ago
11 total contributions since 2019

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Question

Find a 4-point polygon enclosing scattered points
I have a set of scattered points (x,y) as in the attached figure and I want to find the polygon defined only by 4 points that en...

11 days ago | 1 answer | 0

### 1

Question

Multiple griddata calls into a single one (same grid)
Hi, I'm using griddata to regrid points (xpoint, ypoint, pointval) into a regular grid (xgrid, ygrid). I used to do this in 2D ...

2 months ago | 3 answers | 0

### 3

Question

How to find optimum complex weighting coefficients for antenna beam pattern optimisation? A purely optimisation problem
Hi, I need to optimize antenna pattern weights so that it has a certain value at certain directions. I've seen there is an examp...

3 months ago | 1 answer | 0

### 1

Question

Breaking and spliting vector into groups and averaging
Hi, I have a long one-dimensional time vector that I want to split in chunks and average each chunk. I have another logical vec...

3 months ago | 1 answer | 0

### 1

Question

Antenna Pattern Symmetric Null Steering / Beamforming
Hi! I have an antenna made of N linear elements forming an array (N = 3). I want to compute the steering vector so that the max...

3 months ago | 0 answers | 0

### 0

Antenna Array Factor Null Steering
Have a look at this example: https://es.mathworks.com/help/phased/examples/array-pattern-synthesis.html You can choose one dir...

1 year ago | 0

Question

How to add more nulling directions to Phased array pattern synthesis?
Hi, I'm trying to tune the Matlab example on steering vectors computation for array synthesis nulling on a given direction. The...

1 year ago | 0 answers | 0

### 0

Question

Array points densification without classical interpolation (non-unique solutions)
Hi! I would like to 'densify' the points within an array of x and y points. For instance I would like to turn: size([x y]) =...

1 year ago | 0 answers | 0

### 0

Multi-variable interpolation, grids and 2D guessing
Thanks very much for the detailed answer. Indeed I realize now that if the problem were linear the solution may be easier. I fir...

1 year ago | 0

Question

Multi-variable interpolation, grids and 2D guessing
Hi! I have a regular grid of (x,y) points. Each point in turn has an associated value of a range and frequency variable, that m...

1 year ago | 2 answers | 0