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# UWM

##### Last seen: 19 days ago
13 total contributions since 2016

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Question

vector projection based on adopted direction
I have X'Y'Z' coordinate system (define by position of X', Y', Z' axises). This coordinate system was created by rotatation and...

2 months ago | 0 answers | 0

### 0

Question

coordinate system rotation and then calculate position in new (rotated) system
I have a direction defined by azimuth and evation (e.g. Azi, Elev). I would like to calculate values of these Azi i Elev after...

3 months ago | 1 answer | 0

### 1

Question

Angle betwen two 3d vectors in the range 0-360 degree
I have set of two 3d vectors lying on the same plane. I would like to calculate angles betwen each of these pairs, but in the "...

4 months ago | 1 answer | 0

### 1

Question

calculation the angle betwen X-axis created due coordinate system rotation - after projection the coordinate system on the plane
I have a coordinate system XYZ (black on figure) which can be rotated around Z axis (Zrot angle) or around Y axis (Yrot angle...

5 months ago | 1 answer | 0

### 1

Question

how to calculate direction in rotated coordinate system
I have a direction defined by azimuth and evation (e.g. Azi, Elev). I would like to calculate values of these Azi i Elev after...

5 months ago | 2 answers | 0

### 2

Question

vector projection on rotated coordinate system
I have to vectors: red (XR, YR, ZR) and blue (XB, YB, ZB) in XYZ coordinate system. I would like to calculate projection of the...

5 months ago | 1 answer | 0

### 1

Question

delete row if in column 1 nad 2 are the same values
Hello. I have e.g. 3 x 5 matrix. I want to delete all rows which have the same elements in column 1 and 2. For instance: a = ...

8 months ago | 1 answer | 0

### 1

Question

fit and plot surface and get acces to fitted surface parameters
I use f = fit( [X1, Y1], Z1, 'poly44' ) and plot(f, [X1,Y1], Z1) functions to fit (and plot) surface to scattered data. I...

9 months ago | 0 answers | 0

### 0

Question

Compare values from two text files and replace if they match
I have a problem of comparing two text files and replace value in third column if values in two first column match. I have to t...

11 months ago | 1 answer | 0

### 1

Question

runing repeatedly exe files using matlab
I have houndreds of text fils that I have to edit using teqc.exe soft. Example files names are: TTTT071A.19, TTTT072A.19, TTTT0...

1 year ago | 0 answers | 0

### 0

Question

Is it posible in Matlab to model surface using spherical harmonics (SH) basing on 3d data? If yes, how can I do it.
imputs: a set of points with 3d coordinates outputs: surface model created using SH

2 years ago | 1 answer | 0

### 1

Question

Finding the first occurance of a given string
I have a large text file in which I need to find the first occurance of a given string, e.g. 'STAX'. How can I do this?

3 years ago | 1 answer | 0