# Valeria Leto

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**Content Feed**

Question

is it possible to define only the sigma value in the edge command?

Hi! I would like to set only the sigma value for the canny and LoG operator. Is it possible? or I must set also the threshoold? ...

3 mesi ago | 3 answers | 0

### 3

answersQuestion

is the PSNR parameter good to assess the effect of a filter?

Hi! I have filtered an image with 4 different filters, mean, median, gaussian and a low-pass filter in the freq domain. They are...

3 mesi ago | 3 answers | 0

### 3

answersQuestion

how does griddata asses duplicates?

Hi! I would like to understand how griddata asses duplicate point. I opened the function and I found this section: %Need x,y ...

4 mesi ago | 1 answer | 0

### 1

answerQuestion

explanation on griddata methods

Hi! I am using griddata to interpolate data. There are many methods available such as linear, cubic, natural. They are all based...

4 mesi ago | 0 answers | 0

### 0

answersQuestion

Is it possible to convert a function containing a plot into c++ code?

Hi! Is it possible to convert this function into c++? I would like to open a window in c++ that shows data as if I were in MATLA...

5 mesi ago | 0 answers | 0

### 0

answersQuestion

How can I use importdata to import .csv files in a specific folder?

How can I use importdata to import .csv files that are in a specific folder? Thanks

6 mesi ago | 1 answer | 0

### 1

answerQuestion

How to save fig in a different folder

Hi! How can I make the folder where I want to save my figure vary? This line works but I would like to create a variable for th...

7 mesi ago | 1 answer | 0

### 1

answerQuestion

error using savefig and saveas

Hi guys! I get this error message but I don't understand why. I saw other people asked about it but I have no clue why it happen...

7 mesi ago | 1 answer | 0

### 1

answerQuestion

how to get the same contrast in an image?

Hi! I have image o.png which shows a difference in the contrast of the pixels, there is like a "line" that divide two different ...

7 mesi ago | 2 answers | 0

### 2

answersQuestion

surf command doesn't plot the value next to NaNs values

Hi! I don't understand why the surf command doesn't plot the value next to NaNs values in the matrix M_array. For example the se...

7 mesi ago | 2 answers | 0

### 2

answersQuestion

why does the surf command give me this result?

Hi! I got this image with surf(est,nord,down,I_frame,'EdgeColor','none') where (est,nord) are not regular points. I know for ...

8 mesi ago | 2 answers | 0

### 2

answerswarning message using surf

@KSSV I can't load the matrix because the files are too big even in a .zip format

8 mesi ago | 0

Question

I don't understand how to link the higher level controller of a WIP

Hi! I am trying to simulate a wheeled inverted pendulum with a partial feedback linearization law. I would like to control its v...

9 mesi ago | 0 answers | 0

### 0

answersQuestion

warning message using surf

Hi! I get this warning message but I don't know what to do.... Warning: Error updating Surface. Update failed for unknown reas...

9 mesi ago | 2 answers | 0

### 2

answersQuestion

don't get what solve should return as solution

Hi! I am new to symbolical equations in MATLAB. I have written the dynamics of a mobile inverted pendulum. The solution of the p...

10 mesi ago | 1 answer | 0

### 1

answerQuestion

how to extract the big content of a cell array?

Hi! I have a 2859x1 cell array. In each cell there is a content like this: 1617026479572040798,,0,,0,0,'',25.0,,,[],0,"[76, 7...

10 mesi ago | 0 answers | 1

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answersQuestion

how to create and save a georeferenced image in .tif format?

Hi! I have 3 arrays 318x2000: the first one contains the pixel values of a grayscale image I and the others the lat and lon va...

10 mesi ago | 0 answers | 0

### 0

answersQuestion

why do I get a strange result with griddata cubic?

Hi! I used the griddata cubic interpolation for the values of an image. I get this image that has a much higher range, from -300...

10 mesi ago | 1 answer | 0

### 1

answerQuestion

Error using griddata v4

I get this error using griddata v4. What's the problem? Error in griddata>gdatav4 (line 247) d = abs(xy - xy.');

10 mesi ago | 0 answers | 0

### 0

answersQuestion

differences between griddata interpolation methods

Hi! I don't find the official documentation about the differences between the griddata interpolation methods. I have found only ...

10 mesi ago | 0 answers | 0

### 0

answersQuestion

someting wrong using interp2

I would like to interpolate the values of an image I. The pixels of I have a specified position in point_seabed_e and point_seab...

11 mesi ago | 1 answer | 0

### 1

answerQuestion

How can I plot intensity values given pixel positions?

Hi! I have a matrix with intensity values that are the pixels of an image 318x1000. I have to locate these pixels in fixed pos...

12 mesi ago | 0 answers | 0

### 0

answersQuestion

How to add .stl file to a robot?

Hi! I would like to add an .stl file to a robot link created with the robotic toolbox. I checked the Visuals field of the body a...

circa un anno ago | 0 answers | 0

### 0

answersQuestion

difference between Geolocated Data grids and Regular data grids

Hi! what's the difference between Geolocated Data grids and Regular data grids? I have to create an image with intensities that ...

circa un anno ago | 0 answers | 0

### 0

answersQuestion

How to set the center of mass of a prismatic joint?

Hi! How can I set the Center of mass of a link with a prismatic joint? Is my code correct? %SCARA a1=0.2; a2=0.25; d3=0.2; ...

circa un anno ago | 1 answer | 0

### 1

answerQuestion

How to compute Coriolis matrix?

Hi! I am using the Robotic system toolbox and I need to compute the coriolis matrix C(q,dq). There is only a block that computes...

circa un anno ago | 0 answers | 2

### 0

answersQuestion

starting condition of feedback scheme in simulink

Hi! How can I set a starting condition as input of my system? The input at t=0 is a constant error vector, but I don't know how...

circa un anno ago | 0 answers | 0

### 0

answersQuestion

how to fix ode45 parameters?

Error using derivative Expected state to be finite. Error in jointSpaceMotionModel/derivative (line 251) valida...

circa un anno ago | 1 answer | 0

### 1

answerQuestion

how to sum vector with simulink sum block

Hi! I would like to sum the fisrt element of a vector with the first one of another one and so on with the simulik sum block. Ho...

circa un anno ago | 1 answer | 0

### 1

answerQuestion

from urdf to simscape model

Hi! Can I import a .urdf file into a simscape model? How?

circa un anno ago | 1 answer | 0