50 total contributions since 2014

Physicist.

PhD candidate on Computer Vision and Robotics.

Professional Interests: SLAM, computer vision

Solved

Make the vector [1 2 3 4 5 6 7 8 9 10]

In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

5 years ago

Solved

Times 2 - START HERE

Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

5 years ago

Answered

Plotting equation as a function

k=0.4; alpha=0.5; tau=50; h=30; % Define the values within the interval for gamma minValue = 2*h/pi; maxValue = ...

Plotting equation as a function

k=0.4; alpha=0.5; tau=50; h=30; % Define the values within the interval for gamma minValue = 2*h/pi; maxValue = ...

5 years ago | 1

| accepted

Answered

can anybody help in understanding fopen and fread?

The file identifier is a integer greater than 3. Identifier -1 means fopen can not open the file, and MATLAB reserves file ident...

can anybody help in understanding fopen and fread?

The file identifier is a integer greater than 3. Identifier -1 means fopen can not open the file, and MATLAB reserves file ident...

6 years ago | 0

Answered

How to get all possible arrangements for n=10 and more

http://www.mathworks.com/help/matlab/ref/perms.html [Limitations: perms(v) is practical when length(v) is less than about 10.] ...

How to get all possible arrangements for n=10 and more

http://www.mathworks.com/help/matlab/ref/perms.html [Limitations: perms(v) is practical when length(v) is less than about 10.] ...

6 years ago | 0

Answered

Error: Unexpected MATLAB expression. SYNTAX ERROR?!

You need to checked carefully what you have written in the definition of G, I have spotted some * missing, there is also a missi...

Error: Unexpected MATLAB expression. SYNTAX ERROR?!

You need to checked carefully what you have written in the definition of G, I have spotted some * missing, there is also a missi...

6 years ago | 1

| accepted

Answered

How to join two codes of images?

In order to not copy manually the coordinates of your ROI, you have to keep them on a variable and return the variable as an out...

How to join two codes of images?

In order to not copy manually the coordinates of your ROI, you have to keep them on a variable and return the variable as an out...

6 years ago | 0

| accepted

Answered

Segmentation fault when printing images with transparency and -nodisplay option

I'm answering my own question, just in case someone else run into this problem (although it's improbable). The purpose of runnin...

Segmentation fault when printing images with transparency and -nodisplay option

I'm answering my own question, just in case someone else run into this problem (although it's improbable). The purpose of runnin...

6 years ago | 1

| accepted

Answered

How to draw a figure?

you can try surf or mesh: <http://www.mathworks.es/es/help/matlab/learn_matlab/creating-mesh-and-surface-plots.html>

How to draw a figure?

you can try surf or mesh: <http://www.mathworks.es/es/help/matlab/learn_matlab/creating-mesh-and-surface-plots.html>

6 years ago | 0

Answered

Operands to the || and && operators must be convertible to logical scalar values.

_find_ returns the indexes of the values that holds the condition 5.2=< x >=8.50 index = find(x>=5.2 & x<=8.50) To know...

Operands to the || and && operators must be convertible to logical scalar values.

_find_ returns the indexes of the values that holds the condition 5.2=< x >=8.50 index = find(x>=5.2 & x<=8.50) To know...

6 years ago | 1

Answered

Need help with 3D surface plot of complex function

*s* is a complex number and so it's F(s) (*z* in your code). This is why the problem ask you to plot the magnitude of F(s) which...

Need help with 3D surface plot of complex function

*s* is a complex number and so it's F(s) (*z* in your code). This is why the problem ask you to plot the magnitude of F(s) which...

6 years ago | 0

Question

Segmentation fault when printing images with transparency and -nodisplay option

I'm running MATLAB 2012a on Linux's command line with -nodisplay option. When I run my code I get a segmentation fault. The foll...

6 years ago | 1 answer | 1

Answered

Any alternative to kmeans functions for image processing toolbox?

Piotr's toolbox contains a kmeans function (folder classify: *kmeans2*). It's open source, you can download it from this link: h...

Any alternative to kmeans functions for image processing toolbox?

Piotr's toolbox contains a kmeans function (folder classify: *kmeans2*). It's open source, you can download it from this link: h...

6 years ago | 0

Answered

Inserting Color Map value in an image

You can copy the code you are using to be able to help you. You can also try this function: function make_video(video_dir...

Inserting Color Map value in an image

You can copy the code you are using to be able to help you. You can also try this function: function make_video(video_dir...

6 years ago | 0

Answered

The script will read in image files (jpg) into a “cell” array then display them

have you look at the functions _imread_ and _imshow_ ?

The script will read in image files (jpg) into a “cell” array then display them

have you look at the functions _imread_ and _imshow_ ?

6 years ago | 0

Answered

intersection of two triangles

% this define the vertexes (x,y) of first triangle trian1x =[ 0 0.5 1 0]; trian1y =[ 0 1 0 0]; % this d...

intersection of two triangles

% this define the vertexes (x,y) of first triangle trian1x =[ 0 0.5 1 0]; trian1y =[ 0 1 0 0]; % this d...

6 years ago | 3

| accepted

Answered

How to write multiple txt files from workspace matrix?

X= 1:size(My_matrix,1); for it=1:size(My_matrix,2) filename = ['Mytext' num2str(it) '.txt']; data = [X' My_m...

How to write multiple txt files from workspace matrix?

X= 1:size(My_matrix,1); for it=1:size(My_matrix,2) filename = ['Mytext' num2str(it) '.txt']; data = [X' My_m...

6 years ago | 2

| accepted

Answered

Function to evaluate arguments using pol2cart

As arguments for your function you have to write the name of the variable: function x = Carlos_Virguez_Ex14(r,angle) No...

Function to evaluate arguments using pol2cart

As arguments for your function you have to write the name of the variable: function x = Carlos_Virguez_Ex14(r,angle) No...

6 years ago | 0

Answered

Problem in Plotting graph.

p=120000; t=288; dax=0.1; m=150; r=287; cp=1004; row=1.45; v=50:300; dvx=-0.145*v./(0.145+(0....

Problem in Plotting graph.

p=120000; t=288; dax=0.1; m=150; r=287; cp=1004; row=1.45; v=50:300; dvx=-0.145*v./(0.145+(0....

6 years ago | 0

| accepted

Answered

How to rename images from a series of folder

mainDirectory = 'C:\Users\md\Desktop\NewFolder'; subDirectory = dir([mainDirectory '/N*']); for m = 1 : length(s...

How to rename images from a series of folder

mainDirectory = 'C:\Users\md\Desktop\NewFolder'; subDirectory = dir([mainDirectory '/N*']); for m = 1 : length(s...

6 years ago | 1

| accepted

Answered

element wise sum in array

You have to use a dot in front of the operation: *.** *.^* to mean element-wise operation in matlab t = [20 30 22 32 10 1...

element wise sum in array

You have to use a dot in front of the operation: *.** *.^* to mean element-wise operation in matlab t = [20 30 22 32 10 1...

6 years ago | 0

| accepted

Answered

using predefined string for savefig

fileparams = ['50psi_10A_Sawtooth_05Hz'] filename = [fileparams '.fig'] print(filename)

using predefined string for savefig

fileparams = ['50psi_10A_Sawtooth_05Hz'] filename = [fileparams '.fig'] print(filename)

6 years ago | 1

| accepted

Answered

How can I shading plot?

Color is defined as a vector of 3 values: RGB. When you select 'g' on you plots this vector is [0 1 0]. 'r' is [1 0 0] or 'b' is...

How can I shading plot?

Color is defined as a vector of 3 values: RGB. When you select 'g' on you plots this vector is [0 1 0]. 'r' is [1 0 0] or 'b' is...

6 years ago | 0

| accepted

Answered

Save values in the middle of a loop

You could save them as mat files http://www.mathworks.es/es/help/matlab/ref/save.html

Save values in the middle of a loop

You could save them as mat files http://www.mathworks.es/es/help/matlab/ref/save.html

6 years ago | 0

| accepted

Answered

comando stem en guide

Maybe this helps: http://www.mathworks.com/matlabcentral/answers/102384-how-do-i-make-my-gui-plot-into-an-axes-within-the-gu...

comando stem en guide

Maybe this helps: http://www.mathworks.com/matlabcentral/answers/102384-how-do-i-make-my-gui-plot-into-an-axes-within-the-gu...

6 years ago | 0

Answered

Joining jpg files to make a video

I use MATLAB2012a, you can try if this function works for you. The input arguments are: the path to the images (vide_dir), exten...

Joining jpg files to make a video

I use MATLAB2012a, you can try if this function works for you. The input arguments are: the path to the images (vide_dir), exten...

6 years ago | 1

| accepted

Answered

Please provide me a matlab source code for running number of files in a loop.

video_dir = 'snaps/' extension = 'jpg' out_dir = 'video/' resnames=dir(fullfile(video_dirs,['*.' extensio...

Please provide me a matlab source code for running number of files in a loop.

video_dir = 'snaps/' extension = 'jpg' out_dir = 'video/' resnames=dir(fullfile(video_dirs,['*.' extensio...

6 years ago | 0

| accepted

Answered

how to display the clustered values which are clustered using k means clustering?

There is an example on how to plot the clusters and the cluster centroids here: http://www.mathworks.es/es/help/stats/kmeans.htm...

how to display the clustered values which are clustered using k means clustering?

There is an example on how to plot the clusters and the cluster centroids here: http://www.mathworks.es/es/help/stats/kmeans.htm...

6 years ago | 0

Answered

Create two vectors X and Y of values from (-pi) to pi with a spacing of pi/10. Define the vector Z as: Z = (sin(sqrt(x^2+y^2)))/(sqrt(x^2+y^2))

[x,y] = meshgrid(-pi:pi/10:pi) z = (sin(sqrt(x.^2+y.^2)))./(sqrt(x.^2+y.^2)) mesh(x,y,z)

Create two vectors X and Y of values from (-pi) to pi with a spacing of pi/10. Define the vector Z as: Z = (sin(sqrt(x^2+y^2)))/(sqrt(x^2+y^2))

[x,y] = meshgrid(-pi:pi/10:pi) z = (sin(sqrt(x.^2+y.^2)))./(sqrt(x.^2+y.^2)) mesh(x,y,z)

6 years ago | 0