Answered

Creating a run log/count with a for loop within a table.

I think this is what you are looking for: switch_list=zeros(length(data),1); switch_list(2:end)=data(2:end,2)-data(1:end-1,2);...

Creating a run log/count with a for loop within a table.

I think this is what you are looking for: switch_list=zeros(length(data),1); switch_list(2:end)=data(2:end,2)-data(1:end-1,2);...

4 years ago | 0

Answered

How to extract values from an array?

val1 contains the numbers x(1), x(2) x(3) and x(4). val2 contains the numbers between x(1) and x(4) with steps on 1, but x(4) is...

How to extract values from an array?

val1 contains the numbers x(1), x(2) x(3) and x(4). val2 contains the numbers between x(1) and x(4) with steps on 1, but x(4) is...

4 years ago | 0

Answered

How do I find a center of rotation having a set of 3D points ?

If each point represent the same amount of mass, the center of rotation is just the average position of all poisitions, when eac...

How do I find a center of rotation having a set of 3D points ?

If each point represent the same amount of mass, the center of rotation is just the average position of all poisitions, when eac...

4 years ago | 0

Answered

how can i split a 400*400 matrix into smaller one

what about this: num_list=0:40:400; data=[]; Image=zeros(400); for a=1:numel(num_list)-1 for b=1:numel(num_list)-1 ...

how can i split a 400*400 matrix into smaller one

what about this: num_list=0:40:400; data=[]; Image=zeros(400); for a=1:numel(num_list)-1 for b=1:numel(num_list)-1 ...

4 years ago | 0

Answered

save data to a new row in a table for each iteration of a for loop

something like this might be useful for you: data=[]; for i=1:0.1:10 data(:,end+1)=[i^2;i^3];%just example of data end

save data to a new row in a table for each iteration of a for loop

something like this might be useful for you: data=[]; for i=1:0.1:10 data(:,end+1)=[i^2;i^3];%just example of data end

4 years ago | 0

| accepted

Answered

It's posible to make figure always maximized and block minimized option?

You can do this with position function of a handle: h=figure(); h.Position=[1,41,1536,749] % depends on your screen size, 1 41...

It's posible to make figure always maximized and block minimized option?

You can do this with position function of a handle: h=figure(); h.Position=[1,41,1536,749] % depends on your screen size, 1 41...

4 years ago | 0

Answered

How not to delete one element of a figure when using cla?

Maybe you can delete one of the 'Children' of the figure. type: h.Children and check if there is any data that can be delete...

How not to delete one element of a figure when using cla?

Maybe you can delete one of the 'Children' of the figure. type: h.Children and check if there is any data that can be delete...

4 years ago | 0

Answered

Computing an specific numerical Integral

I think you should use a Riemann integral to estimate the answer of this integral. Or maybe wolfram Mathematica can solve it f...

Computing an specific numerical Integral

I think you should use a Riemann integral to estimate the answer of this integral. Or maybe wolfram Mathematica can solve it f...

4 years ago | 0

Answered

How to copy files form one directory to another

cd('source_folder') filenames=dir; for i=3:length(filenames) copyfile(filenames(i).name,'destination_folder') end

How to copy files form one directory to another

cd('source_folder') filenames=dir; for i=3:length(filenames) copyfile(filenames(i).name,'destination_folder') end

4 years ago | 0

Submitted

steppermotor

Easy control of a bipolar (4 cable) stepper motor, power by usb port and controlled with audio signal via the audio jack output....

4 years ago | 3 downloads |

Answered

Changing dimensions of a cell array

You can do this with: ' field=field';

Changing dimensions of a cell array

You can do this with: ' field=field';

4 years ago | 0

| accepted

Answered

Why wont matlab start up on my laptop?

I have the same problem sometimes. On my computer this is caused by a wrong target location of my desktop shortcut. The shortcut...

Why wont matlab start up on my laptop?

I have the same problem sometimes. On my computer this is caused by a wrong target location of my desktop shortcut. The shortcut...

4 years ago | 0

Answered

Can't figure out what I am doing wrong. Looking to find square root using the equation given x=(x+x/a)/2. I also feel like I am not making use of the approximation errors ea and es.

just use this to solve x=(x+x/a)/2 a=input('') syms x xsol=vpasolve(x==(x+x/a)/2,x)

Can't figure out what I am doing wrong. Looking to find square root using the equation given x=(x+x/a)/2. I also feel like I am not making use of the approximation errors ea and es.

just use this to solve x=(x+x/a)/2 a=input('') syms x xsol=vpasolve(x==(x+x/a)/2,x)

4 years ago | 0

Answered

How do you randomly choose a grey bar in picture to turn white?

This is most likely not the best way to do it but it works: picture=zeros(50,50); picture(10,10:12)=100; picture(20,10:12)=10...

How do you randomly choose a grey bar in picture to turn white?

This is most likely not the best way to do it but it works: picture=zeros(50,50); picture(10,10:12)=100; picture(20,10:12)=10...

4 years ago | 1

Answered

function serialportlist is not working

I do not know if i have such a device. I want to play audio files via different USB speakers, do you have any tips how to do thi...

function serialportlist is not working

I do not know if i have such a device. I want to play audio files via different USB speakers, do you have any tips how to do thi...

4 years ago | 0

| accepted

Question

function serialportlist is not working

When I use the function 'serialportlist' to identify the serial ports on my laptop i get a 1x0 empty string array. ports=serial...

4 years ago | 1 answer | 0

Answered

How can I extract values from an N x 2 matrix?

What about this?: cord=zeros(1,2); for i=1:100 xx = input('Enter x coordinates in the form [0]'); yy = input('Enter ...

How can I extract values from an N x 2 matrix?

What about this?: cord=zeros(1,2); for i=1:100 xx = input('Enter x coordinates in the form [0]'); yy = input('Enter ...

4 years ago | 0

Answered

Custom colour bar, excluding the Blue from RGB.

Maybe you can try this: h=figure(); A = [200 200 200 200 200; 200 200 200 200 200; 200 200 100 200 200; 200 200 200 200 200; 2...

Custom colour bar, excluding the Blue from RGB.

Maybe you can try this: h=figure(); A = [200 200 200 200 200; 200 200 200 200 200; 200 200 100 200 200; 200 200 200 200 200; 2...

4 years ago | 0

Answered

Error: Inner Matrix Dimension Must Agree

you should use " .* " instead of " * " .

Error: Inner Matrix Dimension Must Agree

you should use " .* " instead of " * " .

4 years ago | 1

Answered

Index exceeds matrix dimensions error

You should use ( and ) not { and }. Try this code: t=zeros(10,1); for n=1:10 if n/2>2 t(n)=t(n-1)+1 end end

Index exceeds matrix dimensions error

You should use ( and ) not { and }. Try this code: t=zeros(10,1); for n=1:10 if n/2>2 t(n)=t(n-1)+1 end end

4 years ago | 0

| accepted

Answered

How can I get the column number of a matrix with smallest error to my value?

Mybe you can use: [x,y,z]=find(....)

How can I get the column number of a matrix with smallest error to my value?

Mybe you can use: [x,y,z]=find(....)

4 years ago | 0

Answered

Efficient way of selecting columns of a matrix

You can get the data from different columns also in two (maybe more?) ways: a=[1:10;11:20;21:30]; tic for i=1:10000 a(:,...

Efficient way of selecting columns of a matrix

You can get the data from different columns also in two (maybe more?) ways: a=[1:10;11:20;21:30]; tic for i=1:10000 a(:,...

5 years ago | 0

Answered

How can I convert all string cells in a table to numerical values?

If you use the import data tool, you can chose to ouput the data in matrix instead of a table. With this tool you can also gene...

How can I convert all string cells in a table to numerical values?

If you use the import data tool, you can chose to ouput the data in matrix instead of a table. With this tool you can also gene...

5 years ago | 1

| accepted

Answered

How can I use a loop to maximize correlation of multiple graphs?

Maybe something like this can help you: clear Y_data=[ones(1,40)*-6,-6:-2/20:-8,ones(1,140)*-8]; %just an example for x1=1:19...

How can I use a loop to maximize correlation of multiple graphs?

Maybe something like this can help you: clear Y_data=[ones(1,40)*-6,-6:-2/20:-8,ones(1,140)*-8]; %just an example for x1=1:19...

5 years ago | 0

| accepted

Answered

Why does cumtrapz return negative values?

Your X and Y are from high value to low values, resulting in negative areas. use fliplr() to mirror arrays X and Y. X=[0.5056 ...

Why does cumtrapz return negative values?

Your X and Y are from high value to low values, resulting in negative areas. use fliplr() to mirror arrays X and Y. X=[0.5056 ...

5 years ago | 1

Answered

Adding values from columns 1:i for each column for a new matrix of the same size

Something like this? matrix=[1 2 3; 1 2 3; 1 2 3; 1 2 3]; for i=1:size(matrix,2) matrix_new(:,i)=sum(matrix(:,1:i),2); e...

Adding values from columns 1:i for each column for a new matrix of the same size

Something like this? matrix=[1 2 3; 1 2 3; 1 2 3; 1 2 3]; for i=1:size(matrix,2) matrix_new(:,i)=sum(matrix(:,1:i),2); e...

5 years ago | 0

Answered

input image without writing a path directory in the code

maybe you can use this: https://nl.mathworks.com/matlabcentral/fileexchange/73801-adding-all-subfolders-of-a-certain-base-folde...

input image without writing a path directory in the code

maybe you can use this: https://nl.mathworks.com/matlabcentral/fileexchange/73801-adding-all-subfolders-of-a-certain-base-folde...

5 years ago | 0

Submitted

Adding all subfolders of a certain (base)folder to the path.

This code will add every subfolden within a certain base folder to the searchpath.

5 years ago | 1 download |

Answered

Draw horizontal lines using for loop on set of images

Maybe this works: Color=[255,255,0]; %color in 8bit, [255 255 0] is yellow width=3; %width of the line Line_Y_coor=[500 60...

Draw horizontal lines using for loop on set of images

Maybe this works: Color=[255,255,0]; %color in 8bit, [255 255 0] is yellow width=3; %width of the line Line_Y_coor=[500 60...

5 years ago | 1

| accepted