Answered

What is z1 appearing when solving this nonlinear system for x y and z?

You can try to use the function vpasolve instead of solve

What is z1 appearing when solving this nonlinear system for x y and z?

You can try to use the function vpasolve instead of solve

5 days ago | 1

Answered

Legend with different text color and Latex Interpreter

I dont think it is possible to change the color with the latex interpreter. It can be used to make text bold for example and ins...

Legend with different text color and Latex Interpreter

I dont think it is possible to change the color with the latex interpreter. It can be used to make text bold for example and ins...

5 days ago | 0

Answered

How can I create a point shapefile from a csv (or matrix) with lat/long columns?

Im not sure what you want, but maybe this can help: for i=1:1780 T.(sprintf('var%g',i))=sprintf('var%g',i); end This cre...

How can I create a point shapefile from a csv (or matrix) with lat/long columns?

Im not sure what you want, but maybe this can help: for i=1:1780 T.(sprintf('var%g',i))=sprintf('var%g',i); end This cre...

6 days ago | 0

Answered

plot fails with -Inf

you can use Px(isinf(abs(Px)))=0; to set all -Inf values to 0

plot fails with -Inf

you can use Px(isinf(abs(Px)))=0; to set all -Inf values to 0

6 days ago | 0

Answered

How do I display the output of my stats_

Im not sure what you mean. With the command 'gcf' you get all the stats of the figure. The stats of the maskImage are in your ...

How do I display the output of my stats_

Im not sure what you mean. With the command 'gcf' you get all the stats of the figure. The stats of the maskImage are in your ...

13 days ago | 0

Answered

How can I perform region growing with two seed points?

Can you upload an image, and give examples of the values: I,x,y,x2,y2,reg_maxdist1,reg_maxdist2, then we can run the code and ch...

How can I perform region growing with two seed points?

Can you upload an image, and give examples of the values: I,x,y,x2,y2,reg_maxdist1,reg_maxdist2, then we can run the code and ch...

14 days ago | 0

| accepted

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);...

19 days 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...

19 days 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...

26 days 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 ...

1 month 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

2 months ago | 0

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...

2 months 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...

2 months 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...

2 months 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

2 months 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....

2 months ago | 4 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';

2 months 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...

2 months 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)

2 months 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...

2 months 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...

2 months 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...

2 months 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 ...

2 months 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...

2 months 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 " * " .

2 months 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

3 months 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(....)

3 months 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(:,...

3 months 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...

3 months ago | 1

| accepted