Answered

How to calculate left ventricle ejection fraction?

There is an example with using impoly I = imread('img1.png'); imshow(I) h = impoly; % draw polygon msk = h.c...

How to calculate left ventricle ejection fraction?

There is an example with using impoly I = imread('img1.png'); imshow(I) h = impoly; % draw polygon msk = h.c...

13 hours ago | 0

Answered

How to compute equation only for x(y>0)

Take Ew where Pw>0 Ew = (1369*((alphaa*x)+(alphar.*y)+(alphai*z)))/1000 % alphaa and alphai are constants. alphar is only one d...

How to compute equation only for x(y>0)

Take Ew where Pw>0 Ew = (1369*((alphaa*x)+(alphar.*y)+(alphai*z)))/1000 % alphaa and alphai are constants. alphar is only one d...

13 hours ago | 0

Answered

How to make a scatter plot of a 2D field in a map and add contour lines of a different field in the same map, without the contour command messing up with the color scale of the scatter command?

Max value of batim is 1000, so MATLAB automaticaly rescale color range for [0 1000] try set(gca,'Clim',[0 30])

How to make a scatter plot of a 2D field in a map and add contour lines of a different field in the same map, without the contour command messing up with the color scale of the scatter command?

Max value of batim is 1000, so MATLAB automaticaly rescale color range for [0 1000] try set(gca,'Clim',[0 30])

17 hours ago | 0

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Answered

How to plot in for loop?

You re comparing wrong variable if i<18.5 % maybe bmi(i) < 18.5 Forgot hold on hold on You draw all data together ins...

How to plot in for loop?

You re comparing wrong variable if i<18.5 % maybe bmi(i) < 18.5 Forgot hold on hold on You draw all data together ins...

19 hours ago | 0

Answered

Solution of non linear equation

Maybe there is no such a and c! I used isosurface to create several combinations: clc,clear cla [a,c,y] = meshgrid(0:0.5:5)...

Solution of non linear equation

Maybe there is no such a and c! I used isosurface to create several combinations: clc,clear cla [a,c,y] = meshgrid(0:0.5:5)...

20 hours ago | 0

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Answered

plotting a volume data in x and y plane

Use volumeslice() or contourslice()

plotting a volume data in x and y plane

Use volumeslice() or contourslice()

20 hours ago | 0

Answered

Surf plot with a mask

Use CData property: [X,Y] = meshgrid(-5:5); Z = -X.^2-Y.^2; C = rand(size(Z)); surf(X,Y,Z,'Cdata',C)

Surf plot with a mask

Use CData property: [X,Y] = meshgrid(-5:5); Z = -X.^2-Y.^2; C = rand(size(Z)); surf(X,Y,Z,'Cdata',C)

1 day ago | 1

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Answered

help me to write a code for processing an audio signal using taylor series

Try gradient instead of diff dx = gradient(x); dx2 = gradient(dx); result = x + (h.*dx) + (h^2.*dx2)./factorial(2);

help me to write a code for processing an audio signal using taylor series

Try gradient instead of diff dx = gradient(x); dx2 = gradient(dx); result = x + (h.*dx) + (h^2.*dx2)./factorial(2);

1 day ago | 0

Answered

Vectorizing multiple for loops in Matlab

I changed your code a bit See attached script

Vectorizing multiple for loops in Matlab

I changed your code a bit See attached script

1 day ago | 1

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Answered

How to find the distances between two points in X-Y plane?

Use euclidean distance d = sqrt( (x2-x1).^2 + (y2-y1).^2 );

How to find the distances between two points in X-Y plane?

Use euclidean distance d = sqrt( (x2-x1).^2 + (y2-y1).^2 );

2 days ago | 2

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Answered

How to make the binarized image clearer

Pay attention that you don't extract colormap This only extracts indexed image (see workspace, I is of size [369x574x1]) I = i...

How to make the binarized image clearer

Pay attention that you don't extract colormap This only extracts indexed image (see workspace, I is of size [369x574x1]) I = i...

2 days ago | 0

Answered

I need help with plotting streamlines and velocity field

Use gradient() and streamline()

I need help with plotting streamlines and velocity field

Use gradient() and streamline()

2 days ago | 0

Answered

How can I intersect a line and a 3D object (cube, sphere, prism)?

It is a pyramid. If you want to know if line intersects pyramid you should inspect each plane of it Once you have all interse...

How can I intersect a line and a 3D object (cube, sphere, prism)?

It is a pyramid. If you want to know if line intersects pyramid you should inspect each plane of it Once you have all interse...

3 days ago | 0

Answered

Full fill a rectangle shape in an image

Use convhull or boundary to get contour of your figure Then use inpolygon to fill this shape

Full fill a rectangle shape in an image

Use convhull or boundary to get contour of your figure Then use inpolygon to fill this shape

3 days ago | 0

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Answered

Do the isosurfaces merely indicate a single value or do they contain information on all the value above the threshold?

You should plot multiple isosurfaces since isovalue should be a scalar YOu can use for loop for that purpose

Do the isosurfaces merely indicate a single value or do they contain information on all the value above the threshold?

You should plot multiple isosurfaces since isovalue should be a scalar YOu can use for loop for that purpose

3 days ago | 0

Answered

How to color the area between lines that are vectors, no functions

I created some figure and lines I rotated lines and created new figure (yellow) Painted faces to white and removed edg...

How to color the area between lines that are vectors, no functions

I created some figure and lines I rotated lines and created new figure (yellow) Painted faces to white and removed edg...

3 days ago | 0

Answered

Setting the distance between 2 lines?

What about for loop? width = 10; dist = 10; x0 = 0; hold on for i = 1:4 xline(x0+(width+dist)*i,'Linewidth',width) en...

Setting the distance between 2 lines?

What about for loop? width = 10; dist = 10; x0 = 0; hold on for i = 1:4 xline(x0+(width+dist)*i,'Linewidth',width) en...

3 days ago | 0

Answered

How can I Write a program that determines how many real roots are expected out of the quadratic equation (ax2 + bx+ c = 0) with corresponding inputs. When a user runs the file it should ask for the values of the constants a, b, and c.

I made a printscreen for you From this page: LINK Look carefully on your if statement

How can I Write a program that determines how many real roots are expected out of the quadratic equation (ax2 + bx+ c = 0) with corresponding inputs. When a user runs the file it should ask for the values of the constants a, b, and c.

I made a printscreen for you From this page: LINK Look carefully on your if statement

3 days ago | 0

Answered

Write string into excel

I suggest you to write all you want in cell array then write it to Excel file A = cell(5,1); % preallocate cell ...

Write string into excel

I suggest you to write all you want in cell array then write it to Excel file A = cell(5,1); % preallocate cell ...

3 days ago | 0

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Answered

could anyone help me how to display all the numbers inaddition to the numbers present.

I'd divide you task in several steps: Use for loop to consider each row separately Use ismember() to identificate which number...

could anyone help me how to display all the numbers inaddition to the numbers present.

I'd divide you task in several steps: Use for loop to consider each row separately Use ismember() to identificate which number...

3 days ago | 0

Answered

How to make a directed, circular chord plot in MATLAB

Here is a simple method how to draw arcs see attached script

How to make a directed, circular chord plot in MATLAB

Here is a simple method how to draw arcs see attached script

4 days ago | 0

Answered

Which Area is in right/left side of the other

If you are moving along the line you can get direction vector Then to pick any point left to line: Any point right to line...

Which Area is in right/left side of the other

If you are moving along the line you can get direction vector Then to pick any point left to line: Any point right to line...

4 days ago | 1

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Answered

Subplots with multiple axes

I think you mean this n = 10; % 10 subplot but only 4 of them are used ? subplot(1,n,1); plot(x,y,'.-'); subplot...

Subplots with multiple axes

I think you mean this n = 10; % 10 subplot but only 4 of them are used ? subplot(1,n,1); plot(x,y,'.-'); subplot...

4 days ago | 0

Answered

Make Random Walk into 3D

I do this dt = .01; [x, y, z] = deal( 0 ); [X,Y,Z] = sphere(30); surf(X,Y,Z,'edgecolor',[1 1 1]*0.8,'Facecolor','none') h...

Make Random Walk into 3D

I do this dt = .01; [x, y, z] = deal( 0 ); [X,Y,Z] = sphere(30); surf(X,Y,Z,'edgecolor',[1 1 1]*0.8,'Facecolor','none') h...

4 days ago | 0

Answered

How to get values at different interval for ode45

Use for loop to get results for x = 0: 0.1: 1 (11 curves) hold on for x = 0:0.1:1 [t,u] = ode45(@equation, [0 1], [x 0]) p...

How to get values at different interval for ode45

Use for loop to get results for x = 0: 0.1: 1 (11 curves) hold on for x = 0:0.1:1 [t,u] = ode45(@equation, [0 1], [x 0]) p...

4 days ago | 0

Answered

How can I find maximums in the intensity profile and display it in the original image ?

I think the problem is in order of points. MAthworks help: improfile Pixel-value cross-sections along line segments Try this ...

How can I find maximums in the intensity profile and display it in the original image ?

I think the problem is in order of points. MAthworks help: improfile Pixel-value cross-sections along line segments Try this ...

6 days ago | 1

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Answered

colored Line plot according to a third variable

clc,clear % generate some data x = linspace(0,10,10); y = x.^2; x = [ x nan ]; % i added nan for 'patch...

colored Line plot according to a third variable

clc,clear % generate some data x = linspace(0,10,10); y = x.^2; x = [ x nan ]; % i added nan for 'patch...

8 days ago | 0

Answered

Drawing a circle of ones by using a pre-defined grid with pcolor

Z1 = R <= a^2; % place ones Gauss shape Place R isntead of x

Drawing a circle of ones by using a pre-defined grid with pcolor

Z1 = R <= a^2; % place ones Gauss shape Place R isntead of x

8 days ago | 0

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