Answered

HI All ,Here i want to Reshape 2D images into 1D image vectors , why i get this error ? Error using '?? Transpose on ND array is not defined. Error in testauto (line 14) temp = reshape(img',r*c,1); .please help its urgent Thanks.

Not enough information, but it is likely that the image you are reading is a color image and is actually r by c by 3. I will als...

HI All ,Here i want to Reshape 2D images into 1D image vectors , why i get this error ? Error using '?? Transpose on ND array is not defined. Error in testauto (line 14) temp = reshape(img',r*c,1); .please help its urgent Thanks.

Not enough information, but it is likely that the image you are reading is a color image and is actually r by c by 3. I will als...

circa 6 anni ago | 0

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Answered

I have a 2 D matrix where each column is a set of data that is Weibull distributed. I want to use wblfit to get the parameters for each column of data without using for loop.

This should work faster than an explicit for loop: Result = splitapply(@(x1){wblfit(x1)},X,1:size(X,2)); Then each group...

I have a 2 D matrix where each column is a set of data that is Weibull distributed. I want to use wblfit to get the parameters for each column of data without using for loop.

This should work faster than an explicit for loop: Result = splitapply(@(x1){wblfit(x1)},X,1:size(X,2)); Then each group...

circa 6 anni ago | 0

| accepted

Answered

Merging several row vectors in a single matrix

Naming your vectors A1,A2,A3 ... then assembling them like this is very inefficient. You want to either load them directly into ...

Merging several row vectors in a single matrix

Naming your vectors A1,A2,A3 ... then assembling them like this is very inefficient. You want to either load them directly into ...

circa 6 anni ago | 0

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Answered

Compute that portion of a surface above a threshold

The problem here is that you appear to be committing a fundamental fallacy in how discrete data work. In your example case, you ...

Compute that portion of a surface above a threshold

The problem here is that you appear to be committing a fundamental fallacy in how discrete data work. In your example case, you ...

circa 6 anni ago | 0

| accepted

Answered

How can I give my fit plot the same color as the data points?

Not super clear description, a picture would help but: Are you sure you don't mean to use the 'Color' property instead of 'ma...

How can I give my fit plot the same color as the data points?

Not super clear description, a picture would help but: Are you sure you don't mean to use the 'Color' property instead of 'ma...

circa 6 anni ago | 0

| accepted

Answered

how can I write the time function when I am plotting the convolution of two time continuous signals?

This question shows a lack of fundamental understanding of convolution. Make sure to read up on what convolution/correlation is ...

how can I write the time function when I am plotting the convolution of two time continuous signals?

This question shows a lack of fundamental understanding of convolution. Make sure to read up on what convolution/correlation is ...

circa 6 anni ago | 0

Answered

machine learning and image segmentation

I will give you a very rough suggestion with many assumptions, but this is the best I can do with the given information. It shou...

machine learning and image segmentation

I will give you a very rough suggestion with many assumptions, but this is the best I can do with the given information. It shou...

circa 6 anni ago | 0

Answered

How can I convert known GPS coordinates to image pixels, and again image pixels to world GPS coordinates?

A simple start would be to get any two points: dx = abs(point2gpsx - point1gpsx)/abs(point2imagex - point1imagex) So by...

How can I convert known GPS coordinates to image pixels, and again image pixels to world GPS coordinates?

A simple start would be to get any two points: dx = abs(point2gpsx - point1gpsx)/abs(point2imagex - point1imagex) So by...

circa 6 anni ago | 0

Answered

How do I read multiple images into matlab and save them in cells?

This is not directly solving your problem, but if you use the following instead, it will either work, or help you better figure ...

How do I read multiple images into matlab and save them in cells?

This is not directly solving your problem, but if you use the following instead, it will either work, or help you better figure ...

circa 6 anni ago | 0

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Answered

Using markup from an included file

I don't believe you can achieve this as easily as you want. The only way I can think of is: - Publish the markup file separat...

Using markup from an included file

I don't believe you can achieve this as easily as you want. The only way I can think of is: - Publish the markup file separat...

circa 6 anni ago | 0

Answered

max between 2 timeseries signals

Maybe C=max(A.Data,B.Data)? You problem definition is a little vague, what exactly are you trying to find?

max between 2 timeseries signals

Maybe C=max(A.Data,B.Data)? You problem definition is a little vague, what exactly are you trying to find?

circa 6 anni ago | 0

Answered

How can I create a generic vector containing other objects?

So you want a <https://www.mathworks.com/help/matlab/ref/cell.html Cell> array? Question is unclear.

How can I create a generic vector containing other objects?

So you want a <https://www.mathworks.com/help/matlab/ref/cell.html Cell> array? Question is unclear.

circa 6 anni ago | 0

Answered

Plotting a line which would include 95% of points above and below the regression line

Find your residual vector. Use prctile() on the residual vector to find the points at your upper and lower bounds. Solve t...

Plotting a line which would include 95% of points above and below the regression line

Find your residual vector. Use prctile() on the residual vector to find the points at your upper and lower bounds. Solve t...

circa 6 anni ago | 0

| accepted

Answered

I need to produce a matrix that has one's along the diagonal from the upper right to the lower left

x(1:1:n,n:-1:1) =1; You cannot index points inside a matrix like that. MATLAB indexing reads like this: Matrix(a,b) => F...

I need to produce a matrix that has one's along the diagonal from the upper right to the lower left

x(1:1:n,n:-1:1) =1; You cannot index points inside a matrix like that. MATLAB indexing reads like this: Matrix(a,b) => F...

circa 6 anni ago | 1

Answered

image processing with parallel computing gives incorrect results

I am not very knowledgeable with the implementation of ParFor, but I would wager a guess the problem is your indexing: specifica...

image processing with parallel computing gives incorrect results

I am not very knowledgeable with the implementation of ParFor, but I would wager a guess the problem is your indexing: specifica...

circa 6 anni ago | 0

Answered

Pulling matrix column data out of a cell

Say your Cell array is C: D = cell2mat(C); E = reshape(D(:),[500 29*6]); Now every 500 by 29 chunk in E is a matrix y...

Pulling matrix column data out of a cell

Say your Cell array is C: D = cell2mat(C); E = reshape(D(:),[500 29*6]); Now every 500 by 29 chunk in E is a matrix y...

circa 6 anni ago | 0

| accepted

Answered

How can I create a cell array by combining arrays?

maybe this? <https://www.mathworks.com/help/matlab/ref/mat2cell.html mat2cell> it is unclear what you are trying to accompli...

How can I create a cell array by combining arrays?

maybe this? <https://www.mathworks.com/help/matlab/ref/mat2cell.html mat2cell> it is unclear what you are trying to accompli...

circa 6 anni ago | 1

Answered

I'm trying to create a matrix of odd numbers, and I'm having some trouble. Any ideas? Thanks

You might have meant to do: odds = 1:2:lim as it is unclear what nums is in the scope of this function.

I'm trying to create a matrix of odd numbers, and I'm having some trouble. Any ideas? Thanks

You might have meant to do: odds = 1:2:lim as it is unclear what nums is in the scope of this function.

circa 6 anni ago | 0

Answered

Transformation of variables in regression

You can use my <http://www.mathworks.com/matlabcentral/fileexchange/34918-multivariate-polynomial-regression MultiPolyRegress>. ...

Transformation of variables in regression

You can use my <http://www.mathworks.com/matlabcentral/fileexchange/34918-multivariate-polynomial-regression MultiPolyRegress>. ...

circa 6 anni ago | 0

Answered

What is the convolution of two probability distribution estimate (ksdensity in matlab)?

Use: [f,xi] = ksdensity(x,pts) To sample them at the same points, even if you have to sample a long tail of zeros to do ...

What is the convolution of two probability distribution estimate (ksdensity in matlab)?

Use: [f,xi] = ksdensity(x,pts) To sample them at the same points, even if you have to sample a long tail of zeros to do ...

circa 6 anni ago | 0

| accepted

Answered

How to avoid nested loops when taking portions of a matrix(e.g using every 10x10 matrix in a 100x100 matrix)?

C = imfilter(A,B);

How to avoid nested loops when taking portions of a matrix(e.g using every 10x10 matrix in a 100x100 matrix)?

C = imfilter(A,B);

circa 6 anni ago | 1

| accepted

Answered

3D Voxel mask from geometry/ does plane intersect with volume

Well, the first problem you define is slightly more problematic, but the actual task you mention is easier. A Voronoi tessell...

3D Voxel mask from geometry/ does plane intersect with volume

Well, the first problem you define is slightly more problematic, but the actual task you mention is easier. A Voronoi tessell...

circa 6 anni ago | 0

| accepted

Answered

How can a logical vector be converted to a numeric vector in which the values represent the number of zeros between ones?

Something along the lines of: x = [1;1;1;0;0;1;0;1]; inds = find(x); diffs = [inds(2:end);0]-inds; diffs(end) = 1; y...

How can a logical vector be converted to a numeric vector in which the values represent the number of zeros between ones?

Something along the lines of: x = [1;1;1;0;0;1;0;1]; inds = find(x); diffs = [inds(2:end);0]-inds; diffs(end) = 1; y...

circa 6 anni ago | 0

| accepted

Answered

Interpolating between calling specific elements of the table

Had something like this already, here it is: function out=R134a(P,a) % Your Table M=[60 -36.9 0.0007098 0.3112 3...

Interpolating between calling specific elements of the table

Had something like this already, here it is: function out=R134a(P,a) % Your Table M=[60 -36.9 0.0007098 0.3112 3...

circa 6 anni ago | 0

| accepted

Answered

How to reduce the rmse for a fit obtained using curve fitting toolbox

Read up on the concepts of Overfitting, Underfitting, Variance and Regression. You are fitting a function of 3 variables to 3 da...

How to reduce the rmse for a fit obtained using curve fitting toolbox

Read up on the concepts of Overfitting, Underfitting, Variance and Regression. You are fitting a function of 3 variables to 3 da...

circa 6 anni ago | 0

| accepted

Answered

reconstruct 3D image

Too vague to answer directly, but here are two helpful tips: 1) Whatever you are doing, in the end you need to stack the imag...

reconstruct 3D image

Too vague to answer directly, but here are two helpful tips: 1) Whatever you are doing, in the end you need to stack the imag...

circa 6 anni ago | 0

Answered

I understand the point of asking a question is to not automatically be given the answer. However I have no clue how to even approach the given questions that are mentioned below. I looked up a way to do it on the Matlab website already but am lost.

Create the functions first: function letter = grade(points) if this letter = that else if this ...

I understand the point of asking a question is to not automatically be given the answer. However I have no clue how to even approach the given questions that are mentioned below. I looked up a way to do it on the Matlab website already but am lost.

Create the functions first: function letter = grade(points) if this letter = that else if this ...

circa 6 anni ago | 0

Answered

Convolution of 2 image

See if the first half of this helps: <https://ahmetcecen.github.io/blog/class/2016/10/04/Filtering/> Convolution and filte...

Convolution of 2 image

See if the first half of this helps: <https://ahmetcecen.github.io/blog/class/2016/10/04/Filtering/> Convolution and filte...

circa 6 anni ago | 0

Answered

Hello! I am new to matlab. I just want to execute a simple GUI code in which i can display an image from base workspace through callback function(pushbutton1).

I don't have the time to write the actual thing here at the moment, but check one of my simpler GUIs here to see how it is done:...

Hello! I am new to matlab. I just want to execute a simple GUI code in which i can display an image from base workspace through callback function(pushbutton1).

I don't have the time to write the actual thing here at the moment, but check one of my simpler GUIs here to see how it is done:...

circa 6 anni ago | 0

Submitted

Image Correlation and Convolution for Large Data

Applies a Patched Convolution Scheme to compute 2D and 3D image auto and cross correlations.

circa 6 anni ago | 1 download |