# mathru

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Question

How to solve a ode within a for loop?

I am trying to solve a second order diferential function using ode45. I have defined a function for the differential function wh...

1 year ago | 1 answer | 0

### 1

answerQuestion

How to extract nodal coordinates in pdetool?

Hi, How can I extract coordinates (x and y) of nodes along an edge in pde?

1 year ago | 1 answer | 0

### 1

answerQuestion

call a input variable in a function

I have created a model using pdetool command and kept the model under a function with name 'heat.m' as follows: function A = he...

1 year ago | 1 answer | 0

### 1

answerQuestion

Find intersecting points in a image

How can I extract the boundary points of the first image. How can I plot it? How can I fiit a polynomical on the image boundar...

1 year ago | 1 answer | 0

### 1

answerQuestion

How to detect fingers in an image?

Hello, I want to draw a circle from the centerpoint (red point) in an image which is known. How can I do it? How can I detect ...

2 years ago | 1 answer | 0

### 1

answerQuestion

Transient heat flux boundary condition in PDE toolbox

Hi, I am modelling temperature distribution of a circular cylindrical rod with a plate. The model is very much similar to (http...

2 years ago | 1 answer | 0

### 1

answerQuestion

Heat flux boundary condition using pde modeler.

How can I define a HeatFlux (q = -kb*(T - 100) / 0.5) boundary condition on a edge of a 2D domain? Currently I am using a consta...

2 years ago | 0 answers | 0

### 0

answersQuestion

What is the meaning of [0.0;-1.5] in the following lines?

Tcenter = interpolateTemperature(result,[0.0;-1.5],1:numel(tlist)); Touter = interpolateTemperature(result,[0.2;-1.5],1:numel(t...

2 years ago | 1 answer | 0

### 1

answerQuestion

What is the meaning of p(1, :) in the following lines?

p = thermalModelT.Mesh.Nodes; nodesLeftEnd = find(p(1,:) < -1.5+eps); nodeCenter = nodesLeftEnd(p(2,nodesLeftEnd) < eps); no...

2 years ago | 1 answer | 0

### 1

answerQuestion

boundary mark of the image?

I want to mark the boundary of the centered circular objects. I also want to calculate the area of the object. How can I do it? ...

2 years ago | 1 answer | 0

### 1

answerQuestion

How can I draw a cylinder on a cube using pde modeler commad?

Hi, I want to make a geometry of a cylinder (dimension: height '1' and radius '0.5' at the point (0, 2, 0) on a cube (dimension ...

2 years ago | 1 answer | 0

### 1

answerQuestion

Matrix define using for loop

How to define the following matrix (penta diagonal) using for loop?

2 years ago | 1 answer | 0

### 1

answerQuestion

How to write pentadigonal matix?

How to generate the following penta diagonal matrix in matlab?

2 years ago | 2 answers | 0

### 2

answersQuestion

Measure the spreading length using image analysis.

In the attached image there are three figures where the spreading length is changing. How can I measure the spreading length of ...

2 years ago | 2 answers | 0

### 2

answersQuestion

Fit a polynimial function on a image curve

In image analysis, how can I fit a five or six order polynomial on a waved curve? And how can I determine that polynomial functi...

2 years ago | 2 answers | 0

### 2

answersQuestion

How to fit a circle in the marked area of the image?

I want to fit a circle at the peak (the marked area) of the wavy surface. How can I do that?

2 years ago | 2 answers | 0

### 2

answersQuestion

How can I plot the exported ASCII file from fluent?

Hello, I have exported the data (ASCII) of a plane from fluent. I want plot the data in MATLAB. It would be great if you can g...

2 years ago | 2 answers | 0

### 2

answersQuestion

Find the intersecting points

How can I calculate the intersecting points (red circled) from the following image?

2 years ago | 1 answer | 0