# Saeid

Professional Interests: Rheology, Polymer Processing, Rubber Mechanics, Polymer Physics, Micromechanics, Finite Difference Method, Finite Element Method, Computational Fluid Dynamics, CFD, Viscoelasticity, Constitutive Modelling, Material Science

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**Content Feed**

Question

Curve Fitting Using External Function

Using the Curve Fitting Toolbox, is it possible to put the fitting function outside of the fittype? A general example of the way...

14 dagen ago | 1 answer | 0

### 1

answerQuestion

How to recognize discontinuity of slope in numerical data

I am dealing with a set of data that, when plotted, shows a breaking point as shown in circles. How can I identify these points ...

ongeveer een maand ago | 1 answer | 0

### 1

answerQuestion

Solving set of nonlinear equations with multiple roots

I would like to solve the set of nonlinear equations for x & y, where the set of equations if defined in the function "Uniaxial"...

ongeveer een maand ago | 0 answers | 0

### 0

answersQuestion

Complex roots of sin(2*x)-2*x=0

How can i use fsolve to obtain the complex roots of the equation: sin(2*x)-2*x=0?

2 maanden ago | 2 answers | 0

### 2

answersQuestion

Delete/remove entire rows and columns containing an element that satisfies a condition (e.g. when the element is an imaginary number)

In an array containing elements that are imaginary numbers, how can I remove the entire row(s) and column(s) containing any of t...

3 maanden ago | 2 answers | 0

### 2

answersQuestion

Combining two character arrays so that the elements of one of them is added in between the elements of the other one

I want to combine two character arrays x='ABCDEFGHIJKLMNOPQRSTUVWXYZ' and a='AAAAAAAAAAAAAAAAAAAAAAAAAA' so that A is alte...

7 maanden ago | 1 answer | 0

### 1

answerQuestion

Finding the elements within a certain range [XMin, XMax] in every column of an array, then converting all the elements of each column within that range to the minimum of that range

I want to find all the elements within a certain range in every column of an array. For example, I want to find all the elements...

7 maanden ago | 1 answer | 0

### 1

answerQuestion

Finding the elements within a certain range [XMin, XMax] in every column of an array, then converting all the elements of each column within that range to the minimum of that range

I want to find all the elements within a certain range in every column of an array. For example, I want to find all the elements...

7 maanden ago | 1 answer | 0

### 1

answerQuestion

Find element satisfying condition in 3D array, then apply operation to all elements in the column number

I have two 3D arrays A & B with I x J x K elements. I want to find all the elements that satisfy a certain condition in A (e.g. ...

7 maanden ago | 1 answer | 0

### 1

answerQuestion

Integral of exp(-x)*P(x)/Q(x) in terms of exponential integral in symbolic tooblox

I am trying to find an analytical soltuion to the integral I= int(exp(-x)*P(x)/Q(x),x,0,inf) where P and Q are both polynnomi...

9 maanden ago | 1 answer | 0

### 1

answerQuestion

Shifting datasets using error minimization and optimization

In the field of polymer rheology, it is sometimes necessary to perform tests at different temperatures and then shifting them to...

10 maanden ago | 0 answers | 0

### 0

answersQuestion

How to use external function to plot a graph in GUI or app designer

Currently I can only write the plotting command inside the code view of my GUI form. In cases where I need to write multiple com...

11 maanden ago | 1 answer | 0

### 1

answerQuestion

Referring to a specific column of a uitable as logical (with checkboxes)

My program needs to read data from a database and then add checkboxes to an extra column on the right hand side of the data. How...

ongeveer een jaar ago | 1 answer | 0

### 1

answerQuestion

BVP4C is returning x and y output vecotrs that are different in length from the original x vector. Is there a way to fix the length of x ans y?

I would like to solve a set of BVPs with the starting x values (second line of the code below) in a vector of length 50, but whe...

ongeveer een jaar ago | 0 answers | 0

### 0

answersQuestion

Padé approximant for a numerical data array

I am looking for the Padé approximant of a data array such as y. y cannot be given explicitly and is generated by another routin...

meer dan een jaar ago | 2 answers | 0

### 2

answersQuestion

Outer Bounds of a Dataset

I have a set of xy data and I want to find the outer bounds of this set so that when I plot the data and connect these outer bou...

meer dan een jaar ago | 1 answer | 0

### 1

answerQuestion

Third Order Boundary Value Problem (BVP) with Boundary Coditions only in Terms of Derivatives

I need to solve the boundary value problem (related to flow of fluids in conical ducts): Y''' + 1 - Y'^2 = 0 with all the thre...

meer dan een jaar ago | 0 answers | 0

### 0

answersQuestion

Solving nonlinear implicit differential equation of the form F(t,y(t),y'(t),y''(t), y'''(t), ...)=0 in MATLAB using ode15i

Is it possible to solve implicit differential equations of the form F(t,y(t),y'(t),y''(t), ..., y(n))=0 in Matlab? The specific ...

meer dan een jaar ago | 1 answer | 0

### 1

answerQuestion

Change Edit Filed text from external function

I am trying to design a GUI console, named e.g. MainConsole where input values are entered and then sent to an external function...

meer dan een jaar ago | 1 answer | 0

### 1

answerQuestion

Call to function with multiple outputs

Considering the function with multiple outputs of different array sizes [y1 y2 y3 y4]=f(x) sometimes inside a program I just n...

meer dan een jaar ago | 1 answer | 0

### 1

answerQuestion

Stepsize in integral2 or quad2d

I would like to solve the double integral: for i=1:length(z) fz= @(P,Q) sin(P).*(sqrt(1+z(i).*cos(Q).*(sin(2*P)+z(i).*cos(...

meer dan een jaar ago | 1 answer | 0

### 1

answerQuestion

Compare positions of strings in two cell arrays having the same string elements

I have two cell arrays F1 & F2 having the same elements, but the positions of elements in F2 have been shuffled: F1 = {'ET...

meer dan een jaar ago | 1 answer | 0

### 1

answerQuestion

Cover shapes in background with filled shapes in foreground

I would like to draw shapes using the polyshape function, e.g. by writing: x0=[0 0 200 200]; y0=[10 0 0 10] SquareSh...

meer dan een jaar ago | 0 answers | 0

### 0

answersQuestion

Implicit Boundary Value Problem

Is there a way in Matlab to use the bvp4c or bvp5c functions to solve a system consisting of boundary value and algebraic equati...

meer dan een jaar ago | 1 answer | 0

### 1

answerQuestion

Passing parameters in boundary value problem using BVP4C

For a system of boundary value problems I need to pass a parameter as a coefficient. Let's assume that I have defined the proble...

bijna 2 jaar ago | 2 answers | 0

### 2

answersQuestion

Reading numerical data from text file

I have a large number of text files containing numerical data of the form: -1.1389E+00 7.5269E-05 | -1.6667E-01 0.0...

ongeveer 2 jaar ago | 1 answer | 0

### 1

answerQuestion

Replacing specified elements of a matrix with elements of a vector

Imagine a 6X6 zero matrix Z=zeros(6,6). I have a vector v=[1 2 3 4] and I want to send the elements of this vector to specified ...

meer dan 2 jaar ago | 1 answer | 0

### 1

answerQuestion

Finding elements of an arrays having specified index numbers

If I select a number of elements from an M X N array (which usually follow a pattern) I need to assign the indices of these elem...

meer dan 2 jaar ago | 1 answer | 0

### 1

answerQuestion

Use isnan with input excel data containing a combination of strings and empty cells in a row

When I read raw data from an excel file named INFILE.xls, I usually want to remove the free spaces between columns afterward and...

meer dan 2 jaar ago | 1 answer | 0

### 1

answerQuestion

Sum of rows with whose row numbers are specified by another array

I have an array of the form: TTX = 20 9 2 7 40 10 10 1 60 2 10 9 0 1...

meer dan 2 jaar ago | 1 answer | 0