# 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

Analytical Solution of Double Integral in Symbolic Math

The following integral is known to have an analytical solution int(sin(x)*(a^2*cos(x)^2 + sin(x)^2/a)^(1/2), x) but Symbolic ...

6 days ago | 1 answer | 0

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answerQuestion

Is it possible to decide which line is variable names in readtable?

I want to use readtable to read data from an excel file. As I understand, in readtable, the first line is automatically the vari...

5 months ago | 2 answers | 0

### 2

answersQuestion

3D Surface plot of a body for which the xyz coordinates are given

I have an extremely large (in the order of 1-3 million data points) xyz array that defines a body in 3D space. I would like to ...

5 months ago | 0 answers | 0

### 0

answersQuestion

Searching for slightly different versions of one string in another string array

I am looking for slightly diffeerent versions of a string S in the array A. For example, the string S that I am searching for ma...

7 months ago | 1 answer | 0

### 1

answerQuestion

Finding elements in string or cell array with common strings

Consider two arrays A & B: A={'blah_12_blah' 'blah_456_blah' 'blah_789_blah' 'blah_NPQZ_blah'} B={'blah_NPQZ_blah' 'blah_135_b...

7 months ago | 1 answer | 0

### 1

answerQuestion

Is it possible to save 2D or 3D graphics in a common CAD format (STEP File or .dwg file)?

Is it possible to create a 2D or 3D graphic shape in MATLAB and then convert it into a common CAD file?

9 months ago | 0 answers | 0

### 0

answersQuestion

Repeating the rows of an array by a number given by another array

Consider the array: x=[linspace(1,4,4)' linspace(5,20,4)'] I would like to repeat each row by a number given by another array...

9 months ago | 2 answers | 0

### 2

answersQuestion

Combining a number and a string array (both columns) into a single column string array.

How can the number array: NUMM=linspace(1,10,10)' and the string array: STRR=repmat('X='10,1) be combined to give a string a...

10 months ago | 2 answers | 0

### 2

answersfsolve yields initial guess as solution to non-linear equation

Thank you Davide! This really works, although it is not completely indpendent from the initial guess. Of course I know that an i...

10 months ago | 0

Question

fsolve yields initial guess as solution to non-linear equation

I am currently trying to solve a non-linear equation using the following program: clc; format long g; a=0.5; Eta0=100; t12=1e...

10 months ago | 2 answers | 0

### 2

answersQuestion

Average number of y for y=f(x) where there are several y values for the same x

I have an array y where y is a function of x but for every x there are multiple values of y. x=[x1 x1 x1 x1 x1 x2 x2 x2 x2 x3 x...

10 months ago | 1 answer | 0

### 1

answerIdentifying numbers within a long string containing multiple occurrences of text and numbers in one row

Thank you both!

11 months ago | 1

Question

Identifying numbers within a long string containing multiple occurrences of text and numbers in one row

Read from a text file, my input array contains one row that looks like this: x y z...

11 months ago | 2 answers | 0

### 2

answersQuestion

Assigning array-type names to elements of a GUI or App

How can I assign names coming from a string array to the elements of an App? Example: I have the following string array CBNam...

11 months ago | 1 answer | 0

### 1

answerQuestion

Finding local minima and maxima of DSC curves using islocalmin and islocalmax

DSC (Differential Scanning Calorimetry) is a thermal analysis method used in material science and chemistry to understand the th...

12 months ago | 0 answers | 0

### 0

answersShifting one curve to a reference curve using error minimization (fmincon from the Minimization Toolbox)

Sure. I just did!

1 year ago | 0

Shifting one curve to a reference curve using error minimization (fmincon from the Minimization Toolbox)

Hi Mathieu, thanks for the elaborate response and sorry for my late reply. Yes, it worked pretty well! Saeid

1 year ago | 0

Question

Shifting one curve to a reference curve using error minimization (fmincon from the Minimization Toolbox)

I need to shift the red curve ONLY horizontally to overlap with the black one. This should be possible using error minimization ...

1 year ago | 3 answers | 0

### 3

answersQuestion

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...

1 year 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 ...

1 year 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"...

1 year 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?

1 year 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...

1 year 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...

1 year 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...

1 year 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...

1 year 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. ...

1 year 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...

2 years 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...

2 years 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...

2 years ago | 1 answer | 0