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

Question

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...

3 meses ago | 1 answer | 0

Question

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...

3 meses ago | 1 answer | 0

Question

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...

3 meses ago | 1 answer | 0

Question

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. ...

3 meses ago | 1 answer | 0

Question

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...

5 meses ago | 1 answer | 0

Question

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...

6 meses ago | 0 answers | 0

Question

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...

7 meses ago | 1 answer | 0

Question

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...

9 meses ago | 1 answer | 0

Question

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...

10 meses ago | 0 answers | 0

Question

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...

11 meses ago | 2 answers | 0

Question

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...

11 meses ago | 1 answer | 0

Question

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...

12 meses ago | 0 answers | 0

Question

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 ...

alrededor de 1 año ago | 1 answer | 0

Question

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...

alrededor de 1 año ago | 1 answer | 0

Question

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...

alrededor de 1 año ago | 1 answer | 0

Question

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(...

alrededor de 1 año ago | 1 answer | 0

Question

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...

alrededor de 1 año ago | 1 answer | 0

Question

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...

alrededor de 1 año ago | 0 answers | 0

Question

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...

más de 1 año ago | 1 answer | 0

Question

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...

más de 1 año ago | 2 answers | 0

Question

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...

casi 2 años ago | 1 answer | 0

Question

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 ...

casi 2 años ago | 1 answer | 0

Question

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...

casi 2 años ago | 1 answer | 0

Question

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...

alrededor de 2 años ago | 1 answer | 0

Question

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...

alrededor de 2 años ago | 1 answer | 0

Question

Identifying blocks of data from a cell array having the same header

I usually use xlsread to load large excel datasheets for further manipulation. The excel worksheet looks somewhat like this: ...

alrededor de 2 años ago | 1 answer | 0

Question

Creating table with variablenames properts as an array

I create a table of the form: Temp={'T_'} rpm=[70; 80; 90] Temperature=strcat(Temp,num2str(rpm)) TVALz=[190 220 300 140; 57 ...

alrededor de 2 años ago | 0 answers | 0

Question

How to perform mathematical operation between all elements of arrays with unequal numbers

I have two arrays A & B, being a nXm and a pXq array, repsctively. I want to take A(i,j) and multiply it in or subtract it from ...

alrededor de 2 años ago | 2 answers | 0

Question

Converting cell array from excel to numbers

Reading from a large excel sheet using xlsread, I am trying to read data and find numerical values assigned to specific lines in...

alrededor de 2 años ago | 3 answers | 0

Question

Rearranging Array Rows into Multiple Blocks while Maintaining the Old Order

How can I rearrange an array from alternating rows to multiple blocks, maintaining the order of the rows?

más de 2 años ago | 2 answers | 0